Fuel cell systems are regarded as a promising solution for future electrical energy generation onboard of commercial aircraft. The Hydrogen gas supplied to the fuel cell is normally stored athigh pressures or cryogenically. The following gas cylinder in figure Qu 7 is used and is to belocated in the cargo hold of the aircraft.Figure Qu 7The rigid container holds 0.9 kg of hydrogen gas initially at 15bar and 20oC. As the altitude of theaircraft increases and economical cruising speed is achieved the cargo temperature, and the cylindertemperature, drops to 0oC. Determine the final hydrogen pressure at the new altitude and heat lostduring the ascent.For Hydrogen, R = 4.126 kJ/kgK, cv = 10.16 kJ/kgK
Fuel cell systems are regarded as a promising solution for future electrical energy generation onboard of commercial aircraft. The Hydrogen gas supplied to the fuel cell is normally stored athigh pressures or cryogenically. The following gas cylinder in figure Qu 7 is used and is to belocated in the cargo hold of the aircraft.Figure Qu 7The rigid container holds 0.9 kg of hydrogen gas initially at 15bar and 20oC. As the altitude of theaircraft increases and economical cruising speed is achieved the cargo temperature, and the cylindertemperature, drops to 0oC. Determine the final hydrogen pressure at the new altitude and heat lostduring the ascent.For Hydrogen, R = 4.126 kJ/kgK, cv = 10.16 kJ/kgK
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Fuel cell systems are regarded as a promising solution for future electrical energy generation onboard of commercial aircraft. The Hydrogen gas supplied to the fuel cell is normally stored athigh pressures or cryogenically. The following gas cylinder in figure Qu 7 is used and is to belocated in the cargo hold of the aircraft.Figure Qu 7The rigid container holds 0.9 kg of hydrogen gas initially at 15bar and 20oC. As the altitude of theaircraft increases and economical cruising speed is achieved the cargo temperature, and the cylindertemperature, drops to 0oC. Determine the final hydrogen pressure at the new altitude and heat lostduring the ascent.For Hydrogen, R = 4.126 kJ/kgK, cv = 10.16 kJ/kgK
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