Investigation on automatic commissioning of air-conditioning system

Pao Yue-kong Library Electronic Theses Database

Investigation on automatic commissioning of air-conditioning system

 

Author: Cheng, Kai-tat
Title: Investigation on automatic commissioning of air-conditioning system
Degree: M.Eng.
Year: 2007
Subject: Hong Kong Polytechnic University -- Dissertations.
Air conditioning -- Automatic control.
Buildings -- Environmental engineering.
Department: Dept. of Building Services Engineering
Pages: viii, 95, [7] leaves : ill. ; 30 cm.
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2117569
URI: http://theses.lib.polyu.edu.hk/handle/200/2733
Abstract: Nowadays, energy efficiency of the building performance is concerned as well as the building lifecycle since many developers want to cut down the maintenance cost of operating the building. But, the fault occurrence and the poor performance of the building system lead the increasing of operating cost. Commissioning can provide a good way to monitor the system performance which is playing an important role for detecting the potential fault. Meanwhile, Building Automation System (BAS) can carry out the continuous monitoring to the system that the commissioning also can be conducted through the BAS. Thus, in this study, the main objective is to develop and validate a reliable method for automatic commissioning of building air-conditioning systems to improve their energy and environment performance in the whole building lifecycle. The expert rule system based on BAS was proposed to conduct this research. Basically, the potential problems and fault can be detected easily by the expert rules which were set by experience expertise. Thus, the system performance can directly reflect from the BMS system and the problem can be indicated by the expert system as well. Two cases study was investigated in order to provide the evidence of the validity of this research. Also, the system recommends the possible reasons for the operators to check out the causes so that the proper maintenance can be carried out. As a result, the energy effectiveness can be improved and building life cycle can be elongated.

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