本文介绍了在不同盲板角度下对百叶窗吸收太阳辐射向内流动部分的量热测量。本研究采用的一般方法遵循了Klems和Kelley（1996）最初使用的方法。通过使用电热百叶窗进行受控实验（模拟吸收太阳辐射的影响），可以直接确定向内流动部分的大小，并评估环境影响（即辐照度、内部/外部温差和外部空气膜系数）。对于这些试验，使用了校准转移标准（Bowen 1985），而不是商业密封标准- 玻璃装置。此外，由于不需要对试样进行辐照，所以整个试验在室内进行。结果表明，向内流动部分与内外温差有关，与吸收辐照度和外部空气膜系数关系不大。在某些情况下，盲板角度也会产生影响。具体而言，与所有其他情况相比，带有内部/外部温差的开放式百叶窗具有更高的向内流动分数。最后，提出并检验了一种测定向内流动分数的试验方法。 讨论了这些数据的应用。单元:双引文:研讨会，ASHRAE交易，第105卷，第。1999年2月2日，西雅图

This paper presents the calorimetric measurement of the inward-flowing fraction of absorbed solar radiation for a venetian blind at various blind slat angles. The general methodology used for this study followed that originally used by Klems and Kelley (1996). By conducting controlled experiments with an electrically heated blind (to simulate the effects of absorbed solar radiation), the magnitude of the inward-flowing fraction can be directly determined, and environmental effects can be evaluated (i.e., irradiance, interior/ exterior temperature difference, and exterior air-film coefficient). For these tests, a calibration transfer standard (Bowen 1985) was used rather than a commercial sealed-glazing unit. Furthermore, because irradiation of the specimen was unnecessary, the entire test was performed indoors. Results indicate that the inward-flowing fraction is dependent on the interior/exterior temperature difference, and only slightly dependent on the absorbed irradiance and exterior air film coefficient. The blind slat angle was also found to have an effect under certain circumstances. Specifically, an open blind combined with an interior/exterior temperature difference had higher inward-flowing fraction values than all other cases. Finally, a proposed test method for determining the inward-flowing fraction is presented and examined. The application of these data is discussed.Units: Dual