Title :
A condensate-less design of cold plate in vapor-compression system applicable to high-end computing
Author :
Wu, Yu-Lieh ; Yang, Kai-Shing ; Lin, Shih-Jie ; Chang, Wen-Ruey ; Wang, Chi-Chuan
Author_Institution :
Dept. of Refrigeration, Air Conditioning & Energy Eng., Nat. Chin-Yi Univ. of Technol., Taiping
Abstract :
A novel design featuring a two-stage expansion process is proposed in this study. Without any help of insulation, the design can minimize or even entirely eliminate the formation of condensate in the cold-plate surface for a typical refrigeration system. The design incorporates a double-pipe inlet outlet and a two-container cold plate. A detailed comparison is also made amid conventional cold plate and the present condensate-less cold plate. For the conventional cold plate, it is found that the refrigerant mass flowrate is almost unchanged with respect to heating load. However, a slight decrease of mass flowrate for the present condensate-less cold plate is seen due to additional expansion/contraction/friction loss occurring in the first container. In addition, the decay in mass flowrate results in a gradual decline of outlet temperature that is opposite to the conventional cold-plate design.
Keywords :
refrigeration; cold-plate design; cold-plate surface; condensate-less design; double-pipe inlet outlet; expansion-contraction-friction loss; refrigerant mass flowrate; refrigeration system; two-stage expansion process; vapor-compression system; CMOS technology; Cold plates; Electronics cooling; Heat transfer; Integrated circuit technology; Refrigeration; Temperature; Thermal conductivity; Thermal resistance; Thermoelectricity; Refrigeration; cold plate; condensate-less; two-stage expansion;
Conference_Titel :
Semiconductor Thermal Measurement and Management Symposium, 2009. SEMI-THERM 2009. 25th Annual IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-3664-4
Electronic_ISBN :
1065-2221
DOI :
10.1109/STHERM.2009.4810737
