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Analysis of China-plaza Central Air Conditioning System Operation Properties

Author: DuZhiHeng
Tutor: LiuJinPing
School: South China University of Technology
Course: Power Engineering
Keywords: Public buildings Central air conditioning system Energy consumptionanalysis Energy-saving
CLC: TU831
Type: Master's thesis
Year: 2013
Downloads: 15
Quote: 0
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Abstract


In tandem with the development of economy and people’s living standard in recent years,there are more and more public buildings in the city. Central air conditioning system in publicbuildings is increasing as people’s demand on indoor environment rising, so the proportion ofbuilding energy consumption increases significantly.At present, most government office buildings and city’s buildings consume huge amountof energy, but energy efficiency is low, and management is poor. According to the domesticand international requirements on energy saving and emission reduction, as well as （ourcountry’s） Chinese actual need in terms of energy saving，to analyze the operation of centralair-conditioning systems in large public buildings is not only pragmatic（valuable in practicalengineering）, but also instructional and meaningful in the energy-saving of urban publicbuildings.This research accessed the2009Guangzhou China Plaza (phase I) centralair-conditioning system running （operation）data. The chiller running current, load factor,evaporating pressure, condensing pressure, water temperature of chilled water systems,cooling water systems and other operating parameters are summarized and analyzed toevaluate their impacts on energy-saving to understand the central air-conditioning energyconsumption and identify problems.Results showed that China Plaza’s air conditioning system’s energy consumption is high.The centrifugal compressor stays in high load state, and the centrifugal evaporator as well asthe condenser heat exchangers are ineffective, and so on. Improved central air conditioningsystem energy-saving operation is proposed based on the problems found.

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CLC: > Industrial Technology > Building Science > Housing construction equipment > Air-conditioning, heating, ventilation,and its equipment > Air-conditioning
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