The performance of finite-time refrigerators with Rankine cycles

Jian Guo and Fangming Jiang

Physica A: Statistical Mechanics and its Applications, 2019, vol. 536, issue C

Abstract: The optimum coefficient of performance (COP) of finite-time refrigerators operating with Rankine cycles for different refrigerants (R410A, R134a, R22 and R32) are investigated. The maximum COP is found to be dependent on the thermal reservoir temperatures and the mass flow weighted total heat conductance as well as the refrigerant properties. The optimal heat conductance ratio, which leads to the optimum COP, is found to be less than 0.5 and dependent on the mass flow weighted total conductance and hot reservoir temperatures for each refrigerant. The slightly asymmetric design of smaller thermal conductance for condenser and larger thermal conductance for evaporator is suggested for practical refrigerators. Besides, the curve slope of the saturated gas line of refrigerant is found to significantly impact on COP. The value of optimum COP decreases in sequence of R134a, R22, R410A and R32 in accordance with the orders of the curve slopes of these refrigerants. The performance of refrigerators can be improved by employing the refrigerant with larger steepness of saturated gas line.

Keywords: Refrigerator; Infinite-time; Efficiency; Rankine cycle (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437119314487
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:536:y:2019:i:c:s0378437119314487

DOI: 10.1016/j.physa.2019.122529

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().