| Title |
Aluminum and Plastic Heat Exchange Element : A Performance Comparison for Cooling of Telecommunication Cabinet |
| DOI |
https://dx.doi.org/10.6110/KJACR.2017.29.6.279 |
| Keywords |
통신 함체 ; 열교환기 ; 알루미늄 ; 플라스틱 ; 직교류 ; 대향류 Telecommunication cabinet ; Heat exchanger ; Aluminum ; Plastic ; Cross flow ; Counter flow |
| Abstract |
Heat generation rate in a telecommunication cabinet increases due to the continued usage of mobile devices. Insufficient removal of heat intensifies the cabinet temperature, resulting in the malfunction of electronic devices. In this study, we assessed both aluminum and plastic heat exchangers used for cooling of the telecommunication cabinet, and compared the results against theoretical predictions. The aluminum heat exchanger was composed of counter flow parallel channels of 4.5 mm pitch, and the plastic heat exchangers were composed of cross flow triangular channels of 2.0 mm pitch. Samples were made by installing two plastic heat exchangers in both series and parallel. Results showed that the heat transfer rate was highest for the series cross flow heat exchanger, and was least for the aluminum heat exchanger. The temperature efficiency of the series cross flow heat exchanger was 59% greater than that of the aluminum heat exchanger, and was 4.3% greater than that of the parallel cross flow heat exchanger. In contrast, the pressure drop of the parallel cross flow heat exchanger was significantly lower than other samples. The heat exchange efficiency was also the largest for the parallel cross flow heat exchanger. The theoretical analysis predicted the temperature efficiency to be within 3.3%, and the pressure drop within 6.1%. |