TY - JOUR
TI - Energy-saving and emission reduction system of data center heat pipe based on latent heat of water evaporation
AU - Zhao Jinhui
AU - Wang Panle
AU - Li Jingshun
AU - Gu Tianwei
AU - Lu Jiaxu
JN - Thermal Science
PY - 2022
VL - 26
IS - 5
SP - 4475
EP - 4487
PT - Article
AB - To address the current problem of high energy consumption in data centers,  this paper proposes a data center heat pipe air-conditioning system based on  the latent heat of water evaporation, which uses the latent heat of water  evaporation for cooling by creating a low pressure environment to evaporate  large amounts of water. In order to verify the effect of the system, a heat  pipe test bench based on the latent heat of water evaporation was designed  and built. Compared with the traditional heat pipe in the data center for  heat dissipation, the performance and economy of the water evaporation  latent heat pipe system designed in this paper are analyzed experimentally.  A multi-physics coupled model of water evaporation latent heat pipe  air-conditioning based on COMSOL Multiphysics was established to simulate  and study the temperature field and velocity field distribution of water  evaporation latent heat pipe air-conditioning system in data centers. The  research shows that: - Under the designed test conditions, compared with  the traditional heat pipe system, the water evaporation latent heat pipe air  conditioner can conduct 2540 kJ more heat in one day in an outdoor  environment of 24°C. - At an ambient temperature of 35°C and an indoor  temperature of 25.8 °C, the cooling capacity of the heat pipe in the data  center water evaporation latent heat pipe air-conditioning system is twice  the cooling capacity of the air conditioner, and the heat pipe can work  efficiently regardless of the outdoor ambient temperature. - The  energy-saving effect of the latent heat pipe of water evaporation in the  data center has a significant effect on air conditioners with an energy  efficiency rating (EER) lower than 2.5-4.4. It can improve the energy  efficiency of level 5 with an EER of 2.5 to level 2 with an EER of 3.22,  greatly reducing the power consumption of the data center air-conditioning  system. When the EER of the air conditioner exceeds 4.4, the coefficient of  performance of the data center water evaporation latent heat pipe  air-conditioning system will be lower than that of the air conditioner  itself.