Thermodynamic analysis of ejector cooling cycles with heat-driven feed pumping devices
Guangming Chen,
Volodymyr Ierin,
Oleksii Volovyk and
Kostyantyn Shestopalov
Energy, 2019, vol. 186, issue C
Abstract:
The paper presents the results of thermodynamic analysis of ejector cooling cycles with heat pumping devices which supply the working fluid to the vapor generator. Two variants of heat pumping devices are considered in which the feed pump is driven by (1) an expander and a turbine and (2) a turbine. A mathematical model for determining the energy and exergy characteristics of the pumping devices and ejector systems as a whole is proposed. Refrigerant R245ca is selected as an environmentally friendly low-boiling working fluid of the ejector cooling cycles. The paper analyzes the effect of condensing and generating temperatures on the characteristics of ejector cooling cycles for the air conditioning systems. It is shown that the use of the work obtained in the expander and turbine taking into account the irreversibility of the working processes in the pumping devices leads to a slight decrease in the energy efficiency of the proposed systems, and, at the same time, it significantly increases their exergic efficiency.
Keywords: Ejector cooling cycle; Ejector; Feed pump; Expander; Turbine (search for similar items in EconPapers)
Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (3)
Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544219315646
Full text for ScienceDirect subscribers only
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:energy:v:186:y:2019:i:c:s0360544219315646
DOI: 10.1016/j.energy.2019.115892
Access Statistics for this article
Energy is currently edited by Henrik Lund and Mark J. Kaiser
More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().