Project Report: SunMaxx Commercial Case Studies

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1 Project Report:

2 7 x ThermoPower-VHP30 Total Gross Surface Area: sq.ft Azimuth: 10 Incl.: gal/day 120 F Gas Boiler kbtu/hr StorMaxx NP Vol:1500 gal Existing Hot Water Heater Vol:600 gal Results of Annual Simulation Installed Collector Power: Installed Gross Solar Surface Area: Collector Surface Area Irradiation (Active Surface): Energy Produced by Collectors: Energy Produced by Collector Loop: kbtu/hr sq.ft MMBTU MMBTU MMBTU DHW Heating Energy Supply: Solar Contribution to DHW: Energy from Auxiliary Heating: MMBTU MMBTU MMBTU Propane Gas Savings: Propane Gas Savings: CO2 Emissions Avoided: DHW Solar Fraction: Fractional Energy Saving (EN 12976): System Efficiency: kbtu/sq.ft kbtu/sq.ft kbtu/sq.ft 1,526.7 m³ 1, therm 20, lbs 38.5 % 39.1 % 72.9 % Page 2

3 Basic Data Climate File Location: Climate Data Record: Total Annual Global Radiation: Latitude: Longitude: Washington DC "Washington DC" 5.46 MMBTU Domestic Hot Water Average Daily Consumption: Desired Temperature: Load Profile: Cold Water Temperature: Circulation: 1200 gal 120 F Constant Load February:55 F / August:63 F No System Components Collector Loop Number: Total Gross Surface Area: Total Active Solar Surface Area: Tilt Angle: Azimuth: ThermoPower-VHP sq.ft sq.ft DHW Standby Tank Volume: T*SOL Database Existing Hot Water Heater 600 gal Solar Preheating Tank Volume: Inc. StorMaxx NP 1500 gal. Auxiliary Heating Nominal Output: T*SOL Database Gas Boiler kbtu/hr Legend Original T*SOL Database With Test Report Solar Keymark Page 3

4 Solar Energy Consumption as Percentage of Total Consumption 5,000,000 4,500,000 [ Btu ] per week 4,000,000 3,500,000 3,000,000 2,500,000 2,000,000 1,500,000 1,000,000 Feb Mar Apr May Jun Jul Solar Contribution 87,899,591 Btu Aug Sep Oct Nov Dec Total Energy Consumption 228,485,827 Btu Daily Maximum Collector Temperature [ F ] Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec These calculations were carried out by - the Simulation Programme for Solar Thermal Heating Systems. The results are determined by a mathematical model calculation with variable time steps of up to 6 minutes. Actual yields can deviate from these values due to fluctuations in climate, consumption and other factors.the system schematic diagram above does not represent and cannot replace a full technical drawing of the solar system. Page 4

5 Energy Balance Schematic Legend Collector Surface Area Irradiation (Active Surface) Optical Collector Losses Thermal Collector Losses Energy from Collector Array Solar Energy to Preheating Tank Internal Piping Losses External Piping Losses Tank Losses Preheating Tank to Tank Tank Losses (S) Final Energy Supplementary Energy to Tank Heating Element DHW Energy from Tank Page 5 1,206 therm 23,507 kbtu 6,923 kbtu 901 therm 896 therm 394 kbtu 156 kbtu 6,034 kbtu 879 therm 1,635 kbtu 2,027 therm 1,406 therm 0 kbtu 2,224 therm

6 Glossary Collector Surface Area Irradiation (Active Surface) Energy Irradiated onto Tilted Collector Area (Active Solar Surface) Optical Collector Losses Reflection and Other Losses Thermal Collector Losses Heat Conduction and Other Losses Energy from Collector Array Energy Output at Collector Array Outlet (i.e. Before the Piping) Solar Energy to Preheating Tank Collector Array Energy Minus Piping Losses Internal Piping Losses Internal Piping Losses External Piping Losses External Piping Losses Tank Losses Heat Losses via Surface Area Preheating Tank to Tank Heat from Preheating Tank to Tank Tank Losses (S) Heat Losses via Surface Area Final Energy Final Energy Current into System. This can flow in as natural gas, oil or electricity (not including solar energy) taking efficiency levels into account Supplementary Energy to Tank Supplementary Energy (e.g. Boiler) to Tank Heating Element Energy from Heating Element DHW Energy from Tank Heat for DHW Appliances from Tank (Exluding Circulation) Page 6 Report-/Druckmodul List & Label Version 13: Copyright combit GmbH