A study of the Convection Heat Transfer Coefficient for the Interior Walls of Building

建筑内墙对流传热系数的研究

• 批准号: 61550428
• 负责人: KOBAYASHI Sadanori
• 金额: $ 1.28万
• 依托单位: Fukuyama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550428/
• 关键词: Convection Heat Transfer Coefficient; 取合い部分の気温分布; 室内壁面の対流熱伝達率; 取合い部分の対流熱伝達率; 室内表面の対流熱伝達率

A Study of the measuring method and error of coefficient of heat transfer by convection for the interior walls have been studied using the appratus for measuring the air temperature near the surface of a wall.Quantity of heat flow by convection are assessed from multipling the air temperature gradient at the surfce by thermal conductivity of air.Values of the coefficient of heat transfer by convection for a wall are obtained by dividing the convection heat leaving the wall surface per square meter per hour by the temperature difference between the surface and the air 10cm away from the surface. The apparatus is therefore designed so that the air temperature of the thermal boundary layer is measured by a 0.05mm diameter,CA thermocouple mounted,to move near or away from the surface and holding it at any predetermined distance.(e.g.0.25,0.5,1,2,3,4mm from surface) The following can be deduced from experimental results;1.Comparing with the other methods this method takes a shorter time and dose not disturb the surface condition.2.The maxmum and minimum value of the local heat transfer coefficient by convection for a wall is found at the distances approximately 50cm and 25cm consecutivity from the floor.3 Comparing the convection heat transfer coefficient along the wall at the center,with heat transfer coefficient at the corner of the wall,the value obtained at the corner is smaller than the value at the center.

本文研究了用近壁面空气温度测量装置测量内墙对流换热系数的方法和误差。对流热流量是用近壁面空气温度梯度乘以空气的导热系数来估算的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度乘以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度乘以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度乘以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度乘以空气的导热系数得到的。对流换热系数是用近壁面空气温度梯度除以空气的导热系数得到的每平方米每小时离开墙体表面的对流热量是由表面与距表面10cm处空气的温差产生的。因此，该装置被设计成使得热边界层的空气温度通过安装的0.05mm直径的CA热电偶来测量，以靠近或远离表面移动并将其保持在任何预定距离处。（www.example.com，距表面0.5，1，2，3，4mm）从实验结果可以推导出以下内容：e.g.0.25在中心处沿壁面沿着的传热系数，在壁面拐角处的传热系数，在拐角处得到的值小于在中心处的值。