Experimental Study on Two-Stage Cascade Low Temperature Pre-Cooling Equipment

Abstract:

A two-stage cascade pre-cooling test bed was designed and set up to develop a -30°C /-60°C pre-cooling equipment. An internal heater exchanger and a condenser were set in low-temperature cycle. Theoretically the two stages can work stably at setting temperature and the low-temperature cycle can operate independently with aided starting of the high-temperature cycle. The experimental results indicate that the test bed can provide cooling capacity steadily at -46°C and -100°C respectively and the low-temperature cycle cannot operate alone for compressor overload protection. Based on the analysis, the possible reasons and detailed suggestions were put forward.

• Periodical: Applied Mechanics and Materials (Volume 42)
• Pages: 322-325
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.42.322
• Online since: November 2010
• Authors: Xiu Fang Liu, Fa Hui Wang, Fan Mao Meng
• Keywords: Experimental Study, Pre-Cooling, Regenerator, Two-Stage Cascade

References

[1] K. Du and K. M. Liao: Cryogenics, ( 2002) No. 3, pp.29-33.

[2] M.Q. Gong, E.C. Luo and Y. Zhou: Cryogenics, (2000) No. 2, pp.24-29.

[3] R.H. Han: Journal of Refrigeration, (1999) No. 4, pp.59-61.

[4] J. Lei: Study on Movable Cryosurgery (MA, Zhejiang University, China, 2007), pp.3-5.

[5] N.Y. Ren, J. Yan and W. Qian etc: Refrigeration and Air-conditioning, ( 2006)No. 6, pp.5-8.