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

Xia Liang; M. Y. Chan; Deng Shiming

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, Deng Shiming

Research output: Journal Publication › Article › 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 - Dec 2008
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering
General Energy
Management, Monitoring, Policy and Law

UN SDGs

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

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10.1016/j.apenergy.2008.03.007

Cite this

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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.",

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

author = "Xia Liang and Chan, {M. Y.} and Deng Shiming",

note = "Funding Information: The financial supports from both the Hong Kong Polytechnic University (G-U271) and the Research Great Council (RGC) of HKSAR (B-Q05R) are gratefully acknowledged.",

year = "2008",

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doi = "10.1016/j.apenergy.2008.03.007",

language = "English",

volume = "85",

pages = "1198--1207",

journal = "Applied Energy",

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publisher = "Elsevier BV",

number = "12",

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T1 - Development of a method for calculating steady-state equipment sensible heat ratio of direct expansion air conditioning units

AU - Liang, Xia

AU - Chan, M. Y.

AU - Shiming, Deng

N1 - Funding Information: The financial supports from both the Hong Kong Polytechnic University (G-U271) and the Research Great Council (RGC) of HKSAR (B-Q05R) are gratefully acknowledged.

PY - 2008/12

Y1 - 2008/12

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

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JO - Applied Energy

JF - Applied Energy

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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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