[1] Chen Jiufa,. Comprehensive approach to predicting the circulation composition of zeotropic refrigerants [J]. Journal of Southeast University (English Edition), 2004, 20 (3): 315-318. [doi:10.3969/j.issn.1003-7985.2004.03.010]
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Comprehensive approach to predicting the circulation composition of zeotropic refrigerants(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 20
- Issue:
- 2004 3
- Page:
- 315-318
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2004-09-30
Info
- Title:
- Comprehensive approach to predicting the circulation composition of zeotropic refrigerants
- Author(s):
- Chen Jiufa
- Department of Power Engineering, Southeast University, Nanjing 210096, China
- PACS:
- TB61
- DOI:
- 10.3969/j.issn.1003-7985.2004.03.010
- Abstract:
- The problem of composition shift in zeotropic fluid circulation, which is encountered in modern air conditioning and refrigeration systems, is studied. It reveals that the composition shift phenomena is contributed by fractionation related to four mechanisms. This paper concentrates on the modeling of component fractionation in heat exchangers. Element approach is employed, and the amount of each component holdup is calculated element by element with a proper void fraction model. The circulation concentration is determined from the refrigerant differential holdup in heat exchangers. Simulations have been carried out to prove the validity. The results can improve the reliability and efficiency in zeotropic refrigerant applications.
References:
[1]Johansson A, Lundqvist P. A method to estimate the circulated composition in refrigeration and heat pump systems using zeotropic refrigerant mixtures [J]. International Journal of Refrigeration, 2001, 24(8): 798-808.
[2]Rajapaksha L, Suen K O. Influence of reversing methods on the performance of a reversible water-to-water heat pump [J]. Applied Thermal Engineering, 2003, 23(1): 49-64.
[3]Castle T P, Richardson R N, Ritter T J. Thermostatic valve control using a non-azeotropic refrigerant, isobutane/propane mixture [J]. International Journal of Refrigeration, 1999, 22(4): 313-318.
[4]McMullan J T, Hewitt N J, McNerlin M G, et al. Component separation in refrigerant equipment using HFC mixtures [J]. Fluid Phase Equilibria, 2000, 174(1,2): 133-141.
[5]Judge J, Radermacher R. A transient and steady state study of pure and mixed refrigerants in a residential heat pump [R]. USA, EPA/600/SR-96/129, 1996.
[6]Huphmark G A. Holdup in gas-liquid flow [J]. Chemical Engineering Progress, 1962, 58(4): 6265.
[7]Youbi-Idrissi M, Bonjour J, Marvillet C, et al. Impact of refrigerant-oil solubility on an evaporator performances working with R-407C [J]. International Journal of Refrigeration, 2003, 26(3): 284-292.
Memo
- Memo:
- Biography: Chen Jiufa(1959—), male, PhD, professor, j_chen99@fescomail.net.