改善学生宿舍室内热环境的局部送风系统

A Local Air Supply System to Improve Indoor Thermal Environment of Dormitory

根据重庆大学学生宿舍分体式空调的运行现状,通过问卷调查分析空调工况下的室内热舒适情况。结果显示:在冬夏两季,空调送风方式对室内睡眠区域及工作区域的热环境均存在不同程度的影响,尤其是冬季,浮力效应导致热空气集聚于房间上部空间,无法满足下部工作区域的热舒适要求。对比改善送风系统的相关技术,亦存在夏冬两季上下部空间区域空调效果不理想,送风系统可调节性弱等不足。为解决这一问题,作者设计了一种局部空调送风系统,该系统可根据宿舍床位高度将房间分成上下两个不同局部空间,即上部睡眠区域和下部工作区域。通过选择不同的空调送风支路,可控制睡眠区域或工作区域的温度,以满足室内学生的实际热环境需求。

ased on the operation of split air conditioners of dormitories in Chongqing University,the indoor thermal comfort is analyzed by questionnaire.The results show that the mode of air supply has different degree effects on indoor sleeping area and working area with thermal environment in summer and winter,hot air accumulate in the upper space of the room caused by buoyancy effect especially in winter,which can not meet the comfort requirements for staffs in the lower space areas.Compared with other air supply system technologies,there are also shortcomings such as unsatisfactory air conditioning in the upper and lower space areas,adjustable of the air supply system weakly and so on.Thus,a local air-conditioning air supply system with flexible regulation,obvious effect and large control area is proposed,which divides the room into two spaces for different functions:the upper sleeping area and the lower working area,according to the height of the dormitory bed,by selecting different air-conditioned air supply branch to control the air temperature of sleeping area or working area to meet the actual thermal environment needs for staff.