Adiabatic and diabatic measurements of the liquid film thickness during spray cooling with FC-72

Local heat transfer coefficients in spray cooling systems measured with temperature oscillation IR thermography

“…Visualization of the nozzles spraying onto a transparent surface gives support for this theory. Pautsch and Shedd identified two important regions in the four nozzle arrays tested, the spray impact region and the spray interaction/draining region [21], and they theorized that the heat transfer performance is vastly different between these two regions due to a loss of fluid momentum when droplets from neighboring nozzles collide. The results of the TOIRT experiment further support this theory.…”

Analysis of evaporating mist flow for enhanced convective heat transfer

“…Of particular importance are phase change-based liquid cooling techniques, which may dissipate even larger heat fluxes than singlephase liquid cooling approaches. For instance, liquid spray cooling has received significant research attention as a high-heat-flux thermal management technology [2][3][4][5][6][7]. Mist impingement cooling is a variant of spray cooling wherein a two-phase mixture of finely dispersed liquid droplets in air is sprayed onto a hot surface [8][9][10][11][12][13][14].…”

Spray Cooling With HFC-134a and HFO-1234yf for Thermal Management of Automotive Power Electronics

“…Mudawar et al [17] in the year 1996 experimented with FC-72 as working fluid which is a dielectric liquid and found that it can remove heat flux nearly of 1 MW/m2. Pautsch et al [18] in the year 2006 found one of the parameter that effect the spray cooling performance was thickness of the liquid film layer that exits on the heater surface. In general, this thickness will be the size of 0 to 90 microns.…”

“…In the year 2006, Pautsch et al [21] experimented the liquid film using the low flowrate for the single nozzle and also for high liquid flow rate using the multiple nozzles (four nozzles).…”