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Journal of Enhanced Heat Transfer
Factor de Impacto: 1.406 Factor de Impacto de 5 años: 1.075 SJR: 0.287 SNIP: 0.653 CiteScore™: 1.2

ISSN Imprimir: 1065-5131
ISSN En Línea: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v7.i4.50
pages 273-287

Evaporatively-cooled Condenser with Rotating Disks

Yunho Hwang
Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742-3035, U.S.A.
S. Imam Haider
Center for Environmental Energy Engineering (CEEE), Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
Brian Markey
Center for Environmental Energy Engineering (CEEE), Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
William Kopko
Center for Environmental Energy Engineering (CEEE), Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
Reinhard Radermacher
Center for Environmental Energy Engineering (CEEE), Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA

SINOPSIS

The utilization of evaporative cooling to improve the heat transfer and lower the condensing temperature for a residential heat pump is investigated experimentally. A novel bench-scale evaporative condenser is tested for its performance as a function of several parameters, and the design is optimized using the resulting data. Parallel air flow condenser configuration to two thin disks is examined. Moreover several turbulence enhancing devices are tested to improve the heat removal rate. The test data of the bench-scale condenser is then projected by computer simulation to design a full-scale condenser for a 9 kW residential air-conditioner application. A full-size prototype evaporative condenser with rotating disks was built and tested under the ASHRAE test conditions. The evaporative condenser showed a higher capacity by 1.8 to 8.1%, a higher COP by 13.5 to 21.6%, and a higher SEER by 14.5% than those of the baseline conventional air-coil unit.


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