Design Of Circulatory Spray Cooling System And Experimental Study Of Spray Cooling

As the power density of electronic components is increasing, and traditional natural convection, forced convection, heat pipe cooling methods such as conventional electronic cooling diminished the development of electronic technology to meet future needs. Spray cooling technology for its high heat capacity of the cooling process temperature is small, the advantages of small refrigerant has attracted the attention of researchers. Spray cooling heat transfer mechanism is very complex because of its impact are many factors, is still a need for more theoretical and experimental study.Studies comparing current spray cooling system and found that the cooling liquid spray cooling applications in engineering recycling is a key issue to achieve the product of the circulatory system is a prerequisite for application of spray cooling technology for the project coolant recycling the application of proposed use of micro-channel heat exchanger to achieve spray cooling coolant recycling program. Design and machining out the micro-channel heat exchanger, spray chamber and other experimental devices. Described design ideas and the assembly of the way. The experimental system, other key components, such as nozzles, pumps, cooling agents were compared with sex selection, built up a circle of spray cooling experimental system for the spray cooling heat exchange mechanism of experimental research and application basis.In this paper, circular spray cooling system as the experimental platform, with water as working fluid, for three solid cone pressure atomizing nozzle at constant heat flux, constant water temperature under the conditions of entry of different inlet pressure and jet height in case of non-boiling spray Fog cooling experiments. The results show that: in the experimental operating conditions, mass flow is greater than 2.5g/s, the heat source can be achieved average surface temperature is below 70℃. Spray area with the heat source area of tangent, the average surface temperature of the heat source is relatively low. In the spray height H1=36.7mm, H2=26mm when the center will produce a film about 6mm in diameter, circular convex, through experimental measurements found that the surface heat source around the central temperature is relatively high, on average, respectively in the two high higher than 1.54℃, 2.45℃.