scholarly journals Physiological Evaluation of Clothing Made of New Material for Protection against the Solar Heat Load

1992 ◽  
Vol 11 (6) ◽  
pp. 585-592 ◽  
Author(s):  
Shigeki WATANUKI ◽  
Mariko HIRAOKA ◽  
Tadashi DOI ◽  
Hiroshi KIYOKAWA
1988 ◽  
Vol 138 (1) ◽  
pp. 243-257 ◽  
Author(s):  
G. E. Walsberg

The coats of birds and mammals typically vary through their depth in structure, insulation and optical qualities. Physical models predict that such variation can substantially affect the solar heat load acquired by an animal. This study quantifies the consequences of complex coat structure for solar heat gain in the rock squirrel (Spermophilus variegatus (Erxleben, 1777)), a species normally exposed to intense solar radiation. This species' pelage consists of two well-defined layers: a dense inner coat of fine, dark hairs, and a sparse outer coat of coarse, light hairs. The optics, structure and thermal insulation of the inner and outer coats are quantified and used to predict rates of radiative heat gain using a physical model. The radiative heat load measured at the skin compares well with model predictions. The validated model is then used to explore the consequences for solar heat gain of varying the relative proportions of the inner and outer coat layers. Results demonstrate that the ratio of inner to outer coat depths occurring in rock squirrels is very near that theoretically predicted to minimize solar heat gain. This indicates that optimization of fur structure may represent an effective means of adjusting solar heat gain independent of coat insulation and surface coloration.


2013 ◽  
Vol 2013.52 (0) ◽  
pp. 69-70
Author(s):  
Yuji SHIMADA ◽  
Takashi OKUTSU ◽  
Makoto KOMURA
Keyword(s):  

2019 ◽  
Vol 138 ◽  
pp. 722-737 ◽  
Author(s):  
Ayad Saberian ◽  
Seyed Majid Sajadiye
Keyword(s):  

1961 ◽  
Author(s):  
J. R. Breckenridge ◽  
R. L. Pratt
Keyword(s):  

2016 ◽  
Author(s):  
Rupesh Sonu Kakade ◽  
Prashant Mer
Keyword(s):  

1968 ◽  
Vol 24 (5) ◽  
pp. 717-721 ◽  
Author(s):  
W L Roller ◽  
R F Goldman
Keyword(s):  

2021 ◽  
pp. 26-38
Author(s):  
V. Deshko ◽  
◽  
I. Bilous ◽  
М. Osadcha ◽  
◽  
...  

The issue of energy efficiency of buildings is now relevant for Ukraine, as the vast majority of them belong to the mass construction of the twentieth century. Efficient use of thermal energy presupposes the expediency of taking into account, in addition to heat loss, also additional heat inputs, among which - solar heat inputs to the building area. In some methods, this component is not taken into account, or is taken into account quite large. A dynamic approach to the analysis of energy performance of buildings is given in the European standard EN ISO 13790, which was introduced in Ukraine in 2013, using the model 5R1C. But this method has not been widely used in Ukraine. The aim of the study was to increase the efficiency of energy management of buildings by taking into account solar heat in their area in different methods and models. The paper presents suggestions to amend the appliance of the heat load graph and math modeling for measuring energy consumption of the buildings. Amendments include forecasting that considers solar heat impact on the building. Work done based on the example of 5 floored apartment building. Authors of the paper made an analysis of the variability of climatic data using international hourly weather data for Kyiv. Comparative analysis of the three different methods of calculations of solar heat impact showed promising results: using heat load graph with consideration of solar heat impact allows to reduce the energy consumption allotted for heating by 37 % for North-South window orientation and by 28 % for West-East window orientation; using DSTU B A.2.2-12:2015 standard allows to achieve reduction by 11 % for North-South window orientation and by 9 % for West-East window orientation; using grid model 5R1C – 10 % for North-South window orientation, 8.5 % for West-East window orientation. Key words: heat energy consumption, heat load graph, dynamic model, solar heat impact


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