Browse > Article
http://dx.doi.org/10.5916/jkosme.2011.35.2.182

Development of Cascade Refrigeration System Using R744 and R404A - Analysis on Performance Characteristics -  

Oh, Hoo-Kyu (부경대학교 냉동공조공학과)
Son, Chang-Hyo (부경대학교 냉동공조공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.35, no.2, 2011 , pp. 182-188 More about this Journal
Abstract
In this paper, analysis on the performance characteristics of R744-R404A cascade refrigeration system is presented to offer the basic design data for the operating parameters of the system. The operating parameters considered in this study include subcooling and superheating degree, compressor efficiency, and condensing and evaporating temperature in R404A high- and R744 low-temperature cycle, respectively. The main results were summarized as follows : It was observed that the highest COP of the system is achieved by higher superheating degree in R744 cycle than that in R404A cycle. The COP of the system increased by giving the subcooling degree in both cycles. The COP of the cascade system is the highest value when the system is operated at an optimum evaporation temperature.
Keywords
Carbon dioxide; Cascade refrigeration system; Vapor compression refrigeration system; Performance analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bansal, P. K. and Jain, S., "Cascade systems: past, present, and future", ASHRAE Trans. vol. 113, no. 1, pp. 245-252, 2007.
2 EES: Engineering Equation Solver, fChart Software Inc., 2006.
3 Getu, H. M. and Bansal, P. K., "Thermodynamic analysis of an R744-R717 cascade refrigeration system", International journal of refrigeration. 31, pp. 45-54, 2008.   DOI   ScienceOn
4 Nicola, G. D., Giuliani, G., Polonara, F., and Stryjek, R., "Blends of acrbon dioxide and HFCs as working fluids for the low-temperature circuit in cascade refrigerating systems", International journal of refrigeration, vol 28, pp. 45-54, 2008.
5 Lee, T. S., Liu, C. H. and Chen, T. W., "Thermodynamic analysis of optimal condensing temperature of cascade condenser in $CO_2/NH_3$ cascade refrigeration systems". Int. J. Refrigeration 29, pp. 1100-1108, 2006.   DOI   ScienceOn
6 Bhattacharyya, S., Mukhopadhyay, S., Kumar, A. and Khurana, R. K., Sarkar, J., "Optimization of a CO2-C3H8 cascade system for refrigeration and heating", Int. J. Refrigeration 28, pp. 1284-1292, 2005.   DOI   ScienceOn