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针对该新型系统的被动采暖工作模式,基于热箱实验平台,实验研究分析系统该工作模式下运行的热特性情况。研究结果表明,系统在冬季被动采暖工作模式下,房间室内空气温度存在明显的温度分层现象,且温度分层造成的室内上下部的温差与投射在系统集热模块表面的太阳辐射强度存在某种线性关系。此外,实验结果还显示,系统在冬季被动采暖工作模式下依靠热虹吸作用可使集热模块上风口的空气温度加热至50℃以上。
Aiming at the passive heating mode of the new system, based on the experimental platform of the hot box, the thermal characteristics of the system operating under the working mode are analyzed experimentally. The results show that there is a significant temperature stratification in room air temperature under passive heating mode in winter and temperature difference between the upper and lower part of the room caused by temperature stratification and the solar radiation intensity projected on the surface of the system collector module A linear relationship. In addition, the experimental results also show that the system relies on thermal siphon effect in the passive winter heating mode to heat the air temperature of the outlet of the heat collecting module to over 50 ° C.