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湿空气热湿参数的准确计算在矿井热害的防治中具有重要意义。为了研究大气压力对深井湿空气热湿参数计算差异的影响,降低利用普通焓湿图查取非标准气压下湿空气热湿参数的误差及计算与查取过程的烦琐等问题,在对湿空气热湿参数进行分析的基础上,提出利用Excel电子表格对不同气压下湿空气热湿参数进行计算,并以气压分别为0.8×105Pa、101 325 Pa与1.15×105Pa为例对湿空气参数进行了计算与比较分析。结果表明,用标准气压代替实际气压对湿空气参数进行计算时,湿空气焓值、含湿量及密度的计算误差较大,因此,不宜用标准气压下的热湿参数代替实际气压下的热湿参数。
Accurate calculation of heat and moisture parameters of wet air is of great significance in the prevention and control of thermal damage in mines. In order to study the influence of atmospheric pressure on the calculation of the difference between the hot and humid parameters of deep wet air and to reduce the error of calculating the hot and humid parameters of wet air under the non-standard atmospheric pressure and the cumbersome calculation and retrieval process by using ordinary psychrometric chart, Based on the analysis of heat and moisture parameters, the paper proposes the use of Excel spreadsheet to calculate the temperature and humidity parameters of moist air under different pressures. Taking the air pressures of 0.8 × 105 Pa, 101 325 Pa and 1.15 × 105 Pa as examples, Computation and comparative analysis. The results show that when calculating the wet air parameters with the standard air pressure instead of the actual air pressure, the calculation error of the enthalpy, moisture content and density of the humid air is relatively large. Therefore, it is not suitable to replace the heat and humidity under the actual pressure with the heat and humidity parameters of the standard air pressure Wet parameters.