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国外对热能传送介质的选择,认为热水网在大范围供热要比蒸汽网更具优越性,现已成发展方向。对新建供热网通常都用热水网,也有将旧汽网改成热水网;热水网水温一般取用130℃至180℃,并正继续升高温度。在国内,北方地区似有采暖用的低温水网,但迄今130℃或更高者尚无实例,另高温水网集中供热在工业上的应用,更无完整资料和经验可取。
Foreign choice of heat transfer medium that the hot water network in a wide range of steam than the steam network more advantages, has become the development direction. On the new heating network are usually used hot water network, but also the old steam network into a hot water network; hot water network temperature generally take 130 ℃ to 180 ℃, and is continuing to increase the temperature. In China, there is a low-temperature water network for heating in the northern part of the country. However, up to now, there are still no examples of 130 ° C or higher. In addition, industrial applications of centralized heating with high-temperature water networks are more incomplete and less desirable.