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Heating - Solar water heater - Swimming pool - Indoor
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
- 48 m² pool is used 10 h/d year round
- Water temperature is maintained at 28 °C by natural gas heater
- Fuel rate is $0.40/m³
- Cover is placed over water surface when pool not in use
- Water changes and pool activity levels require 7% makeup water per week
Proposed case
- Install 10 EnerWorks model COL-4x8-NL-SG1-SH10 glazed solar water heater collectors to reduce fuel consumption
- Collectors are roof mounted at 25° slope facing the equator
- Pool water temperature is reduced to 25 °C
- Reduce time of use to 8 h/d
- Makeup water is reduced to 5% per week
- Cost of installation of solar water heaters is $500/m²
- Assume water pumping is 10 W/m² of collector, electricity rate is $0.10/kWh
- Losses for solar water heater are about 4% and for balance of system are 3%
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.
