A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An experimental and analytical study of a hybrid air-conditioning system in buildings residing in tropics
Abstract A hybrid evaporative pre-cooled air-conditioning system has been proposed for operation in humid tropical climatic conditions. The indirect evaporative heat exchanger (IEHX) works in tandem with a conventional air handling unit (AHU). The IEHX operates as an evaporative-enhanced heat recovery device to treat the ambient intake air. An experimental study has been carried out to systematically investigate the performance of a lab-scale IEHX when combined with a chiller under steady-state conditions. In addition, a mathematical model is judiciously developed for both the IEHX and cooling coil. Key results have indicated that the IEHX is capable of pre-cooling and pre-dehumidifying the ambient intake air. In addition, the pre-cooling process facilitates the supply of a higher chilled water supply temperature to meet cooling needs particularly at higher outdoor air fractions. Finally, the hybrid evaporative pre-cooled air-conditioning system is evaluated in terms of its energy consumption performance based on a design day weather condition.
An experimental and analytical study of a hybrid air-conditioning system in buildings residing in tropics
Abstract A hybrid evaporative pre-cooled air-conditioning system has been proposed for operation in humid tropical climatic conditions. The indirect evaporative heat exchanger (IEHX) works in tandem with a conventional air handling unit (AHU). The IEHX operates as an evaporative-enhanced heat recovery device to treat the ambient intake air. An experimental study has been carried out to systematically investigate the performance of a lab-scale IEHX when combined with a chiller under steady-state conditions. In addition, a mathematical model is judiciously developed for both the IEHX and cooling coil. Key results have indicated that the IEHX is capable of pre-cooling and pre-dehumidifying the ambient intake air. In addition, the pre-cooling process facilitates the supply of a higher chilled water supply temperature to meet cooling needs particularly at higher outdoor air fractions. Finally, the hybrid evaporative pre-cooled air-conditioning system is evaluated in terms of its energy consumption performance based on a design day weather condition.
An experimental and analytical study of a hybrid air-conditioning system in buildings residing in tropics
Cui, X. (author) / Islam, M.R. (author) / Chua, K.J. (author)
Energy and Buildings ; 201 ; 216-226
2019-06-11
11 pages
Article (Journal)
Electronic Resource
English
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