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提出了用热射流起始无因次高度来反映热源起始高度对下送风空调房间热分布系数α的影响，利用回归原理得出了α随阿基米德数Ａｒ_ｎ、热射流自由度Ｚｒ、机械射流自由度Ｚｊ及热射流起始无固次高度 变化的准则关系式。用连结向量图法和对实验数据回归公式的Ｆ检验，对影响室内热分布规律的各个因素进行了分析，发现这些因素均为主要影响因素，其影响的相对主次依次为Ａｒ_ｎ，Ｚｒ， 和Ｚｊ，回归结果具有很强的显著性。
The effect of the initial height of the heat source on the heat distribution coefficient α of the air-blast air-conditioned room is presented by using the non-dimensional height of the heat jet. Using the principle of regression, the α-Arcimard number Ar_n and the thermal jet degree of freedom Zr are obtained. , mechanical jet freedom Zj and the standard relationship of the initial non-solid height variation of the hot jet. Using the linked vector graph method and the F-test of the regression formula of the experimental data, the factors affecting the indoor heat distribution law were analyzed. It was found that these factors are the main influencing factors, and their relative priorities are Ar_n, Zr, and Zj, the regression result is very significant.