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thermostatic valve factory is introduced at present, the mostly adopt central heating water system, because the number of water, peak time scale with hot water. To avoid the waste of water resources, the majority of colleges and universities public bath using the IC card billing system metering management mode, to realize saving water. To achieve the unity of the charge, hot water must guarantee the constant temperature, as a result, public bath is using constant temperature water supply system in colleges and universities. However, water flow, unstable performance of the water-supply system, and the temperature gradient changed, reason often are often faced with the water temperature is not stable, high low problem. In order to solve this problem, in the small diameter of water side, usually adopts mechanical thermostatic valve regulating water, concrete is set in the middle of the cold and hot water pipe water mixers to solve the problem of the water temperature is not stable, in use is often need to manually adjust the water mixers for many times, not only there is the inconvenience of use, and repeated adjustment over adjust scalding accidents occurred easily in the process; But mechanical thermostatic valve is not suitable for big diameter pipe in hot water engineering, the water supply system of large caliber pipe temperature out ShuiNan problem. To solve the above problems, this paper introduces several kinds of colleges and universities public bathroom constant temperature water supply system, and a comparative analysis of several feasible schemes.1 thermostatic system design at present, the constant temperature water supply system mainly through constant temperature regulator to implement. Thermostatic valve with mechanical thermostatic valve and electronic thermostatic valve adjustment. Whatever the thermostatic valve, the principle of cold water and hot water mix, reaches a certain temperature of hot water. Because of the large diameter water supply system, water supply per unit time is large, all need a certain amount of time. In order to make the hot and cold water mixing, the system by setting the buffer device to realize constant temperature water supply system. Two feasible thermostatic system design scheme 1. More solenoid valve adjustment method according to the temperature of the buffer tank, to control one or more of the hot and cold water electromagnetic valve opening and closing at the same time. To set the temperature adjustment. 2. Multiple constant mix water valve regulating method using multiple thermostatic valve automatic adjustment, to realize the water supply system of constant temperature. 3. Intelligent electric constant temperature water mixers constant temperature adjustment according to the temperature of the buffer tank, control valves to regulate the electric constant temperature control the opening of the hot and cold water to mix water at constant temperature effect. 4. Thermostatic valve + thermostatic radiator thermostatic water hot and cold water through the thermostatic valve into the constant temperature water tank, first by constant temperature water tank to supply again each point temperature water with hot water. 3 constant temperature water supply scheme comparison and analysis through the above comparative analysis, the thermostatic valve + thermostatic radiator thermostatic water supply project in colleges and universities public bathroom hot water in constant temperature water supply system stability is relatively good, won't appear the phenomenon of hot and cold. And can meet the demand of the bathroom water peak time of large-scale water. Therefore, colleges and universities public bathroom constant temperature water supply system appropriate USES thermostatic valve + constant temperature water tank thermostatic water supply scheme. And, in the end of the water use use with IC card intelligent water control in energy saving, water saving, fair and the intended use of the water. Please attention to xiao-feng li WeChat public platform. 4 conclusion at present, thermostatic valve + thermostatic radiator thermostatic water supply scheme has been applied in China people's university student apartment and other schools, and running well, thoroughly overcome the existing constant temperature water supply system of large-scale water, hot and cold, constant temperature hot water shortage, a problem of ShuiNan.
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