Impact of pipelines on cooling demand in the gaseous hydrogen refueling station |
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| Affiliation: | 1. Institute of Power Engineering and Advanced Technologies, FRC Kazan Scientific Center, Russian Academy of Sciences, 420111, Kazan, st. Lobachevsky, 2/31, PO Box 190, Russia;2. Federal Government Budgetary Institution of Science, “Federal Scientific Agroengeneering Сenter VIM”, 109428, Moscow, 1st Institutskiy Proezd, Building 5, Russia;3. Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 119071, Moscow, Leninsky Prospekt, 33, Building 2, Russia;1. Department of Chemical Engineering, Federal University of São Carlos (DEQ-UFSCar), São Carlos, Brazil;2. Chemistry Institute, Federal University of Goiás (IQ-UFG), Goiânia, Brazil;3. São Carlos Institute of Chemistry, University of São Paulo (IQSC-USP), São Carlos, Brazil;3. School of Chemistry and Materials Science, Key Lab for Functional Materials Chemistry of Guizhou Province, Guizhou Normal University, Guiyang, 550001, China |
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| Abstract: | Hydrogen precooling is an effective method to realize safe, adequate, and fast filling for fuel cell vehicles. Estimating cooling demand is essential for the precooling unit configuration and energy analysis. Complex pipelines exist between the station's storage tanks and the vehicle cylinder. However, their impact on the cooling demand is often underestimated. In this paper, a thermodynamic model of the whole hydrogen refueling process was established to investigate the impact of pipelines in different positions. Accordingly, the influence of pipelines on the thermodynamic parameters was analyzed. Then the effects on the precooling performance were concluded. The results show that flow resistance before the breakaway increases total cooling demand by 9.9%. Meanwhile, heat dissipation through the pipe, located between the control valve and the heat exchanger, smoothens the cooling demand curve and reduces the total cooling demand by 5.7%. After the break-away, the flow resistance of pipelines significantly changes the mass flow rate curve and cooling demand. Heat absorption from the pipe wall slightly influences the cooling demand but jeopardizes refueling safety. |
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| Keywords: | Hydrogen refueling station Cooling demand Pipeline resistance Heat transfer effect |
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