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Title: | Fabrication of Cu@G composite coatings and their pool boiling performance with R-134a and R-1234yf |
Authors: | Belgamwar, Sachin U. |
Keywords: | Mechanical Engineering SEM EDS Surface roughness Heat Transfer R-134a R-1234yf |
Issue Date: | Jan-2022 |
Publisher: | Taylor & Francis |
Abstract: | The present work explores the pool-boiling performance of refrigerants (R-134 and R-1234yf) on the plain Cu and graphene nanoplatelets (G) reinforced Cu matrix (Cu@G) composite coated heating surface. A two-step electrodeposition technique was employed to prepare microporous Cu@G composite coatings. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) studies confirmed the successful fabrication of microporous structure of Cu@G composite coatings. Surface profilometer investigation was done to know the surface roughness of prepared Cu@G composite coatings. Pool boiling experiments were carried out with increasing heat flux from 8.80 kW/m2 to 61.25 kW/m2 at a saturation temperature of 10°C. Test results of R-134 and R-1234yf were compared. The experimental results revealed that the heat transfer coefficients (HTCs) of R-134a were higher than R-1234yf for plain Cu and Cu@G composite coated heating surfaces. |
URI: | https://www.tandfonline.com/doi/full/10.1080/2374068X.2022.2033046 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12323 |
Appears in Collections: | Department of Mechanical engineering |
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