| dc.description.abstract | Due to the heat dissipate need for next generation processor, this research builds a 1 kW pumped two-phase evaporate cooling system, in replace the shortcoming of huge water flow rate and pumping power in liquid cooling system with high heat flux cooling. For the evaporator, we design rectangular channel with different channel height 2 mm and 3 mm, the result shows 3 mm has better heat transfer performance and lower pressure drop owing to higher heat transfer area and channel cross section. Both kind of evaporator get max heat transfer coefficient in flow rate at 350 ml/min and 1050 W heat dissipate, shows the ability to deal with 1 kW heat.
For the pump, cavitation effect needs to be avoid, so we compare the minimum inlet subcooled of commercial centrifugal and diaphragm pump, result shows centrifugal pump needs lower subcooled temperature, means decrease the thermal resistance of condenser and evaporator.
In application, the thermal resistance balance of evaporator and condenser should be considering, test different fluid working temperature in 40℃、45℃ and 50℃ in dissipating of 1 kW heat, evaporator and condenser thermal resistance meets together in 0.023℃/W and 0.024℃/W with working temperature in 50℃. | en_US |