Investigations of pool boiling heat transfer of binary refrigerant mixtures
- Teco Electric and Machinery Co., Ltd., Tao-Yuan (Taiwan, Province of China)
- National Chiao Tung Univ., Hsinchu (Taiwan, Province of China). Dept. of Mechanical Engineering
- Industrial Technology Research Inst., Hsinchu (Taiwan, Province of China). Energy and Research Labs.
Pool boiling data for binary mixtures of R-22/R-124 on plain tubes are reported at reduced pressures of 0.1, 0.15, and 0.2. Significant reductions of heat transfer coefficients for mixtures are found as compared to pure refrigerant, and the reduction of heat transfer coefficient is especially pronounced in the vicinity of the pure component. This phenomenon is strongly related to the nonlinear variation of physical properties of liquid viscosity and latent heat of the mixtures. The available empirical and semiempirical correlations developed for mixtures are compared with the present data. In addition, a correlation based on the present R-22/R-124 experimental data is proposed. This correlation not only predicts the deterioration of heat transfer coefficients for the present data with success but also predicts the experimental data from other investigators with reasonably good accuracy.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 538146
- Journal Information:
- Heat Transfer Engineering, Journal Name: Heat Transfer Engineering Journal Issue: 3 Vol. 18; ISSN HTEND2; ISSN 0145-7632
- Country of Publication:
- United States
- Language:
- English
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