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Generalized Performance Characteristics of Refrigeration and Heat Pump Systems
Joint Authors
Huleihil, Mahmoud
Andresen, Bjarne
Source
Physics Research International
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-12-29
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
A finite-time generic model to describe the behavior of real refrigeration systems is discussed.
The model accounts for finite heat transfer rates, heat leaks, and friction as different sources of dissipation.
The performance characteristics are cast in terms of cooling rate (r) versus coefficient of performance (w).
For comparison purposes, various types of refrigeration/heat pump systems are considered: the thermoelectric refrigerator, the reverse Brayton cycle, and the reverse Rankine cycle.
Although the dissipation mechanisms are different (e.g., heat leak and Joule heating in the thermoelectric refrigerator, isentropic losses in the reverse Brayton cycle, and limits arising from the equation of state in the reverse Rankine cycle), the r−w characteristic curves have a general loop shape.
There are four limiting types of operation: open circuit in which both r and w vanish in the limit of slow operation; short circuit in which again r and w vanish but in the limit of fast operation; maximum r; maximum w.
The behavior of the considered systems is explained by means of the proposed model.
The derived formulae could be used for a quick estimation of w and the temperatures of the working fluid at the hot and cold sides.
American Psychological Association (APA)
Huleihil, Mahmoud& Andresen, Bjarne. 2010. Generalized Performance Characteristics of Refrigeration and Heat Pump Systems. Physics Research International،Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-464200
Modern Language Association (MLA)
Huleihil, Mahmoud& Andresen, Bjarne. Generalized Performance Characteristics of Refrigeration and Heat Pump Systems. Physics Research International No. 2010 (2010), pp.1-10.
https://search.emarefa.net/detail/BIM-464200
American Medical Association (AMA)
Huleihil, Mahmoud& Andresen, Bjarne. Generalized Performance Characteristics of Refrigeration and Heat Pump Systems. Physics Research International. 2010. Vol. 2010, no. 2010, pp.1-10.
https://search.emarefa.net/detail/BIM-464200
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464200