Talk:Flow battery

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[edit] EROEI for storage

1. What is the overall efficiency of these batteries, including

• Amount of energy discharged divided by amount of energy stored?
• 1 - (Amount of energy the energy required to construct one of these batteries divided by the energy storage lifetime capacity)?

2. What are the natural resources required as raw materials and what is the world supply of these resources? Any of the supplies in volatile regions?

3. What are the costs of these batteries on a kWh of storage basis?

4. What are the non-linear considerations for the answers to the above?

Thanks,

Skyemoor 13:01, 18 January 2007 (UTC)

If anyone can answer any of the above questions, then that would be better than nothing. Skyemoor 18:54, 22 January 2007 (UTC)

The questions are rather general. A zinc bromine system has rather different characteristics to an all-uranium flow battery for example. The furthest developed systems are probably the zinc-bromine, vanadium redox and polysulphide-polyhalide. Other systems have been abandonned because of poor efficiency, high cost or great complexity such as the iron-chromium and zinc-chlorine hydrate. Laboratory round-trip efficiencies for some systems have been quoted at 80 - 90%. However, these figures may well be reduced in practice, depending on duty cycle and operating temperatures. Raw materials are very system specific. The reactors and fluid lines are typically made of inexpensive, readily-available polymers and elastomers. Redox flow batteries generally become more economically viable as the ratio of energy to power increases (more electrloyte to reactors). Ahw001 07:13, 6 March 2007 (UTC)

[edit] External Links

I added a link to vrbpower.com a manufacturer of these types of batteries. It was removed as spam. I disagree with that. This is not exactly a well known topic and a link to one of the few big names in the field would help give some context. —The preceding unsigned comment was added by 149.99.63.218 (talk) 23:24, 8 March 2007 (UTC).

Wikipedia is NOT a business directory. The article is not about that company. A link to their website does not add to the enclopedic content and is not appropriate per the external links guidelines. VRB Power Systems Inc. spammed before, and their links were removed, not only by me. Interesting that only 6 days after, a corporate performance training company, also Canadian, inserts the same links again. Femto 13:03, 9 March 2007 (UTC)

Very well I accept your argument, I hadn't read the external link guidelines. But please don't start with the conspiracy theories. I'm not affiliated with them, I read about them in the Clean Break clean tech blog.--149.99.63.218 19:56, 14 March 2007 (UTC)