Regenerator heat exchanger – calculation of heat recovery efficiency and pressure loss: Different configuration sensitivity analysis

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Abstract

Performance of heat exchangers is determined based on two main parameters: efficiency to exchange / recover heat and pressure loss due to friction between fluid and exchanger surfaces.

These two parameters are contradicting each other which mean that the higher is efficiency the higher becomes pressure loss. The aim of the optimized design of heat exchanger is to reach the highest or the required heat efficiency and at the same time to keep pressure losses as low as possible keeping total exchanger size within acceptable size.

In this report is presented analytical calculation method to calculate efficiency and pressure loss in the regenerator heat exchanger with a fixed matrix that will be used in the decentralized ventilation unit combined in the roof window. Moreover, this study presents sensitivity study of regenerator heat exchanger performance, taking into account, such parameters as: geometry, matrix material, surface geometry, shifting time, air flow.
Original languageEnglish
Place of PublicationAalborg
PublisherDepartment of Civil Engineering, Aalborg University
Number of pages25
Publication statusPublished - 2017
SeriesDCE Technical reports
Number236
ISSN1901-726X

Keywords

  • Regenerator heat exchanger
  • Heat exchanger
  • Efficiency
  • Pressure loss

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