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Influence of condensation on the efficiency of regenerative heat exchanger for ventilation.

Author(s) : NIZOVTSEV M. I., BORODULIN V. Y., LETUSHKO V. N.

Type of article: Article

Summary

The paper presents a physical and mathematical model for calculating the air-to-air heat exchanger with periodically changing direction of the air flow. It accounts for vaporization and condensation on the channel walls of the heat exchange matrix with regular structure as well as possible formation of water fog directly in the air flow. The model can be used to analyze the influence of operating parameters, the geometric dimensions of the channels and properties of the used materials on the work efficiency of the heat exchanger. The results of calculations of the influence of indoor air humidity on heat and moisture transfer processes in the regenerative heat exchanger are provided. Sensible and latent efficiency of the regenerative heat exchanger as well as their dependence on relative humidity of indoor air are determined. The relationship between the outdoor air temperature and relative humidity of indoor air, at which ice formation begins in the channels of the heat exchange matrix, is found.

Details

  • Original title: Influence of condensation on the efficiency of regenerative heat exchanger for ventilation.
  • Record ID : 30020937
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 111
  • Publication date: 2017/01/25
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2016.10.016

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