Design of chilled water system for high rise building

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Design of chilled water system for high rise building

 

Author: Wong, Kwok-wah
Title: Design of chilled water system for high rise building
Degree: M.Sc.
Year: 1997
Subject: Tall buildings -- Air conditioning
Refrigeration and refrigerating machinery
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Pages: viii, 92 leaves : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1403338
URI: http://theses.lib.polyu.edu.hk/handle/200/1796
Abstract: There are difficulties in building services design for high rise building such as building sway (Berglund 1991), stack effect (Tamblyn 1991), vertical transportation problem, etc. Chilled water system is one of the design problems as a simple single system results in very high hydrostatic pressure due to the building height. Improper design causes high initial cost, operation cost and poor maintainability. This project aims to establish guidelines for designers in selecting a suitable system for high rise buildings with the aids of computer simulation. A survey of existing chilled water system designs for high rise building was carried out to give a general picture of existing designs. Characteristics of different types of design are discussed in detail. Computer program HTB2 and BECON are used to simulate the cooling loading and energy consumption of buildings. Energy consumption data of an existing high rise building is used to verify the accuracy of the computer program. Different types of chilled water system designs with building height ranging from 40 storeys to 80 storeys have been investigated and found that any system over 25 bar operating pressure are not recommendable whereas single system under 25 bar operating pressure is preferred.

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