B-G model of total heat in winter for large space buildings with low-side wall air supply systems

Based on the temperature-type Block-Gebhart (B-G) model, considering the air infiltration, air floating of low-side wall air supply and moisture source dissipation, this paper establishes a B-G model of total heat to predict the indoor thermal environment and heating effect of large space buildings in winter. The B-G model of total heat in winter is built and divided into six zones for a large space building with low-side wall air supply system. The corresponding theoretical thermal environment and heating load are predicted according to the six experimental conditions. The experimental results show that the average value of the mean absolute relative error of air temperature, wall temperature and air enthalpy is 4.75%, 4.33% and 2.80%, respectively, and the relative errors of predicted and experimental heating load are -14.78% to -0.22%. This model extends the application of B-G model with moisture sources in winter.