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Autocascade refrigeration system: Experimental results in achieving ultra low temperature
Author(s) -
Aprea C.,
Maiorino A.
Publication year - 2009
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.1492
Subject(s) - refrigerant , refrigeration , thermodynamics , process engineering , nuclear engineering , chemistry , methane , mechanical engineering , environmental science , engineering , physics , organic chemistry , heat exchanger
In this paper the experimental results of an autocascade refrigeration system for achieving ultra low temperature are presented. The plant is used to preserve tissue and cells. When the air temperature is equal to −150°C in 0.25 m 3 space, the required refrigeration power is about 250 W. The influence of the most meaningful variables is discussed with regard to the design of the plant. The experimental results show an acceptable time to reach the steady state in dependence of the finality of the plant. The working substance is a non‐azeotropic mixture consisting of hydrofluorocarbon (HFC) refrigerants in addition to argon and methane. Copyright © 2009 John Wiley & Sons, Ltd.