Interesting Links for 16-12-2016
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Orgasms used as sexual currency
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(tags: android opensource Technology )
Just Eat online takeaway service pays £200m for UK rival Hungry House
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Vanadium-Flow
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"the new V-flow batteries reduce the cost of storage to about 5¢/kWh."
Efficiency is around 75%. Lifespan is around 20 years.
"It can be left completely discharged for long periods with no ill effects, making maintenance simpler than other batteries."
UniEnergy Technologies (UET) of Seattle produces the largest MW-scale vanadium flow batteries yet, using a molecule developed at the Pacific Northwest National Laboratory. PNNL’s breakthrough was to introduce hydrochloric acid into the electrolyte solution, almost doubling the storage capacity and making the system work over a far greater range of temperatures, from -40°C to 50°C (-40°F to 122°F), removing a large previous cost of maintaining temperature control.
Presently, the largest installed V-flow battery in the U.S. is a UET 2MW/8MWh (power/total dischargeable energy in a single full charge) system in Washington State at the Snohomish County Public Utility District’s Everett Substation. This vanadium battery can keep the lights on in 1,000 homes for eight hours.
A V-flow battery system planned for Dalian China by UET's sister company Rongke will soon be the largest battery in the world at 200MW/800MWh.
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