David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute David J. Peterson Mechanical Option Mechanical Technical Report #2b The INOVA HEART INSTITUTE AT INOVA Fairfax Hospital, Falls Church, VA. Mechanical Technical Report #2b Building Load and Energy Estimates Analysis Instructor: Dr. Mumma October 28, 2003 Thesis Building Sponsor s: INOVA Fairfax Hospital www.inova.com and Turner Construction 3300 Gallows Road, Falls Church, VA 22042 www.turnerconstruction.com 1
David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute Table of Contents 1.0 Executive Summary 2.0 Design Load Estimates 3.0 Annual Energy Analysis Estimates 4.0 References 5.0 Appendix 2
David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute 1.0 Executive Summary: The purpose of this report is to understand and model the load and energy consumption of the INOVA Heart Institute. The overall size of the new hospital is approximated at 410,000 sq.ft. The hospital is broken down into 3 wings, two of which serve the majority of the hospital and serve as recovery, patient, and general hospital office and recreation spaces. The third wing or CVOR (Cardio- Vascular-Operating-Rooms) serves as the critical care and operation wing. This wing contains a high quantity of supply air from the two 40,000cfm air handling units located in the penthouse above. The combined air handlers feed into one main duct that branches off and serves a 33,055 sq.ft space of the CVOR wing. The high quantity of air is associated with pressurization and other indoor air quality issues of the hospital. The focus of this report will be on the CVOR wing. This report contains the analysis of loads and energy consumption by the space using both a simple hand approach as well as a more derived computer approach. Through hand calculations a value of approximately 120 tons of cooling was obtained for the space. Through computer analysis with Carrier s HAP program a value of approximately 322 tons of cooling was obtained. Referencing the design documents it is shown that the engineers had intended for a value of approximately 360 tons of cooling. Discrepancies in the totaling cooling can be attributed to factors of safeties provided by the design engineer, very simplified hand solar calculations, as well as unforeseen equipment and their associated load. Calculating energy consumption for the building proved to be a more difficult task. The INOVA Heart Institute is an addition to the existing INOVA Fairfax Hospital. On the property there is a remote central plant which provides both steam and chilled water to the existing as well as to the new facilities. Due to restrictions by the owner and hospital, information about the existing chiller and steam plants was unattainable. For the purposes of gauging and approximate total energy consumption by the CVOR wing a chiller as well as a boiler was sized to meet the loads of the space. Through hand calculations a value of 2,435,436.23 KW-hrs per year (approximately: 8,309,708.42 K-BTU per year) was obtained for the total energy consumption of the space. Through the computer simulation method a value of approximately 21,636,344 K-BTU per year was obtained. Hand calculations differ from computer simulations because they do not take into account heating in general, more specifically the do not include steam humidification, terminal reheats or preheat coils in the air handlers. The total building operation cost was calculated in Hap to be approximately $76,384. This estimate of cost includes contributions from Air system fans, total cooling and heating needed, pumps, lights and electrical equipment. Cost s were based on Virginia Power s GS-3U rate schedule. The INOVA Heart Institute s Air Handler Penthouse is shown in the photo below courtesy of Turner Construction and is due to open in the Summer of 2004. INOVA Photo 1: AHU Penthouse Construction, August 12, 2003 3
David Peterson Penn State AE, Mechanical 2.0 Design Load Estimates: INOVA Fairfax Hospital The INOVA Heart Institute Estimating the design cooling load by hand entails a rather tedious look at all the loads present with in the CVOR wing of the INOVA Heart Institute. A detailed break down of all loads and sources can be found in the hand calculated spreadsheets of Appendix A. The load sources present in area of interest include Lights, People, Medical Equipment, Office Equipment, and some typical Kitchen Equipment. 2.1 Analysis By Hand Mechanical Load Data Total Cooling Load 292.3 Ft 2 /ton Supply Air 2.42 cfm/ft 2 Ventilation Air 0.726 cfm/ft 2 INOVA Table 1: Hand Analysis Calculation The hand analysis which was done through a series of spread sheets calculated a value of approximately 120 tons of cooling. 2.2 Analysis By Computer Mechanical Load Data Total Cooling Load 102.8 Ft 2 /ton Supply Air 2.42 cfm/ft 2 Ventilation Air 0.73 cfm/ft 2 INOVA Table 2: Computer Analysis Calculation The computer analysis done through Carrier s Hap program calculated a value of approximately 322 tons of cooling. 2.3 Original By the Designers Mechanical Load Data Total Cooling Load 92 Ft 2 /ton Supply Air 2.42 cfm/ft 2 Ventilation Air 0.726 cfm/ft 2 INOVA Table 3: Designer s Calculations From the design documents it is evident that the designers intended for the CVOR wing to have approximately 360 tons of cooling. 4
