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天然气水露点是指天然气在水汽含量和气压都不改变的条件下,冷却到饱和时的温度。天然气水露点不但影响天然气质量,还影响管输效率和管道运行安全,是天然气重要的技术指标之一。天然气含水量通常采用水露点表示,当气体中水气达到饱和时,气温与水露点相同;当水气未达到饱和时,气温一定高于水露点。所以水露点与气温的之差可以表示气体中的水气距离饱和的程度。气体的露点越低,说明气体的绝对湿度越小,含水量越少。
Natural gas water dew point refers to the natural gas in the water vapor content and pressure are not changed under the conditions of cooling to saturation temperature. Natural gas water dew point not only affects the quality of natural gas but also affects the efficiency of pipeline transportation and pipeline safety and is one of the important technical indicators of natural gas. The natural water content is usually expressed as a water dew point. When the water vapor in the gas is saturated, the temperature is the same as the water dew point. When the water vapor does not reach saturation, the temperature must be higher than the water dew point. Therefore, the difference between the water dew point and the temperature can indicate the degree of saturation of the water vapor in the gas. The lower the dew point of the gas, the smaller the absolute humidity of the gas and the lower the water content.