Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Useful Energy Transfer in Air-to-air Heat Recovery Units in Partly Heated Low Energy Buildings

Willem Faes
1* , Hugo Monteyne 1 , Jelle Laverge 2 , Michel De Paepe 1 1 Department of Flow, Heat and Combustion Mechanics, Ghent University, Ghent, Belgium 2 Department of Architecture and Urban Planning, Ghent University, Ghent, Belgium *

Abstract: In this study, the performance of ventilation systems with heat recovery in residential buildings with a low energy demand for heating was evaluated. In a completely heated building, the percentage of useful recovered heat will be equal to the nominal effectiveness of the heat exchanger. In the case some rooms are not heated, they will still receive preheated air. This part of the recovered heat will not directly increase comfort, so it does not completely contribute to the energy savings of the building. Simulations were done with TRNSYS to assess the percentage of usefully recovered heat. This value was found to be lower than the nominal effectiveness, but varying with several parameters.
Pages: 2701 - 2707