David Peterson Penn State AE, Mechanical 2.3 Conclusions INOVA Fairfax Hospital The INOVA Heart Institute Discrepancies in the totaling cooling can be attributed to factors of safeties provided by the design engineer, more exact solar loads, as well as unforeseen equipment and the associated load. The hospital also contains area shell space for future expansion, over sizing of the equipment now (along with air damper control) may be attributed to such future anticipated loads. The hospital is still under construction and only approximations can be made regarding discrepancies in load. 3.0 Annual Energy Analysis Estimates Due to restrictions by the owner and hospital information about the existing chiller and steam plants was unattainable. For the purposes of gauging and approximate total energy consumption by the CVOR wing a chiller as well as a boiler was sized to meet the loads of the space. The chiller that was selected was an Aircooled packaged reciprocating electric chiller that met the design loads as schedule on the drawings (approximately 368 ton of cooling at 715gpm) The boiler that was selected to meet the heating requirements was an electric resistance boiler (approximately: 5512 MBH at 372gpm with an efficiency of approximately 87%). A Remote steam source was selected in the computer simulation for the purposes of humidifying the air in the AHU s. 3.1 Analysis By Hand Mechanical Energy Analysis per Year Chilled Water Pumps 116,919.00 KBTU Fans 4,854,291.98 KBTU Lights 2,710,615.56 KBTU Equipment 1,004,684.38 KBTU Total 8,686,510.9 KBTU INOVA Table 4: Hand Analysis Calculation Mechanical Energy Analysis per Year Chilled Water Pumps 94,350 KBTU Fans 4,836,564 KBTU Lights 2,856,093 KBTU Equipment 995,615 KBTU Cooling 2,491,749 KBTU Heating 10,361,974 KBTU Total 21,636,344 KBTU INOVA Table 4: Computer Analysis Calculation The hand analysis only looks at such equipment as the supply and return fans as well as the chilled water pumps. The Computer simulation is more through and includes the previously mention as well as all the heating and cooling aspects associated with the space. Both incorporate all; lighting, equipment, sensible and latent loads within the space. The above tables show the results for both 5
David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute methods which are relatively close. Extensive energy hand calculations can be viewed in the Appendix B. 3.2 Annual Estimated Cooling Costs Component Annual Cost ($/ft²) Air System Fans 17,380 0.526 Cooling 8,893 0.269 Heating 35,932 1.087 Pumps 339 0.010 Cooling Tower Fans 0 0.000 HVAC Sub-Total 62,544 1.892 Lights 10,263 0.311 Electric Equipment 3,578 0.108 Misc. Electric 0 0.000 Misc. Fuel Use 0 0.000 Non-HVAC Sub-Total 13,841 0.419 Grand Total 76,384 2.311 Conditioned Floor Area 33055.8 ft² INOVA Table 5: Annual Computer Generated Costs These values represent the system if it were entirely run on electricity in actuality it may be cheaper to run the systems equipment on gas or other forms of generation and it may be determined down the road provided access is made available that the equipment in the remote central plant is most definitely not electric. Electric driven equipment is not always the cheapest form of operation. But for the purposes of this report it was used to gauge a simple estimate on power consumption. A summary of the computer simulation and associated calculations can be view in Appendix C. 3.3 Electric Energy Rates The following charges were applied to the energy analysis in the previous section. Virginia Electric and Power Company Schedule GS-3U Distribution Service Charges Basic monthly: $119.80 or $1437.60 annual Distribution Demand on all KW: $2.12 per KW Competitive Trans. On Peak Demand: $2.897 per KW Competitive Trans. On Peak KWH: $0.00568 per KWH INOVA Table 6: Cost Estimate Information 6
David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute 3.4 Overall System Costs The following mechanical system costs, supply actual values for the all three wings of the hospital combined and they are further broken down into three main costs Mechanical/ Plumbing/Med.Gas (combined), Sprinklers and Electrical. The system cost represented show that the Mechanical overall cost is the most expensive per square foot of the building. This makes sense due to all the specialty equipment needed to maintain safety with in the critical care environment. System's Cost Type Cost Cost/sq.ft. Sprinkler 836,000 2.04 *Mechanical 17,200,000 42.02 Electrical 9,200,000 22.33 Total: 27,236,000 66.39 *(Includes all Mech., Plumbing, and Med. Gas ) INOVA Table 7: System s Cost At the present time due to security concerns the present information regarding the energy analysis was unattainable. Although requests for information concerning the Energy analysis are currently being reviewed and final confirmation should be supplied in the near future. Through conversations with the general contractor and on-site mechanical engineer it is believed that an entire energy analysis was done before the construction of the actual building. At this time the building is approximately 60 percent complete and is due to open in the Fall of 2004. 3.5 Conclusions: The excluding ducting and piping the majority of the mechanical equipment is mainly located in the basement and penthouse floors. The Chiller and Steam Boilers are not located within the building but are on the property and are located in an existing central plant. For the purposes of this analysis and the inability to obtain information on the existing central plant a chiller and hot water boiler were sized to accommodate and gage an estimate on how much energy would be consumed and the overall cost s associated with running the system in CVOR wing. The mechanical systems for the INOVA Heart Institute can be characterized as non-typical and specialized and have higher amount of safety associated with them. Per square foot the mechanical systems make up approximately 21% of the overall cost of the entire building. 7
