New Refrigerant Developments For Very Low Temperature Refrigeration

被引：0

作者：

Low, Robert ^{[1
]}

Seeton, Christopher J. ^{[2
]}

机构：

[1] Koura Global, Runcorn WA7 4QX, England

[2] Koura Global, Waltham, MA USA

来源：

7TH IIR 2022 INTERNATIONAL CONFERENCE ON SUSTAINABILITY AND THE COLD CHAIN 2022 | 2022年

关键词：

Refrigeration; Carbon Dioxide; System Testing; COP; GWP;

D O I：

10.18462/iir.iccc2022.1138

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Very Low Temperature cascade refrigeration is of increasing importance in ensuring a suitable cold chain for high value materials such as vaccines or premium seafood. Koura is developing new refrigerant options for system designers including R-473A. This refrigerant was designed as a non-flammable "near drop-in" alternative to R-23 or R-508B, with Global Warming Potential (GWP) below 2000. It contains 60% of R-744 but can operate well below that refrigerant's triple point. This paper presents information on R-473A in use including: performance testing, oil and materials compatibility studies and analysis of its effective temperature range. Options will be discussed for further reduction in GWP to enable non-flammable refrigerants or weakly flammable refrigerants capable of operating at -90 degrees C evaporator conditions.

引用

页码：282 / 288

页数：7

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