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Article Dans Une Revue Journal of Central South University, Springer Année : 2014

Building dynamic thermal simulation of low-order multi-dimensional heat transfer

Y. Gao
  • Fonction : Auteur
R. Fan
  • Fonction : Auteur
Q.L. Zhang
  • Fonction : Auteur
Jean-Jacques Roux

Résumé

Multi-dimensional heat transfers modeling is crucial for building simulations of insulated buildings, which are widely used and have multi-dimensional heat transfers characteristics. For this work, state-model-reduction techniques were used to develop a reduced low-order model of multi-dimensional heat transfers. With hot box experiment of hollow block wall, heat flow relative errors between experiment and low-order model predication were less than 8% and the largest errors were less than 3%. Also, frequency responses of five typical walls, each with different thermal masses or insulation modes, the low-order model and the complete model showed that the low-order model results agree very well in the lower excitation frequency band with deviations appearing only at high frequency. Furthermore, low-order model was used on intersection thermal bridge of a floor slab and exterior wall. Results show that errors between the two models are very small. This low-order model could be coupled with most existing simulation software for different thermal mass envelope analyses to make up for differences between the multi-dimensional and one-dimensional models, simultaneously simplifying simulation calculations.
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Dates et versions

hal-00997126 , version 1 (27-05-2014)

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Citer

Y. Gao, R. Fan, Q.L. Zhang, Jean-Jacques Roux. Building dynamic thermal simulation of low-order multi-dimensional heat transfer. Journal of Central South University, Springer, 2014, 21 (1), pp.293-302. ⟨10.1007/s11771-014-1940-5⟩. ⟨hal-00997126⟩
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