David Peterson Penn State AE, Mechanical INOVA Fairfax Hospital The INOVA Heart Institute 4.0 References: 1. ASHRAE Standard 90-1999, Energy Standards for Buildings. 2. Penn State Architectural Engineering Department, Thesis Advisors Mechanical Option. 3. Turner Construction, Construction Drawings, Shop Drawings and Specifications. 4. Virginia Power, Schedule GS-3U http://www.dom.com /customer/pdf/va/vags3u.pdf 5.0 Appendix : The Appencies are included on my web page below the Mechancial Technical Report 2b 8
5.1 Appendix A: Hand Load Estimate Calculations
Inputs for the Hand Design Load Calculation Space Conditions Outdoor Air: 4% ASHRAE T (DB): 95 4% ASHRAE T (WB): 78 CVOR (Operating) Spaces: Room Air: T (DB): 65 Supply Air: T (DB): 43.5 Non Operating Spaces: Room Air: T (DB): 75 Supply Air: T (DB): 50.5 Occupant Data Sensible (Btu/hr): 245 Latent (Btu/hr): 205 GYM Sensible (Btu/hr): 295 Latent (Btu/hr): 455 U-Values (Btu/(hr-ft2-F)): Roof: 0.05126 Wall: 0.044 Windows: 0.35 Window Data (Ft 2 ): Height: 6 Width: 6 Area: 36
Floor Analysis of CVOR Wing Space Area SQ. FT. Design SQ FT/ Person Occupant Load Occup Occupant Latent Load # of People Btu/hr Lighting Load 2 1 Special-Storage/Supply 228 200 1 234 279 2 456 1555.872 0.5 114 388.968 2 2 Special-Storage/Supply 368.5 200 2 378 451 2 737 2514.644 0.5 184.25 628.661 2 3 Special-Storage/Supply 397.4 200 2 407 487 2 794.8 2711.858 0.5 198.7 677.9644 2 4 Special-Storage/Supply 568 200 3 582 696 2 1136 3876.032 0.5 284 969.008 2 5 Special-Storage/Supply 147.1 200 1 151 180 2 294.2 1003.81 0.5 73.55 250.9526 2 6 Special-Storage/Supply 686 200 3 703 840 2 1372 4681.264 0.5 343 1170.316 2 1 Corridor 4035.515 100 40 8,273 9,887 1.6 6456.824 22030.68 0 0 0 2 2 Corridor 304.7 100 3 625 747 1.6 487.52 1663.418 0 0 0 2 1 CVOR 2470.6 75 33 6,753 8,071 7.6 18776.56 64065.62 4 9882.4 33718.7488 2 2 CVOR 2478.9 75 33 6,776 8,098 7.6 18839.64 64280.85 4 9915.6 33832.0272 2 1 Clean Area 1716.5 33.33 52 10,558 12,618 3 5149.5 17570.09 1.5 2574.75 8785.047 2 1 Prep Area 1548.4 33.33 46 9,524 11,382 3 4645.2 15849.42 1.5 2322.6 7924.7112 2 1 Toilets 140.6 50 3 576 689 1.5 210.9 719.5908 0 0 0 2 2 Toilets 81 50 2 332 397 1.5 121.5 414.558 0 0 0 2 1 Data/Electric 153 100 2 314 375 1.3 198.9 678.6468 1.5 229.5 783.054 2 1 Lounge 588.7 33.33 18 3,621 4,327 1.4 824.18 2812.102 0 0 0 3 1 Storage/Supply low 66.3 200 0 68 81 2 132.6 452.4312 0 0 0 3 2 Storage/Supply low 751 200 4 770 920 2 1502 5124.824 0 0 0 3 3 Special-Storage/Supply 3993 200 20 4,093 4,891 2 7986 27248.23 0.5 1996.5 6812.058 3 4 Special-Storage/Supply 204 200 1 209 250 2 408 1392.096 0.5 102 348.024 3 1 Office 252 100 3 517 617 1.5 378 1289.736 1 252 859.824 3 2 Office 1586.1 100 16 3,252 3,886 1.5 2379.15 8117.66 1 1586.1 5411.7732 3 3 Office 244 100 2 500 598 1.5 366 1248.792 1 244 832.528 3 1 Gym 2068.8 55 38 17,115 11,096 1.9 3930.72 13411.62 1 2068.8 7058.7456 3 1 Corridor 3563.8 100 36 7,306 8,731 1.6 5702.08 19455.5 0 0 0 3 1 Toilets 91.5 50 2 375 448 1.5 137.25 468.297 0 0 0 3 1 Locker 528.4 50 11 2,166 2,589 2 1056.8 3605.802 0 0 0 3 2 Locker 1462 50 29 5,994 7,164 2 2924 9976.688 0 0 0 3 1 Lounge 756 33.33 23 4,650 5,557 1.4 1058.4 3611.261 0.5 378 1289.736 3 2 Lounge 896 33.33 27 5,511 6,586 1.4 1254.4 4280.013 0.5 448 1528.576 3 1 Classroom 352 25.14 14 2,870 3,430 1.6 563.2 1921.638 0.5 176 600.512 3 1 Data/Elec 160 100 2 328 392 1.3 208 709.696 1.5 240 818.88 3 1 Sleeproom 168 100 2 344 412 1.2 201.6 687.8592 0 0 0 Occup Sensible Load Btu/hr General Lights W/ft2 General Lights W Total Lights Btu/hr Equip. W/ft2 Electrical Equipment Load Total Equip W Total Equip. Btu/hr
Floor Space Wall Envelope Load Window Envelope Load Roof Envelope Exterior Walls Window Roof Wall Window Roof Wall North South East West Envelope Envelope Area Envelope N (feet) S (feet) E (feet) W (feet) Height Btu/hr Num Area Num Area Num Area Num Area Btu/hr FT 2 Btu/hr 2 1 Storage/Supply 12 19 13.33 363.6424 1 36 0 0 0 252 0 0 2 2 Storage/Supply 12 18.5 13.33 357.7772 0 0 0 2 72 504 0 0 2 3 Storage/Supply 13.33 0 0 0 0 0 0 0 0 2 4 Storage/Supply 13.33 0 0 0 0 0 0 0 0 2 5 Storage/Supply 13.33 0 0 0 0 0 0 0 0 2 6 Storage/Supply 13.33 0 0 0 0 0 0 0 0 2 1 Corridor 69.5 158 100 13.33 3841.706 5 180 0 11 396 8 288 6048 0 0 2 2 Corridor 26.4 13.33 309.6826 0 2 72 0 0 504 0 0 2 1 CVOR 13.33 0 0 0 0 0 0 0 0 2 2 CVOR 13.33 0 0 0 0 0 0 0 0 2 1 Clean Area 13.33 0 0 0 0 0 0 0 0 2 1 Prep Area 13.33 0 0 0 0 0 0 0 0 2 1 Toilets 13.33 0 0 0 0 0 0 0 0 2 2 Toilets 13.33 0 0 0 0 0 0 0 0 2 1 Data/Electric 13.33 0 0 0 0 0 0 0 0 2 1 Lounge 24.8 25 13.33 584.1739 0 2 72 1 36 0 756 0 0 3 1 Storage/Supply low 13.33 0 0 0 0 0 0 0 0 3 2 Storage/Supply low 13.33 0 0 0 0 0 0 0 0 3 3 Storage/Supply 10 61 13.33 832.8584 1 36 0 0 4 144 1260 2149 2203.15 3 4 Storage/Supply 16.1 13.33 188.8594 0 1 36 0 0 252 204 209.141 3 1 Office 14 18 13.33 375.3728 1 36 0 1 36 0 504 252 258.35 3 2 Office 39 18.5 13.33 674.498 3 108 0 0 2 72 1260 1104.4 1132.23 3 3 Office 13.33 0 0 0 0 0 0 190 194.788 3 1 Gym 42.5 41.4 13.33 984.1806 3 108 0 0 3 108 1512 1078.9 1106.09 3 1 Corridor 6 156.1 13.33 1901.498 0 0 10 360 0 2520 2105.4 2158.46 3 1 Toilets 13.33 0 0 0 0 0 0 45.7 46.8516 3 1 Locker 11.1 13.33 130.2074 0 0 0 1 36 252 244 250.149 3 2 Locker 13.33 0 0 0 0 0 0 434 444.937 3 1 Lounge 13.33 0 0 0 0 0 0 756 775.051 3 2 Lounge 23.1 28 13.33 599.4234 0 2 72 0 1 36 756 896 918.579 3 1 Classroom 13.33 0 0 0 0 0 0 209 214.267 3 1 Data/Elec 13.33 0 0 0 0 0 0 160 164.032 3 1 Sleeproom 12 13.33 140.7648 0 1 36 0 0 252 168 172.234
