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Such vacuum phase transition boiler mostly imported burner, combustion efficiency, low noise and exhaust emissions. Internal exchanger made of stainless steel, in this regard to ensure high heat transfer efficiency, on the other hand can ensure a clean water quality. At the same time, its smoke tube interior spiral spoiler, in order to improve heat transfer efficiency, and lower operating costs. Further, it is the overall use of square configuration, the boiler and the heat exchanger is a one-piece design, so that a small volume of its structure compact shape the United States.
In the design of vacuum hot water boiler, the problem should be noted that the heat medium water vacuum hot water boiler, the negative pressure conditions at the maximum temperature is about 93 deg.] C, the maximum temperature of the boiler water at about 80 ℃, the water temperature and therefore require more when high, the water temperature should be used in other types of high boiler; 2) vacuum hot water boiler heat exchanger tube diameter is small, generally about 10 ~, while not fouling the inner pipe, to prevent impurities clogging the tube system , other sources should be installed or filter before the boiler return pipe inlet; 3) vacuum hot water boiler design, according to the system pressure, the pressure parameter determining unit, to ensure that the working pressure of the pressure unit to meet the system requirements. Pressure relief valve is provided at the interface of the vacuum hot water boiler system should be designed in which the unit set pressure must be less than the maximum allowable pressure, the pressure relief valve unit and the valve shall be fitted to the connecting portion based on such a design configuration of the vacuum hot water boiler , as compared with the vacuum hot water boiler pressure hot water boiler, has its own unique advantages, table 1 Comparative characteristic of both systems were schemes.
(1) the internal environment of electrically heated vacuum phase change boiler is vacuum state when it is operated by electric heating vacuum phase change boiler. In this case, the oxygen in the intermediate water will be discharged to the outside of the electro-thermal vacuum phase change boiler, so the oxidation corrosion will not be caused in the boiler and the equipment will be damaged. At the same time, the heat exchanger part of electro-thermal vacuum hot water boiler is made of stainless steel and will not be corroded. In addition, the electro-thermal vacuum hot water boiler only needs to add a small amount of heat medium water at one time, it will not increase or decrease during operation, so there will not be scaling in the interior.Free Chat
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