Effect of Energy Diaphragm Wall on the Coupled Heat and Moisture Transfer Behavior of Interior Side Walls
Current research on Energy Diaphragm Walls (EDWs),both domestically and international-ly,mainly focuses on heat exchange performance,with few studies addressing their impact on the thermal and moisture environment of adjacent underground buildings. This paper investigates the influ-ence of EDWs on the heat and moisture conditions of adjacent basement walls and the heat and mois-ture flux interaction with the indoor environment by establishing a 3D numerical model of coupled heat and moisture transfer. Results showed that the operation of the EDWs significantly changed the direc-tion and intensity of heat and moisture flow on the interior side walls. Although the impact of the mois-ture transfer process on wall temperature change was less than 0.2℃ compared to pure heat transfer re-sults,this small discrepancy can cause a prediction deviation of sensible heat flux density by more than 10％. Ignoring the latent heat flux can result in an underestimation of the total thermal load of the un-derground space by more than 2.4％. Moreover,the insulation layer effectively blocks the flux of heat and moisture into the indoor environment.
energy diaphragm wallcoupled heat and moisture transferunderground spacewall heat and moisture flow
万方数据
维普
