Development of New Cooling System using Nacelle Duct

In this paper, a new cooling system using a nacelle duct is proposed for the mechanical room in the household refrigerator. The conventional mechanical room consists of a condenser, a compressor and an axial fan. The axial fan is mainly responsible for cooling the condenser and the compressor. The new cooling system is developed by replacing the axial fan with the nacelle duct including the small centrifugal fan. The parametric study is carried out to find the optimum designs of the nacelle duct in terms of performance and efficiency. Through this study, it is revealed that the new system can reduce the space, electrical power and noise compared with the conventional system




References:
[1] J. Y. Kim, S. H. Kim, T. H. Kim, S. M. Kwak, D. S. Jang, Y. H. Lee, Y. W.
Lee, "Characteristics of Heat Flow in a Machine Room of Refrigerator,"
Journal of The Korean Society for Power System Engineering, pp. 15-354,
2001.
[2] OKABE MASUMI, HONJO SHIGERU, "FAN," Japan Patent,
55-071979 (1980)
[3] B. Y. Han, Y. K. Kim, T. H. Kim and Y. W. Lee, "Optimization of
Refrigerator Machine Room for Energy Saving," Journal of The Korean
Society for Power System Engineering, pp. 73-77, 2005.
[4] Seungyub Lee, SeungHeo and Cheolung Cheong, "Prediction and
reduction of internal blade-passing frequency noise of the centrifugal fan
in a refrigerator," International Journal of Refrigeration, Volume 33, Issue
6, September 2010, Pages 1129-1141
[5] SeungHeo, Cheolung Cheong, Tae-Hoon Kim, "Development Of
Low-Noise Centrifugal Fans For A Refrigerator Using Inclined S-Shaped
Trailing Edge," International Journal of Refrigeration 34 (2011), pp.
2076-2091