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« Use of Li-ion PT Cuiser as a NYC Yellow Cab Approved | Main | Iowa State Researchers Developing More Powerful Solar Cells »

September 19, 2006

Comments

amazingdrx

This is very encouraging for superconducting energy storage. costs are coming within range of practical large scale renewable energy storage.

donb

Good to see the progress being made here.

Note however that this type of construction is useful only for the relatively short distances as in this application. The high capacitance between the conductors can cause voltage regulation problems on long runs.

Thomas

It strikes me as "odd" that it operates below the boiling point of nitrogen, because usually such a system would operate right at the boiling point, allowing some of the nitrogen to evaporate and thereby removing a lot of heat.

On the other hand, the narrow channels of the coolant do not seem well suited for two-phase flow, which can be troublesome (ask any oil/gas pipeline engineer).

That said, liquid nitrogen is (presumably) orders of magnitude more managable than liquid hydrogen/helium used in low-temperature superconductors. Having read a slide-show about their experience going from R&D to pilot-production is seems that mass production of the superconducting strips is certainly managable (although there still seems to be important efficiency improvements hidden in the manufacturing process). What I'd like to know is the cost of raw raw material per MW·km.

This hi-temp superconductor is a wonderful candiate as energy carrier in my vision for a continent-spanning electricity super-highway to distribute renewable energy (electricity) from regions of excess to regions of deficiency (is that the right word?). Maybe as DC?..

John Lauletta

How does the energy to create the cryogenic temperatures compare to the reduction in losses due to conductor resistance?

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