GSHP Design Report Project: TowPro Residence Prepared: 05-Jun-2013 Prepared By: Ryan Carda

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1 GSHP Design Report Project: TowPro Residence Prepared: 05-Jun-2013 Prepared By: Ryan Carda

2 Why Choose a LoopLink Certified Designer? Choosing the right system designer for your geothermal heating and cooling system is a crucial first step to assuring your future comfort and long term financial savings. LoopLink Certified Designers have recognized that a residential/light commercial geothermal system deserves the same attention to detail afforded to a commercial design. This ensures the lowest cost of operation, minimizes system maintenance and guarantees the highest level of comfort within your space over the life of the system. By selecting a LoopLink Certified Designer, you can breathe easy knowing your designer: Has demonstrated a comprehensive understanding of residential and light commercial geothermal system design. Is trained and qualified in the use of LoopLink for the completion of design calculations and creation of design reports. Understands and can justify specific equipment selections and their impact on the performance of your geothermal system. When choosing a geothermal system designer be sure to look for the LoopLink Ceritified seal. This symbol lets you know that your designer has been trained not just by the makers of the earth s best geothermal design software but by the authors of the industry standard Design and Installation Manual issued by the International Ground Source Heat Pump Association (IGSHPA. 1 of 11

3 TowPro Residence Honey Brook, Pennsylvania 05-Jun-2013 RE: GSHP System Design Report for TowPro Residence System Loads System Loads or Peak Loads are calculated based on a variety of details for an individual residence. Assumed occupancy levels, the number of appliances operating, the number of doors & windows and the tightness of the construction all contribute to the amount of energy required to maintain the thermostat set points given the historical extreme weather conditions in your area. The peak loads used in this report were provided as listed in the following table. 1 kbtu/hr = 1,000 Btu/hr Zone Total Heating Load (kbtu/hr Total Cooling Load (kbtu/hr Zone SHF Block Load Total of 11

4 Equipment Schedule Based on the provided loads, the recommended heat pump schedule for this system is as follows: High Cap. Low Cap. 1 kbtu/hr = 1,000 Btu/hr Zone GSHP QTY Heat 1 Cap. (kbtu/hr Cool 1 Cap. (kbtu/hr Water 2 Flow (GPM Air 3 Flow (CFM Block Load ClimateMaster - Tranquility TT High Capacity Totals Low Capacity Totals All capacities shown are total. 2. For water-to-water equipment, source and load water flows are assumed equal. 3. Air flow rates are reported on a per heat pump basis. For total air flow in a zone, multiply the reported air flow by quantity. 3 of 11

5 Vertical Bore 1 Earth Temperature Data Location Deep earth (below 20ft temperature is a function of the average annual air temperature in your region and remains relatively constant regardless of season. Deep Earth Temp ( T G 55.0 F Formation Details The thermal properties of your formation are based on the formation s composition and have a direct impact on the scale of your loopfield. Thermal Conductivity 1.20 Btu/hr ft F GHEX Summary Cooling is dominant Grout is used inside of all bores in order to protect the deep earth environment from surface contaminants and to provide a more effective contact surface with GHEX piping that optimizes heat transfer between the fluid pumped through your GSHP and the earth. Grade Grout T.C Btu/hr ft F Backfill Formation Granular Backfill EWT MIN EWT MAX 35.6 F 79.3 F Grout Bore Diameter (D B Pipe Diameter (D p 5.00 in 1.25 in Bores per Row (15 max n rows (4 max S B TOP VIEW (GENERIC S B S B DETAIL (GENERIC D B L B,UGL Bores in Series (N BIS Layout Rows (n rows Bores per Row Number of Bores Bore Spacing (S B Bore Depth (L B Adj. Bore Depth * (L B,UGL System Run Fraction ft 246 ft 246 ft *Adj. Bore Depth is the adjusted bore depth. This is the depth of bore that should be used to accommodate unbalanced ground loads over time. 4 of 11

6 Energy Prices Standard Electric Rate $/kwh Natural Gas Rate $/ccf ASHP Electric Rate $/kwh Propane Rate $/gal GSHP Electric Rate $/kwh Fuel Oil Rate $/gal Energy Price Inflation Rates The following inflation rates are applied to long term economic analyses to give a more realistic evaluation of the long-term cost benefits of using GSHP. Electricity 2.000% Propane 3.500% Natural Gas 3.500% Fuel Oil 3.500% Equipment Efficiencies The following efficiencies are for air systems, hot water generation efficiencies can be found on the hot water generation page. NOTE: GSHP efficiencies shown below are system wide averages which include pumping and applicable resistance energy. Efficiencies for individual GSHP zones can be found on the zone pages. Heating Cooling GSHP (COP AVG 4.01 GSHP (EER AVG Electric Resistance (COP H 1.00 A/C (SEER ASHP (HSPF 5.81 ASHP (SEER Natural Gas (AFUE 92.00% Propane (AFUE 90.00% Fuel Oil (AFUE 80.00% 5 of 11

