AMERICAN PSYCHOLOGICAL ASSOCIATION BUILDING 750 FIRST STREET, NE WASHINGTON, DC G Place Limited Partnership.

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1 AMERICAN PSYCHOLOGICAL ASSOCIATION BUILDING 750 FIRST STREET, NE WASHINGTON, DC OWner: Submitter: ~ Description: G Place Limited Partnership. Michael R. McCormick Director of Engineering Services th Street, NW, Suite 500 Washington, DC Office Building 368,300 Square Feet Design Features HVAC Cold air distribution system using refrigeration system water and chillers to produce 39 degree chilled water, 43 degree low temperature air with VAV mixing boxes. Lighting Fluorescent three U-tube (T-8) fixtures with electronic ballasts. Building Envelope Reflective glass and high thermal resistance walls and roof. Other Contributing Firms B & A Consulting Engineers 1900 Century Place, Suite 200 Atlanta, GA (Cold air system design, energy studies) 12

2 EncomP Energy Conservation Competition cic PEPCO 1900 Pennsylvania Avenue, N.W., Washington, D.C (202) Office Use Only Rec'd Pages Dist. Reise I. Building Identification Name of Building American Psychological Association Building 750 First Street, N.E., Washington, DC Building Location Building Owner G Place Limited Partnership Submittor's NamelTitie Michael R. McCormick, Director of Engineering Services Submittor's Address th Street, N.W., Suite 500 Washington, DC Submittor'sPhone (202 ) Ext. II. Category Selection and Building Data A. Select the category within which this entry should be judged. Check one. x New Building - New Building - 15,000 square feet or less more than 15,000 square feet Existing Building - Existing Building - Industrial' 15,000 square feet or less more than 15,000 square feet B. Building Type x Multifamily Residential Office Building Hotel/Motel Retail Store Educational Facility Health Care Facility Other (describe) C. Approximatetotal area: 368,300 sqaure feet or units Approximateconditioned area: 336, 900 square feet or units

3 III. Description of Energy-Related Features Complete the information below as indicated. Additional information may be presented in the supplemental section if desired..' A. In which areas were energy-efficient measures taken? x HVAC Electrical Distribution X Lighting X Education/Awareness X Building Envelope Other Water Heating Other Industrial Process (describe). B. EXISTING BUILDING AND INDUSTRIAL ENTRIES - During what period of time were the improvements made? to NEW BUILDING ENTRIES - When was the building completed or when is it scheduled to be completed? December 24, C. In the following section please list, as accurately as possible, the following information. In the first column give a brief description of each energy-efficient feature of the building (i.e., "installed heat wheel"). In the second column, for existing buildings, list the cost of installing this feature. For new buildings, indicate the incremental cost of installing this feature over standard alternatives. In the third and fourth columns, please list the savings realized or expected from this feature both in energy saved per year (e.g., 50 gallons #2 fuel oil per year, 10,000kWh per year, etc.) and in dollars per year. Be as complete as possible. Summary statistics about your total investment in energy improvements and total energy savings should be presented in the next section. ~3~ Low Temperature Energy-Efficient Energy/Year 141, ,350 66,642 Credit Dollars/Year 281,714 Cost $88, ,000 Installation $25,000 $17,918 $261,436 $38,101 $75,744 kwh/yr kwh/yr $250,000 kwh/vr Savings Central Plant Air, Walls UMixing 39-2X2 & Tube Cold High VA and T-8 VBoxes Water Thermal Roof Resistance

4 cost $ 5,000 32,226 kwh/yr $8,665 D. Were there any unusual conditions or special requirements that affected your choice of energy conservation options? If so, please list them here in brief and elaborate in the supplemental section, if desired. Due to the extreme compact floor to floor height (18" ceiling plenum) cold air was used to obtain small ductwork. Most of the medium pressure system consist of 9" 0 duct work. IV. Energy Consumption and Cost A. EXISTING BUILDING AND INDUSTRIAL ENTRIES - Please provide below the total consumption and cost of fuels for this facility in the twelve months prior to implementing any changes, and in the twelve months after the changes were complete. (Use projections of 12-month data if necessary.) NEW BUILDING ENTRIES - Please provide whatever actual consumption and cost data are available in the first column and insert twelve-months of actual or projected usage data in the second column. Electricity kwh max. kw-summer max. kw-winter cost Natural Gas therms cost Data for period of Jan to Dec 8,806,832 2,780 2,656 $750,851 Data for period of to ( actualor projected) 7,288,529 2,232 2,113 $408,226 Oil-Grade # gallons cost Steam pounds cost Other Btu

5 B. What is the total energy consumption of this facility on a per-square-footof conditioned space? Convert all types of fuel to. Please use the conversion factors provided in Section VIII. Usagebeforechanges" Usage with improvements 89,219 Btu/Sq. Ft Btu/Sq. Ft. wfornew buildings, provide the Btu/Sq. Ft. consumption anticipated if energy-efficient options had not been used (if available). C. What was the total cost of implementing, purchasing or installing the energy-efficient features of this facility? $8, What are the total expected savings per year (in dollars) of these actions?' $342,625 5'1'5,//7 What is the simple payback (i.e., cost divided by savings per year) of implementing these changes? (Less than 1 Month) V. Credits and Authorizations A. What was the submittor's function in this project? Responsible for implementing and coordinating all activities associated with applying the Pepco New Building Design Program to this project. With what firm was the submittor associated at the time the above-mentioned work took place? Trammell Crow Company Washington Office Building Division B. What other firms or persons contributed to this project? Name B&A Consulting Engineers Address 1900 Century Place, Suite 200 Atlanta, GA Function Performed B&A developed. engineered and administered construction of the cold air system. B&A performed energy studies for Pepco New Building Design Program. Name Address Function Performed C. I certify that the above information provided is accurate and complete to the best of my knowledge. Submittor's Signature:/1't~~ (2k~1~k

