ISSN Online: 2377-424X
ISBN Print: 978-1-56700-421-2
International Heat Transfer Conference 15
Preliminary Experimental Study on Start-up Behavior in Nitrated Gravity Heat Pipe
Sinopsis
Molten salt is a kind of effective heat transfer fluid. Molten nitrate is employed as the heat transfer fluid of
heat pipes in this paper. Then the startup operation of heat pipes is investigated experimentally. Shell of heat
pipes tested is made in 316L stainless steel with outer diameter of 22 mm, wall thickness of 2 mm and total
length of 980 mm. Experiment results show that the molten salt heat pipe can start up very well, startup time
period of molten salt heat pipes is shorter than that of a heat pipe with 40g naphthalene, and temperature
difference between evaporation zone and condensation zone while start-up time at inclination angle of 50° is
smaller than those at 30°,70° and 90°. Initial experiments show that the molten salt is feasible as the heat
transfer fluid of heat pipes.