COMPARATIVE STUDY OF THE THERMAL PERFORMANCES OF TWO-PHASE CLOSED THERMOSYPHONS AND HEAT PIPES

Autor/autori: Gabriela HUMINIC, Angel HUMINIC


Abstract: The main goal of the present study was to investigate of the thermal performances of two-phase closed thermosyphons (TPCT) and heat pipes (HPs) using distilled water as working fluid. The TPCT and HP were fabricated from the copper tube with the outer diameter and length of 10 and 310 mm, respectively. The effect of operating temperature on the thermal performances of TPCTs and HPs were investigated. Current results showed that the heat transfer rates of the HP were much higher than those of the TPCT at temperature difference within the range of 35-55 K. Above of this temperature, the heat transfer rates of the TPCT become higher than those of the HP. The overall thermal resistance of the TPCT is reduced by 19% when compared to the HP in conditions of TPCT operation at maximum temperature difference. Also, the overall heat resistance of the HP is reduced by 22%, at low temperatures differences (~ 39 K).

Keywords: Two-phase closed thermosyphon, heat pipe, thermal performance.

 

DOWNLOAD PDF