Fundamental Study on the Exergy-Entropy Process of Buildng Environmental Control Systems

建筑环境控制系统火用-熵过程的基础研究

基本信息

批准号：
06650663
负责人：
SHUKUYA Masanori
金额：
$ 1.22万
依托单位：
Musashi Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

The conventional theories associated with how building environmental conrtol systems work are only based on the law of energy conservation. We have tried to extend the theory into the one which includes the law of entropy generation and the associated concept, exergy. We have made simple example calculation in terms of room air temperature variation caused by solar radiation transmitted through windows on a day in winter and water spraying over exterior wall surfaces. Following are the findings.1. The ratio of the exergy to the energy of solar radiation is between 80 and 90%.2. The exergy contained by the long-wave effective sky radiation always comes at at the outer surface of exterior walls. Its amount is about 1W/m^2 in summer in Japan.3. We classified the exergy of humid air into warm, cool, wet, and dry exergies. According to this classification, the liquid water in humid air as the environment contains either warm or cool exergy and wet exergy. It was found that the evaporative cooling is a process that consumes the wet exergy of water and ther by produce the cool exergy.4. The extinction coefficient for the trees were estimated from the measured solar radiation and the solar position. The proposed method to estimate the solar radiation coming through the tree was tested against the resultof the field measuremant. Solar radiation estimated was in good agreement with that measured. The measured room air temperature was compared with the calculated room air temperature and both temperatures were in good agreement.5. It was found that the earth has a system to dispose of all the entropy generated by the earth surface due to the consumption of solar exergy for various puposes including passive heating and cooling.

与构建环境Conrtol系统的工作方式相关的常规理论仅基于节能定律。我们试图将该理论扩展到包括熵产生定律和相关概念，Exergy的理论中。我们已经根据冬季一天通过窗户传播的太阳辐射引起的房间空气温度变化，并在外部壁表面上喷水，进行了简单的示例计算。以下是发现1。 Exergy与太阳辐射能量的比率在80％至90％.2之间。长波有效的天空辐射所包含的充气总是位于外壁的外表面。夏季在日本的数量约为1W/m^2。3。我们将潮湿的空气的充气分类为温暖，凉爽，潮湿和干燥的Exergies。根据此分类，由于环境含有温暖或凉爽的充电和湿的充电，因此潮湿空气中的液态水。发现蒸发冷却是一个过程，可以消耗水的湿气并通过产生冷却的速度。4。从测得的太阳辐射和太阳位置估算树木的灭绝系数。估计通过树的太阳辐射估算的方法是针对田间测量结果的结果测试的。估计的太阳辐射与所测量的辐射非常吻合。将测得的房间空气温度与计算出的房间空气温度进行了比较，并且两个温度都很好。5。发现地球具有一个系统，可以处理由于太阳能移动而用于各种偶像的太阳表面产生的所有熵，包括被动加热和冷却。