自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 22    No. 8    August 2015

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Energy performance assessment on central air-conditioning system of commercial building: A case study in China
ZHOU Xuan(周璇)1, 2, LIAN Si-zhen(练斯甄)1, 2, YAN Jun-wei(闫军威)1, 2, KANG Ying-zi(康英姿)1, 2

1. School of Mechanical & Automotive Engineering, South China University of Technology,
Guangzhou 510640, China;
2. City Air-conditioning Energy Conservation and Control Project Technology Research Exploitation Center of Guangdong, Guangzhou 510640, China

Abstract:Energy performance assessment on central air-conditioning system is essential to optimize operating, reduce operating costs, improve indoor environmental quality, and determine whether the retrofitting of the equipment is necessary. But it is difficult to evaluate it reasonably and comprehensively due to its complexity. A “holistic” approach was discussed to evaluate the energy performance of central air-conditioning system for an extra-large commercial building in a subtropical city. All procedures were described in detail, including field investigation method, field measurement instruments, data processing and data analyzing. The main factors affecting energy consumption of air-conditioning system were analyzed and the annual cooling-energy use intensity of this building was calculated and also compared with other shopping malls and other types of buildings in Guangzhou. And COP (coefficient of performance) of chiller, water transfer factor of chilled water system and cooling water system were taken into consideration. At last, the thermal comfort and indoor air quality issues were addressed. The results show that the chilled water pumps are over-sized and the indoor environmental quality should be improved. The purpose of this work is to provide reference for energy performance assessment method for air-conditioning system.

 

Key words: energy performance assessment; thermal comfort; indoor air quality; central air-conditioning system; energy saving

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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