OALib Journal期刊
ISSN: 2333-9721
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天然气发电混输管网热值波动规律研究
, PP. 22-25
Keywords: 燃气发电,混输管网,热值波动,数值模拟
Abstract:
燃气电厂对热值波动以及热值变化率等气质均有较高要求,但供应燃气电厂的天然气气源种类越来越多,因此日趋复杂的气质(热值或沃泊指数)能否满足燃气电厂严苛的气质要求亟需进一步研究。为此,对2种不同热值气源替换的质换混输过程进行数值模拟,通过瞬时质扩散理论分析和模拟结果数据综合归纳,得出2种不同热值的天然气在质换混输过程中的气质变化规律和有效质扩散系数与雷诺数的关系式,并据此建立了预测质换混输管道沿程热值波动速率的方法,计算结果表明:对于一般输气速度,满足燃气电厂对热值变化率要求的输气距离为1~10km,流速越高所需距离越远。为工程设计提供理论和计算依据。
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