Floor Space Occupant Latent Load Btu/hr Occupant Sensible Load Btu/hr Total Lights Btu/hr Total Equip. Btu/hr Wall Envelope Btu/hr Window Envelope Btu/hr Roof Envelope Btu/hr Total Load Btu/hr 2 1 Storage/Supply 234 279 1555.872 388.968 363.6424 252 0 2,794 2 2 Storage/Supply 378 451 2514.644 628.661 357.7772 504 0 4,383 2 3 Storage/Supply 407 487 2711.8576 677.9644 0 0 0 3,797 2 4 Storage/Supply 582 696 3876.032 969.008 0 0 0 5,427 2 5 Storage/Supply 151 180 1003.8104 250.9526 0 0 0 1,406 2 6 Storage/Supply 703 840 4681.264 1170.316 0 0 0 6,555 2 1 Corridor 8,273 9,887 22030.683 0 3841.706 6048 0 40,193 2 2 Corridor 625 747 1663.4182 0 309.68256 504 0 3,102 2 1 CVOR 6,753 8,071 64065.623 33718.749 0 0 0 104,537 2 2 CVOR 6,776 8,098 64280.852 33832.027 0 0 0 104,889 2 1 Clean Area 10,558 12,618 17570.094 8785.047 0 0 0 36,913 2 1 Prep Area 9,524 11,382 15849.422 7924.7112 0 0 0 33,298 2 1 Toilets 576 689 719.5908 0 0 0 0 1,296 2 2 Toilets 332 397 414.558 0 0 0 0 747 2 1 Data/Electric 314 375 678.6468 783.054 0 0 0 1,775 2 1 Lounge 3,621 4,327 2812.1022 0 584.17392 756 0 7,773 3 1 Storage/Supply low 68 81 452.4312 0 0 0 0 520 3 2 Storage/Supply low 770 920 5124.824 0 0 0 0 5,895 3 3 Storage/Supply 4,093 4,891 27248.232 6812.058 832.8584 1260 2203.1548 42,449 3 4 Storage/Supply 209 250 1392.096 348.024 188.85944 252 209.1408 2,599 3 1 Office 517 617 1289.736 859.824 375.3728 504 258.3504 3,804 3 2 Office 3,252 3,886 8117.6598 5411.7732 674.498 1260 1132.2309 19,848 3 3 Office 500 598 1248.792 832.528 0 0 194.788 2,776 3 1 Gym 17,115 11,096 13411.617 7058.7456 984.18056 1512 1106.0883 41,187 3 1 Corridor 7,306 8,731 19455.497 0 1901.4978 2520 2158.4561 33,341 3 1 Toilets 375 448 468.297 0 0 0 46.85164 890 3 1 Locker 2,166 2,589 3605.8016 0 130.20744 252 250.1488 6,405 3 2 Locker 5,994 7,164 9976.688 0 0 0 444.9368 16,416 3 1 Lounge 4,650 5,557 3611.2608 1289.736 0 0 775.0512 10,326 3 2 Lounge 5,511 6,586 4280.0128 1528.576 599.42344 756 918.5792 13,594 3 1 Classroom 2,870 3,430 1921.6384 600.512 0 0 214.2668 5,607 3 1 Data/Elec 328 392 709.696 818.88 0 0 164.032 2,021 3 1 Sleeproom 344 412 687.8592 0 140.7648 252 172.2336 1,597
Design Loads Units Occupant Latent Load Occupant Sensible Load Total Lights Total Equip. Wall Envelope Window Envelope Roof Envelope Outdoor Air Load Btu/hr 105,873 117,173 309,431 114,690 11,285 16,632 10,248 777600 1,357,059 Ton 8.82 9.76 25.79 9.56 0.94 1.39 0.85 64.80 113.09 Total Load Total Envelope Load (Btu/hr): 38,165 Total Conditioned Square Footage: 33055.815 Total Supply Air (CFM) From Designer: 80,000 Total Ventilation Air (CFM) From Designer: 24,000 Overall breakdown of Tonage Occupant Latent Load Occupant Sensible Load 8% 10% Total Cooling Load (ft 2 /ton): 292.30 Supply Air (cfm/ft 2 ): 2.42014907 Ventilation Air (cfm/ft2): 0.72604472 Outdoor Air Load 48% Roof Envelope 1% Window Envelope Wall Envelope Total Equip. 5% Total Lights 26% 1% 1%
5.2 Appendix B: Hand Energy Estimate Calculations
ENERGY INPUTS Square Footage 33055.8 Flow Rates (cfm): Supply Air 61,400 Ventilation Air 18,600 Occupant Data No. of occupants 471 Sensible (Btu/hr): 250 Latent (Btu/hr): 200 Air Conditions Supply Temp (F) 50.5 Space Temp (F) 75 W (gr/lb) 64.6 RH 50% h(btu/lbda) 28.1 Additional Parameters Lighting Load (Btu/hr) 321,733 Equipment Load (Btu/hr) 59,374 Overall Envelope (Btu/hr) 38,044
ENERGY LOAD CALCULATION HR Range (gr/lb) HR (gr/lb) BIN DATA DB (F) WB (F) h (BTU/lb) QOAsen (Btu) QOAlat (Btu) Lights (Btu) Equipemnt (Btu) Hrs 135 to 140 137.5 3 80.3 77.1 40.8 319399.2 2766117.6 965199 178122 353250 282600-2483518 0 114132 1930102 160.8419 130 to 135 132.5 11 82.6 76.9 40.6 1679356.8 9446791.2 3539063 653114 1295250 1036200-8410591 0 418484 7585268 632.1057 125 to 130 127.5 56 82.2 76 39.7 8099481.6 44551315 1.8E+07 3324944 6594000 5275200-39276115 0 2130464 38165938 3180.495 120 to 125 122.5 89 79.7 74.5 38.3 8402810.4 65176409 2.9E+07 5284286 10479750 8383800-56792609 0 3385916 56186999 4682.25 115 to 120 117.5 133 78.2 73.3 37.2 8549452.8 88987534 4.3E+07 7896742 15660750 12528600-76458934 0 5059852 79957286 6663.107 110 to 115 112.5 194 78.3 72.5 36.4 12860338 117532805 6.2E+07 11518556 22843500 18274800-99258005 0 7380536 1.17E+08 9751.594 105 to 110 107.5 246 76.4 71.1 35.1 6918307.2 133479403 7.9E+07 14606004 28966500 23173200-1.1E+08 0 9358824 1.39E+08 11583 100 to 105 102.5 350 74.2 69.5 33.8-5624640 167775720 1.1E+08 20780900 41212500 32970000-1.35E+08 0 1.3E+07 1.82E+08 15190.89 95 to 100 97.5 251 73.1 68.3 32.8-9579967 104445919 8.1E+07 14902874 29555250 23644200-80801719 0 9549044 1.25E+08 10431.85 90 to 95 92.5 347 72.8 67.2 31.9-15335179 122449082 1.1E+08 20602778 40859250 32687400-89761682 0 1.3E+07 1.71E+08 14247.46 85 to 90 87.5 225 72.6 66.2 31.1-10847520 65168820 7.2E+07 13359150 26493750 21195000-43973820 0 8559900 1.1E+08 9162.934 80 to 85 82.5 236 70.3 64.4 29.7-22281610 53430211 7.6E+07 14012264 27789000 22231200-31199011 0 8978384 1.04E+08 8702.252 75 to 80 77.5 275 68.8 62.9 28.6-34250040 44868780 8.8E+07 16327850 32381250 25905000-18963780 0 1E+07 1.13E+08 9449.811 70 to 75 72.5 267 68.2 61.6 27.7-36471773 26678426 8.6E+07 15852858 31439250 25151400-1527026 0 1E+07 1.07E+08 8906.733 65 to 70 67.5 307 65.6 59.6 26.3-57969950 11260514 9.9E+07 18227818 36149250 28919400 17658886 