Abstract
Experimental investigation on the R134-a spray cooling characteristics is presented in a closed loop system. A full-cone nozzle was applied to spray onto a heated circular copper plate. The characteristics of the R134-a spray cooling under a series of different volumetric flow rate were obtained. The results shown that volumetric flow rate improves the critical heat flux (CHF). And larger volumetric flow rate prevent the dry-out phenomenon under high heat flux. However, volumetric flow rate bring the adverse condition that reduces the system efficiency. The maximum CHF of 117.2Wcm-2 was achieved with 319K target surface temperature at 0.356Lmin-1. The results indicate that R134-a owns a great cooling characteristics in spray cooling system.
| Original language | English |
|---|---|
| Pages (from-to) | 194-200 |
| Number of pages | 7 |
| Journal | Experimental Thermal and Fluid Science |
| Volume | 61 |
| DOIs | |
| State | Published - 1 Feb 2015 |
Keywords
- Closed loop
- Critical heat flux
- Heat transfer
- Spray cooling
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