Experimental study of the effect of heat load on the thermal performance of a loop heat pipe model

Passive cooling system is required as redundant if the cooling system is active on the installation of nuclear experiencing the failure of the operation. Concept technology system of the passive cooling potential is used to absorb and get rid of the heat by better is a loop heat pipe (LHP). Expected LHP be a solution to thermal management in the safety operation of the nuclear installation. The purpose of this experimental study is to investigate the phenomenon of heat transfer that occurs in the model of the LHP and how the performance of the thermal in absorbing and removing heat. The method used is to do an experiment model of the LHP in the variation of heat load at 35 °C, 45 °C, 55 °C, and 65 °C. The results of the experimental study show that the obtained phenomenon of overshoot, zigzag, and stable as a common phenomenon of heat transfer that occurs in the LHP with the value of the thermal barriers of the smallest of 0,0017 °C/W, which is obtained at the time of model LHP operated at a heat load of 65 °C. The conclusion of this research shows that the higher the heat load received by the evaporator causes the small resistance value of the thermal model of the LHP. (author)