Performance analysis of advanced hybrid GAX cycles: HGAX

Yong Tae Kang; Hiki Hong; Kyoung Suk Park

doi:10.1016/j.ijrefrig.2003.10.007

Performance analysis of advanced hybrid GAX cycles: HGAX

Yong Tae Kang, Hiki Hong, Kyoung Suk Park

Research output: Contribution to journal › Article › peer-review

68 Citations (Scopus)

Abstract

The objectives of this paper are to develop advanced hybrid GAX cycles (HGAX) using NH₃-H₂O by combining absorption and vapor compression cycles, and to perform parametric analysis of system pressures and component sizes for performance enhancement. Four different HGAX cycles are developed - Type A (Performance improvement), Type B (Low temperature applications) Type C (Reduction of desorption temperature) and Type D (Hot water temperature applications). A compressor is placed between the evaporator and the absorber in Type A and Type B, and placed between the desorber and the condenser in Type C and Type D. It is found that the COP can be improved by 24% compared with the standard GAX cycle (in Type A) and the evaporation temperature of as low as -80°C can be obtained from the HGAX cycle (Type B). In Type C, the maximum desorption temperature can be reduced down to 164°C. Therefore, the corrosion problem, which becomes severe at higher temperature 200°C, can be completely removed. The maximum desorption temperature for the standard GAX cycle ranges 190-200°C. In Type D, the hot water temperature of as high as 106°C could be obtained. Therefore, Type D can be applied for space heating and panel or floor heating applications.

Original language	English
Pages (from-to)	442-448
Number of pages	7
Journal	International Journal of Refrigeration
Volume	27
Issue number	4
DOIs	https://doi.org/10.1016/j.ijrefrig.2003.10.007
Publication status	Published - 2004 Jun
Externally published	Yes

Bibliographical note

Funding Information:
This paper was performed for the Carbon Dioxide Reduction & Sequestration Center, one of 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.

Keywords

Absorption system
Ammonia-water
Mechanical vapour compression
Modelling
Performance

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

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10.1016/j.ijrefrig.2003.10.007

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title = "Performance analysis of advanced hybrid GAX cycles: HGAX",

abstract = "The objectives of this paper are to develop advanced hybrid GAX cycles (HGAX) using NH3-H2O by combining absorption and vapor compression cycles, and to perform parametric analysis of system pressures and component sizes for performance enhancement. Four different HGAX cycles are developed - Type A (Performance improvement), Type B (Low temperature applications) Type C (Reduction of desorption temperature) and Type D (Hot water temperature applications). A compressor is placed between the evaporator and the absorber in Type A and Type B, and placed between the desorber and the condenser in Type C and Type D. It is found that the COP can be improved by 24% compared with the standard GAX cycle (in Type A) and the evaporation temperature of as low as -80°C can be obtained from the HGAX cycle (Type B). In Type C, the maximum desorption temperature can be reduced down to 164°C. Therefore, the corrosion problem, which becomes severe at higher temperature 200°C, can be completely removed. The maximum desorption temperature for the standard GAX cycle ranges 190-200°C. In Type D, the hot water temperature of as high as 106°C could be obtained. Therefore, Type D can be applied for space heating and panel or floor heating applications.",

keywords = "Absorption system, Ammonia-water, Mechanical vapour compression, Modelling, Performance",

author = "Kang, {Yong Tae} and Hiki Hong and Park, {Kyoung Suk}",

note = "Funding Information: This paper was performed for the Carbon Dioxide Reduction & Sequestration Center, one of 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.",

year = "2004",

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AU - Kang, Yong Tae

AU - Hong, Hiki

AU - Park, Kyoung Suk

N1 - Funding Information: This paper was performed for the Carbon Dioxide Reduction & Sequestration Center, one of 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.

PY - 2004/6

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N2 - The objectives of this paper are to develop advanced hybrid GAX cycles (HGAX) using NH3-H2O by combining absorption and vapor compression cycles, and to perform parametric analysis of system pressures and component sizes for performance enhancement. Four different HGAX cycles are developed - Type A (Performance improvement), Type B (Low temperature applications) Type C (Reduction of desorption temperature) and Type D (Hot water temperature applications). A compressor is placed between the evaporator and the absorber in Type A and Type B, and placed between the desorber and the condenser in Type C and Type D. It is found that the COP can be improved by 24% compared with the standard GAX cycle (in Type A) and the evaporation temperature of as low as -80°C can be obtained from the HGAX cycle (Type B). In Type C, the maximum desorption temperature can be reduced down to 164°C. Therefore, the corrosion problem, which becomes severe at higher temperature 200°C, can be completely removed. The maximum desorption temperature for the standard GAX cycle ranges 190-200°C. In Type D, the hot water temperature of as high as 106°C could be obtained. Therefore, Type D can be applied for space heating and panel or floor heating applications.

AB - The objectives of this paper are to develop advanced hybrid GAX cycles (HGAX) using NH3-H2O by combining absorption and vapor compression cycles, and to perform parametric analysis of system pressures and component sizes for performance enhancement. Four different HGAX cycles are developed - Type A (Performance improvement), Type B (Low temperature applications) Type C (Reduction of desorption temperature) and Type D (Hot water temperature applications). A compressor is placed between the evaporator and the absorber in Type A and Type B, and placed between the desorber and the condenser in Type C and Type D. It is found that the COP can be improved by 24% compared with the standard GAX cycle (in Type A) and the evaporation temperature of as low as -80°C can be obtained from the HGAX cycle (Type B). In Type C, the maximum desorption temperature can be reduced down to 164°C. Therefore, the corrosion problem, which becomes severe at higher temperature 200°C, can be completely removed. The maximum desorption temperature for the standard GAX cycle ranges 190-200°C. In Type D, the hot water temperature of as high as 106°C could be obtained. Therefore, Type D can be applied for space heating and panel or floor heating applications.

KW - Absorption system

KW - Ammonia-water

KW - Mechanical vapour compression

KW - Modelling

KW - Performance

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Performance analysis of advanced hybrid GAX cycles: HGAX

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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