Browse > Article
http://dx.doi.org/10.3795/KSME-B.2011.35.2.105

Analytical Study on the Heat Transfer Characteristics of a Spirally Coiled Circular Fin-Tube Evaporator Operated Under Non-Frosting Conditions  

Lee, Moo-Yeon (Dept. of Mechanical Engineering, Korea Univ.)
Kang, Tae-Hyung (Dept. of Mechanical Engineering, Korea Univ.)
Kim, Yong-Chan (Dept. of Mechanical Engineering, Korea Univ.)
Park, Jae-Jung (Research and Development Team, Korea Bundy Corporation.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.2, 2011 , pp. 105-112 More about this Journal
Abstract
The objective of this study is to predict the heat-transfer performance of a spirally coiled circular fin-tube evaporator in which either R134a or R600a was used; this heat-transfer performance was predicted by varying the mass flow rate, inlet air temperature, air flow rate, and tube thickness. Mean deviation for the analytical model from the measured data was ${\pm}8.3%$. Simulation results revealed that at a given mass flow rate, the heat-transfer rate of the evaporator using R600a was higher than that usingR134a because the enthalpy of the former is higher than that of the latter at the given conditions. The heat-transfer rate of both refrigerants increased with an increase in the air flow rate and inlet air temperature but decreased with an increase in the tube thickness.
Keywords
Heat Transfer; Spirally-Coiled Circular Fin-Tube; Evaporator; Tube-by-Tube;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 Kim, Y. and Kim, Y., 2005, "Heat Transfer Characteristics of Flat Plate Finned-tube Heat Exchangers with Large Fin Pitch," Int. J. of Refrigeration, Vol. 28, pp. 851-858.   DOI   ScienceOn
2 Lee, M., Kang, T. and Kim, Y., 2010, "Air-side Heat Transfer Characteristics of Spiral-type Circular Fintube Heat Exchangers," Int. J. of Refrigeration, Vol. 33, pp. 313-320.   DOI   ScienceOn
3 Yun, R., Kim, Y., Kim, S. and Choi, J. M., 2005, "Experimental Study on the Heat Transfer Characteristics of Spiral Fin-tube Heat Exchanger," Trans. of the SAREK, Vol. 17, No. 6, pp. 529-535.
4 Mon, M. S. and Gross, U., 2004, "Numerical Study of Fin-spacing Effects in Annular-finned Tube Heat Exchangers," Int. J. Heat Mass Transfer, Vol. 47, pp. 1953-1964.   DOI   ScienceOn
5 Chi, J., 1979, "A Computer Model HTPUMP for Simulation of Heat Pump Steady State Performance," NBS, Washington D.C.
6 Domanski, P. A., 1989, "EVSIM-An Evaporator Simulation Model Accounting for Refrigerant and One Dimensional Air Distribution," NISTIR 89-4133, NIST, Washington D.C.
7 Incropera, F. P. and Dewitt, D. P., 2003, "Fundamentals of Heat and Mass Transfer," 5th edition, John Wiley & Sons, pp. 139-477.
8 Gunger, K. E. and Winterton, R. H. S., 1986, "A General Correlation for Flow Boiling in Tubes and Annuli," Int. J. Heat and Mass Transfer, Vol. 29, No. 3, pp. 351-358.   DOI   ScienceOn
9 Friedel, L., 1979, "Improved Friction Pressure Drop Correlations for Horizontal and Vertical Two-Phase Pipe Flow," European Two-Phase Flow Group Meeting, Italy, Paper E2.
10 Kang, T., 2010, "Experimental and Analysis Study on the Heat Transfer Characteristics of a Spiral Fintube Evaporator under Non-frosting Conditions," Master Thesis, Korea University, Korea.
11 ASHRAE Handbook, Fundamentals, 2001, "Physical Properties of Secondary Coolants (BRINES)," pp. 21.1-21.12.
12 Lee, M., 2010, "Heat and Mass Transfer Characteristics of a Spirally-coiled Circular Fin-tube Heat Exchanger," Ph. D Thesis, Korea University, Korea.
13 Lee, M., Kim, S. O. and Kim, Y., 2007, "Performance Evaluations of a Residential Small Multi-Refrigeration System Considering the Adiabatic Characteristics," Trans. of the KSME, Vol. 31, No. 10, pp. 868-875.   과학기술학회마을   DOI   ScienceOn
14 Lee, M., Lee, H., Jang, Y. and Kim, Y., 2008, "Numerical Analysis on the Frosting Performance of a Fin-tube Evaporator Used in a Refrigerator," Trans. of the KSME, Vol. 32, No. 4, pp. 307-316.