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Heating - Solar water heater - Swimming pool - Outdoor
Template assignment
Base case
Proposed case
Solution
The worked-out solution is the data file selected from within the RETScreen Project Database. The user automatically downloads the Project Database file while downloading the RETScreen software.
Template assignment
Base case
- 400 m2 municipal pool is used 10 h/d during warmer months
- Season of use is last week in May through first week in September
- Water temperature is maintained at 25 °C by natural gas heater
- Fuel rate is $0.40/m³
- Cover is placed over water surface when pool not in use
- Makeup water is 25% per week
- Wind sheltering and solar shading are each about 20%
Proposed case
- Install 20 Techno-Solis model Swimmaster SM / C20TS10 unglazed solar water heater collectors to reduce fuel consumption
- Collectors face due south at a slope of 25°
- Pool water temperature is reduced to 24 °C
- Reduce time of use to 8 h/d
- Makeup water is reduced to 20% per week
- Cost of installation of solar water heaters is $120/m²
- Assume water pumping cost of 5 W/m²
- Losses for solar water heater are about 4% and for balance of system are 3%
- Electricity rate is $0.10/kWh
Solution
The worked-out solution is the data file selected from within the RETScreen Project Database. The user automatically downloads the Project Database file while downloading the RETScreen software.
