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

Publikation: Bog/antologi/afhandling/rapportRapportForskning

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Resumé

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.
OriginalsprogEngelsk
Udgivelses stedAalborg
ForlagDepartment of Civil Engineering, Aalborg University
Antal sider25
StatusUdgivet - 2017
NavnDCE Technical reports
Nummer236
ISSN1901-726X

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Regenerators
Waste heat utilization
Sensitivity analysis
Heat exchangers
Geometry
Roofs
Ventilation
Friction
Fluids
Air
Hot Temperature

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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.",
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Regenerator heat exchanger – calculation of heat recovery efficiency and pressure loss : Different configuration sensitivity analysis. / Pomianowski, Michal Zbigniew; Heiselberg, Per Kvols.

Aalborg : Department of Civil Engineering, Aalborg University, 2017. 25 s. (DCE Technical reports; Nr. 236).

Publikation: Bog/antologi/afhandling/rapportRapportForskning

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Pomianowski MZ, Heiselberg PK. Regenerator heat exchanger – calculation of heat recovery efficiency and pressure loss: Different configuration sensitivity analysis. Aalborg: Department of Civil Engineering, Aalborg University, 2017. 25 s. (DCE Technical reports; Nr. 236).