6 测试点的布置保温效果测试时,不可能把测头密排于管道或设备上,只能抽样测若干个点的热流值,并把它们的统计平均值作为这一管段或设备的热损值。利用部分测定值推断和代表总体值,势必在测试误差之外引进新的误差,称为代表性误差。由于保温材料质地不均匀,保温结构破损 6 Test point layout When testing the insulation effect, it is not possible to seal the probe on the pipe or equipment. Only the heat flow values ​​at several points can be measured by sampling, and the statistical average of these values ​​can be taken as the heat loss of this pipe segment or equipment. value. Using part of the measured values ​​to infer and represent the overall value is bound to introduce new errors outside the test error, called the representative error. Due to uneven texture of insulation material, insulation structure is damaged