FLOW BOILING BEHAVIORS OF VARIOUS REFRIGERANTS INSIDE HORIZONTAL TUBES: A COMPARATIVE RESEARCH STUDY

Authors : Oğuz Emrah TURGUT, Mustafa ASKER

Pages : 1-20

Doi:10.18038/estubtda.749040

View : 20 | Download : 14

Publication Date : 2022-03-30

Article Type : Research Paper

Abstract :In this study, convective boiling behaviors of refrigerants insert ignore into journalissuearticles values(R22, R134a, R290, R404a, R410a, R600, R507, R717, and R744); are compared with existing flow boiling correlations. Flow boiling heat transfer rates under the primary influences of vapor quality and mass flux are plotted and compared with the experimental results that are extracted from the literature. A statistical approach is introduced for error analysis and a valid correlation is proposed for each refrigerant. Correlation of Wojtan et al. with 30% of experimental data in 20% error region is selected as the best correlation while Shah Correlation with 10% of experimental data in 20% error regions performs the worst. The result of the analysis indicates that flow boiling heat transfer values are strongly dependent upon mass velocity and heat flux. It is observed that existing correlations are in good agreement with experimental works at low heat flux rates whereas deviations are getting bigger for high heat flux rates.
Keywords : Flow Boiling, Horizontal tubes, Refrigerants