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Comparative analysis of experimental vs. theoretical thermal performances of a single phase flow minichannel heat exchanger.

Number: pap. 939

Author(s) : DUMITRESCU R., ILIE A.

Summary

This paper presents experimental results concerning thermal performances of a mini-channel heat exchanger (hydraulic diameter of 1.54mm) of domestic make, in single phase water flow. Such heat exchangers may be used in air handling units in air-conditioning systems, as an alternative to classical heat exchangers represented by fan coils. The heat exchanger was tested in an experimental set-up, of loop type and worked as an air heater. By design, the experimental stand allowed testing under steady state conditions for both air and water inlet parameters. Heating capacity of the minichannel heat exchanger on both air and water side has been measured. The experimental results have been validated by heating capacity calculations on both working fluids side showing relative errors of approximately 8% on average. The final part of the paper presents a comparative analysis of experimental and theoretical values of the convective heat transfer coefficient on water side, based on different recommended correlations for single phase flow minichannels. The study concluded that Peng et al. and Adams et al., (1994) correlations covered best the experimental results.

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Pages: 10 p.

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Details

  • Original title: Comparative analysis of experimental vs. theoretical thermal performances of a single phase flow minichannel heat exchanger.
  • Record ID : 30010393
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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