EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER

W. WU; X.L. ZHAGN; X.T. LI; W.X. SHI; B.L. WANG

EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER

W. WU, X.L. ZHAGN, X.T. LI, W.X. SHI, B.L. WANG

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

The energy consumption for heating and domestic hot water in China is very huge. Air source absorption heat pump, which makes use of the low-grade heat stored in ambient air, can improve the system energy efficiency obviously. There is little research about exergy analysis on air source absorption heat pump (ASAHP), which is to be studied in this paper. The single-stage air source absorption heat pump using H₂O-LiBr as working pair is designed and simulated based on the balance equations of mass, energy and exergy. Then the exergy destruction in each component of the heat pump is calculated and the exergetic efficiency (ECOP) of ASAHP is obtained. Results show that the components should be improved in the following order according to the exergy destruction ratio: absorber (30%), generator (24%), evaporator (18%), condenser (14%) and solution heat exchanger (14%). The air source type is the main factor that leads to the low ECOP of evaporator. There is great improvement potential at high driving and air temperatures, so is low temperature hot water application. The results of exergy analysis can provide suggestions about potential thermodynamic performance improvements, and be guidance for the optimal design of air source absorption heat pump.

Original language	English
Title of host publication	6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012)
Publisher	Chinese Association of Refrigeration (CAR)
Pages	405-412
ISBN (Print)	9781632660152
Publication status	Published - Aug 2012
Externally published	Yes
Event	6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012) - Xi'an, China Duration: 26 Aug 2012 → 28 Aug 2012

Publication series

Name	Asian Conference on Refrigeration and Air Conditioning (ACRA)

Conference

Conference	6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012)
Abbreviated title	ACRA 2012
Place	China
City	Xi'an
Period	26/08/12 → 28/08/12

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

exergy analysis
absorption heat pump
air source

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@inproceedings{b1cd48de70db4530b1e324a28d0e130f,

title = "EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER",

abstract = "The energy consumption for heating and domestic hot water in China is very huge. Air source absorption heat pump, which makes use of the low-grade heat stored in ambient air, can improve the system energy efficiency obviously. There is little research about exergy analysis on air source absorption heat pump (ASAHP), which is to be studied in this paper. The single-stage air source absorption heat pump using H2O-LiBr as working pair is designed and simulated based on the balance equations of mass, energy and exergy. Then the exergy destruction in each component of the heat pump is calculated and the exergetic efficiency (ECOP) of ASAHP is obtained. Results show that the components should be improved in the following order according to the exergy destruction ratio: absorber (30%), generator (24%), evaporator (18%), condenser (14%) and solution heat exchanger (14%). The air source type is the main factor that leads to the low ECOP of evaporator. There is great improvement potential at high driving and air temperatures, so is low temperature hot water application. The results of exergy analysis can provide suggestions about potential thermodynamic performance improvements, and be guidance for the optimal design of air source absorption heat pump.",

keywords = "exergy analysis, absorption heat pump, air source",

author = "W. WU and X.L. ZHAGN and X.T. LI and W.X. SHI and B.L. WANG",

year = "2012",

month = aug,

language = "English",

isbn = "9781632660152",

series = "Asian Conference on Refrigeration and Air Conditioning (ACRA)",

publisher = "Chinese Association of Refrigeration (CAR)",

pages = "405--412",

booktitle = "6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012)",

note = "6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012), ACRA 2012 ; Conference date: 26-08-2012 Through 28-08-2012",

}

WU, W, ZHAGN, XL, LI, XT, SHI, WX & WANG, BL 2012, EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER. in 6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012). Asian Conference on Refrigeration and Air Conditioning (ACRA), Chinese Association of Refrigeration (CAR), pp. 405-412, 6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012), Xi'an, China, 26/08/12.

EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER. / WU, W.; ZHAGN, X.L.; LI, X.T. et al.
6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012). Chinese Association of Refrigeration (CAR), 2012. p. 405-412 (Asian Conference on Refrigeration and Air Conditioning (ACRA)).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER

AU - WU, W.

AU - ZHAGN, X.L.

AU - LI, X.T.

AU - SHI, W.X.

AU - WANG, B.L.

PY - 2012/8

Y1 - 2012/8

N2 - The energy consumption for heating and domestic hot water in China is very huge. Air source absorption heat pump, which makes use of the low-grade heat stored in ambient air, can improve the system energy efficiency obviously. There is little research about exergy analysis on air source absorption heat pump (ASAHP), which is to be studied in this paper. The single-stage air source absorption heat pump using H2O-LiBr as working pair is designed and simulated based on the balance equations of mass, energy and exergy. Then the exergy destruction in each component of the heat pump is calculated and the exergetic efficiency (ECOP) of ASAHP is obtained. Results show that the components should be improved in the following order according to the exergy destruction ratio: absorber (30%), generator (24%), evaporator (18%), condenser (14%) and solution heat exchanger (14%). The air source type is the main factor that leads to the low ECOP of evaporator. There is great improvement potential at high driving and air temperatures, so is low temperature hot water application. The results of exergy analysis can provide suggestions about potential thermodynamic performance improvements, and be guidance for the optimal design of air source absorption heat pump.

AB - The energy consumption for heating and domestic hot water in China is very huge. Air source absorption heat pump, which makes use of the low-grade heat stored in ambient air, can improve the system energy efficiency obviously. There is little research about exergy analysis on air source absorption heat pump (ASAHP), which is to be studied in this paper. The single-stage air source absorption heat pump using H2O-LiBr as working pair is designed and simulated based on the balance equations of mass, energy and exergy. Then the exergy destruction in each component of the heat pump is calculated and the exergetic efficiency (ECOP) of ASAHP is obtained. Results show that the components should be improved in the following order according to the exergy destruction ratio: absorber (30%), generator (24%), evaporator (18%), condenser (14%) and solution heat exchanger (14%). The air source type is the main factor that leads to the low ECOP of evaporator. There is great improvement potential at high driving and air temperatures, so is low temperature hot water application. The results of exergy analysis can provide suggestions about potential thermodynamic performance improvements, and be guidance for the optimal design of air source absorption heat pump.

KW - exergy analysis

KW - absorption heat pump

KW - air source

UR - http://www.scopus.com/inward/record.url?scp=84903273915&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84903273915&origin=recordpage

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781632660152

T3 - Asian Conference on Refrigeration and Air Conditioning (ACRA)

SP - 405

EP - 412

BT - 6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012)

PB - Chinese Association of Refrigeration (CAR)

T2 - 6th Asian Conference on Refrigeration and Air Conditioning (ACRA 2012)

Y2 - 26 August 2012 through 28 August 2012

ER -

EXERGY ANALYSIS OF AIR SOURCE ABSORPTION HEAT PUMP USED FOR HEATING AND DOMESTIC HOT WATER

Abstract

Publication series

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UN SDGs

Research Keywords

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