Jun 02, 2021 · The purpose of the work is to store the solar energy using Phase Change Materials (PCMs) to ensure hot water is available even at night time. The system consists of a shell & tube heat exchanger which is the core part of the system. Shell consists of heat transfer fluid which is mainly water and the tube consists of Phase Change Materials (PCM).
Solar water heater systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper and, because it is a good thermal conductor and has greater resistance to corrosion. Types of Heat Exchangers Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria:
Solar water heating systems use three types of heat exchangers:Liquid-to-liquid. A liquid-to-liquid heat exchanger uses a heat-transfer fluid that circulates through the solar collector, absorbs heat, and then flows through a heat exchanger to transfer its heat to water in a storage tank. Heat-transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather.
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