Membrane energy exchangers, evaluation of a frost-free design and its performance for ventilation in cold climates
Authors: Publication Year: 2015


A frost-free membrane energy exchanger design model is developed combining the conventional ε−NTU method with a frost limit model. A concept of plate performance index is defined to evaluate the net energy saving ability. The frost-free design model and plate performance index are employed for a case study of single-family dwelling with an all-fresh-air air handling unit with a heat/energy recovery exchanger. The membrane energy exchanger, which is able to ensure frost-free operation without extra frost control strategies, is applicable to most cold climates for residential applications. The membrane energy exchanger has a significant energy saving potential compared to conventional plate heat exchangers. Preheating rather than enlarging the energy transfer area is recommended for severe cold climates.

Additional Info

  • WP: Energy supply systems and services
  • Publication Year: 2015
  • Pages: PaperID: 254
  • Name of proceedings: Proceedings of 24th International Congress of Refrigeration (ICR2015)
  • Name of conference: 24th International Congress of Refrigeration (ICR2015)
  • Town: Yokohama
  • Country: Japan
  • Date from: søndag, 16 august 2015
  • Date to: lørdag, 22 august 2015
  • Type: Report

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