Extended model for control of thermal energy in buildings

Ashish Bhattarai
University of South-Eastern Norway, Porsgrunn, Norway

Zahir Barahmand
University of South-Eastern Norway, Porsgrunn, Norway

Sina Orangi
University of South-Eastern Norway, Porsgrunn, Norway

Bernt Lie
University of South-Eastern Norway, Porsgrunn, Norway

Ladda ner artikelhttps://doi.org/10.3384/ecp2017615

Ingår i: Proceedings of The 61st SIMS Conference on Simulation and Modelling SIMS 2020, September 22-24, Virtual Conference, Finland

Linköping Electronic Conference Proceedings 176:3, s. 15-22

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Publicerad: 2021-03-03

ISBN: 978-91-7929-731-2

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


The paper extends a previous model of a heated water system with stratification, with an external floor heating circulation loop and a detailed model of heat transfer from water pipe to heated room. A minor error in the previous stratification model is corrected. The floor heating loop is posed as a cross-current heat exchanger, and a simple approximation of time delay for heat advection is suggested. For heat flow to the room, infinitely fast heating of an aluminum plate is suggested, with slower heat transfer to chip-board, through fiberboard and parquet to the room. The room is heated by a combination of convection and radiation. The results show that the inclusion of the heat circulation loop shows that this has an important effect on the dynamics of the system, and that this loop should be taken into account if parameters are tuned to fit the model to experimental data.


floor heating, energy in buildings, energy storage, hot water tank model, water distribution system, stratified ?ow model


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