印刷车间冬季分区域空调气流组织效果测试研究

Field test on air distribution of multi-zone air-conditioning in a large printing house in winter

传统空调方式下印刷车间类高大空间建筑冬季热分层明显,上部热量浪费较大.以西安某报社印刷厂车间分区域空调系统为对象,采用温湿度自记仪及铜-康铜热电偶实地测试了冬季车间热分层、垂直温度分布和相对湿度变化情况,并对比分析了空调未开启和空调制热两种工况.结果表明,车间所采用的空调送风方式在冬季能有效地破坏室内温度分层现象,有效控制印刷车间相对湿度,提高了空调暖风的利用程度.

There is a positive vertical temperature gradient between the floor and the ceiling, especially in win te r, due to the influence of buoyancy forces of warm air. During the heating season, the presence of a warm air layer below the ceiling will increase the heat losses. In order to keep comfort people in the occupied zone, more heat would be required. This paper measures the temperature profiles and thermal stratification in a large printing house either with air conditioning heating or without air conditioning. The results show that the air distribution conducted in the printing house prevents the thermal stratification effectively with a good control of humidity, which enhances the efficiency of the warm air utilization.