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The article quoted that South32 in WA is already inporting coal from abroad.They are going to import coal from Indonesia apparently.
I have previously highlighted a UK company called RheEnergise which has developed a pumped hydro solution that is far more cost effective and efficient than traditional systems. Long story short they have developed a fluid that is 2.5 times heavier than water as the energy medium. This changes all the cost and engineering figures dramatically.
It offers an opportunity to develop hundreds of local pumped hydro battery systems at a substantial discount to traditional systems. The company is steadily progressing its operations.
Check out it.
RheEnergise High-Density Hydro
RheEnergise Pumped Energy Storage: Lowering the levelised cost of energy storage. Increasing the availability of sites. Exceptionally fast reaction times. Long Duration. Long life. Highly flexible. High-Density Hydro®www.rheenergise.com
salt solution can do that (up to slightly above 1.3 freshwater density), imagine the outcry with a lake full of brineWill be interesting to see what our resident expert says.
was more tongue in cheek but we are cooling nuclear reactors with melted sodium so the sky is the limit!!!Can't see anyone using mercury though!
RheEnergise have clearly developed a product that works to their satisfaction as a medium for small pumped hydro projects. The pipes are all enclosed and in fact they propose laying them underground. Their motors are designed to work with the patented material.So far as alternatives to water in pumped hydro schemes are concerned, the basic issues that come to mind in a technical sense are:
Abrasion - at high head (pressure) any silt present in the water is undesirable.
Constantly being sandblasted at high pressure doesn't exactly extend the lifespan of a turbine runner but at lower heads it's far less of an issue. There are low head stations in Europe that basically have mud running through them for example, well it's filthy looking water at least, but when there's only a few metres of head that doesn't really matter. Very different if it's hundreds of metres. So if the head is high enough then abrasion of any non-water material is a potential issue.
Another is corrosion and compatibility with construction materials. Bearing in mind the presence of multiple materials - epoxy coated steel, stainless steel, concrete, reinforced plastic and so on. Heck can even use wood if someone's keen to build that way.
Another is environmental. Conventional approaches to hydro construction don't obsess over avoiding all leakage simply because, well, it's only water after all. Hence the use of open canals, unlined tunnels and so on - they're good enough and if a minor amount is lost then no big deal. Very different it the fluid is highly valuable and/or toxic.
Viscosity and frictional losses another issue since that'll impact efficiency. Bearing in mind that all the conventional friction modified coatings were developed specifically with water in mind, they weren't considering anything else.
Subject to all that though, I see no reason why it couldn't be done. I'm not saying it's a bad idea, just pointing out the things which need to be considered and that these will be substance specific.
Then there's the more tricky stuff. Conventional modern hydro machines are vertical axis, turbine on the bottom and alternator above, using rather large but conventional bearings lubricated with petroleum-based lubricants. There are alternative approaches however, like centering the shaft using water pressure and doing away with the oil and grease for the avoidance of metal on metal contact, an approach that tends to raise eyebrows but it's certainly doable.
I wouldn't expect anyone to try that with an alternative non-water fluid, at least not in a hurry without some serious testing, but it's another issue.
Can't see anyone using mercury though!
If it works, it will sell.RheEnergise have clearly developed a product that works to their satisfaction as a medium for small pumped hydro projects. The pipes are all enclosed and in fact they propose laying them underground. Their motors are designed to work with the patented material.
The fluid has been independently tested and is non toxic.
So old school Mr sptrawler, if it is woke enough it will sell and be subsidized and favored enough to be successfulIf it works, it will sell.
If it doesn't, it wont.
Not aiming to shoot anyone down but as with all of this, time will tell.RheEnergise have clearly developed a product that works to their satisfaction as a medium for small pumped hydro projects. The pipes are all enclosed and in fact they propose laying them underground. Their motors are designed to work with the patented material.
The fluid has been independently tested and is non toxic.
Yes, SF6 was hugely popular for HV switching and now it's banned as it is 25000 times more potent than CO2.Not aiming to shoot anyone down but as with all of this, time will tell.
It's all great that it's non-toxic but so were a lot of things until someone worked out that they actually do have issues when they enter the environment. There's a pretty long list of things that were just fine "on paper" until someone found that in practice there's a serious problem.
Hence my cautious approach. It might be fine but 'm reserving judgement until it's up and running and studies are done. Given the nature of it, the potential for problems is at least plausibly real.
No frog, it is all getting to the pointy end, BS is getting harder to sell as the fossil fueled stations are closing.So old school Mr sptrawler, if it is woke enough it will sell and be subsidized and favored enough to be successful
If it just works, ....this is not enough...
Even the RBA is now starting to pop the bubble, that the price of power will reduce as we transition to renewables, people just have to accept power is going to get very expensive:No frog, it is all getting to the pointy end, BS is getting harder to sell as the fossil fueled stations are closing.
Even the RBA is now starting to pop the bubble, that the price of power will reduce as we transition to renewables, people just have to accept power is going to get very expensive:
Reserve Bank of Australia governor Philip Lowe has issued a blunt warning that the renewable energy transition would probably spark higher and more volatile energy prices in the years ahead
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