Study On Interior Natural Ventilation Based On Coupled Simulation Between Indoor And Outdoor Environment

Energy-saving and low-carbon has become the issues of global attention in modernsociety. Buildings have been one of the major consumers of resources and energy, leadingto building energy efficiency becoming a critical problem to be researched and solved.Passive energy-saving design can reduce the dependence of mechanical equipment byadjusting the form or components of itself. It should be widely used and promoted for itcan greatly reduce the energy consumption. Natural ventilation is one of the good passiveenergy-saving methods. But in traditional research of indoor thermal environment, thedifferent external environment cannot be adequately reflected in the analysis of indoor. Sothis paper attempts to use the coupled simulation method which uses CFD and multi-zonemodel (TRNSYS) to combining indoor and outdoor coupled modeling to study the statusof the natural ventilation of indoor thermal environment. Provide a simulation methodwhich considering the indoor and outdoor environment.First, a literature review on natural ventilation of interior, active air-conditioningsystem and thermal comfort is carried on in this paper, followed by a comparison betweenfield measurement data and simulation results by using CFD techniques. And use thissimulation method to calculate ventilation condition under different wind directionthroughout the whole year.Then use the coupling simulation by TRNSYS and CFD, we can get the temperatureof building in natural ventilation. According to the temperature change, we calculate thePMV. It is the excellent measure to evaluate the interior thermal environment. Finally, thispaper outlines the potential directions of future studies.