Author(s)

Adnan Ibrahim¹, Peng Hu¹, Yiran Jiang¹, Farrukh Saleem², Ali Riaz³, Yifang Dong², Lei Jia⁴, Panpan Zhao⁴

¹Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, China.
²School of Engineering Science, University of Science and Technology of China, Hefei, China.
³Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan.
⁴Hefei General Machinery Research Institute Co., Ltd., Hefei, China.

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.

Environmental Friendly Refrigerant, Supercritical Fluid R515A, Simulations, Heat Transfer Correlations, Shear-Stress Transport (SST) Model

Ibrahim, A. , Hu, P. , Jiang, Y. , Saleem, F. , Riaz, A. , Dong, Y. , Jia, L. and Zhao, P. (2021) Thermophysical Properties and Supercritical Heat Transfer Characteristics of R515A. Natural Science, 13, 218-234. doi: 10.4236/ns.2021.136019.