TITLE:
Thermophysical Properties and Supercritical Heat Transfer Characteristics of R515A
AUTHORS:
Adnan Ibrahim, Peng Hu, Yiran Jiang, Farrukh Saleem, Ali Riaz, Yifang Dong, Lei Jia, Panpan Zhao
KEYWORDS:
Environmental Friendly Refrigerant, Supercritical Fluid R515A, Simulations, Heat Transfer Correlations, Shear-Stress Transport (SST) Model
JOURNAL NAME:
Natural Science,
Vol.13 No.6,
June
23,
2021
ABSTRACT: The
heat transfer of supercritical fluids is a vastly growing field, specifically
to find suitable alternative to replace
conventional R134a, which can be beneficial for climate change. A considerable
suggestion is R515A which possesses considerably lower global warming
potential. The present simulations are designed to study supercritical fluid
R515A under cooling conditions in horizontal position. The effect of pressure,
mass flux, heat flux and tube diameter were considered for horizontal tube in
the vicinity of pseudo critical temperature. Numerical investigations on heat transfer characteristics of supercritical
fluid R515A were performed using widely used shear-stress transport
(SST) model. Moreover, heat transfer correlations were developed and suggested to accurately predict Nusselt number within
10% accuracy. The simulation results showed about 3.98% average absolute
deviation.