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Studies on Improvement of Thermal Environment of Rc construction in Okinawa

冲绳RC建筑热环境改善研究

基本信息

批准号：
11650639
负责人：
FURUKAWA Nobuhisa
金额：
$ 2.18万
依托单位：
Hosei University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

We researched following two items in 2001. (1) We compared effects of cover roof ( of house (A) ) with insulation materials ( of house (B) ). (2) We put insulation materials of thickness 150mm on the roof slab under cover roof and compared the effects of it with the state without improvement. It is important that the loft temperature become low by cover roof. The results of experiment are as follows, Generally the thickness of insulation material is 35〜50mm in Okinawa, but we used that of thickness 150 mm to compare effects of cover roof with insulation materials. The loft temperature of the house (B) was improved by the insulation material and became almost same as the house (A) of cover roof during daytime. but the house (A) of cover roof is profitable because the temperature of the house (A) is lower than the house (B) in the night. As for the cause, an insulation material checks effluence of heat of the loft between the nights. This means that the winter season acts profitably. The experiment (2) went under a prediction that it would be got the greatest effect if an insulation material was used together with cover roof. The temperature of the loft which used an insulation material together with cover roof was almost equal to that cover roof by oneself. But, it is effective for the winter season to establish an insulation material. In the strong area of solar radiation, insulation of solar radiation is effective in the summer, and it is effective to prevent effluence of heat with an insulation material in winter.

2001年我们研究了以下两项。 (1)我们比较了覆盖屋顶（房屋（A））与隔热材料（房屋（B））的效果。 (2)在有盖屋顶下的屋面板上铺设厚度为150mm的保温材料，并与未改善的情况进行效果比较。重要的是通过覆盖屋顶来降低阁楼温度。实验结果如下，冲绳地区保温材料的厚度一般为35〜50mm，但我们采用150mm的厚度来比较覆盖屋顶与保温材料的效果。房屋（B）的阁楼温度通过隔热材料得到改善，白天几乎与带顶棚的房屋（A）相同。但有顶棚的房屋（A）是有利可图的，因为房屋（A）夜间的温度低于房屋（B）。至于原因，绝缘材料会阻止阁楼夜间的热量流出。这意味着冬季有利可图。实验（2）预测，如果将保温材料与覆盖屋顶一起使用，效果将是最大的。使用隔热材料和覆盖屋顶的阁楼的温度几乎与单独覆盖屋顶的温度相同。但是，在冬季建立隔热材料是有效的。在太阳辐射强的地区，夏季有效隔绝太阳辐射，冬季使用隔热材料有效防止热量外流。