Solar water heating system is an economically viable investments in larger households that use a lot of hot water. Thus houses that exceed three bedrooms in Kenya ,should consider installing one . By installation of Solar water heaters to your home, you reduce the dependence of non-renewable energy and you’re helping to cut greenhouse gas emissions.
Specification of Solar Water heating system in Kenya
The capacity of a solar hot water system is specified as Liters Per Day(LPD).Household occupants use the water from the storage tank to bathe, wash dishes and wash clothes. About 37 percent of the sun’s heat makes it to your hot water faucets. The rest is lost to the air surrounding the collector, piping and water-storage tank. The intensity of solar radiation varies throughout the day, hence capacity cannot be specified in terms of hourly output.
Solar water heating systems are sized according to demand for hot water. The more hot water you use, the larger the storage tank and collector panel area should be. The number of people living in your house is a good guide for how large the system should be.
These numbers below are a rough guide given as per Seven SS solar water heaters in Kenya. The actual tank size and collector area you need will depend on specific household situation, the system you choose, and other needs you may have for the hot water.
It is estimated that one person uses between 10-20 liters of water for a shower per bath for a 10minutes bath, while using a bathtub may take between 50-70 liters of water. If connected to the dishwasher and a washing machine the amount of hot water used may range between 40-50 litres per cycle. This is the estimate for a typical day at 60 degrees Celsius water output. It is important to factor in the days that there is typically no sun and the yield of hot water might be low.
On the type of solar water heater to choose Evacuated tubes work best in cold, cloudy climates. For systems that need to withstand high operating temperatures, pressurized heat pipe systems works best. Pressurized Evacuated tubes are also preferable for year-round home-heating and -cooling applications.
As long as the solar water heating system has been specified and installed properly, it should perform well. We always carry out a site visit to determine the capacity and type of solar water heater that is suitable for your household.
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