7 Economics: Operating Cost Summary Actual costs and savings may vary from those reported. The methods of calculation and the data used are designed to approximate the total cost and savings of the GSHP system based on the weather conditions for an average year in your area. Additionally, the assumed rates of inflation and the unit prices for energy are subject to change according to the economy and your energy provider. Annual Operating Cost by Technology System Type Heating Cooling Total vs. GSHP Ground Source Heat Pump (GSHP $ $ $ ASHP $ $ $1, Propane $1, $ $1, Fuel Oil $1, $ $1, $ $1, $1, of 11

8 Economics: Operating Cost Summary Annual CO2 Emissions by Technology Geothermal heat pumps generate NO DIRECT EMISSIONS however, even green heating and cooling technologies like GSHPs produce upstream carbon emissions. The amount of these emissions depends on the power generation method in your area. In areas where the primary power generation technology is nuclear, hydroelectric, wind turbine or solar, the upstream carbon emissions are minimal. However, the majority of the power in the United States is generated by coal fired power plants which emit a relatively higher volume of CO 2. The emissions shown in the graph below are adjusted based on the mix of power generation methods in your region. Note that for natural gas, propane and fuel oil, only the point of use carbon emissions from the combustion of the fuel is considered not the upstream emissions resulting from their production. 7 of 11

9 Economics: Cost of Ownership Actual costs and savings may vary from those reported. The methods of calculation and the data used are designed to approximate the total cost and savings of the GSHP system based on the weather conditions for an average year in your area. Conventional vs. GSHP Based on the details of your loan(s, a reasonable operating cost comparison between a properly sized and installed GSHP system and a conventional system may be made. Air Source Heat Pump (ASHP GSHP Installation Cost $3, Installation Cost $8, Incentives Incentives $2, Actual Cost $3, Actual Cost $5, Loan Amount $3, Loan Amount $5, Loan Interest Rate 8.000% Loan Interest Rate 8.000% Loan Term 0 years Loan Term 0 years Down Payment Monthly Payment (P&I only Down Payment Monthly Payment (P&I only Life Cycle Cost Long term cost projections include the replacement costs associated with each system. The equipment cost is a percentage of the first installation cost applied to the total cost of ownership at the end of the service life for each piece of equipment. Air Source Heat Pump (ASHP GSHP Service Life 12 years Service Life 25 years Equipment Cost 80% Equipment Cost 50% Loan Interest Rate 8.000% Loan Interest Rate 8.000% Loan Term 0 years Loan Term 0 years Down Payment Down Payment 8 of 11

10 Economics: Cost of Ownership Simple Payback GSHP Install Cost $5, Conventional Install Cost $3, Conventional Operating Cost $1, GSHP Operating Cost $ $2, $ Simple Payback Period 3.7 years Short Term Savings Monthly Operating Savings Difference in Monthly Payment Conventional Op. Cost $90.27 Payment w/ GSHP GSHP Op. Cost $43.31 Payment w/ Conv. Monthly Op. Savings $46.96 Incremental Payment Monthly Operating Savings $46.96 Incremental Payment Monthly Savings w/ GSHP $46.96 Monthly Savings w/ GSHP $ Annual Savings w/ GSHP $ Year Savings Air Source Heat Pump (ASHP GSHP Adjusted Install Price Adjusted Op. Cost Ownership Cost $13, $43, $57, Adjusted Install Price $13, Adjusted Op. Cost $21, Ownership Cost $35, Conventional Ownership Cost $57, GSHP Ownership Cost $35, Year Savings $22, of 11

11 Economics: Cost of Ownership Cost of Ownership: Conventional vs. GSHP The cost of ownership is a sum of operating costs and loan payments over the estimated 30 year life of a GSHP system including initial costs and fuel inflation rates. The figures represented in the graph below and the following tables assume that both systems are running at their peak efficiency throughout the full 30 year span. 10 of 11

12 Ground Source Heat Pump (GSHP Total Cost Over 30 Years Total Cost Over 30 Years Year Purchase Price Operating Cost Ownership Cost Purchase Price Operating Cost Ownership Cost 30 Year Cost of Ownership Table $1, $5, $4, $1, $1, $1, $1, $1, $1, $1, $1, $ $ $ $ $9, $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ Air Source Heat Pump (ASHP $8, $35, $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $5, $ $ $ $ $ $ $ $ $ $ $ $6, $ $1, $1, $1, $5, $1, $1, $1, $3, $1, $1, $1, $ $57, $ $ $ $ $ $ $ $3, $ $ $1, $1, $1, $1, $1, $7, $1, of 11 $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1, $1,244.35