Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An experimental Investigation of effectiveness of a closed-end flat heat pipe heat exchanger (CEFHPHE)
The effectiveness of a closed-end flat heat pipe heat exchanger (CEFHPHE) was investigated experimentally.The CEFHPHE consists of three parts, which include the evaporator, adiabatic and condenser sections that thelengths were 300, 100 and 300 mm respectively. The standard copper tube with inner diameter of 8.6 mm and0.46 mm thick was pressed to reform its cross sectional area for a flat tube, and then bent to many U-shapes,which was closed at both ends. The water was used for working fluid with filling ratios of 45% of internal volume.In experiments, hot air was used for supplying the heat to the evaporator section with different temperatures(105-145oC), and different velocities (0.5-2.0 m/s). Fresh air was used for cooling condenser section withtemperature approximately 30oC, and was kept constant velocity at 0.5 m/s. The experimental results indicatedthat the effectiveness of CEFHPHE increase with the inlet hot air temperature, and decrease with the increase ofhot air velocity. In addition, the effectiveness of the CEFHPHE obtained from the experiments varied between0.35 and 0.74.
An experimental Investigation of effectiveness of a closed-end flat heat pipe heat exchanger (CEFHPHE)
The effectiveness of a closed-end flat heat pipe heat exchanger (CEFHPHE) was investigated experimentally.The CEFHPHE consists of three parts, which include the evaporator, adiabatic and condenser sections that thelengths were 300, 100 and 300 mm respectively. The standard copper tube with inner diameter of 8.6 mm and0.46 mm thick was pressed to reform its cross sectional area for a flat tube, and then bent to many U-shapes,which was closed at both ends. The water was used for working fluid with filling ratios of 45% of internal volume.In experiments, hot air was used for supplying the heat to the evaporator section with different temperatures(105-145oC), and different velocities (0.5-2.0 m/s). Fresh air was used for cooling condenser section withtemperature approximately 30oC, and was kept constant velocity at 0.5 m/s. The experimental results indicatedthat the effectiveness of CEFHPHE increase with the inlet hot air temperature, and decrease with the increase ofhot air velocity. In addition, the effectiveness of the CEFHPHE obtained from the experiments varied between0.35 and 0.74.
An experimental Investigation of effectiveness of a closed-end flat heat pipe heat exchanger (CEFHPHE)
Srimuang, Wasan (Autor:in) / Khantikomol, Preecha (Autor:in) / Krittacom, Bundit (Autor:in)
15.05.2013
Engineering and Applied Science Research; Vol 40 No 1 (2013); 21-27 ; 2539-6218 ; 2539-6161
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
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