Initial results are reported for the effects of electrical body forces on heat transfer performance of an instrumented spray cooling experiment. Heat transfer performance is documented for ranges of electrode voltage, spray volume flow rate, and heater power level using a Thick Film Resistor heater. The heat transfer coefficient increases with increased spray flow rate, and also increases somewhat versus heat flux. Without the electrical body forces, different brass and PVC spray nozzles show significant variation in spray cooling performance (order of ±5-15%) whenever the nozzle is realigned. Changing the nozzle-to-heater spacing results in similar performance variations. Initial Kelvin force electrode designs show no improvement in heat transfer performance using FC-72, while a Coulomb force electrode geometry and a second-generation Kelvin force electrode design both show modest but consistent improvements (order of 10% in heat flux; order of 5% for Nusselt number) using HFE-7000.
Electrical Force Effects on Spray Cooling
Sae Technical Papers
Power Systems Conference ; 2006
2006-11-07
Aufsatz (Konferenz)
Englisch
Electrical force effects on spray cooling
Kraftfahrwesen | 2006
|Lithium spray structural cooling
AIAA | 1968
|Lithium spray structural cooling.
AIAA | 1969
|Gravity effect on spray impact and spray cooling
Tema Archiv | 2007
|