Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
권호 표지

Slim Air-Conditioner with Parallel Flow Heat Exchangers for Cooling of Telecommunication Cabinet

평행류 열교환기가 적용된 무선통신 중계기 냉각용 슬림형 공조기

  • Cho, J.P. (Department of Mechanical Engineering, University of Incheon) ;
  • Kim, N.H. (Department of Mechanical Engineering, University of Incheon)
  • Published : 2009.02.10
Download PDF
⟨ Previous Next ⟩

Abstract

Slim telecommunication cabinet cooler, equipped with parallel flow heat exchangers and operating with R-22, is developed. The performance is compared with imported one, equipped with fin-tube heat exchangers and operating with R-134a. Test results show that the newly-developed cooler increases the cooling capacity by 6% and EER by 33%. The refrigerant charge for the developed cooler is 500g compared with 1250g for the imported one. The adoption of parallel flow heat exchanger appears to have reduced the refrigerant charge. In addition, it is shown that the reduced air flow rates through parallel heat exchangers as compared with those through fin-tube heat exchangers are beneficial to the reduction of the equipment noise.

Keywords

References

  1. Schmidt, R. R. and Shaukatullah, 2003, Computer and telecommunications equipment room cooling : a review of literature, IEEE Transactions on components and packaging technologies, Vol. 26, No. 1, pp. 89-98 https://doi.org/10.1109/TCAPT.2003.811482
  2. Kang, I. S., Choi, D. K. and Kim, T. Y., 2004, The experimental study on the performance of two-phase loop thermosyphon system for electronic equipment cooling, Trans, B, KSME, Vol. 28, No. 4, pp. 415-424
  3. Jeon, J., Kim, Y., Choi, J. M., Hyun, D. S. and Yun, L., 2007, Performance characteristics of liquid cooling heat exchangers with MPCM slurry designed for telecommunication equipment, Korean J. Air-Conditioning Refrigeration Engineering, Vol. 19, No. 10, pp. 710-717
  4. Kim, Y., Choi, J. M., Kang, H., Yoon, J., Kim, Y., Lee, H. and Choi, K., 2006, Performance characteristics of a hybrid air-conditioner for telecommunication equipment rooms, Korean J. Air-Conditioning Refrigeration Engineering, Vol. 18, No. 11, pp. 874-880
  5. Webb, R. L. and Jung, S. H., 1992, Air-side performance of enhanced brazed aluminum heat exchangers, ASHRAE Trans, Vol. 98, Pt. 2, pp. 391-410
  6. Cho, J. P., Choi, Y. H., Kim, N. H., and Kim, J. H., 1999, Performance evaluation of PF-condenser adapted to package air-conditioner, Proceedings of the SAREK 1999 Winter Annual Conference, pp. 46-51
  7. Cho, J. P., Choi, Y. H., Kim, J. H., Kim, N. H. and Kim, J. H., 2000, Performance evaluation of PF-condenser adapted to large size air-conditioner, Proceedings of the KSME 2000 Spring Annual Conference. Vol. 1, No. 2, pp. 1-6
  8. KS C 9306 (2002) Air conditioner
  9. ASHRAE Standard 41.2, 1986, Standard method for laboratory air-flow measurement, ASHRAE
  10. ASHRAE Standard 41.1, 1986, Standard method for temperature measurement, ASHRAE
  11. ANSI/ASHRAE Standard 37, 2005, Standard measurement guide, engineering analysis of experimental data, ASHRAE