B113 トップヒート型熱サイフォンの基本特性について(OS-9:太陽熱利用(I))

抄録

The thermosyphon can operate without an external power supply, and have simple structures. Therefore, thermosyphon can be expected to reduce energy consumption and consequently reduce CO_2 emissions. Recently, Ippohshi et al. developed a thermosyphon in which heat is transferred from an evaporator near its top to a cooler at its base by exploiting the density difference of two-phase flow. However, this device has a large heat capacity due to the reservoir and condenser being housed within a single case and it also takes a considerable amount of time before the water in the pipe starts to circulate. Ito et al. developed a device that the reservoir and the condenser are separate. Using this device, it was possible to drastically reduce the time before circulation commences. In this study, we examined performance of Ito's thermosyphon system. Experimental results show that operation statuses are affected by the reservoir structure and the angle of condenser.