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TECHNICAL PAPERS

Performance Evaluation of a Window Room Air Conditioner With Microchannel Condensers

[+] Author and Article Information
Man-Hoe Kim

Clark W. Bullard

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Energy Resour. Technol 124(1), 47-55 (Mar 25, 2002) (9 pages) doi:10.1115/1.1446072 History: Received June 06, 2000; Revised November 27, 2001; Online March 25, 2002
Copyright © 2002 by ASME
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References

Rosenquist,  G., 1999, “Window-Type Room Air Conditioners,” ASHRAE J., 41, No. 1, pp. 31–35.
Shah, R. K., 1978, “Compact Heat Exchanger Surface Selection Methods,” Proc. 6th Int. Heat Transfer Conference, Toronto, 4 , pp. 193–199.
Cowell,  T. A., 1990, “A General Method for the Comparison of Compact Heat Transfer Surface,” J. Heat Transfer, 112, pp. 288–294.
DeJong,  N. C., and Jacobi,  A. M., 1997, “An Experimental Study of Flow and Heat transfer in Parallel-Plate Arrays,” Int. J. Heat Mass Transf., 40, No. 6, pp. 1365–1378.
Kim,  N. H., Youn,  B., and Webb,  R. L., 1999, “Air-Side Heat Transfer and Friction Correlations for Plain Fin-and-Tube Heat Exchangers With Staggered Tube Arrangements,” J. Heat Transfer, 121, pp. 662–667.
Kang,  H. C., and Kim,  M. H., 1999, “Effect of Strip Location on the Air-Side Pressure Drop and Heat Transfer in Strip Fin-and-Tube Heat Exchanger,” Int. J. Refrig., 22, pp. 302–312.
Webb,  R. L., and Jung,  S.-H., 1992, “Air-Side Performance of Enhanced Brazed Aluminum Heat Exchangers,” ASHRAE Trans., 98, Pt. 2, pp. 391–401.
Critoph,  R. E., Holland,  M. K., and Tyrner,  L., 1996, “Contact Resistance in Air-Cooled Plate Fin-Tube Air-conditioning Condensers,” Int. J. Refrig., 19, No. 6, pp. 400–406.
Rugh, J. P., Pearson, J. T., and Ramadhyani, S., 1992, “A Study of a Very Compact Heat Exchanger Used for Passenger Compartment Heating in Automobiles,” Symposium Series, ASME HTD-Vol. 201, pp. 15–24.
Chang, Y. J., Wang, C. C., Shyu, R. J., and Hu, Y. Z., 1995, “Performance Comparison Between Automotive Flat Tube Condenser and Round Tube Condenser,” ASME/JSME Thermal Engineering Conference, 4 , pp. 331–336.
Kirkwood, A. C. and Bullard, C. W., 1999, “Modeling, Design, Testing of a Microchannel Split-System Air Conditioner,” ACRC TR-49, University of Illinois at Urbana-Champaign.
ANSI/ASHRAE Standard 41.1-1986 (RA 91), 1991, Standard Method for Temperature Measurement, ASHRAE, Atlanta, GA.
Youn,  B., Kim,  Y. S., and Park,  H. Y., 1996, “Performance Evaluation of Cross Flow Fin-Tube Heat Exchangers,” Air Conditioning and Refrigeration, The Society of Air-Conditioning and Refrigerating Engineers of Korea (SAREK), 25, No. 2, pp. 151–160.
Domanski, P. A., 1982, “Computer Modeling and Prediction of Performance of an Air Source Heat Pump with a Capillary Tube,” Ph.D. thesis, The Catholic University of America, Washington, DC.
Kim,  M.-H., and Bullard,  C. W., 2002, “Air-Side Thermal Hydraulic Performance of Multi-Louvered Fin Aluminum Heat Exchangers,” Int. J. Refrig., 25, No. 3, pp. 413–423.
Mulroy,  W. J., and Didion,  D. A., 1985, “Refrigeration Migration in a Split-Unit Air Conditioner,” ASHRAE Trans., 91, Part 1A, pp. 193–206.
Tanaka,  N., Ikekuchi,  M., and Yamanaka,  G., 1982, “Experimental Study on the Dynamic Characteristics of a Heat Pump,” ASHRAE Trans., 88, Pt. 2, pp. 323–331.
Kim,  M.-H., and Bullard,  C. W., 2001, “Dynamic Characteristics of a R410A Split Air Conditioning System,” Int. J. Refrig., 24, pp. 652–659.

Figures

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Schematic diagram of heat exchanger test apparatus
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Definition of geometric parameters for a microchannel heat exchanger
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Cross section of louvered fin geometry
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Schematics of fin geometries for finned-tube heat exchangers (unit:mm)—(a) FT1, (b) FT3
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Circuiting configurations of finned-tube heat exchangers—(a) FT1, (b) FT2, (c) FT3, (d) FT4
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Comparisons of thermal-hydraulic performance for different heat exchangers—(a) heat transfer rates per unit core volume; (b) refrigerant mass flow rates; (c) air-side pressure drops; (d) refrigerant-side pressure drops
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System performance versus refrigerant charge (all the data points are compared to the baseline system with a refrigerant charge of 900 g)—(a) cooling capacity; (b) compressor power; (c) energy efficiency ratio
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Comparison of overall system performance
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System characteristics for different condensers with refrigerant charge—(a) suction temperatures and pressures; (b) condenser inlet and outlet temperatures
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Comparison of cycle characteristics for the system with different condensers

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