17658886 1.2E+07 1.25E+08 10376.46 60 to 65 62.5 254 65.3 58.3 25.4-49492814 -6746443.2 8.2E+07 15080996 29908500 23926800 30673243 30673243 9663176 1.18E+08 9796.107 55 to 60 57.5 257 62.6 56.1 24-64016438 -23078806 8.3E+07 15259118 30261750 24209400 47288206 47288206 9777308 1.21E+08 10104.61 50 to 55 52.5 348 60.4 53.9 22.6-1.02E+08-53258198 1.1E+08 20662152 40977000 32781600 86039798 86039798 1.3E+07 1.71E+08 14234.85 45 to 50 47.5 305 57.2 51.3 21.1-1.09E+08-65965644 9.8E+07 18109070 35913750 28731000 94696644 94696644 1.2E+07 1.49E+08 12449.47 40 to 45 42.5 388 53.9 48.5 19.5-1.64E+08-108454070 1.2E+08 23037112 45687000 36549600 145003670 145003670 1.5E+07 1.89E+08 15738.74 35 to 40 37.5 450 50.2 45.3 17.9-2.24E+08-154242360 1.4E+08 26718300 52987500 42390000 196632360 196632360 1.7E+07 2.14E+08 17837.98 30 to 35 32.5 550 45.6 41.5 16-3.25E+08-223300440 1.8E+08 32655700 64762500 51810000 275110440 275110440 2.1E+07 2.46E+08 20465.25 25 to 30 27.5 779 42.6 38.3 14.5-5.07E+08-365538583 2.5E+08 46252346 91727250 73381800 438920383 438920383 3E+07 3.5E+08 29179.43 20 to 25 22.5 760 40 35.1 13.1-5.34E+08-404685408 2.4E+08 45124240 89490000 71592000 476277408 476277408 2.9E+07 3.5E+08 29165.11 15 to 20 17.5 740 34.8 30.2 11-5.98E+08-440833392 2.4E+08 43936760 87135000 69708000 510541392 510541392 2.8E+07 3.1E+08 25855.86 10 to 15 12.5 542 28.9 24.7 8.9-5.02E+08-357156754 1.7E+08 32180708 63820500 51056400 408213154 408213154 2.1E+07 1.97E+08 16440.89 5 to 10 7.5 369 20.5 16.9 6.1-4.04E+08-266492095 1.2E+08 21909006 43449750 34759800 301251895 301251895 1.4E+07 95388640 7949.053 0 to 5 2.5 28 11.3 7.6 3.1-35828957 -21992342 9008524 1662472 3297000 2637600 24629942 24629942 1065232 3834214 319.5178 People Sensible (Btu) LOADS People Latent (Btu) DAY QOAlat + PEOPLE LATENT (Btu) Envelope (Btu) TOTAL Btu TOTAL Tons
EQUIPMENT INFORMATION Supply Air Flow Rate 61,400 scfm Lights 2 W/sf Tdb 75 F OA Flow Rate 18,600 scfm Equipment 2 W/sf W 64.6 gr/lb Return Air Flow Rate 90,000 scfm Overall UA 11500 Btu/(hr F) RH 50% No. People 1200 h 28.1 Btu/(lbda) Satemp 55 F (DB) AHU 11 - FAN LOAD-SUPPLY FAN (40,000 CFM) AHU 12 - FAN LOAD-SUPPLY FAN (40,000 CFM) P inwg 8.5 Fan BHP: 68.4 BHP P inwg 8.5 Fan BHP: 68.4 BHP fan eff 0.75 Fan kw: 50.958 kw fan eff 0.75 Fan kw: 50.958 kw motor eff 0.95 motor eff 0.95 CFM 40,000 CFM 40,000 AHU 11 - FAN LOAD-RETURN FAN (32,000 CFM) AHU 12 - FAN LOAD-RETURN FAN (32,000 CFM) P inwg 3 Fan BHP: 40.6 BHP P inwg 3 Fan BHP: 40.6 BHP fan eff 0.75 Fan kw: 30.247 kw fan eff 0.75 Fan kw: 30.247 kw motor eff 0.95 motor eff 0.95 CFM 32,000 CFM 32,000 CHILLED WATER PUMPS for secondary system #1 Recirculation cooling coil pumps for AHU 11 GPM 120 Pump BHP: 1.77210704 BHP GPM 130 Pump BHP: 0.85323672 BHP head (ft) 45 Pump kw: 1.32021974 kw head (ft) 20 Pump kw: 0.63566136 kw pump eff 0.81 pump eff 0.81 motor eff 0.95 motor eff 0.95 SG 1 SG 1 CHILLED WATER PUMPS for secondary system #2 Recirculation cooling coil pumps for AHU 12 GPM 120 Pump BHP: 1.77210704 BHP GPM 130 Pump BHP: 0.85323672 BHP head (ft) 45 Pump kw: 1.32021974 kw head (ft) 20 Pump kw: 0.63566136 kw pump eff 0.81 pump eff 0.81 motor eff 0.95 motor eff 0.95 SG 1 SG 1
Evaluation of no Economizer system HR Range (gr/lb) HR (gr/lb) BIN DATA DB (F) WB (F) h (BTU/lb) LOAD FANS PUMPS CHILLED WATER TOTAL FANS PUMPS Tons (kw hr) (kw hr) Hrs 135 to 140 137.5 3 80.3 77.1 40.8 161 487.23 11.735287 130 to 135 132.5 11 82.6 76.9 40.6 632 1786.51 43.029384 125 to 130 127.5 56 82.2 76 39.7 3,180 9094.96 219.05868 120 to 125 122.5 89 79.7 74.5 38.3 4,682 14454.49 348.14684 115 to 120 117.5 133 78.2 73.3 37.2 6,663 21600.53 520.26437 110 to 115 112.5 194 78.3 72.5 36.4 9,752 31507.54 758.88187 105 to 110 107.5 246 76.4 71.1 35.1 11,583 39952.86 962.2935 100 to 105 102.5 350 74.2 69.5 33.8 15,191 56843.5 1369.1168 95 to 100 97.5 251 73.1 68.3 32.8 10,432 40764.91 981.85231 90 to 95 92.5 347 72.8 67.2 31.9 14,247 56356.27 1357.3815 85 to 90 87.5 225 72.6 66.2 31.1 9,163 36542.25 880.14649 80 to 85 82.5 236 70.3 64.4 29.7 8,702 38328.76 923.17588 75 to 80 77.5 275 68.8 62.9 28.6 9,450 44662.75 1075.7346 70 to 75 72.5 267 68.2 61.6 27.7 8,907 43363.47 1044.4405 65 to 70 67.5 307 65.6 59.6 26.3 10,376 49859.87 1200.911 60 to 65 62.5 254 65.3 58.3 25.4 9,796 41252.14 993.5876 55 to 60 57.5 257 62.6 56.1 24 10,105 41739.37 1005.3229 50 to 55 52.5 348 60.4 53.9 22.6 14,235 56518.68 1361.2932 45 to 50 47.5 305 57.2 51.3 21.1 12,449 49535.05 1193.0875 40 to 45 42.5 388 53.9 48.5 19.5 15,739 63015.08 1517.7637 35 to 40 37.5 450 50.2 45.3 17.9 17,838 73084.5 1760.293 30 to 35 32.5 550 45.6 41.5 16 20,465 89325.5 2151.4692 25 to 30 27.5 779 42.6 38.3 14.5 29,179 126517.39 3047.2628 20 to 25 22.5 760 40 35.1 13.1 29,165 123431.6 2972.9393 15 to 20 17.5 740 34.8 30.2 11 25,856 120183.4 2894.704 10 to 15 12.5 542 28.9 24.7 8.9 16,441 88026.22 2120.1751 5 to 10 7.5 369 20.5 16.9 6.1 7,949 59929.29 1443.4403 0 to 5 2.5 28 11.3 7.6 3.1 320 4547.48 109.52934 Totals 332,659 1422711.6 34267.037
TOTALS Using Central Chilled Water Plant Data KWh/year Chilled Water Pumps 34,267.04 Supply/Return Fans 1,422,711.60 Lights 826,020.25 Equipment 152,437.35 Total 2,435,436.23
5.3 Appendix C: HAP Analysis
