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Published in:
2020 | OriginalPaper | Chapter
Development and Experimental Validation of a Finite-Difference Frequency-Domain Model for the Exhaust Air Insulation Wall
Authors : Liao Li, Chong Zhang, Jiaqi Hu, Wenjie Gang, Jinbo Wang
Published in: Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019)
Publisher: Springer Singapore
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Abstract
The exhaust air insulation (EAI) wall is a new type of external wall which is mainly composed of an air-permeable porous material, a ventilated cavity, and an exterior protection structure. The EAI wall can reduce the cooling/heating load through the wall by recovering the low-grade thermal energy of exhaust air. A finite-difference frequency-domain (FDFD) model was proposed to predict the thermal response of the EAI wall. The computation time of the FDFD model is lower than that of the finite-difference time-domain (FDTD) model. The experimental test of the EAI wall was conducted in a full-scale test cell under predefined boundary conditions. The experiment results were compared with the calculation results by the FDFD model. Results indicated that the temperatures of the EAI wall calculated by using the FDFD model show good agreement with the measurement data.