Performance degradation of a vapor compression refrigeration system under fouled conditions

Bilal Ahmed Qureshi; Syed M. Zubair

doi:10.1016/j.ijrefrig.2011.02.012

Performance degradation of a vapor compression refrigeration system under fouled conditions

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32 Scopus citations

Abstract

Performance degradation due to fouling in a vapor compression cycle is investigated for various applications. Considering the first set of refrigerants i.e. R134a, R410A and R407C, from a first law standpoint, the COP indicates that R134a always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R134a performs the best in all cases. Considering the second set of refrigerants i.e. R717, R404A and R290, from a first law standpoint, the COP indicates that R717 always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R717 performs the best in all cases. Volumetric efficiency of R410A and R717 remained the highest under the respective conditions studied. Furthermore, performance degradation of the evaporator often has a larger effect on compressor power requirement while that of the condenser has an overall larger effect on the COP. A new performance degradation law is presented in light of the data generated, which can reduce the amount of experimentation and help predict relevant quantities of the refrigeration system.

Original language	English
Pages (from-to)	1016-1027
Number of pages	12
Journal	International Journal of Refrigeration
Volume	34
Issue number	4
DOIs	https://doi.org/10.1016/j.ijrefrig.2011.02.012
State	Published - Jun 2011

Bibliographical note

Funding Information:
The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through project # NSTIP-08-ENE50-4 as part of the National Science, Technology and Innovation Plan.

Keywords

Degradation
Fouling
Performance
R134a
R290
R404A
R407C
R410A
R717
Refrigeration
Vapour compression

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

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10.1016/j.ijrefrig.2011.02.012

Cite this

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title = "Performance degradation of a vapor compression refrigeration system under fouled conditions",

abstract = "Performance degradation due to fouling in a vapor compression cycle is investigated for various applications. Considering the first set of refrigerants i.e. R134a, R410A and R407C, from a first law standpoint, the COP indicates that R134a always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R134a performs the best in all cases. Considering the second set of refrigerants i.e. R717, R404A and R290, from a first law standpoint, the COP indicates that R717 always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R717 performs the best in all cases. Volumetric efficiency of R410A and R717 remained the highest under the respective conditions studied. Furthermore, performance degradation of the evaporator often has a larger effect on compressor power requirement while that of the condenser has an overall larger effect on the COP. A new performance degradation law is presented in light of the data generated, which can reduce the amount of experimentation and help predict relevant quantities of the refrigeration system.",

keywords = "Degradation, Fouling, Performance, R134a, R290, R404A, R407C, R410A, R717, Refrigeration, Vapour compression",

author = "Qureshi, \{Bilal Ahmed\} and Zubair, \{Syed M.\}",

note = "Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science \& Technology Unit at King Fahd University of Petroleum \& Minerals (KFUPM) for funding this work through project \# NSTIP-08-ENE50-4 as part of the National Science, Technology and Innovation Plan. ",

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AU - Qureshi, Bilal Ahmed

AU - Zubair, Syed M.

N1 - Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through project # NSTIP-08-ENE50-4 as part of the National Science, Technology and Innovation Plan.

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N2 - Performance degradation due to fouling in a vapor compression cycle is investigated for various applications. Considering the first set of refrigerants i.e. R134a, R410A and R407C, from a first law standpoint, the COP indicates that R134a always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R134a performs the best in all cases. Considering the second set of refrigerants i.e. R717, R404A and R290, from a first law standpoint, the COP indicates that R717 always performs better unless only the evaporator is being fouled. In contrast to this, from a second-law standpoint, the second-law efficiency indicates that R717 performs the best in all cases. Volumetric efficiency of R410A and R717 remained the highest under the respective conditions studied. Furthermore, performance degradation of the evaporator often has a larger effect on compressor power requirement while that of the condenser has an overall larger effect on the COP. A new performance degradation law is presented in light of the data generated, which can reduce the amount of experimentation and help predict relevant quantities of the refrigeration system.

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KW - Vapour compression

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Performance degradation of a vapor compression refrigeration system under fouled conditions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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