【摘要】 通过分析围护结构传热系数存在的非限定缺陷以及由此造成的工程问题,提出了一个基本能合理表征围护结构传热及节能特征的参量,即围护结构热阻,它完全避免了由外环境条件变化而引起的设计和检测中的不一致性问题.同时对K值、K限值以及特征值R值之间的内在关系进行了表述.更多还原

【Abstract】 In this paper,an eigenvalue,which and correctly indicates the characteristics of heat transfer and energy-saving in building envelopes,is suggested by analyzing existed non-restrict disadvantages and some engineering problems for the overall heat transfer coefficient.The eigenvalue can avoid a non-coherent problem which is result from the change of external environment in design and measurement.Meanwhile,the intrinsic relationships among the K value,the K limited value and the eigenvalue R are expressed.更多还原