Browse > Article
http://dx.doi.org/10.6110/KJACR.2014.26.4.193

Heat Transfer Performance Variation of Condenser due to Non-uniform Air Flow  

Lee, Won-Jong (School of Mechanical Engineering, Pusan National University)
Jeong, Ji Hwan (School of Mechanical Engineering, Pusan National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.4, 2014 , pp. 193-198 More about this Journal
Abstract
Heat transfer performance variation of a condenser caused by non-uniform distribution of air flow was investigated using a numerical simulation method. A heat exchanger used for a outdoor unit of a commercial heat pump system and represented by a numerical model was selected. Non-uniform profile of air-velocity was constructed by measuring the air velocity at various locations of the outdoor unit. Simulation was conducted for various refrigerant circuits and air flow conditions. Simulation results show that the heat transfer capacity was reduced depending on the air-flow rate and the refrigerant circuit configuration. It is also shown that the capacity reduction rate is increased as the average air velocity decreases.
Keywords
Condenser; Air flow non-uniform distribution; Thermal resistance; Heat transfer performance;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Mao, J. N., Chen, H. X., Jia, H., and Wang, Y. Z., 2013, Effect of air-side flow maldistribution on thermal-hydraulic performance of the multi-louvered fin and tube heat exchanger, International Journal of Thermal Sciences, Vol. 73, pp. 46-57.   DOI   ScienceOn
2 Nair, S., Verma, S., and Dhingra, S. C., 1998, Rotary heat exchanger performance with axial heat dispersion, International Journal of Heat and Mass Transfer, Vol. 41, pp. 2857-2864.   DOI   ScienceOn
3 Lee, K. and Oh, S., 2004, Optimal shape of the multi-passage branching system in a single-phase parallelflow heat exchanger, International Journal of Refrigeration, Vol. 27, pp. 82-88.   DOI   ScienceOn
4 Timoney, D. J. and Foley, P. J., 1994, Some effects of air flow maldistribution on performance of a compact evaporator with R134a, Heat Recovery Systems and CHP, Vol. 14, No. 5, pp. 517-523.   DOI   ScienceOn
5 Jianying, G., Tieyu, G., Xiuling, Y., and Dong, H., 2008, Effects of air flow maldistribution on refrigeration system dynamics of an air source heat pump chiller under frosting conditions, Energy Conversion and Management, Vol. 49, pp. 1645-1651.   DOI   ScienceOn
6 Aganda, A. A., Coney, J. E. R., and Sheppard, C. G. W., 2000, Airflow maldistribution and the performance of a packaged air conditioning unit evaporator, Applied Thermal Engineering, Vol. 20, pp. 515-528.   DOI   ScienceOn
7 Chang, Y. J. and Wang, C. H., 1997, A generalized heat transfer correlation for louver fin geometry, Int. J. Heat Mass Transfer, Vol. 40, No. 3, pp. 533-544.   DOI   ScienceOn