空气源热泵空调器制热量测量不确定度评定

Uncertainty Evaluation in Heating Capacity Measurements on Air-Source Heat Pump Air Conditioner

分析并筛选了空气焓值法测量制热量测定不确定度的主要来源,通过数学模型进行不确定度的A类评定和B类分析,推导和建立了静压差、焓值、空气比容、空气湿度等制热量不确定度主要分量的数学模型,通过实验数据评定了制热量不确定度。采用极限取值评定复杂不确定度分量,为制热量不确定度评定提供了一种简便可靠的方式。

The main sources of uncertainty in heating capacity measurements tested by air enthalpy method were analyzed in this paper.Type A and Type B analyses were carried out for uncertainty evaluation through mathematical model.The mathematical models for the main components of uncertainty of heating capacity were deduced and established based on difference of static air pressure,air enthalpy value,air specific volume and air humidity.The heating capacity measurement uncertainty was calculated based on experimental data,and the complex uncertainty components were evaluated by limit method.Thus,a convenient and reliable method was provided to evaluate the uncertainty for heating capacity measurement.