| SOLAR WATER HEATING CALCULATOR | |
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Sizing example for a household of four people: | |
| Daily hot water requirement | 50 litres per person (200 litres) |
| Hand basins | 5 litres per person per day (20 litres) |
| Dish washing | 3 litres per meal, assume 2 meals at home daily (24 litres) |
| Add compensation for heat loss due to cold water mixing + pipework | 244 litres x 23% (56 litres) |
| No washing machine added | - |
| Total hot water requirement | 300 litres per day = (16 kWh/day) |
| Solar Water Heating System Calculator | |||
| Input the number of people in your house, and let the Calculator show you the rest. | |||
| Number of people living in your house? | |||
| Hot Water used per day (Litres) | Electricity used per month (kWh) | Electricity saved per month (RAND) | |
0l |
0kWh |
R0 |
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| Systems installed FROM R14,130.00 (excl. VAT) | |||
| Finance your Solar system using your Access Bond with monthly repayment of | |||
| NETT MONTHLY SAVINGS | R0 |
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| NOTE: Savings are influenced by hot water consumption patterns & system efficiency. | |||
| Domestic Electricity cost to double over next 5 years | |||||
| Assume increases of 20% per year, starting 2008. | |||||
| Year | 2008 | 2009 | 2010 | 20011 | 2012 |
| Your Elec. Tariff (cents/kWh) | |||||
| Savings/annum | |||||
| Accumulated Savings | |||||
| % Annual Return on Investment | |||||