自复叠循环系统中含有N<sub>2</sub>O的混合工质

Mixed working substance containing N*O in auto-cascade circulatory system

Abstract

The invention discloses a mixed working substance containing N2O in an auto-cascade circulatory system. The working substance consists of 15-50% of a first group substance by mass fraction and a second group substance in balancing amount, wherein, the first group substance is N2O or a compound formed by N2O and one or more of ethane, trifluoromethane, hexafluoroethane, fluoromethane, carbon dioxide and ethylene. Compared with the prior working substance used for the auto-cascade circulatory system, the mixed working substance provided by the invention has the following advantages: the mixed working substance provided by the invention can effectively realize the refrigeration of a temperature range of 200-240K; the ozone depletion potential (ODP) of N2O (R744A) equals to zero, and the global warming potential (GWP) thereof is relatively low; and as N2O is a natural substance which can be easily obtained, and other refrigerants matched with N2O are reasonably priced, the use of the mixed refrigerant can reduce the cost for companies.
本发明公开了一种自复叠循环系统中含有N<sub>2</sub>O的混合工质,由质量分数为15~50%的第1组物质和余量的第2组物质组成,其中第1组物质为N<sub>2</sub>O或N<sub>2</sub>O与乙烷、三氟甲烷、六氟乙烷、氟甲烷、二氧化碳、乙烯中一种或多种的混合物。本发明的混合工质与目前自复叠制冷系统使用的工质相比具有以下优点:本发明的混合工质可以有效地实现200~240K温区的制冷,且N<sub>2</sub>O(R744A)臭氧品消耗潜能(ODP)为零,温室效应指数(GWP)较低;N<sub>2</sub>O是天然存在的物质,原料易取,与其相配的其它制冷剂价格也比较合适,所以使用该混合制冷剂可以给企业降低成本。

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    CN-102766438-ANovember 07, 2012中国科学院理化技术研究所一种含三氟碘甲烷的混合制冷剂
    CN-102766438-BNovember 12, 2014中国科学院理化技术研究所一种含三氟碘甲烷的混合制冷剂
    CN-103045173-AApril 17, 2013天津大学含有二氟甲烷(r32)的跨临界动力循环混合工质
    CN-103320095-BJuly 29, 2015马鞍山市博浪热能科技有限公司一种非共沸多元混合制冷剂
    CN-105737427-AJuly 06, 2016西安交通大学一种采用双级气液分离器的一级自复叠低温制冷循环系统