Compared with displacement ventilation, attachment ventilation characterized by high supply air momentum has the potential to generate warm air lake on the floor under winter heating mode. However, the airflow can not keep attaching to the floor and moves upwards by thermal buoyancy. The influence of relayed fans and low level exhausts on performance of attachment ventilation under heating mode was explored. One/two relayed fans and five dimensionless exhaust heights were investigated. Performance evaluating index include vertical temperature gradient, temperature efficiency, predicted mean vote (PMV), predicted percentage of dissatisfied (PPD) and Draught risk (DR). Simulation results showed that relayed fans and low level exhausts effectively increase the attachment length of warm air lake in winter. Operation of relayed fans reduces vertical temperature difference, maintaining the head and foot temperature difference less than 3 °C. Low level exhausts effectively increase occupant zone temperature, reduce airflow short circuit and improve temperature efficiency. The operation of relayed fans slightly increase the temperature efficiency under high level exhausts. Two relayed fans decrease the temperature efficiency under low level exhausts. Better performance can be achieved by using only one relayed fan.

与置换通风相比，以送风动量高为特征的附件通风有可能在冬季采暖模式下在地板上产生热气湖。但是，气流无法保持附着在地板上，并由于热浮力而向上移动。探讨了换热风扇和低位排风对加热模式下附件通风性能的影响。研究了一/两个中继风扇和五个无因次排气高度。性能评估指标包括垂直温度梯度，温度效率，预测平均投票（PMV），预测不满意百分比（PPD）和风险草案（DR）。仿真结果表明，冬季接力风机和低水平排风有效地增加了暖风湖的附着长度。中继风扇的运行可减少垂直温度差，并保持头和脚的温度差小于3°C。低水平排气有效地提高了乘员区温度，减少了气流短路并提高了温度效率。换气扇的运行会在高水平排气下稍微提高温度效率。两个中继风扇降低了低水平排气条件下的温度效率。仅使用一个中继风扇可以实现更好的性能。两个中继风扇降低了低水平排气条件下的温度效率。仅使用一个中继风扇可以实现更好的性能。两个中继风扇降低了低水平排气条件下的温度效率。仅使用一个中继风扇可以实现更好的性能。