Simulation study on the operating characteristics of the heat pipe for combined evaporative cooling of computer room air-conditioning system

Energy ◽  
2016 ◽  
Vol 98 ◽  
pp. 15-25 ◽  
Author(s):  
Zongwei Han ◽  
Yanqing Zhang ◽  
Xin Meng ◽  
Qiankun Liu ◽  
Weiliang Li ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Simulation Study ◽  
Air Conditioning ◽  
Evaporative Cooling ◽  
Operating Characteristics ◽  
Air Conditioning System

Analysis of Heat Pipe Heat Exchanger (HPHE) For Waste Heat Recovery from an Air Conditioning System

2007 ◽  
Vol 2 (3) ◽  
pp. 86-95
Author(s):  
R. Sudhakaran ◽  
◽  
V. Sella Durai ◽  
T. Kannan ◽  
P.S. Sivasakthievel ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Heat Pipe ◽  
Air Conditioning ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Air Conditioning System ◽  
Pipe Heat

scholarly journals Research on Heat Transfer Performance of Micro-Channel Backplane Heat Pipe Air Conditioning System in Data Center

2020 ◽  
Vol 10 (2) ◽  
pp. 583
Author(s):  
Liping Zeng ◽  
Xing Liu ◽  
Quan Zhang ◽  
Jun Yi ◽  
Xianglong Liu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Heat Pipe ◽  
Temperature Difference ◽  
Air Conditioning ◽  
Heat Transfer Performance ◽  
Transfer Performance ◽  
Micro Channel ◽  
Filling Rate ◽  
Air Conditioning System

This paper deals with the heat transfer performance of a micro-channel backplane heat pipe air conditioning system. The optimal range of the filling rate of a micro-channel backplane heat pipe air conditioning system was determined in the range of 65–75%, almost free from the interference of working conditions. Then, the influence of temperature and air volume flow rate on the heat exchange system were studied. The system maximum heat exchange is 7000–8000 W, and the temperature difference between the inlet and outlet of the evaporator and the condenser is almost 0 °C. Under the optimum refrigerant filling rate, the heat transfer of the micro-channel heat pipe backplane system is approximately linear with the temperature difference between the inlet air temperature of the evaporator and the cooling distribution unit (CDU) inlet water temperature in the range of 18–28 °C. The last part compares the heat transfer characteristics of two refrigerants at different filling rates. The heat transfer, pressure, and refrigerant temperature of R134a and R22 are the same with the change of filling rate, but the heat transfer of R134a is lower than that of R22. The results are of great significance for the operational control and practical application of a backplane heat pipe system.

Application of pump-assisted separate heat pipe on dehumidifying enhancement in air conditioning system

2016 ◽  
Vol 98 ◽  
pp. 374-379 ◽  
Author(s):  
Z.J. Guo ◽  
J. Shao ◽  
X.H. Li ◽  
R.J. Liu ◽  
Wei Wang ◽  
...  
Keyword(s):  
Heat Pipe ◽  
Air Conditioning ◽  
Air Conditioning System

Research on Raising Load Potentials Using MPCM Slurry Storage

2014 ◽  
Vol 568-570 ◽  
pp. 1770-1773
Author(s):  
Guang Wei Zhao
Keyword(s):  
Energy Saving ◽  
Air Conditioning ◽  
Design Method ◽  
Evaporative Cooling ◽  
Simulation Code ◽  
Air Conditioning System ◽  
Energy Saving Potential ◽  
Microencapsulated Phase Change Material ◽  
Slurry Storage ◽  
Change Material

Evaporative cooling is able to generate the cooling medium at a temperature approaching to the ambient wet bulb temperature. In this paper, a low-energy air-conditioning strategy is proposed, which is a combination of cooled ceiling (CC),microencapsulated phase change material (MPCM) slurry storage and evaporative cooling technologies. The assessment of evaporative cooling availability and utilization is done for five representative climatic cities, including Hong Kong, Shanghai, Beijing, Lanzhou and Urumqi in China, and the energy saving potential of the proposed air-conditioning system is analyzed by using a well validated building simulation code. The results indicate that the new system offers energy saving potential up to 80% under northwestern Chinese climate and up to 10% under southeastern Chinese climate. The optimal design method of the slurry storage tank is also proposed based on the slurry cooling storage behaviors and cooling demand variations of the ceiling panels.

Sign in / Sign up

Export Citation Format

Share Document