Energy storage for the Tasmanian Project

3 02 2016

I’ve done it.  I’ve ordered my Nickel Iron batteries and Victron charger/inverter. Once I’ve ironcoreascertained whether or not I can afford it, I will purchase a second Victron for future backup, fingers crossed the economy (and our funds!) hold out long enough.  The batteries, a 48V 200Ah bank, won’t get here from Russia for another six or so weeks, and when they do, I’ll post more about the installation.

victron

Victron inverter/charger

What really got me started re posting this was the extraordinary episode of Catalyst aired on ABC TV last night….

Anyone watching this will have been totally taken over by techno utopianism of the highest quality.  Dr Jonica Newby is a veterinarian, and unfortunately doesn’t seem to know the difference between power and energy, but maybe I’m just splitting hairs….. it was nonetheless frustrating to constantly hear battery banks rated in kW rather than kWh, big difference….

The “we’ll be saved by these batteries” gushing coming from everyone’s mouths in this show was only interrupted for a few seconds when one commentator expressed his doubt over the financial viability of the very first Tesla power wall installed in Australia.  He asked how this was remotely viable when the payback was 23 years, and the equipment was only warranted for 10? Which was swiftly glossed over for the remaining 25 minutes and never mentioned again…..

Worse, the evangelical fervour used to extol the virtues of Lithium Ion batteries, a technology that I am certain will disappoint a lot of owners in the future, bordered on religion……  think back to how long batteries in your laptops and cell phones last, and wonder how long before all that stuff ends up on landfill.

From Computer World:

Dell plans to recycle however many of the 4.1 million recalled batteries that customers turn in (see Dell battery recall not likely to have big environmental impact), but what happens to the other 2 billion lithium ion batteries which will be sold this year? Most will last for 300 to 500 full recharges (one to three years of use) before failing and ending up in your local municipal landfill or incinerator.

Europeans have a dimmer view of landfilling lithium ion batteries. “There is always potential contamination to water because they contain metals,” says Daniel Cheret, general manager at Belgium-based Umicore Recycling Solutions. The bigger issue is a moral one: the products have a recycling value, so throwing away 2 billion batteries a year is just plain wasteful – especially when so many American landfills are running out of space. “It’s a pity to landfill this material that you could recover,” Charet says. He estimates that between 8,000 and 9,000 tons of cobalt is used in the manufacture of lithium ion batteries each year. Each battery contains 10 to 13% cobalt by weight. Umicore recyles all four metals used in lithium ion batteries.

The reason why more lithium ion batteries aren’t recycled boils down to simple economics: the scrap value of batteries doesn’t amount to much – perhaps $100 per ton, Cheret says. In contrast, the cost of collecting, sorting and shipping used batteries to a recycler exceeds the scrap value, so batteries tend to be thrown away. Unfortunately, the market does not factor in the social cost of disposal, nor does it factor in the fact that recycling metals such as cobalt has a much lower economic and environmental cost than mining raw materials. So we throw them away by the millions.

To be fair, Professor Thomas Maschmeyer also introduced zinc bromide battery technology to the show, and it sounds impressive, with very fast charging times, which by the way is irrelevant to home battery charging. Amusingly, our veterinarian presenter had never heard of gel cells and looked mightily impressed with that too.  It’s easy to be impressed with technology you’re not familiar with, or don’t understand I guess….. and a timeline of 10 or 20 years was mentioned, as if we actually have 10 or 20 years to solve our climate and energy predicaments.

As was to be expected, the main theme of the show was all about how much money could be made from this, not how it was going to save us from climate change or anything else important.  I could not stop laughing when, poised over a computer monitor, Josh Byrne of Gardening Australia fame makes five cents from exporting battery power to his electricity supplier…… what a waste of batteries. How anyone can think that shortening the life of one’s battery bank for five cents is worthwhile truly staggers me. Especially when the service provider then sells it to his neighbours for four times that much!

To his credit, I hasten to add, Josh Byrne has built a 10 star energy efficient house which, powered by just 3kW (when just about everyone these days installs five…) appears to be managing almost as well as we used to in Queensland. I think a program devoted to this aspect of his energy management would be far more useful than the one being discussed at the moment…

Josh House 3D render

Josh’s house project

There was, as usual, much talk about how we could go fossil fuel free, without any acknowledgement whatsoever that all the stuff that goes into these magic boxes of tricks have to be mined, refined, shipped, manufactured, and installed, using….. fossil fuels of course!!  Nor was there any mention of where the money to make all this stuff would come from.

Fascinatingly, the ‘big three’ electricity suppliers in Australia are getting in on the act. Why they would do this when they are constantly expressing their anti renewables positions is puzzling.  Could it be more ‘we’re greener than thou’?

I remain totally baffled by this race to the bottom.

UPDATE:

I have just been pointed to this paper written by Peter J. DeMar, Battery Research and Testing, Inc. Oswego, NY, USA

pjd@batteryresearch.com

They actually managed to revive 85+ year old NiFe batteries to close to their original capacity, even though most of them had been abused beyond belief….. they’re going to keep them going for another fifteen years, just to show if Edison’s original claim that they would last 100 years isn’t mere marketing…..

They concluded…….:

This find of these old Thomas Edison Nickel-Iron cells has been quite an education for us at Battery Research and Testing, as our work for the past 29 years has been primarily with lead acid and some Nickel-Cadmium, but with nothing of the age of these cells. In fact the oldest lead acid cells that we have load tested and that were still functional were old Exide Manchex strings that were 42 years old, and it appears that the only existing lead acid cells that might be able to be functional at 40 years of age are the Bell developed round cells for Telecom applications.

What we have learned has opened up our minds to explore possibilities for this design long life design cell. It would sure seem that any site that has a requirement for a long life battery that will tolerate abusive conditions would consider the total life costs of these type cells and see which works out to be the most cost effective.

http://www.nickel-iron-battery.com/Edison%20Cell%20Rejuvenation%2085%20yr-old%2013.%20DeMar.pdf

 

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