Abstract
ABSTRACTBoiling heat transfer enhancement is influenced by the surface distinctiveness of the boiling region. Porous surface is being widely used to enhance boiling heat transfer in the industry. An experimental study is carried out to investigate the characteristics of the pool boiling heat transfer for different fluid, namely, pure refrigerant (R-134a) and quasi-azeotropic mixture (R-410A). The test is performed on a thin porous layer over a copper tube placed horizontal at saturation temperature of 7°C and also to determine its potential application to flooded refrigerant evaporators. The diameter of the coated tube was 25.4 mm, a length of 116 mm. A coated tube had a porous layer thickness of 42.2 µm. In the experimental range (5 to 50 kWm−2) the boiling heat transfer coefficients are 1.25 to 2 times higher than those of the uncoated surface. For boiling within the porous surface, simplified predicted equations of various investigators are analyzed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
