Open AccessIncreasing the heat dissipation of an evaporator in the refrigeration system
Author(s) -
I. A. Sazhin
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1675/1/012034
Subject(s) - evaporator , refrigeration , refrigerant , thermodynamics , heat transfer , nusselt number , heat transfer coefficient , thermal expansion valve , materials science , mechanics , chemistry , heat exchanger , physics , reynolds number , turbulence
The article considers the possibility of increasing the heat transfer of the evaporator of the refrigeration unit. The methods of Kutateladze-Sorokin, Baker, Baggs and Brill are used to diagnose the flow regimes of R-22, R-134a, R-600a refrigerants at gas contents from 0.7 to 0.95. The values of the Nusselt criterion, the heat transfer coefficient in the selected sections of the evaporator pipe are calculated. The results are consistent with known data. An example of changing the thickness of a liquid film of a refrigerant is considered to increase the heat transfer of the evaporator of a refrigeration unit.