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The percentage of improvement in energy density when pressure is increased. 5.07% Given Information: Initial pressure = 35 MPa Increased pressure = 70 MPa Explanation: Compressed hydrogen gas requires a bigger and heavier tank for storage due to thermal insulation. That is why compressed hydrogen gas is stored in specially designed tanks that are capable of withstanding the storage pressure which ranges between 17-70 MPa. When compressed, the density of hydrogen is around 23 kg/m 3 at 35 MPa and 38 kg/m 3 at 70 MPa. The energy density at above mentioned pressure is given below: Pressure (MPa) Energy density (MJ/L) Energy density (kWh/m 3 ) 35 2.76 766.67 70 2.9 805.55 Therefore, the percentage improvement in energy density of CHG fuel is % E = 805.55 − 766.67 766.67 × 100 = 5.07 %

The percentage of improvement in energy density when pressure is increased. 5.07% Given Information: Initial pressure = 35 MPa Increased pressure = 70 MPa Explanation: Compressed hydrogen gas requires a bigger and heavier tank for storage due to thermal insulation. That is why compressed hydrogen gas is stored in specially designed tanks that are capable of withstanding the storage pressure which ranges between 17-70 MPa. When compressed, the density of hydrogen is around 23 kg/m 3 at 35 MPa and 38 kg/m 3 at 70 MPa. The energy density at above mentioned pressure is given below: Pressure (MPa) Energy density (MJ/L) Energy density (kWh/m 3 ) 35 2.76 766.67 70 2.9 805.55 Therefore, the percentage improvement in energy density of CHG fuel is % E = 805.55 − 766.67 766.67 × 100 = 5.07 %

Solution Summary: The author explains the percentage of improvement in energy density when pressure is increased. Compressed hydrogen gas requires a bigger and heavier tank for storage due to thermal insulation.

Sustainable Energy

Sustainable Energy

1st Edition

ISBN: 9781133108689

Author: Richard A. Dunlap

Publisher: Cengage Learning

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I need detailed help solving this exercise from homework of Engineering Mathematics II.I do not really understand how to do, please do it step by step, not that long but clear. Thank you!P.S.: Please do not use AI, thanks!

Chapter 20 Solutions

Sustainable Energy

Ch. 20 - If hydrogen followed an ideal gas law at all...Ch. 20 - Prob. 5P Ch. 20 - Prob. 6P Ch. 20 - Prob. 7P

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