The Effect of The Location of Constant Temperature Heat and Cooling Sources on The Natural Heat Transfer of A Chamber (Cooling Tunnel)

The purpose of this paper is to investigate the effect of the location of heat sources on the heat transfer of natural displacement inside a rectangular chamber with fixed dimensions, the walls of which are well insulated. Inside the chamber, two high-temperature heat sources are located on the lower surface and a coolingsource near the roof with a gentle slope. The coolingsource temperature is considered to be zero degrees Celsius and the hot source temperature is assumed to be equal to 60 degrees Celsius. This geometry has been selected for the purpose of modeling long cooling tunnels in cooling-moving refrigerators. The coolingsource is considered as an evaporator and the hot source is equivalent to pallets containing hot materials (which are intendedfor cooling). Based on this goal, the dimensions of the problem are assumed to be about one room, the values of which are listed below. The parameters studied in this study are: distance of hot sources from each other, distance and angle of coolingsource which is modeled for several different values in Ensys Fluent software and the effect of changes in each parameter on the pattern of flow lines, temperature and heat transfer rate. The general result obtained for different modeling conditions of this problem shows that the total flow consists of six zones inside the chamber and each zonehas its own characteristics in terms of flow that if this system is used in systems Combined, the overall efficiency of the system will be greatly increased.