Energy consumption zoning of application of liquified natural gas ambient air vaporizer
The performance of Ambient Air Vaporizers(AAVs)for Liquefied Natural Gas(LNG)exhibits notable regional variations due to climate differences.Based on meteorological data in China from 2010 to 2017,this paper analyzes the factors influencing the energy consumption of the auxiliary heater in LNG AAV applications.Through correlation and discrete employed,key meteorological factors are dimensionally reduced.Using an energy consumption analysis,the auxiliary heater degree days(EDD(ts))is defined to be the energy consumption regionalization index of LNG AAV.The Co-kriging method is employed to the spatial interpolation of EDD(ts),and a K-means clustering algorithm is used for the energy consumption zoning.The resulting zones for the application of LNG AAV in China are classified into six categories:zero,near-zero,low,medium,high and super-high energy consumption zones.In the zero energy consumption zone,where the annual temperature exceeds the auxiliary heater degree days(19℃),continuous operation of LNG AAV for 8 hours ensures that the outlet temperature of natural gas is not lower than the standard value(5℃).In other climate zones,LNG AAV may need to operate auxiliary heaters within the operational cycle to ensure that the natural gas temperature is above 5℃.The annual energy consumption of auxiliary heaters increases successively in near-zero,low,medium,high and super-high energy consumption zones.
liquified natural gasambient air vaporizerenergy consumption zoningcluster analysiskriging interpolation
万方数据
维普
