Energy storage: compressed air?

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chatelot16
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by chatelot16 » 12/11/07, 13:24

I only see one possible application of compressed air on a vehicle: it is the hybrid with very low storage capacity:

use the pistons of an almost normal diesel engine as a compressor during braking and as a compressed air engine during starting

because the energy to recover during braking is a very strong power and the too small electric battery are not able to take everything without excessive wear: the compressed air would do it much better

for high power for a very short time the compressed air poses no problem of heating or cooling because it suffices to use the thermal inertia of the cooling water
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by Rabelaisian » 02/12/07, 20:51

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by Elec » 13/02/09, 20:37

Christophe wrote: When a laboratory independent of MDI can test it, we'll talk about it again ...


Absolutely. For the moment, MDI data appears in advertising documents, but nothing independently validated. This obscurity does not inspire confidence.
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by Elec » 13/02/09, 23:25

Overview of Compressed Air Energy Storage
http://coen.boisestate.edu/WindEnergy/r ... 07-001.pdf

Extract, page 3:

"As is the case with any energy conversion, certain losses are inevitable. Less energy eventually makes it to the grid if it passes through the CAES system than in a similar system without storage. Some of these losses are mitigated in the approach used by General Compression (using the wind turbine to compress the air directly). In any event, the requirement for additional heating in the expansion process is the most significant disadvantage. By some estimates, 1 kWh worth of natural gas will be needed for every 3 kWh generated from a CAES system. This is particularly problematic if fossil fuels are used for the heat addition. As natural gas prices increase, the economics of CAES, marginal at present, could fail. "
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Re: Energy storage: compressed air?




by izentrop » 01/01/19, 23:36

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Re: Energy storage: compressed air?




by Christophe » 02/01/19, 13:32

Nice digging up! 8)
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Re: Energy storage: compressed air?




by moinsdewatt » 05/01/19, 12:43

izentrop wrote:Projects are emerging https://www.connaissancedesenergies.org ... r-comprime



: Lol: the article dates from Dec 2013.

And few projects have come out.
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Re: Energy storage: compressed air?




by moinsdewatt » 05/01/19, 12:46



Generalities, not specifically cited projects.
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Re: Energy storage: compressed air?




by izentrop » 05/01/19, 13:48

It is true that it does not move much in the field
There are currently around ten CAESs in the world, in production or under construction. Let us quote:

Huntorf in Germany: 290 MW in 1979, using a salt mine, 3 hours of storage;
McIntosh in the United States (Alabama): 110 MW in 1991, using a salt mine, 26 hours of storage;
Hokkaido in Japan: 2 MW in 2001, using a coal mine, 4 hours of storage;
the SustainX project in the United States (New Hampshire): 1 MW in 2011 at the surface, 4 hours of storage;
the Hydrostor project in Canada: 1 MW planned for 2013 in submarine, 4 hours of storage;
the General Compression project in the United States (Texas): 2 MW planned in 2014, using a salt mine, 16 hours of storage;
the ADELE project in Germany: 90 MW planned in 2018, using a salt mine, 4 hours of storage;
the PG&E project in the United States (California): 300 MW planned for 2021, using a salt mine, 10 hours of storage;
the Norton project in the United States (Ohio): 2 MW, using a limestone mine, 700 hours of storage.
Huntorf and MCIntosh, we talk about it here

No recent news from the Adele adiabatic project http://www.ifpenergiesnouvelles.fr/Axes ... ent-viable Image

https://www.hydrostor.ca/ still seems to be in the running with an adiabatic project.


In the USA CAES without caverns is a difficult activity for new businesses.
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