家用热泵空调送风方式对热舒适性的影响

Influence of Household Heat Pump Air Conditioner Air Supply Modes on Thermal Comfort

为研究家用热泵空调送风方式对热舒适性的影响,在人工环境实验室内测试了中送风、下送风和分布式送风的环境参数,并对15名受试者的热感觉和热舒适进行了问卷调查.实验结果表明:初始背景温度为0℃时,分布式送风可快速、均匀地提升人体各部位的空气温度,受试者的整体热感觉以及整体热舒适上升最快,受试者的热舒适性可得到显著改善;室内热环境稳定后,分布式送风温度均匀度最小为1.9℃,在送风区域内的受试者各部位感觉较暖,局部热感觉差异最小,且其他位置的受试者都不觉得冷;稳态局部热感觉与整体热舒适的拟合结果表明,足部热感觉对整体热舒适影响显著,下送风与分布式送风垂直温差小于3℃,在送风区域内,可以明显提升人体足部的热感觉,约75%的受试者对热环境表示满意.综合环境参数测试及问卷调查的结果,分布式送风热舒适性的综合效果最好.

In order to study the influence of household heat pump air conditioner air supply modes on thermal comfort,the environmental parameters,as well as 15 subjects'thermal sensation and thermal comfort,were investi⁃gated under the air supply modes of medium air supply,down air supply and distributed air supply in the artificial en⁃vironment laboratory.The results show that when the initial background temperature is 0℃,the air temperature around all human body parts can be increased quickly and evenly by the distributed air supply mode,and the overall thermal sensation and the overall thermal comfort of the subjects rise fastest,so the thermal comfort of the subject has a significant improvement.After the indoor thermal environment is stable,the temperature evenness of the distributed air supply is the minimum of 1.9℃,which makes the subjects in the air supply area feel warm,the local thermal sen⁃sation difference is the smallest,and the subjects in the other places do not feel cold.The fitting results of steadystate local thermal sensation and overall thermal comfort show that the thermal sensation of the feet has a significant effect on the overall thermal comfort,the vertical air temperature difference of the distributed air supply and down air supply is less than 3℃,and the thermal sensation of feet can be improved in the air supply area.Thus,about 75%of the subjects are satisfied with the thermal environment.In conclusion,the distributed air supply can meet more people's requirements for thermal comfort.