上海地区室外空气比焓简捷计算方法
Simple calculation method for outdoor air specific enthalpy in Shanghai
摘要：
分析了上海地区典型气象年数据，发现室外空气比焓可仅采用室外干球温度确定，经过曲线拟合获得了上海地区室外空气比焓对于温度的四次多项式函数。讨论了典型年数据集中度，采用2种实时数据进行了验证，结果表明可以采用该简捷计算方法计算室外空气比焓，标准差小于8 kJ/kg。采用该简捷计算方法分析了利用室外自然冷量的节能潜力。提出其他地区可采用该地区或代表地区的室外空气比焓简捷计算公式求解室外空气比焓。
Abstract：
Analyses the data of the typical meteorological year in Shanghai. Finds that the outdoor air specific enthalpy can be calculated only by the outdoor air dry-bulb temperature. The four order polynomial function of the temperature is obtained by curve-fitting method. Discusses the concentration degree of the typical meteorological year data, and verifies the data with two kinds of real-time data. The results show that the simple method can be applied to calculate outdoor air specific enthalpy, and the standard deviation is less than 8 kJ/kg. Analyses the energy-saving potential of free cooling with the outdoor air using this simple calculation method. Proposes that other areas can adopt the function of this area or a representative area to make simple calculation.
Keywords:typical meteorological year, outdoor air specific enthalpy, dry-bulb temperature, simple calculation, free cooling