Thermal efficiency and cost analysis of solar water heater ...
2018-12-17u2002·u2002The payback period is the length of time needed (in years) to recover the initial investment. In this section, we compare the cost of solar water heater made in Rwanda and the cost of heating water using electricity. The cost of solar water heater made in Rwanda by Tumba College of Technology is $900 with 2.77 m 2 and 200 L of tank capacity ...
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