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Prototype of hybrid refrigeration system using refrigerant R723

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Lynchos, George and Tamainot-Telto, Zacharie (2018) Prototype of hybrid refrigeration system using refrigerant R723. Applied Thermal Engineering, 134 . pp. 95-106. doi:10.1016/j.applthermaleng.2017.12.103

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Official URL: https://doi.org/10.1016/j.applthermaleng.2017.12.1...

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Abstract

A proof of concept 10 kW cooling capacity hybrid refrigeration machine, designed and built at University of Warwick, is described in this paper. The hybrid system uses ammonia mixture R723 (40% Dimethyl ether, 60% Ammonia) which is compatible with conventional refrigeration copper alloy (Cu90Ni10) and environmentally friendly. It combines sorption (thermal) and conventional vapour compression (electrical) technology in two separate refrigerant loops. Shell and tubes adsorption generators with activated carbon – R723 pair are used as thermal compressor while a semi hermetic reciprocating compressor is used in the conventional vapour compression loop. The hybrid machine is designed as water chiller with an evaporation temperature of 5 oC and condensing temperature of 40oC. The preliminary experimental tests are mainly designed to check the system operational functionality. Those preliminary results show a maximum cooling production of 6 kW with 2/3 from mechanical compression and 1/3 from thermal compression (adsorption cycle). Further additional work is yet to be carried in order to establish full and detailed performance of prototype under development.

Item Type: Journal Article
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Refrigeration and refrigerating machinery, Refrigerators -- Design and construction
Journal or Publication Title: Applied Thermal Engineering
Publisher: Pergamon
ISSN: 1359-4311
Official Date: 1 April 2018
Dates:
DateEvent
1 April 2018Published
31 January 2018Available
26 December 2017Accepted
31 December 2017Modified
9 June 2016Submitted
Volume: 134
Page Range: pp. 95-106
DOI: 10.1016/j.applthermaleng.2017.12.103
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/J000876/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
UNSPECIFIEDChemviron Carbons Ltd (Firm)UNSPECIFIED

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