The Field Survey on Local Heat Island Effect of Precision Air-Conditioning
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The local heat island effect (LHIE) plays an important role in the energy consumption of precision air-conditioning system, the data center cooling system. This paper conducted a field survey on the LHIE caused by precision air-conditioning system and its effect on the energy efficiency of the cooling system. The inlet and outlet air temperature and air velocity of the air cooled condenser (outdoor component of precision air conditioner), and also the environment temperature, are measured and applied in the analysis. The results show that the average inlet air temperature of outdoor units of the precision air-conditioning is 8 °C warmer than the environment air temperature, and the inlet airspeed is slow. The existence of the LHIE will be resulting 24% more energy consumption of the tested precision air-conditioning system. This paper verified the existence of LHIE and offers a reference for further study of it.
KeywordsPrecision air-conditioning Local heat island effect Energy consumption
The authors acknowledge the support from the Bes. Tech, Inc for the field survey of this study.
Permissions Appropriate permissions from responsible authorities were obtained for this study in the field survey on the Data Center.
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