Experimental Study on Heat Transfer of Pool Boiling and In-tube Condensation

摘要

An experimental study was conducted on pool boiling heat transfer and in-tube condensing heat transfer in different working conditions. Analysis the total heat transfer, so as to verity weather tank can meet remove the heat amount produced by electric heating equipment in steam generator. Also the influence of each experimental parameters was analyzed on heat transfer coefficient, as well as the pool boiling heat transfer of boiling scene. The result shows that, steam in tube was condensed into saturate water after 3 min 2 MPa and 2.4 m in 5 MPa. This paper analyzes the relations among pool boiling heat transfer coefficient, in-tube condensing heat transfer coefficient, and total heat transfer coefficient. It concluded that, for 2 MPa, pool boiling heat transfer coefficient was the highest. The contrast of system total heat transfer capacity and pool boiling heat transfer capacity shows that their error was in the range of rationale, which meant the heat transfer capacity of cooling tank can remove system residual heat.