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Solar water heaters usually collectors, insulation water storage tanks, connecting pipes, brackets and control system.
By using the classification, can be divided into seasonal water heater, water heater all year round as well as auxiliary heat source for all-weather solar water heaters. The principle and structure by collectors can be divided into plate-type water heater and vacuum tube water heaters. By working fluid flow in different ways, are generally divided into stuffy drying type, loop type and DC type of three.
Solar collector solar water heater solar energy received and converted to heat the core components and key technologies, the cost of solar water heaters account for about one-half of the total cost of about. All glass tube solar water heater according to the different thermal medium can be divided into all-glass vacuum tube and heat pipe vacuum tube collector (glass and metal combination) of two collectors. Their key components is the vacuum tube or heat pipe vacuum tube.
Currently the most popular all-glass vacuum tube like a thermos bottle stretched by two tube length is 1.2 meters or 1.5 meters, respectively, 37 mm in diameter and 47 mm concentric tube formed by the vacuum. All-glass vacuum tube materials, processes and simple structure, good reliability, with great prospects.
Solar water heater storage tank is a device, its structure, capacity, insulation and materials will directly affect the water heater's performance and the quality of operation.
Types of water tanks, divided by the square shape, flat box type, cylindrical, spherical tank; method divided by placing two vertical and horizontal; state divided by atmospheric pressure open-water tank and pressure of the closed water tank; according to whether the auxiliary heat source can be divided into ordinary water tank and water tank with auxiliary heat source; by way of heat exchanger water tanks can be divided into direct and secondary indirect heat exchanger heat exchanger tank.
Production quality of the material tank, the tank's pressure, temperature, seepage and water quality greatly. Currently used materials are steel water tanks were treated with preservatives or enamel, galvanized steel, rust-proof aluminum, plastic or glass poison steel, stainless steel panels. Thermal properties of water tanks, including heat of the heating characteristics of thermal insulation properties. Heat of the hope that the hot water tank can be released for easy use. Vertical can be used for domestic water tank, cold water from the top into the bottom, hot water outflow from the top. Heating characteristic of most of the upper part of the water tank is heated up, then lower the heat up slowly. Insulation properties that decrease temperature speed, and sealing of water tanks, insulation materials, ambient temperature, the size of other related water capacity.
Author: Haining City, New Energy Technology Co., Ltd. Sang Chao
website: www.sunsurf.com.cn
main product: solar heater、solar energy
