Analysis on start up and heat transfer performance of mercury heat pipe under alternating heating power

Heat pipe may be affected by the high temperature heat source during operation, resulting in unsteady oscillation heating. In this paper, influence of alternating power and period on start-up transfer performance mercury is studied using method equivalent thermal resistance pipe. The results are as follows:1) time heating steady-state basically equal; 2) For heating, changes periodically, increasing or amplitude will lead to increase fluctuation temperature, greater than that changing power. 3) Under condition periodically. increases with amplitude, period.