Breakthrough in Energy Storage: Isentropic Energy
Feb 23, 2010 - Eric Wesoff - greentechmedia.com
Isentropic Energy’s pumped-heat electrical energy storage could disrupt the large-scale electrical energy storage market.
It's almost cliche to claim that large-scale energy storage is the holy grail or missing link of renewable energy. (That will not stop me from using that bromide a bit longer, however.)
Today, the only economical method of storing energy at a large scale is pumped hydro (pumped hydro accounts for almost all large-scale electricity storage) or Compressed Air Energy Storage (CAES). Unfortunately, both of those technologies require easy access to an immense airtight underground cavern or a couple of large reservoirs.
Pumped Heat Electricity Storage
The start-up claims that its reversible engine/heat-pump boasts three critical features:
Isentropic's innovations include using aircraft engineering techniques to reduce piston weight and cost, designing new valving to eliminate pressure losses, and using a new sealing technology.
The design is intended for "small utility scale." Howes is targeting 2-megawatt 8-hour systems (16MW-hrs), although he claims that the systems can scale up and down. The firm is in the early stage and has built a "proof of ignorance prototype," followed by a technology demonstrator. Design of prototype three is now completed and has been built to demonstrate reliability.
Hopefully, this start-up can get the job done and we can finally retire that "energy storage as holy grail" cliche.
Email this page to a friend
If you speak another language fluently and you liked this page, make
a contribution by translating
it! For additional translations check out FreeTranslation.com
(Voor vertaling van Engels tot Nederlands)
(For oversettelse fra Engelsk til Norsk)
(Для дополнительных переводов проверяют FreeTranslation.com )