Experiment Research And Numerical Simulation Of Heat Pipe Ice Storage

Power consumption is lack increasingly along with the rapid development of economy in our country. Especially shortage of power leads to power rationing when power consumption peaks. The government carry out many measures to promote development of ice storage technology making use of off-peak electricity to balance network load. As a high-efficiency heat-exchange device, heat pipe has wide application in every walk of life. But heat pipe has few application in the ice thermal storge. Heat pipe ice storage device that can realize ice- making and ice-melting was researched through experimental and numerical method in this paper.Ice storage technology and application in thermal storage of heat pipe was summarized and research content and emphasis was proprosed in this paper in the first. Heat pipe ice making and ice melting experimental system was built according to experimental requirements. Various factors (glycol temperature and flow rate,heat pipe filling amount and three section ratio) impact on ice making was experimented and temperature distribution in ice tank was analyzed in paper. Experiment results state clearly that heat pipe with little filling amount is in favour of ice making. Lower temperature glycol and more flow rate glycol can promote ice making according to experiment result. Temperature distribution in ice tank appear spin flip phenomenon basis on temperature distribution analysis, which lead to inverted cone ice shape. It was clear that glylcol flow rate had little impact on ice melting basis on heat pipe ice melting experiment result.It took almost the same time to melt ice with different glylcol flow rate.Mathematical and physical model about heat pipe ice making was built through simplifying practical situation. Numerical simulation about heat pipe ice making was calculated through Fluent that is a numerical simulation software. Because model was not uniform heat flux boundary, so boundary conditon was set through user defined function. Water is not boussinesq fluid, so its density has not linear relation with temperature change. In Fluent calculation, boussinesq assumption is not suitable for water and its density was set through user defined function. Experiment result and numerical result have consistency with temperature distribution and ice storage account.