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author:

Liu, Xi (Liu, Xi.) [1] (Scholars:刘曦) | Fu, Ruansong (Fu, Ruansong.) [2] | Wang, Zhiqiang (Wang, Zhiqiang.) [3] | Lin, Li (Lin, Li.) [4] (Scholars:林立) | Sun, Zhixin (Sun, Zhixin.) [5] (Scholars:孙志新) | Li, Xuelai (Li, Xuelai.) [6] (Scholars:李学来)

Indexed by:

EI Scopus SCIE

Abstract:

In this paper, the new configuration of transcritical CO2 refrigeration cycle combined with a thermoelectric subcooler and an ejector (TES + EJE) is proposed. The thermoelectric subcooler is installed after the gas cooler in the transcritical CO2 refrigeration cycle with an ejector. Comparisons are carried out with the conventional transcritical CO2 refrigeration cycle (BASE), CO2 cycle with a thermoelectric subcooler (TES) and CO2 cycle with an ejector (EJE). Maximum cooling coefficient of performance (COPc) is obtained for the new TES + EJE cycle with a simultaneous optimization of subcooling temperature and discharge pressure. The improved new cycle exhibits higher COPc and lower discharge pressure compared with the other three cycles. Compared with the BASE cycle, the maximum COPc of the TES + EJE cycle is increased by 39.34% and the corresponding optimum discharge pressure is reduced by 8.01% under given operation conditions of 5 degrees C evaporation temperature and 40 degrees C gas cooler outlet temperature. The effects of the subcooling temperature, discharge pressure, gas cooler outlet temperature and evaporation temperature on the TES + EJE system performance are also discussed by energy and exergy analysis and results present here.

Keyword:

Carbon dioxide Cooling coefficient of performance Ejector Exergy loss rate Thermoelectric subcooler Transcritical refrigeration cycle

Community:

  • [ 1 ] [Liu, Xi]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Fu, Ruansong]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Lin, Li]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Sun, Zhixin]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Li, Xuelai]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 6 ] [Liu, Xi]Fujian Snowman Co Ltd, Fuzhou 350200, Fujian, Peoples R China
  • [ 7 ] [Wang, Zhiqiang]Fujian Snowman Co Ltd, Fuzhou 350200, Fujian, Peoples R China

Reprint 's Address:

  • 李学来

    [Li, Xuelai]Fuzhou Univ, Coll Chem Engn, Fuzhou 350116, Fujian, Peoples R China

Email:

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Source :

ENERGY CONVERSION AND MANAGEMENT

ISSN: 0196-8904

Year: 2019

Volume: 188

Page: 354-365

8 . 2 0 8

JCR@2019

9 . 9 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:150

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 55

SCOPUS Cited Count: 62

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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