Such as the title, I hope to explain the detailed and easy to understand. I know that the pressure is the number of hot water into the number of cold water to add, is the automatic replenishment. General non pressure to run out of hot water, artificial Sheung shui. But I heard that there are also non pressure water heater through a secondary water tank to achieve automatic replenishment, if so, then the non pressurized water heater with the pressure of the water heater what is the difference? In addition, I saw some of the water heater tank above there is a small water tank, it is not sub tank it? Pressurized water heater above the tank should not need to install a small tank to achieve automatic replenishment, right?
Pressure type subdivision: full pressure and water tank pressure two, full pressure collector and water tank is closed, the system with pressure operation. Pressure depends on the local municipal water supply pressure, another collector open with the atmosphere, while the tank pressure.Two kinds of solar water heater when the cold water with hot water heaters and water heaters similar to the water flow rate is very comfortable. Once the water temperature rise (in the pressure conditions of the boiling point will increase with the increase in pressure) pressure relief valve (safety valve) is the key! Because hot steam can push the train all the way up! Currently in the use of solar thermal industry, this collection of hot weather conditions are not afraid of overheating. Many products lack of humane care design! Non pressure is the opening of the whole system and the atmosphere, the water temperature will not exceed 100 degrees! (really good when the sun can boil hot water pressure drop) depends on the installation of 10 meters tall, 0.98 kg! My value of hot water pressure to reach 1 kg before they feel comfortable.
The non pressure water heater is called the straight line type all glass vacuum tube solar water heater, because the vacuum heat collecting tube and the water tank are sealed by the sealing rubber ring, it can not bear the pressure. The non pressure water heater is used in the state of no pressure, and the water in the water tank is separated by a fall. The main line for water tank inlet / outlet pipe and an overflow pipe: the water tank is full, the overflow pipe overflow alarm, turn off the water valve; when using hot water, depending on the fall under gravity by the inlet / outlet pipe outflow, the overflow pipe air effect. Because there is water in the vacuum tube of the non pressure water heater, so if there is a damage, the water in the tank will flow out. But the sun music brand all glass vacuum heat collection tube for high borosilicate glass, natural disaster damage possibility is very small.
Pressure bearing solar water heater and non pressure type is as follows:The utility model relates to a pressure bearing water heater, which is called a phase change heat conduction type full pressure solar water heater, and a phase change thermal conduction heat collecting tube used in the utility model is composed of a vacuum tube, a phase change heat pipe and a heat transfer aluminum wing. Because the phase change heat pipe is connected with the water tank by screw threads, and the liquid is not in the vacuum tube, the pressure can be controlled. The sun, the selective absorption coating collected by heat transfer to the phase change heat transfer aluminum wing heat pipe, heat pipe in the phase change heat transfer medium, using two phase transition process of heat transfer to the water in the water tank, complete heat exchange. Pressurized water heater in the state of pressure (pressure size and the size of the local pipe network is basically the same size) under the top of the water use, that is, rely on water pressure will be hot water tank out. When used, should ensure that the water valve normally open, and without water. Because the heat pipe and the water tank depends on the threaded connection, so there will be water leakage. But the vacuum tube in the water, it will not be a tube of water out of the possibility of damage, fcl.