Air System Sizing Summary for Combined AHU (2) Project Name: INOVA HEART HAP 10/29/2003 Prepared by: psuae 07:49PM Air System Information Air System Name Combined AHU (2) Equipment Class CW AHU Air System Type CAV/RH Number of zones 2 Floor Area 33055.8 ft² Sizing Calculation Information Zone and Space Sizing Method: Zone CFM Sum of space airflow rates Space CFM Individual peak space loads Calculation Months Sizing Data Jan to Dec Calculated Central Cooling Coil Sizing Data Total coil load 321.5 Tons Total coil load 3858.0 MBH Sensible coil load 2725.5 MBH Coil CFM at Jul 1500 80000 CFM Max block CFM 80000 CFM Sum of peak zone CFM 80000 CFM Sensible heat ratio 0.706 ft²/ton 102.8 BTU/(hr-ft²) 116.7 Water flow @ 15.0 F rise 514.72 gpm Load occurs at Jul 1500 OA DB / WB 95.0 / 76.0 F Entering DB / WB 78.1 / 62.7 F Leaving DB / WB 46.5 / 44.3 F Coil ADP 38.6 F Bypass Factor 0.200 Resulting RH 40 % Design supply temp. 50.5 F Zone T-stat Check 2 of 2 OK Max zone temperature deviation 0.0 F Preheat Coil Sizing Data No heating coil loads occurred during this calculation. Humidifier Sizing Data Max steam flow at Des Htg 380.16 lb/hr Airflow Rate 80000 CFM Air mass flow 359142.22 lb/hr Moisture gain.00106 lb/lb Supply Fan Sizing Data Actual max CFM 80000 CFM Standard CFM 79809 CFM Actual max CFM/ft² 2.42 CFM/ft² Fan motor BHP 136.80 BHP Fan motor kw 102.01 kw Return Fan Sizing Data Actual max CFM 80000 CFM Standard CFM 79809 CFM Actual max CFM/ft² 2.42 CFM/ft² Fan motor BHP 80.20 BHP Fan motor kw 59.81 kw Outdoor Ventilation Air Data Design airflow CFM 24000 CFM CFM/ft² 0.73 CFM/ft² CFM/person 50.31 CFM/person Hourly Analysis Program v.4.1 Page 1 of 1
Annual Cost Summary INOVA HEART HAP 10/29/2003 psuae 06:02PM Table 1. Annual Costs INOVA BLDG Component Air System Fans 17,380 Cooling 8,893 Heating 35,932 Pumps 339 Cooling Tower Fans 0 HVAC Sub-Total 62,544 Lights 10,263 Electric Equipment 3,578 Misc. Electric 0 Misc. Fuel Use 0 Non-HVAC Sub-Total 13,841 Grand Total 76,384 Table 2. Annual Cost per Unit Floor Area INOVA BLDG Component ($/ft²) Air System Fans 0.526 Cooling 0.269 Heating 1.087 Pumps 0.010 Cooling Tower Fans 0.000 HVAC Sub-Total 1.892 Lights 0.311 Electric Equipment 0.108 Misc. Electric 0.000 Misc. Fuel Use 0.000 Non-HVAC Sub-Total 0.419 Grand Total 2.311 Gross Floor Area (ft²) 33055.8 Conditioned Floor Area (ft²) 33055.8 Note: Values in this table are calculated using the Gross Floor Area. Table 3. Component Cost as a Percentage of Total Cost INOVA BLDG Component ( % ) Air System Fans 22.8 Cooling 11.6 Heating 47.0 Pumps 0.4 Cooling Tower Fans 0.0 HVAC Sub-Total 81.9 Lights 13.4 Electric Equipment 4.7 Misc. Electric 0.0 Misc. Fuel Use 0.0 Non-HVAC Sub-Total 18.1 Grand Total 100.0 Hourly Analysis Program v.4.1 Page 1 of 1
Billing Details - Electric - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 1. Component Charges Customer Billing Period Energy Charges Demand Charges Charges Taxes Total Charge Jan 1,270 3,596 1,438 0 6,304 Feb 1,102 3,588 1,438 0 6,127 Mar 1,164 3,748 1,438 0 6,349 Apr 1,229 3,723 1,438 0 6,390 May 1,247 3,852 1,438 0 6,536 Jun 966 3,914 1,438 0 6,317 Jul 1,081 3,957 1,438 0 6,475 Aug 978 3,993 1,438 0 6,408 Sep 1,013 3,967 1,438 0 6,417 Oct 1,300 3,738 1,438 0 6,475 Nov 1,120 3,706 1,438 0 6,263 Dec 1,278 3,606 1,438 0 6,322 Totals 13,746 45,387 17,251 0 76,384 2. Totals Billing Period Total Charges Total Consumption (kwh) Avg Price ($/kwh) Jan 6,304 515,936 0.0122 Feb 6,127 466,039 0.0131 Mar 6,349 518,145 0.0123 Apr 6,390 504,418 0.0127 May 6,536 528,008 0.0124 Jun 6,317 523,423 0.0121 Jul 6,475 551,782 0.0117 Aug 6,408 546,980 0.0117 Sep 6,417 525,716 0.0122 Oct 6,475 528,042 0.0123 Nov 6,263 505,395 0.0124 Dec 6,322 519,246 0.0122 Totals 76,384 6,233,128 0.0123 3. Consumption Totals Billing Period Peak (kwh) Mid-Peak (kwh) Normal Peak (kwh) Off-Peak (kwh) Overall (kwh) Jan 223,618 0 0 292,318 515,936 Feb 194,003 0 0 272,035 466,039 Mar 204,889 0 0 313,255 518,145 Apr 216,398 0 0 288,020 504,418 May 219,546 0 0 308,462 528,008 Jun 170,071 0 0 353,352 523,423 Jul 190,250 0 0 361,532 551,782 Aug 172,168 0 0 374,812 546,980 Sep 178,265 0 0 347,451 525,716 Oct 228,839 0 0 299,203 528,042 Nov 197,141 0 0 308,254 505,395 Dec 224,945 0 0 294,301 519,246 Totals 2,420,131 0 0 3,812,997 6,233,128 Hourly Analysis Program v.4.1 Page 1 of 2
Billing Details - Electric - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 4. Billing Demands Billing Period Peak (kw) Mid-Peak (kw) Normal Peak (kw) Off-Peak (kw) Overall (kw) Jan 717.2 0.0 0.0 716.1 717.2 Feb 708.9 0.0 0.0 723.6 723.6 Mar 747.0 0.0 0.0 746.9 747.0 Apr 740.4 0.0 0.0 744.3 744.3 May 760.7 0.0 0.0 777.3 777.3 Jun 788.6 0.0 0.0 768.6 788.6 Jul 795.5 0.0 0.0 779.5 795.5 Aug 789.6 0.0 0.0 804.5 804.5 Sep 798.6 0.0 0.0 780.0 798.6 Oct 741.8 0.0 0.0 749.4 749.4 Nov 741.3 0.0 0.0 734.9 741.3 Dec 718.8 0.0 0.0 718.8 718.8 5. Maximum Demands Billing Period Peak (kw) Mid-Peak (kw) Normal Peak (kw) Off-Peak (kw) Overall (kw) Jan 717.2 0.0 0.0 716.1 717.2 Feb 708.9 0.0 0.0 723.6 723.6 Mar 747.0 0.0 0.0 746.9 747.0 Apr 740.4 0.0 0.0 744.3 744.3 May 760.7 0.0 0.0 777.3 777.3 Jun 788.6 0.0 0.0 768.6 788.6 Jul 795.5 0.0 0.0 779.5 795.5 Aug 789.6 0.0 0.0 804.5 804.5 Sep 798.6 0.0 0.0 780.0 798.6 Oct 741.8 0.0 0.0 749.4 749.4 Nov 741.3 0.0 0.0 734.9 741.3 Dec 718.8 0.0 0.0 718.8 718.8 6. Time Of Maximum Demands Billing Period Peak (m/d/h) Mid-Peak (m/d/h) Normal Peak (m/d/h) Off-Peak (m/d/h) Overall (m/d/h) Jan 1/9/0900 n/a n/a 1/9/0100 1/9/0900 Feb 2/3/0900 n/a n/a 2/2/1500 2/2/1500 Mar 3/5/0700 n/a n/a 3/5/0600 3/5/0700 Apr 4/14/1500 n/a n/a 4/6/1600 4/6/1600 May 5/13/1400 n/a n/a 5/31/1900 5/31/1900 Jun 6/24/1200 n/a n/a 6/30/0900 6/24/1200 Jul 7/3/1300 n/a n/a 7/26/1500 7/3/1300 Aug 8/18/1200 n/a n/a 8/17/1300 8/17/1300 Sep 9/1/1200 n/a n/a 9/1/0900 9/1/1200 Oct 10/14/1600 n/a n/a 10/18/0100 10/18/0100 Nov 11/28/0800 n/a n/a 11/28/0600 11/28/0800 Dec 12/5/0800 n/a n/a 12/5/0600 12/5/0600 Hourly Analysis Program v.4.1 Page 2 of 2
