A new vehicle propulsion scheme calls for the use of liquid nitrogen as "fuel." The details of the power cycle are not the issue here (in brief, the liquid nitrogen is heated in contact with the atmosphere, pressurized, and expanded through the turbine that drives the vehicle). Calculate the max- imum work that could theoretically be extracted from the liquid nitrogen fuel. During each refueling stop, the driver purchases a Dewar vessel (a bottle) containing 0.05 m of liquid nitrogen at atmospheric pressure. The driver leaves in exchange a used bottle, that is, a bottle contain- ang gaseous N2 at atmospheric pressure and temperature. The proper- ties of nitrogen as saturated liquid at 1 atm are v = 1.24 x 10- m'/kg, h = -121.5 kJ/kg, and s ties of nitrogen at atmospheric temperature and pressure (300 K, 1 atm) are v = 0.49 m'/kg, h = 2.85 kJ/kg K. The corresponding proper- %3D = 172.1 kJ/kg, and s 6.25 kJ/kg K. %3D
A new vehicle propulsion scheme calls for the use of liquid nitrogen as "fuel." The details of the power cycle are not the issue here (in brief, the liquid nitrogen is heated in contact with the atmosphere, pressurized, and expanded through the turbine that drives the vehicle). Calculate the max- imum work that could theoretically be extracted from the liquid nitrogen fuel. During each refueling stop, the driver purchases a Dewar vessel (a bottle) containing 0.05 m of liquid nitrogen at atmospheric pressure. The driver leaves in exchange a used bottle, that is, a bottle contain- ang gaseous N2 at atmospheric pressure and temperature. The proper- ties of nitrogen as saturated liquid at 1 atm are v = 1.24 x 10- m'/kg, h = -121.5 kJ/kg, and s ties of nitrogen at atmospheric temperature and pressure (300 K, 1 atm) are v = 0.49 m'/kg, h = 2.85 kJ/kg K. The corresponding proper- %3D = 172.1 kJ/kg, and s 6.25 kJ/kg K. %3D
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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