空气焓值法测量全年能源消耗效率不确定度评定方法研究

以焓值法的直接测试量表征的制冷量和制热量计算公式作为基础数学模型,采用GUM法和蒙特卡洛法相结合的方法来评定全年能源消耗效率(APF)的不确定度。由于焓值法数学模型呈现出明显的非线性,首先使用蒙特卡洛法来验证额定制冷量和额定制热量GUM法评定结果, 验证结果显示2种方法偏差不超过2‰。然后,给出了5个工况下换热量的不确定度评定结果,以此作为APF蒙特卡洛模拟的输入量,并给出了自适应蒙特卡洛法评定APF不确定度模拟流程,得到某空调的APF扩展不确定度评定结果为0.09 kW·h/(kW·h)（k=2）。

Study on Uncertainty Evaluation of Annual Performance Factor Based on Air-enthalpy Method

Based on air-enthalpy method model expressed in direct measurement parameters, the uncertainty of annual performance factor (APF) was evaluated using Monte Carlo method combined with GUM. As air-enthalpy method is nonlinear and GUM is only perfectly suitable for the linear model, the rated cooling capacity uncertainty and the rated heating capacity uncertainty obtained using GUM were verified primarily by MCM, and the differences between results obtained by GUM and MCM were lower than 2‰. On this basis, uncertainty results of five different measurement conditions were given, and these parameters were used as the inputs of simulation. The adaptive Monte Carlo method simulation flow chart of APF was given, and APF uncertainty of an air conditioner was evaluated, the result was 0.09 kW·h/(kW·h)(k=2).