Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application

Chung Woo Jung; Seung Sun An; Yong Tae Kang

doi:10.1016/j.energy.2014.07.086

Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application

Chung Woo Jung, Seung Sun An, Yong Tae Kang

School of Mechanical Engineering

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

21 Citations (Scopus)

Abstract

The objectives of this paper are to analyze the heat transfer characteristics during the NH₃-H₂O absorption process in plate heat exchangers and to develop the experimental correlations of the heat transfer coefficient for the compression/absorption hybrid heat pump application. The parametric analysis on the effects of the absorber internal pressure, ammonia weak solution concentration and absorber geometric dimensions on the absorber capacity and system COP (coefficient of performance) is carried out. From the experimental results, the maximum absorber capacity of 7.3kW, COP of 2.66 and the maximum hot water outlet temperature of 80.7°C are obtained. It is concluded that the heat transfer coefficient of solution side increases with increasing the aspect ratio (L/D) while it does not significantly depend upon the aspect ratio (W/D). Finally, an experimental Nusselt number correlation is developed with ±20% error band and compared with the other correlation from the literature.

Original language	English
Pages (from-to)	371-378
Number of pages	8
Journal	Energy
Volume	75
DOIs	https://doi.org/10.1016/j.energy.2014.07.086
Publication status	Published - 2014 Oct 1

Bibliographical note

Funding Information:
This work was supported by the Industrial Strategic technology development program ( 10042562 , Development of heat exchanger type zero carryover liquid dehumidification/regeneration technology) funded by the Ministry of Knowledge Economy (MKE, Republic of Korea) .

Keywords

Absorber
Ammonia-water
Heat pump application
Plate heat exchanger
Thermal performance

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Pollution
Mechanical Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1016/j.energy.2014.07.086

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title = "Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application",

abstract = "The objectives of this paper are to analyze the heat transfer characteristics during the NH3-H2O absorption process in plate heat exchangers and to develop the experimental correlations of the heat transfer coefficient for the compression/absorption hybrid heat pump application. The parametric analysis on the effects of the absorber internal pressure, ammonia weak solution concentration and absorber geometric dimensions on the absorber capacity and system COP (coefficient of performance) is carried out. From the experimental results, the maximum absorber capacity of 7.3kW, COP of 2.66 and the maximum hot water outlet temperature of 80.7°C are obtained. It is concluded that the heat transfer coefficient of solution side increases with increasing the aspect ratio (L/D) while it does not significantly depend upon the aspect ratio (W/D). Finally, an experimental Nusselt number correlation is developed with ±20% error band and compared with the other correlation from the literature.",

keywords = "Absorber, Ammonia-water, Heat pump application, Plate heat exchanger, Thermal performance",

author = "Jung, {Chung Woo} and An, {Seung Sun} and Kang, {Yong Tae}",

note = "Funding Information: This work was supported by the Industrial Strategic technology development program ( 10042562 , Development of heat exchanger type zero carryover liquid dehumidification/regeneration technology) funded by the Ministry of Knowledge Economy (MKE, Republic of Korea) .",

year = "2014",

month = oct,

day = "1",

doi = "10.1016/j.energy.2014.07.086",

language = "English",

volume = "75",

pages = "371--378",

journal = "Energy",

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T1 - Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application

AU - Jung, Chung Woo

AU - An, Seung Sun

AU - Kang, Yong Tae

N1 - Funding Information: This work was supported by the Industrial Strategic technology development program ( 10042562 , Development of heat exchanger type zero carryover liquid dehumidification/regeneration technology) funded by the Ministry of Knowledge Economy (MKE, Republic of Korea) .

PY - 2014/10/1

Y1 - 2014/10/1

N2 - The objectives of this paper are to analyze the heat transfer characteristics during the NH3-H2O absorption process in plate heat exchangers and to develop the experimental correlations of the heat transfer coefficient for the compression/absorption hybrid heat pump application. The parametric analysis on the effects of the absorber internal pressure, ammonia weak solution concentration and absorber geometric dimensions on the absorber capacity and system COP (coefficient of performance) is carried out. From the experimental results, the maximum absorber capacity of 7.3kW, COP of 2.66 and the maximum hot water outlet temperature of 80.7°C are obtained. It is concluded that the heat transfer coefficient of solution side increases with increasing the aspect ratio (L/D) while it does not significantly depend upon the aspect ratio (W/D). Finally, an experimental Nusselt number correlation is developed with ±20% error band and compared with the other correlation from the literature.

AB - The objectives of this paper are to analyze the heat transfer characteristics during the NH3-H2O absorption process in plate heat exchangers and to develop the experimental correlations of the heat transfer coefficient for the compression/absorption hybrid heat pump application. The parametric analysis on the effects of the absorber internal pressure, ammonia weak solution concentration and absorber geometric dimensions on the absorber capacity and system COP (coefficient of performance) is carried out. From the experimental results, the maximum absorber capacity of 7.3kW, COP of 2.66 and the maximum hot water outlet temperature of 80.7°C are obtained. It is concluded that the heat transfer coefficient of solution side increases with increasing the aspect ratio (L/D) while it does not significantly depend upon the aspect ratio (W/D). Finally, an experimental Nusselt number correlation is developed with ±20% error band and compared with the other correlation from the literature.

KW - Absorber

KW - Ammonia-water

KW - Heat pump application

KW - Plate heat exchanger

KW - Thermal performance

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SN - 0360-5442

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JO - Energy

JF - Energy

ER -

Thermal performance estimation of ammonia-water plate bubble absorbers for compression/absorption hybrid heat pump application

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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