6 D. I grant permission to ENCaMP and its individual sponsors to use this entry, or any portion of it, and the information contained herein for publication, publicity, and to demonstrate energy management techniques to others. ~ or authorized representative: -=...c=--. Type Signature or print of building owner Robert ~ L. Cha ares owner's or representative's narn~ Address: th Street, N.W., Suite 500 Washington, DC Telephone: (202) If this submission is selected as an ENCaMP winner, please indicate the name(s) and format for the award. 750 First Street, N.E. Washington, DC VI. Project Summary Please provide a brief summary of the project highlights. This summary should be no longer than one page (81/2 x 11 inches) typed, double-spaced. VII. Supplemental (optional) Supplemental information may be provided in accordance with the guidelines stated in the "ENCaMP Entry Rules." VIII. ENERGY AND POWER CONVERSIONS TO CONVERT: FROM: Kilowatt Hours (kwh) MCF's Natural Gas CCF Natural Gas CF Natural Gas Therms Natural Gas Horsepower Barrels (bbls) Barrels Crude Oil Gallons NO.2 Heating Oil Barrels NO.5 Residual Fuel Barrels NO.6 Heating Oil Gallons Gasoline Barrels Liquified Propane Gas (LPG) Short Tons Coal Watts (W) Kilowatts (kw) Pounds Steam (Ibs) Tons Refrigeration TO: Cubic Feet Therms kw's /min Gallons /hour Watts /hour MULTIPLY BY: 3, ,000 1, , ,825, ,690 6,287,000 6,286, ,000 4,009,950 24,500, ,000 FIVE COPIES OF THIS ENTRY FORM, EACH COMPLETE WITH ATTACHMENT(S), MUST BE IN THE ENCOMP OFFICE, NO LATER THAN AUGUST 30,1991 ENCOMP ENERGY CONSERVATION COMPETITION % PEPCO COMMERCIAL ENERGY SERVICE DEPARTMENT 1900 PENNSYLVANIA AVENUE, N.W. WASHINGTON, D.C (202)

7 750 FIRST STREET PROmCf SUMMARY The criteria of our New Building Energy Design consisted of a one-year or less payback and to reduce annual electrical and maintenance operating expenses. To accomplish this, the design had to overcome ceiling plenum constraints (18") by using a cold air distribution system. This was accomplished by utilizing insulated -medium pressure 9" round duct work supplied by two air handler units per floor with high efficiency motors. The horsepower was greatly reduced with 43 degrees air supply. In order to provide the necessary supply air temperature, the refrigeration system water was designed with two chillers piped in series with the chilled and condenser water in a counter flow arrangement. The condenser water enters at 85 degrees and leaves at 100 degrees allowing the chillers to produce 39 degrees chilled water at a peak load efficiency of.64 KW per ton. The final step to the energy design was by selecting a three (T-8) V-tube 2x2 fixture with electronic ballast as our standard fluorescent lighting fixture that not only reduced energy consumption but aesthetically appealing to our tenants.

8 District of Columbia Buildim!: Industry Association November 18, 1992 o Facility Description American Psychological Association Building 750 First Street, N.E., Washington, D.C. Office Building - 368,300 square feet Current Electrical Profile - 7,220,415 KWH/$496,468 o Project Description Original Equipment Rebated Technologies Two ton parallel three stage centrifugal chillers rated at.66 KW per ton with 85/95 F condenser water, producing 43 F chilled water supply. Fan powered variable air volume system with two (2) air handling units with standard motors, per floor with inlet vanes, discharging 55 F supply air. Building standard lighting system consisted of four lamp standard ballast fixtures, rated at 2.7 watts per square foot. Two ton parallel three stage centrifugal chillers rated at.64 KW per ton with 85/100 F counter flow condenser water, producing 39 F chilled water supply. Same VAV system using high efficiency fan motors discharging 43 F supply air, reducing fan horsepower. Building standard lighting system upgraded to 2x2-T-8 three tube fixtures with electronic ballast, rated at 1.8 watts per square foot. o Economics Estimated Annual Savings 1,494,640 KWh/yr 557 KW Demand $408,200 1

9 Payback Period Pepco Rebate $734,000 - Energy Features Expenses $408,200 - Energy Savings Years $153,000 - Rebate Design Study Incentive $162,462 - Total Pepco Contribution Electric Cost Per Square Foot (HV AC & Lighting) Old New $1.95 $.84 o Miscellaneous The 1990 NBD program and especially with the revised 1992 NBD program provides a good incentive to encourage ownership to spend money on conversation up front whereby creating a marketing strategy with reducing long-term operating expenses for the tenant. During the early stages of the NBD program, Pepco's technical support group's experience was limited, since the APA project was one of the first NBD applications. Once working through the initial design study, the technical support group provided clear and decisive procedures with implementing our NBD project. 2