Monthly Energy Use by Energy Type - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 1. HVAC Energy Use Month Electric (kwh) Natural Gas (na) Fuel Oil (na) Propane (na) Remote HW (na) Remote Steam () Remote CW (na) Jan 420,059 0 0 0 0 109,733 0 Feb 379,440 0 0 0 0 85,700 0 Mar 422,267 0 0 0 0 40,881 0 Apr 411,634 0 0 0 0 14,126 0 May 432,128 0 0 0 0 6,366 0 Jun 430,635 0 0 0 0 0 0 Jul 455,901 0 0 0 0 0 0 Aug 451,099 0 0 0 0 0 0 Sep 432,928 0 0 0 0 0 0 Oct 432,165 0 0 0 0 4,605 0 Nov 412,611 0 0 0 0 25,788 0 Dec 423,369 0 0 0 0 81,710 0 Totals 5,104,236 0 0 0 0 368,910 0 2. Non-HVAC Energy Use Electric Natural Gas Fuel Oil Propane Remote HW Remote Steam Month (kwh) (na) (na) (na) (na) () Jan 95,879 0 0 0 0 0 Feb 86,600 0 0 0 0 0 Mar 95,879 0 0 0 0 0 Apr 92,786 0 0 0 0 0 May 95,879 0 0 0 0 0 Jun 92,786 0 0 0 0 0 Jul 95,879 0 0 0 0 0 Aug 95,879 0 0 0 0 0 Sep 92,786 0 0 0 0 0 Oct 95,879 0 0 0 0 0 Nov 92,786 0 0 0 0 0 Dec 95,879 0 0 0 0 0 Totals 1,128,899 0 0 0 0 0 Hourly Analysis Program v.4.1 Page 1 of 1
Monthly Energy Use by Component - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 1. Monthly Energy Use by System Component Component Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Air System Fans (kwh) 120392 108741 120392 116508 120392 116508 120392 120392 116508 120392 116508 120392 Cooling Electric (kwh) 34209 32828 45422 53577 67135 81116 96992 91460 80521 60683 46794 39553 Natural Gas (na) 0 0 0 0 0 0 0 0 0 0 0 0 Fuel Oil (na) 0 0 0 0 0 0 0 0 0 0 0 0 Propane (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote HW (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote Steam () 0 0 0 0 0 0 0 0 0 0 0 0 Remote CW (na) 0 0 0 0 0 0 0 0 0 0 0 0 Heating Electric (kwh) 263109 235750 254106 239276 242257 230742 236173 236903 233630 248742 247036 261076 Natural Gas (na) 0 0 0 0 0 0 0 0 0 0 0 0 Fuel Oil (na) 0 0 0 0 0 0 0 0 0 0 0 0 Propane (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote HW (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote Steam () 109733 85700 40881 14126 6366 0 0 0 0 4605 25788 81710 Pumps (kwh) 2349 2121 2349 2273 2349 2273 2349 2349 2273 2349 2273 2349 Clg. Tower Fans (kwh) 0 0 0 0 0 0 0 0 0 0 0 0 Lighting (kwh) 71094 64214 71094 68801 71094 68801 71094 71094 68801 71094 68801 71094 Electric Eqpt. (kwh) 24783 22385 24783 23983 24783 23983 24783 24783 23983 24783 23983 24783 Misc. Electric (kwh) 0 0 0 0 0 0 0 0 0 0 0 0 Misc. Fuel Natural Gas (na) 0 0 0 0 0 0 0 0 0 0 0 0 Propane (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote HW (na) 0 0 0 0 0 0 0 0 0 0 0 0 Remote Steam () 0 0 0 0 0 0 0 0 0 0 0 0 Hourly Analysis Program v.4.1 Page 1 of 1
Monthly Component Costs - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM Cost 3000 2500 2000 1500 1000 500 0 Air System Fans Cooling Heating Pumps Lights Electric Equipment Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Month 1. HVAC Component Costs Air System Fans Cooling Heating Pumps Cooling Towers HVAC Total Month January 1,471 418 3,215 29 0 5,133 February 1,430 432 3,100 28 0 4,990 March 1,475 557 3,114 29 0 5,175 April 1,476 679 3,031 29 0 5,215 May 1,490 831 2,999 29 0 5,349 June 1,406 979 2,785 27 0 5,197 July 1,413 1,138 2,772 28 0 5,351 August 1,411 1,072 2,776 28 0 5,287 September 1,422 983 2,852 28 0 5,285 October 1,476 744 3,050 29 0 5,299 November 1,444 580 3,061 28 0 5,113 December 1,466 482 3,178 29 0 5,155 Total 17,380 8,893 35,932 339 0 62,544 2. Non-HVAC Component Costs Month Lights Electric Equipment Misc. Electric Misc. Fuel Use Non-HVAC Total Grand Total January 869 303 0 0 1,171 6,304 February 844 294 0 0 1,139 6,129 March 871 304 0 0 1,175 6,350 April 872 304 0 0 1,175 6,390 May 880 307 0 0 1,187 6,536 June 830 289 0 0 1,120 6,317 July 834 291 0 0 1,125 6,476 August 833 290 0 0 1,123 6,410 September 840 293 0 0 1,133 6,418 October 872 304 0 0 1,176 6,475 November 853 297 0 0 1,150 6,263 December 866 302 0 0 1,167 6,322 Total 10,263 3,578 0 0 13,841 76,384 Hourly Analysis Program v.4.1 Page 1 of 1
Energy Budget by Energy Source - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 1. Annual Coil Loads Load Component (kbtu) (kbtu/ft²) Cooling Coil Loads 17,990,028 544.232 Heating Coil Loads 9,069,108 274.358 Grand Total 27,059,136 818.590 2. Energy Consumption by Energy Source Site Energy Site Energy Source Energy Source Energy Component (kbtu) (kbtu/ft²) (kbtu) (kbtu/ft²) HVAC Components Electric 17,415,654 526.856 62,198,764 1881.629 Natural Gas 0 0.000 0 0.000 Fuel Oil 0 0.000 0 0.000 Propane 0 0.000 0 0.000 Remote Hot Water 0 0.000 0 0.000 Remote Steam 368,910 11.160 368,910 11.160 Remote Chilled Water 0 0.000 0 0.000 HVAC Sub-Total 17,784,564 538.016 62,567,674 1892.790 Non-HVAC Components Electric 3,851,803 116.524 13,756,437 416.158 Natural Gas 0 0.000 0 0.000 Fuel Oil 0 0.000 0 0.000 Propane 0 0.000 0 0.000 Remote Hot Water 0 0.000 0 0.000 Remote Steam 0 0.000 0 0.000 Non-HVAC Sub-Total 3,851,803 116.524 13,756,437 416.158 Grand Total 21,636,367 654.541 76,324,111 2308.948 Notes: 1. 'Cooling Coil Loads' is the sum of all air system cooling coil loads. 2. 'Heating Coil Loads' is the sum of all air system heating coil loads. 3. Site Energy is the actual energy consumed. 4. Source Energy is the site energy divided by the electric generating efficiency (28.0%). 5. Source Energy for fuels equals the site energy value. 6. Energy per unit floor area is based on the gross building floor area. Gross Floor Area 33055.8 ft² Conditioned Floor Area 33055.8 ft² Hourly Analysis Program v.4.1 Page 1 of 1
