直接空冷机组设计气温选择方法的探讨

Discussion on Selection Methods of Design Temperature for Direct Air Cooling Units

设计气温的正确选择对空冷机组的安全经济的运行有着重要的意义。阐述了获取真实可靠气象资料的方法以及气温典型年的选择方法,总结了目前已有的确定设计气温的方法。对各个设计气温的选择方法进行了探讨分析,并应用于实例分析,得出各方法的可行性,并指出设计气温的确定可由+5℃以上全年加权平均气温法计算结果,充分考虑大气温度的逐年上升和热回流的产生,适当提高2～3℃后为设计气温。

The reliable design temperature is important to the safe and economic operation of air cooling unit.The methods to obtain reliable meteorological data and air-temperature typical years are elaborated,summarized the existing methods that were used to determine the design temperature.All these methods were analyzed and used to solve actual problems,then the above ＋5℃ weighted average temperature method was use to determine the design temperature by analyzing every method＇s feasibility,the final design temperature was elevated 2～3℃ by considering the rising air temperature year after year and thermal reflux.