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Ranking of Refrigerants

机译:制冷剂等级

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摘要

Environmental ranking of refrigerants is of need in many instances. The aim is to assess the relative environmental hazard posed by 40 refrigerants, including those used in the past, those presently used, and some proposed substitutes. Ranking is based upon ozone depletion potential, global warming potential, and atmospheric lifetime and is achieved by applying the Hasse diagram technique, a mathematical method that allows us to assess order relationships of chemicals. The refrigerants are divided into 13 classes, of which the chlorofluorocarbons, hydrofluorocarbons, hydrochlorofluorocar-bons, hydrofluoroethers, and hydrocarbons contain the largest number of single substances. The dominance degree, a method for measuring order relationships among classes, is discussed and applied to the 13 refrigerant classes. The results show that some hydrofluoroethers are as problematic as the hydrofluorocarbons. Hydrocarbons and ammonia are the least problematic refrigerants with respect to the three environmental properties.
机译:在许多情况下,需要对制冷剂进行环境分级。目的是评估40种制冷剂带来的相对环境危害,包括过去使用的制冷剂,目前使用的制冷剂以及一些拟议的替代品。排名基于臭氧消耗潜能,全球变暖潜能和大气寿命,并且是通过应用Hasse图技术实现的,Hasse图技术是一种数学方法,可让我们评估化学品的顺序关系。制冷剂分为13类,其中氯氟烃,氢氟烃,氢氯氟碳,氢氟醚和碳氢化合物包含最多的单一物质。讨论了主导度,一种用于测量类别之间的顺序关系的方法,并将其应用于13种制冷剂类别。结果表明,某些氢氟醚与氢氟烃一样有问题。就这三种环境特性而言,碳氢化合物和氨是问题最少的制冷剂。

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