Site test and validation of free cooling strategies for optimized energy performance in a super-high-rise building

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Site test and validation of free cooling strategies for optimized energy performance in a super-high-rise building

 

Author: Lang, Jun
Title: Site test and validation of free cooling strategies for optimized energy performance in a super-high-rise building
Degree: M.Eng.
Year: 2011
Subject: Tall buildings -- Energy consumption -- China -- Hong Kong.
Tall buildings -- Energy conservation -- China -- Hong Kong.
Tall buildings -- Cooling -- China -- Hong Kong.
Indoor air quality.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Building Services Engineering
Pages: xii, 117 leaves : ill. (some col.) ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2449799
URI: http://theses.lib.polyu.edu.hk/handle/200/6395
Abstract: Energy consumption and indoor air quality (IAQ) have received increasing concern in modern commercial and office buildings. It is the hope of engineers to achieve the satisfied indoor air quality (IAQ) with minimum energy consumption. Then, one key factor, affecting the energy consumption and the indoor air quality (IAQ), is the outdoor air flow rate. To control the outdoor air ventilation is very important for reducing the energy consumption. Therefore, this dissertation considers the energy saving feasibility of free cooling strategies which can apply in primary air units (PAUs) while achieving satisfied indoor air quality (IAO) with minimum energy consumption in winter period in Hong Kong. The aim of the dissertation focuses on the optimized energy performance for using the free cooling strategies in a super-high-rise building in Hong Kong. According to the Hong Kong Observatory (HKO) records, outdoor dry-bulb temperature and outdoor air relative humidity in winter period was found to be feasible to implement free cooling strategies for improved operation. Through a series of calculations, the optimal point can be found. Certainly, the minimum requirement of fresh air flow provided by demand-controlled ventilation (DCV) strategy should be considered. The higher one of these two outdoor air flow rates is the real optimal setting point.

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