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蒸汽作为载能工质,在工业企业以及社会能源消费中占有很大比重,由于我国没有蒸汽物性值(密度、黏度、等熵指数等)计算方法的标准,致使在蒸汽计量中物性值取值方法不统一,给水蒸气的质量计量和贸易结算造成诸多困难。另外,用户使用的是水蒸气所携带的热量,而温度、压力不同,蒸汽比焓不同,所以用质量流量来评估蒸汽用量或损耗显然存在缺陷。制定《蒸汽热量计算方法》的国家标准是解决上述问题的重要环节。为此,国家标准化委员
As a carrier energy, steam occupies a large proportion of industrial enterprises and social energy consumption. Since China does not have the standard of calculation method of vapor physical properties (density, viscosity, isentropic index, etc.), the value of physical property in steam metering The method is not uniform, causing many difficulties for the quality measurement of water vapor and trade settlement. In addition, the user uses the heat carried by the steam, and the temperature and pressure are different, the specific enthalpy of the steam is different, so there is a clear flaw in the mass flow to evaluate the steam consumption or loss. The development of “steam calorie calculation method,” the national standard is an important part of solving the above problems. To this end, national standardization committee