ISSN Online: 2377-424X
ISBN Print: 978-1-56700-474-8
ISBN Online: 978-1-56700-473-1
International Heat Transfer Conference 16
EXPERIMENTAL INVESTIGATION ON HIGH HEAT FLUX SPRAY COOLING USING WATER ON COATED AND STRUCTURED SURFACES
Аннотация
An experimental investigation on the open loop spray cooling is carried out on a heated circular copper surface of area 3.14 cm2 at mass flow rate of water 5.2 g/s. A multi-nozzle array with four nozzles is used in this experiment. The heated surface and the multi-nozzle array are housed in a confined steel chamber and the heated surface is vertically oriented for the gravity-assisted drainage of unevaporated liquid. The heat transfer performance is analyzed for the bare flat surface, hexagonal boron nitride (h-BN) coated surface and straight fin-structured surface. Compared to the bare surface, a maximum heat flux enhancement of 28.2% is achieved for h-BN coated surfaces at heat flux 354 W/cm2.