Energy Budget by System Component - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM 1. Annual Coil Loads Load Component (kbtu) (kbtu/ft²) Cooling Coil Loads 17,990,028 544.232 Heating Coil Loads 9,069,108 274.358 Grand Total 27,059,136 818.590 2. Energy Consumption by System Component Site Energy Site Energy Source Energy Source Energy Component (kbtu) (kbtu/ft²) (kbtu) (kbtu/ft²) Air System Fans 4,836,564 146.315 17,273,444 522.554 Cooling 2,491,749 75.380 8,899,102 269.215 Heating 10,361,974 313.469 36,058,420 1090.835 Pumps 94,350 2.854 336,965 10.194 Cooling Towers 0 0.000 0 0.000 HVAC Sub-Total 17,784,637 538.019 62,567,931 1892.797 Lights 2,856,093 86.402 10,200,332 308.579 Electric Equipment 995,615 30.119 3,555,767 107.569 Misc. Electric 0 0.000 0 0.000 Misc. Fuel Use 0 0.000 0 0.000 Non-HVAC Sub-Total 3,851,707 116.521 13,756,099 416.148 Grand Total 21,636,344 654.540 76,324,030 2308.945 Notes: 1. 'Cooling Coil Loads' is the sum of all air system cooling coil loads. 2. 'Heating Coil Loads' is the sum of all air system heating coil loads. 3. Site Energy is the actual energy consumed. 4. Source Energy is the site energy divided by the electric generating efficiency (28.0%). 5. Source Energy for fuels equals the site energy value. 6. Energy per unit floor area is based on the gross building floor area. Gross Floor Area 33055.8 ft² Conditioned Floor Area 33055.8 ft² Hourly Analysis Program v.4.1 Page 1 of 1
Annual HVAC & Non-HVAC Cost Totals - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM HVAC 81.9% 18.1% Non-HVAC 1. Annual Costs Annual Cost Percent of Total Component ($/yr) ($/ft²) (%) HVAC 62,544 1.892 81.9 Non-HVAC 13,841 0.419 18.1 Grand Total 76,384 2.311 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area 33055.8 ft² Conditioned Floor Area 33055.8 ft² Hourly Analysis Program v.4.1 Page 1 of 1
Annual Energy Costs - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM HVAC Electric 81.9% 18.1% Non-HVAC Electric 1. Annual Costs Annual Cost Percent of Total Component ($/yr) ($/ft²) (%) HVAC Components Electric 62,543 1.892 81.9 Natural Gas 0 0.000 0.0 Fuel Oil 0 0.000 0.0 Propane 0 0.000 0.0 Remote Hot Water 0 0.000 0.0 Remote Steam 0 0.000 0.0 Remote Chilled Water 0 0.000 0.0 HVAC Sub-Total 62,543 1.892 81.9 Non-HVAC Components Electric 13,841 0.419 18.1 Natural Gas 0 0.000 0.0 Fuel Oil 0 0.000 0.0 Propane 0 0.000 0.0 Remote Hot Water 0 0.000 0.0 Remote Steam 0 0.000 0.0 Non-HVAC Sub-Total 13,841 0.419 18.1 Grand Total 76,384 2.311 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area 33055.8 ft² Conditioned Floor Area 33055.8 ft² Hourly Analysis Program v.4.1 Page 1 of 1
Annual Component Costs - INOVA BLDG INOVA HEART HAP 10/29/2003 psuae 06:02PM Cooling 11.6% 22.8% Air System Fans 4.7% Electric Equipment Heating 47.0% 13.4% Lights 0.4% Pumps 1. Annual Costs Annual Cost Percent of Total Component ($/ft²) (%) Air System Fans 17,380 0.526 22.8 Cooling 8,893 0.269 11.6 Heating 35,932 1.087 47.0 Pumps 339 0.010 0.4 Cooling Tower Fans 0 0.000 0.0 HVAC Sub-Total 62,544 1.892 81.9 Lights 10,263 0.311 13.4 Electric Equipment 3,578 0.108 4.7 Misc. Electric 0 0.000 0.0 Misc. Fuel Use 0 0.000 0.0 Non-HVAC Sub-Total 13,841 0.419 18.1 Grand Total 76,384 2.311 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area 33055.8 ft² Conditioned Floor Area 33055.8 ft² Hourly Analysis Program v.4.1 Page 1 of 1
Annual Energy and Emissions Summary INOVA HEART HAP 10/29/2003 psuae 06:02PM Table 1. Annual Costs INOVA BLDG Component HVAC Components Electric 62,543 Natural Gas 0 Fuel Oil 0 Propane 0 Remote HW 0 Remote Steam 0 Remote CW 0 HVAC Sub-Total 62,543 Non-HVAC Components Electric 13,841 Natural Gas 0 Fuel Oil 0 Propane 0 Remote HW 0 Remote Steam 0 Non-HVAC Sub-Total 13,841 Grand Total 76,384 Table 2. Annual Energy Consumption Component INOVA BLDG HVAC Components Electric (kwh) 5,104,236 Natural Gas (na) 0 Fuel Oil (na) 0 Propane (na) 0 Remote HW (na) 0 Remote Steam () 368,910 Remote CW (na) 0 Non-HVAC Components Electric (kwh) 1,128,899 Natural Gas (na) 0 Fuel Oil (na) 0 Propane (na) 0 Remote HW (na) 0 Remote Steam () 0 Totals Electric (kwh) 6,233,135 Natural Gas (na) 0 Fuel Oil (na) 0 Propane (na) 0 Remote HW (na) 0 Remote Steam () 368,910 Remote CW (na) 0 Hourly Analysis Program v.4.1 Page 1 of 3
Annual Energy and Emissions Summary INOVA HEART HAP 10/29/2003 psuae 06:02PM Table 3. Annual Emissions Component INOVA BLDG CO2 (lb) 0 SO2 (kg) 0 NOx (kg) 0 Table 4. Annual Cost per Unit Floor Area INOVA BLDG Component ($/ft²) HVAC Components Electric 1.892 Natural Gas 0.000 Fuel Oil 0.000 Propane 0.000 Remote HW 0.000 Remote Steam 0.000 Remote CW 0.000 HVAC Sub-Total 1.892 Non-HVAC Components Electric 0.419 Natural Gas 0.000 Fuel Oil 0.000 Propane 0.000 Remote HW 0.000 Remote Steam 0.000 Non-HVAC Sub-Total 0.419 Grand Total 2.311 Gross Floor Area (ft²) 33055.8 Conditioned Floor Area (ft²) 33055.8 Note: Values in this table are calculated using the Gross Floor Area. Hourly Analysis Program v.4.1 Page 2 of 3
Annual Energy and Emissions Summary INOVA HEART HAP 10/29/2003 psuae 06:02PM Table 5. Component Cost as a Percentage of Total Cost INOVA BLDG Component ( % ) HVAC Components Electric 81.9 Natural Gas 0.0 Fuel Oil 0.0 Propane 0.0 Remote HW 0.0 Remote Steam 0.0 Remote CW 0.0 HVAC Sub-Total 81.9 Non-HVAC Components Electric 18.1 Natural Gas 0.0 Fuel Oil 0.0 Propane 0.0 Remote HW 0.0 Remote Steam 0.0 Non-HVAC Sub-Total 18.1 Grand Total 100.0 Hourly Analysis Program v.4.1 Page 3 of 3