Experimental test on the performance of a −80 °C cascade refrigeration unit using refrigerants R290-R170 for COVID-19 vaccines storage
(2023) In Journal of Building Engineering 63.- Abstract
With the urgent demand for ultralow-temperature refrigerators worldwide, the operation reliability and stability of the refrigeration system becomes greatly crucial. In this study, a -80 oC ultralow-temperature cascade refrigeration system (CRS) is developed. From aspects of global warming potential (GWP) and ozone depletion potential (ODP), the environmentally friendly refrigerants R290 and R170 are utilized in the high-temperature cycle and low-temperature cycle of CRS. The experimental measurement is conducted in a Type-laboratory with a dry bulb temperature of 25.0 °C and a wet bulb temperature of 20.2 °C. The pull-down and stable operation performance of the CRS freezer are experimentally investigated. Both the inlet and... (More)
With the urgent demand for ultralow-temperature refrigerators worldwide, the operation reliability and stability of the refrigeration system becomes greatly crucial. In this study, a -80 oC ultralow-temperature cascade refrigeration system (CRS) is developed. From aspects of global warming potential (GWP) and ozone depletion potential (ODP), the environmentally friendly refrigerants R290 and R170 are utilized in the high-temperature cycle and low-temperature cycle of CRS. The experimental measurement is conducted in a Type-laboratory with a dry bulb temperature of 25.0 °C and a wet bulb temperature of 20.2 °C. The pull-down and stable operation performance of the CRS freezer are experimentally investigated. Both the inlet and outlet temperature and pressure of two compressors are monitored, and the operation characteristic of the CRS is analyzed. With some temperature test points arranged in the freezer, the temperature drop and temperature fluctuation variation of air are assessed. The operation power consumption of the CRS is also measured during the whole process. It shows that the −80 °C temperature can be generated and realized by the developed ultralow-temperature freezer.
(Less)
- author
- Liu, Zhan LU ; Bai, Minkai ; Tan, Haihui ; Ling, Yunzhi and Cao, Zhen LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- -80 °C ultralow-temperature, Cascade refrigeration system, COVID-19 vaccines storage, Refrigerant pair R290-R170
- in
- Journal of Building Engineering
- volume
- 63
- article number
- 105537
- publisher
- Elsevier
- external identifiers
-
- scopus:85142149650
- ISSN
- 2352-7102
- DOI
- 10.1016/j.jobe.2022.105537
- language
- English
- LU publication?
- yes
- id
- 881a6bf2-78b7-4228-9ffd-b239e947cefd
- date added to LUP
- 2023-02-09 13:58:05
- date last changed
- 2023-11-19 00:05:35
@article{881a6bf2-78b7-4228-9ffd-b239e947cefd,
abstract = {{<p>With the urgent demand for ultralow-temperature refrigerators worldwide, the operation reliability and stability of the refrigeration system becomes greatly crucial. In this study, a -80 <sup>o</sup>C ultralow-temperature cascade refrigeration system (CRS) is developed. From aspects of global warming potential (GWP) and ozone depletion potential (ODP), the environmentally friendly refrigerants R290 and R170 are utilized in the high-temperature cycle and low-temperature cycle of CRS. The experimental measurement is conducted in a Type-laboratory with a dry bulb temperature of 25.0 °C and a wet bulb temperature of 20.2 °C. The pull-down and stable operation performance of the CRS freezer are experimentally investigated. Both the inlet and outlet temperature and pressure of two compressors are monitored, and the operation characteristic of the CRS is analyzed. With some temperature test points arranged in the freezer, the temperature drop and temperature fluctuation variation of air are assessed. The operation power consumption of the CRS is also measured during the whole process. It shows that the −80 °C temperature can be generated and realized by the developed ultralow-temperature freezer.</p>}},
author = {{Liu, Zhan and Bai, Minkai and Tan, Haihui and Ling, Yunzhi and Cao, Zhen}},
issn = {{2352-7102}},
keywords = {{-80 °C ultralow-temperature; Cascade refrigeration system; COVID-19 vaccines storage; Refrigerant pair R290-R170}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Journal of Building Engineering}},
title = {{Experimental test on the performance of a −80 °C cascade refrigeration unit using refrigerants R290-R170 for COVID-19 vaccines storage}},
url = {{http://dx.doi.org/10.1016/j.jobe.2022.105537}},
doi = {{10.1016/j.jobe.2022.105537}},
volume = {{63}},
year = {{2023}},
}