Hwang. H.T,
Varma.A. (2014). Hydrogen storage for fuel cell vehicles. Current Opinion
in Chemical Engineering, Volume 5, August 2014, Pages 42-48. https://doi.org/10.1016/j.coche.2014.04.004
The article focuses on the different types of storage tanks and materials used and how different temperatures can affect hydrogen gas volumetric energy density. Hydrogen gas has high energy density on a mass basis as compared to petroleum (120 MJ/kg for hydrogen vs. 44 MJ/kg for petroleum). Sadly, it has low volumetric energy density (0.01 MJ/L for hydrogen at STP vs. 32 MJ/L for petroleum), yet it can be increased by liquefying it. It is also mentioned in the article that pressurizing hydrogen to -253.15 degrees celsius helps improve the volumetric density but due to this, it prompts a challenge to store hydrogen in large quantities for vehicle applications. The author also mentioned the constraints like safety, weight, volume, cost, and efficiency on hydrogen storage for a single trip of more than 500km.
The article also listed possible ways
of hydrogen storage, some advantages and disadvantages that are useful for our
project research. On the aspect of storage, compressed hydrogen storage offers
a promising option but falls short on the cost due to the material used. Better
production is needed to advance gravimetric and volumetric capacities, kinetics
within suitable temperature/pressure ranges, along with the overall cost. A
deeper understanding is required between cost, energy efficiency and environmental
impact are essential in the system cycle. From the article, we can take into
consideration for hydrogen to be implemented in-vehicle applications, together
with material exploration overall system advancement are required to overcome
impediment related to hydrogen storage. The article provides adequate analysis
that our team can consider upon for our research project.
Dear Raymond,
ReplyDeleteAfter reading your summary on Hydrogen storage for fuel cell vehicles, I would like to say I am impressed with the current advancement in the technology. Before reading this summary, the only technology which I am aware of was the electric vehicles. I like the fact that you include the actual numbers in the first paragraph which allow readers to ponder about it.
Overall, well done and great to see how this article helps you in the research project.
Best regards,
Joshua
Dear Joshua,
DeleteThank you for taking you time off to read through my article.
Appreciate you comments.
See you around in school.
Cheers,
Raymond
Dear Raymond,
ReplyDeleteThank you for your annotated summary. I am appreciated your research about the onboard storage of hydrogen. You explained clearly the limitation of hydrogen vehicles in storing hydrogen. You may also elaborate more on how the temperature affects the hydrogen gas volumetric energy density or the materials used to store hydrogen that you have mentioned at the start of your paragraph.
Thank you.
Best regards,
Kei Man
Dear Kei Man,
DeleteThank you for your input. I will work on it accordingly.
It was great working with you.
Cheers,
Raymond
Dear Raymond
ReplyDeleteThank you for researching for the proposal and drafting this annotated summary for the research project. I have read through your summary. Your summary brings out points to take note of when writing the proposal. We have to be aware of the drawbacks of hydrogen as a fuel and not be blinded by its benefits. Great effort.
Best regards
Jing Kai
Dear Jing Kai,
DeleteThank you for taking you time off to read through my article. Much appreciated and it was nice having you in the team.
Cheers,
Raymond
This comment has been removed by the author.
ReplyDeleteDear Raymond,
ReplyDeletePrior to reading your annotated summary, I had no clue what hydrogen could do, and what are the functions of it. I learnt that hydrogen could be stored and use it as an energy source, and liquifying it increases the volumetric density.
Do allow me to suggest some points for improvement in your summary:
Run on sentences in “...yet it can be increased by liquefying it also it is mentioned in the article that pressurizing hydrogen to -253.15 degrees Celsius helps improve the volumetric density but due to this, it prompts a challenge to store hydrogen in large quantity for vehicle applications.”
Run-on sentences contain two or more complete thoughts, which are placed together with no punctuation, or connector/ transition to mark the break between them.
It could be rewritten as “ …yet it can be increased by liquefying it. It is also mentioned in the article that pressurizing hydrogen to -253.15 degrees Celsius helps to improve the volumetric density but due to this, it prompts a challenge to store hydrogen in large quantity for vehicle applications.”
Cheers,
Sebastian
Thanks for the revision!
ReplyDelete