... tension gradients [ 53 ] and the contact line motion due to evaporation (receding) and replenishing (advancing) [ 26 ] may increase the heat transfer resulting in higher h film as seen in Fig. 17 . Spray cooling experiments with 33 μm droplet diameter impacting small copper hot substrates were...

... to be on the order of 1–10 eV, and the applied heat flux is on the order of GW/m 2 . Spray cooling on the macroscale can achieve high heat transfer rates [( 1 )] and therefore appears to offer a good balance of high heat flux removal capability, isothermality, and fluid inventory. Spray cooling is useful...

...Bahman Abbasi; Jungho Kim Spray cooling heat transfer measurements of PF-5060 on smooth flat surfaces were obtained using a microheater array operated at constant temperatures using two nozzles (hollow cone and full cone), three nozzle-to-heater standoff distances (3, 5, and 7 mm), four nozzle...

...Bahman Abbasi; Jungho Kim One of the main challenges of spray cooling technology is the prediction of local and average heat transfer coefficients on the heater surface. It is hypothesized that the local heat transfer coefficient can be predicted from the local normal pressure produced by the spray...

...Suranjan Sarkar; R. Panneer Selvam Thermal management issues have become a major bottleneck for further miniaturization and increased power consumption of electronics. Power electronics require more increasing use of high heat flux cooling technologies. Spray cooling with phase change has...

...A. R. Griffin; A. Vijayakumar; R.-H. Chen; K. B. Sundaram; L. C. Chow A heater designed to monitor surface temperature fluctuations during pool boiling and spray cooling experiments while the bubbles are simultaneously being observed has been fabricated and tested. The heat source was a transparent...

...Ruey-Hung Chen; David S. Tan; Kuo-Chi Lin; Louis C. Chow; Alison R. Griffin; Daniel P. Rini Droplet and bubble dynamics and nucleate heat transfer in saturated FC-72 spray cooling were studied using a simulation model. The spray cooling system simulated consists of three droplet fluxes impinging...

.... boiling cooling drops evaporation two-phase flow two phase heat transfer evaporative cooling spray cooling droplet evaporation Nucleate boiling of a liquid on a heated surface is known to be a very effective technique for dissipating a large amount of heat at moderate temperature...

... fins, to the heated surface. In the current work, spray cooling of high-aspect-ratio open microchannels was explored, which substantially increases the total surface area and allows more residence time for the incoming liquid to be heated by the wall. Five such heat sinks were constructed...