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About Pressurized and Non-Pressurized Solar geyser22/10/2014

Theoretical explanation: Integrated pressurized solar heater called the phase-change thermal conductivity full- pressure solar water heater, which uses phase-change thermal conductivity type collector tube is flat, phase change heat pipe and heat formed aluminum wings. The sun , the heat selective absorbing coating the collected via heat transfer to the aluminum wing phase change heat pipes, phase change heat transfer working fluid within the heat pipe, using phase change heat transfer water tank water to complete heat. Integrated pressurized solar geyser pressure state (size and pressure within the local network consistent water pressure) under top water use that rely on the hot water tank Shui pressure ejection. When used, should ensure that water valve normally open, and not without water. Due to the flat water, it does not appear minor damage, the possibility of water out of the FCL.

Compare the advantages and disadvantages: Non-pressurized solar water heater called the line of all-glass heat collector solar water heater, vacuum tube and between its tanks relies on sealing gasket seal; it cannot withstand the pressure. Non-pressurized solar water heater in the state without pressure drop of water use, that gap will depend on the release of water inside the tank. The main lines of the lower part of the tank inlet / outlet and overflow pipes: the water tank is full , the overflow pipe overflow alarm, turn off water valve; When used, the water fall under gravity to rely on the inlet / outlet pipe outflow In this case the role of qi from the overflow pipe. Due to the non-pressure water heater vacuum tube, so if I just damaged, the water inside the tank will all flow out.

solar water heater drawback is: Due to the lower water temperature in the winter solar generally reach four, fifty degrees, the temperature of the bath also about forty-five degrees, the principle is the pressure of hot water and then with cold water top (just like the water heater usage, If the water heater temperature burn about 45 degrees, it is basically no water cannot wash a few minutes). Because the cold and hot water in the tank to mix and heat exchange, resulting in lower utilization of hot water. Common horizontal tank mixing with water is more serious; in order to meet the water needs to be enabled to continue heating electric heating. Vertical tanks are a better solution to this problem.

Non-pressure (drop type) disadvantages: Water by drop, if the distance between the roof and the water points less than 7 meters, then the water pressure is not. There are restrictions on water at the time. It simply is, is a closed pressurized tank, water tank liner is thick, can be placed anywhere in the home, such as for example the bathroom or living room, by the water pressure of the water, the advantage of avoiding hot and cold water bath, the whole system similar to the solar tube; non-pressure tank is open at the top of the tank has vents, water gravity drainage, water needs to be placed on the roof.

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