Heating - Solar water heater - Swimming pool - Outdoor

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.