室内气流流动对辐射顶板供暖系统的影响分析

Influence analysis of indoor air flow on radiant ceiling heating system

中文关键词: 辐射供暖  气流组织  垂直温差  供热能力

英文关键词: radiant heating  air distribution  vertical temperature difference  heating capacity

中文摘要:

      辐射顶板冬季供暖时，室内会出现较大的垂直温差，且不符合人体“头冷脚暖”的需求。为了提高辐射顶板供暖系统的舒适性,分别对辐射顶板结合侧送风、下送风、上送风三种气流组织形式的供暖系统进行实验测试。结果表明：三种气流组织形式均能提高实验房间的操作温度;其中下送风（450rpm）工况的改善最显著。侧送风和下送风工况能减少室内的垂直温差，降低垂直不满意率，上送风工况增大了垂直温差，垂直不满意率超过20%。三种气流组织形式均能提高辐射顶板的供热能力，其中下送风（450rpm）工况下辐射顶板的供热能力提升最显著。

英文摘要:

      In ceiling radiant heating, there will be a large vertical temperature difference in the room and the indoor air temperature does not meet the need with “cold head and hot feet” of the human body. In order to improve the comfort of the radiant ceiling system in heating mode. Heating experiments were carried out on the radiant ceiling combined with three air distribution modes: blowing in the side, blowing upward or blowing downward. The experimental results show that all three air ventilation modes can increase the operating temperature of the experimental room. Among them, the improvement of the working condition of blowing downward (450rpm) is the most significant. Blowing in the side and blowing downward can reduce the vertical temperature difference in the room and the vertical dissatisfaction rate. The working condition of blowing upward increases the vertical temperature difference, and the vertical dissatisfaction rate exceeds 20%. At the same time, all the three air distribution modes can improve the heating capacity of the radiant ceiling, and the heating capacity of the radiant ceiling can be improved most obviously under the condition of blowing downward (450rpm)