置换通风室内热舒适性的数值模拟研究

利用CFD方法对一间采用置换通风系统的办公室进行了数值模拟，研究了不同送风参数下的室内流场，并用PPD、PMV等指标评价了室内的热舒适度。结果表明，热舒适度受送风参数的影响较大，并且其受温度的影响大于吹风的影响。最后指出，在送风参数选择合适的情况下，置换通风系统同样能提供良好的热舒适性。

Numerical Simulation of Thermal Comfort in Office with Displacement Ventilation

Numerical simulation of displacement ventilation in a typical office is carried out using computational fluid dynamics. The characteristics of flow field under different supply air conditions were investigated, and the thermal comfort were measured in terms of PPD, PMV, etc. The results show that the thermal comfort is result from supply air property, and is more sensitive to temperature than draught. It was also found that displacement ventilation system with proper supply air property could provide a good thermal environment in room while heat load is low.