固定流场下非均匀室内空气温度分布规律的研究

Study on Temperature Distribution Characteristics of Steady Flow Field in Non-Uniform Indoor Air Environment

针对送风温度的调节问题以及室内空气温度不均匀分布规律的问题,提出了送风温度可及性和室内热源可及性的概念,给出了固定速度场条件下,室内任意一点处的空气的温度和送风温度、室内热源以及初始状态下室内空气的温度分布之间的关系式,并对这个温度关系式的可靠性进行了验证,证明了这个温度关系式在温度场的快速计算以及反问题求解过程中的工程应用价值,文末,举出送风口温度调节策略的例子,讨论了创建不均匀的室内热环境的办法。结果表明:营造不均匀的空气环境比营造均匀混合的空气环境具有更大的节能潜力。

In view of the problems in the regulation of supply air temperature and the understanding of non-uniform indoor air temperature distribution,this paper puts forward the concepts of supply air temperature accessibility and heat source accessibility,establishes the correlation between the air temperature and supply air temperature at any point in the room under a fixed flow field,the internal heat source and the initial temperature distribution,and verifies the reliability of the temperature expression.The application value of this formula in the rapid calculation of temperature field and the solution of inverse problems is explained.Finally,taking the regulation mode of air supply outlet temperature as an example,the method of creating a non-uniform indoor air temperature environment is discussed.The results show that creating a non-uniform air environment has greater energy-saving potential than creating a uniformly mixed air environment.