At present, the widespread use of solar energy. Since Thailand is located in or near the equator in the heat. The solar energy is about 5.05 kWh / m2 of solar power is to be utilized in various fields. This research has produced a solar hot water with solar collector pattern Flat 2 m2 the pump size 100 W and generation systems, solar water heating with heat pump size 3 kW calculate the coefficient of performance of heat pumps and performance. The solar panel of the analysis showed that the coefficient of performance of the heat pump system is in the range from 4.2 to 5.5 the efficiency of solar energy in the range from 43.8 to 52.6% for the same system of slaughtered animals. 30 kW electric heater hot water at a temperature of 62 ° C in the air and spinning wool boiled pig modular. Volume of water, 2,400 liter, which is the cost of each month, about 12,000 - 18,000 baht will consider the technology of hot water from the right and from the valuation economics were to select the system of hot water and proper amount. the energy used to produce hot water is solar hot water system. The expenditure bill 887.6 baht per year and produce hot water heat pump is about 26,628 baht per month spending bill.
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