Development of a method for calculating steady-state equipment sensible heat ratio of direct expansion air conditioning units

Xia Liang; M. Y. Chan; Shiming Deng

doi:10.1016/j.apenergy.2008.03.007

Development of a method for calculating steady-state equipment sensible heat ratio of direct expansion air conditioning units

Xia Liang, M. Y. Chan, Shiming Deng

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

10 Citations (Scopus)

Abstract

A complete set of calculation method for steady-state equipment sensible heat ratio (SHR) for a direct expansion (DX) cooling coil has been developed and reported. The method was based on the fundamentals of energy conservation and heat and mass transfer taking place in the DX cooling coil, and was experimentally validated using an experimental DX A/C rig. With the method developed, the effect of refrigerant evaporating temperature at fixed inlet air conditions on equipment SHR has been theoretically analyzed. The validated method can be useful in further studying the inherent operating characteristics of a DX air conditioning (A/C) unit and in developing suitable control strategies for achieving higher energy efficiency and better indoor thermal environment.

Original language	English
Pages (from-to)	1198-1207
Number of pages	10
Journal	Applied Energy
Volume	85
Issue number	12
DOIs	https://doi.org/10.1016/j.apenergy.2008.03.007
Publication status	Published - 1 Jan 2008

Keywords

Calculation method
Direct expansion (DX) cooling coil
Heat and mass transfer
Sensible heat ratio (SHR)

ASJC Scopus subject areas

Civil and Structural Engineering
General Energy

UN SDGs

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

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10.1016/j.apenergy.2008.03.007

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title = "Development of a method for calculating steady-state equipment sensible heat ratio of direct expansion air conditioning units",

abstract = "A complete set of calculation method for steady-state equipment sensible heat ratio (SHR) for a direct expansion (DX) cooling coil has been developed and reported. The method was based on the fundamentals of energy conservation and heat and mass transfer taking place in the DX cooling coil, and was experimentally validated using an experimental DX A/C rig. With the method developed, the effect of refrigerant evaporating temperature at fixed inlet air conditions on equipment SHR has been theoretically analyzed. The validated method can be useful in further studying the inherent operating characteristics of a DX air conditioning (A/C) unit and in developing suitable control strategies for achieving higher energy efficiency and better indoor thermal environment.",

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AU - Chan, M. Y.

AU - Deng, Shiming

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Y1 - 2008/1/1

N2 - A complete set of calculation method for steady-state equipment sensible heat ratio (SHR) for a direct expansion (DX) cooling coil has been developed and reported. The method was based on the fundamentals of energy conservation and heat and mass transfer taking place in the DX cooling coil, and was experimentally validated using an experimental DX A/C rig. With the method developed, the effect of refrigerant evaporating temperature at fixed inlet air conditions on equipment SHR has been theoretically analyzed. The validated method can be useful in further studying the inherent operating characteristics of a DX air conditioning (A/C) unit and in developing suitable control strategies for achieving higher energy efficiency and better indoor thermal environment.

AB - A complete set of calculation method for steady-state equipment sensible heat ratio (SHR) for a direct expansion (DX) cooling coil has been developed and reported. The method was based on the fundamentals of energy conservation and heat and mass transfer taking place in the DX cooling coil, and was experimentally validated using an experimental DX A/C rig. With the method developed, the effect of refrigerant evaporating temperature at fixed inlet air conditions on equipment SHR has been theoretically analyzed. The validated method can be useful in further studying the inherent operating characteristics of a DX air conditioning (A/C) unit and in developing suitable control strategies for achieving higher energy efficiency and better indoor thermal environment.

KW - Calculation method

KW - Direct expansion (DX) cooling coil

KW - Heat and mass transfer

KW - Sensible heat ratio (SHR)

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DO - 10.1016/j.apenergy.2008.03.007

M3 - Journal article

SN - 0306-2619

VL - 85

SP - 1198

EP - 1207

JO - Applied Energy

JF - Applied Energy

IS - 12

ER -

Development of a method for calculating steady-state equipment sensible heat ratio of direct expansion air conditioning units

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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