具有温度约束的设备双层保温经济厚度计算

对于设备保温而言，两层保温材料夹缝处的温度即为外层保温的最大可能使用温度，而该蔡同时受到内，外层保温材料厚度变化的影响。为得到双层保温材料的经济厚度，就要合理调整内，外层保温材料厚度，根据传热学原理，建立了具有温度约束时的双层保温最优化目标函数和约束条件，采和内部惩罚函数法对约束最优化问题进行了求解。

Thickness Calculations for Temperature-Constained Two-layer Insulation System on Equipment

For equipment insulation, the temperature between the two layers of the insulation is the maximum allowable operation temperature for the outer layer material, and is subject to the temperature change in both inner and outer layers. Both the inner and outer layers of the insulation materials shall be reasonably adjusted in thickness to obtain an economic two -layer system thickness. According to thermodynamics, the optimal objective function and constaint conditions are established for temperture - constained two lay-t'r insulation, and the constaint optimization is realized using the method of intrinsic penalty function. It is believed that the objective function, constaint conditions and solution for the two layer system are applicable for calculation in actual engineering. An example is given for calculating the economic thickness of the two -layer insulation in the walls of the heaters in a pump station.