Performance enhancement of ejector-absorption cooling cycle by re-arrangement of solution streamlines and adding RHE

Azher M. Abed, M. A. Alghoul, R. Sirawn, Ali Najah Al-Shamani, Kamaruzzaman Sopian

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Performance of ejector-flash tank-absorption cooling system working with NH3/H2O is still subject for further enhancement. The aim of this study is to optimize the utilization of the internal heat recovery of the system. Two modifications are considered, namely, a new arrangement of solution streamlines between the absorber and generator and adding a refrigerant heat exchanger (RHE) between the condenser and evaporator. Energy balance analysis is performed to compare the COP enhancement of the proposed cycle before and after modification. The COP of the proposed cycle after modification showed a significant COP enhancement about 12.2%. The COP increment with the new arrangement of the solution streamlines and adding RHE are 8% and 4.2% respectively. The results show that the cooling capacity increment of the proposed cycle with added RHE is 4.85%. Moreover, the results showed that the proposed cycle significantly reduced the generator thermal load and increased slightly the evaporator thermal load (i.e., cooling effect) compare to the cycle before modification.

Original languageEnglish
Pages (from-to)65-75
Number of pages11
JournalApplied Thermal Engineering
Volume77
DOIs
Publication statusPublished - 25 Feb 2015

Fingerprint

Absorption cooling
Refrigerants
Heat exchangers
Evaporators
Thermal load
Cooling
Condensers (liquefiers)
Waste heat utilization
Energy balance
Cooling systems

Keywords

  • Adding
  • COP enhancement
  • Ejector-flash tank-absorption cooling cycle
  • Energy balance analysis
  • NH/HO
  • Re-arrangement of solution streamlines
  • RHE

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Cite this

Performance enhancement of ejector-absorption cooling cycle by re-arrangement of solution streamlines and adding RHE. / Abed, Azher M.; Alghoul, M. A.; Sirawn, R.; Al-Shamani, Ali Najah; Sopian, Kamaruzzaman.

In: Applied Thermal Engineering, Vol. 77, 25.02.2015, p. 65-75.

Research output: Contribution to journalArticle

@article{1c2d725cb2d84ed3966338ccb05af995,
title = "Performance enhancement of ejector-absorption cooling cycle by re-arrangement of solution streamlines and adding RHE",
abstract = "Performance of ejector-flash tank-absorption cooling system working with NH3/H2O is still subject for further enhancement. The aim of this study is to optimize the utilization of the internal heat recovery of the system. Two modifications are considered, namely, a new arrangement of solution streamlines between the absorber and generator and adding a refrigerant heat exchanger (RHE) between the condenser and evaporator. Energy balance analysis is performed to compare the COP enhancement of the proposed cycle before and after modification. The COP of the proposed cycle after modification showed a significant COP enhancement about 12.2{\%}. The COP increment with the new arrangement of the solution streamlines and adding RHE are 8{\%} and 4.2{\%} respectively. The results show that the cooling capacity increment of the proposed cycle with added RHE is 4.85{\%}. Moreover, the results showed that the proposed cycle significantly reduced the generator thermal load and increased slightly the evaporator thermal load (i.e., cooling effect) compare to the cycle before modification.",
keywords = "Adding, COP enhancement, Ejector-flash tank-absorption cooling cycle, Energy balance analysis, NH/HO, Re-arrangement of solution streamlines, RHE",
author = "Abed, {Azher M.} and Alghoul, {M. A.} and R. Sirawn and Al-Shamani, {Ali Najah} and Kamaruzzaman Sopian",
year = "2015",
month = "2",
day = "25",
doi = "10.1016/j.applthermaleng.2014.12.003",
language = "English",
volume = "77",
pages = "65--75",
journal = "Applied Thermal Engineering",
issn = "1359-4311",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Performance enhancement of ejector-absorption cooling cycle by re-arrangement of solution streamlines and adding RHE

AU - Abed, Azher M.

AU - Alghoul, M. A.

AU - Sirawn, R.

AU - Al-Shamani, Ali Najah

AU - Sopian, Kamaruzzaman

PY - 2015/2/25

Y1 - 2015/2/25

N2 - Performance of ejector-flash tank-absorption cooling system working with NH3/H2O is still subject for further enhancement. The aim of this study is to optimize the utilization of the internal heat recovery of the system. Two modifications are considered, namely, a new arrangement of solution streamlines between the absorber and generator and adding a refrigerant heat exchanger (RHE) between the condenser and evaporator. Energy balance analysis is performed to compare the COP enhancement of the proposed cycle before and after modification. The COP of the proposed cycle after modification showed a significant COP enhancement about 12.2%. The COP increment with the new arrangement of the solution streamlines and adding RHE are 8% and 4.2% respectively. The results show that the cooling capacity increment of the proposed cycle with added RHE is 4.85%. Moreover, the results showed that the proposed cycle significantly reduced the generator thermal load and increased slightly the evaporator thermal load (i.e., cooling effect) compare to the cycle before modification.

AB - Performance of ejector-flash tank-absorption cooling system working with NH3/H2O is still subject for further enhancement. The aim of this study is to optimize the utilization of the internal heat recovery of the system. Two modifications are considered, namely, a new arrangement of solution streamlines between the absorber and generator and adding a refrigerant heat exchanger (RHE) between the condenser and evaporator. Energy balance analysis is performed to compare the COP enhancement of the proposed cycle before and after modification. The COP of the proposed cycle after modification showed a significant COP enhancement about 12.2%. The COP increment with the new arrangement of the solution streamlines and adding RHE are 8% and 4.2% respectively. The results show that the cooling capacity increment of the proposed cycle with added RHE is 4.85%. Moreover, the results showed that the proposed cycle significantly reduced the generator thermal load and increased slightly the evaporator thermal load (i.e., cooling effect) compare to the cycle before modification.

KW - Adding

KW - COP enhancement

KW - Ejector-flash tank-absorption cooling cycle

KW - Energy balance analysis

KW - NH/HO

KW - Re-arrangement of solution streamlines

KW - RHE

UR - http://www.scopus.com/inward/record.url?scp=84919935585&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919935585&partnerID=8YFLogxK

U2 - 10.1016/j.applthermaleng.2014.12.003

DO - 10.1016/j.applthermaleng.2014.12.003

M3 - Article

VL - 77

SP - 65

EP - 75

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

ER -