论文部分内容阅读
对自行设计的导热系数测定装置提出控制方案及其控制算法，设计出相应的监控软件，实现了温度的自动巡回检测和控制功能；传热是否达到稳态的自动判断功能；实验数据自动处理和数据文件的自动建立功能等。从而提高了导热系数的测试精度并实现了测定装置的自动运行。能够达到主测试段温度在连续１５ｈ内不沿同一方向变化且不超过±１℃，同时左右两隔缝温差均小于内层平均温度与外层平均温度之差的０５％，当某厂家复合硅酸盐保温涂料的主测试段热流量为４０Ｗ时，导热系数为０．０５５８Ｗ／ｍ·℃。
Put forward the control scheme and its control algorithm to the self-designed thermal conductivity measuring device, designed the corresponding monitoring software, realized the automatic temperature detection and control function; whether the heat transfer reaches the steady state automatic judgment function; the experimental data automatic processing and Automatic creation of data files and more. Thereby improving the test accuracy of the thermal conductivity and realizing the automatic operation of the measuring device. The temperature of the main test section can not change along the same direction within 15h and does not exceed ± 1 ℃, while the temperature difference between the left and right seams is less than 0.5% of the difference between the average inner layer temperature and the outer layer average temperature A manufacturer of composite silicate insulation coating of the main test section heat flow of 40W, the thermal conductivity of 0.0558W / m · ℃.