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Author Topic: Highview Power developing 50MW/250MWh plant.  (Read 255 times)
stannn
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« on: October 21, 2019, 07:24:02 PM »

https://www.businessgreen.com/bg/news/3082866/liquid-air-highview-power-debuts-plan-to-build-europes-largest-storage-system

https://www.rechargenews.com/transition/1866656/first-commercial-liquid-air-storage-project-gets-go-ahead
« Last Edit: October 21, 2019, 07:32:00 PM by stannn » Logged

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« Reply #1 on: October 22, 2019, 09:31:42 AM »

What's the round-trip efficiency of this type of storage? How does it compare to pumped hydro and batteries?
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« Reply #2 on: October 22, 2019, 05:48:03 PM »

https://www.bbc.co.uk/news/business-50140110
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« Reply #3 on: October 22, 2019, 07:38:24 PM »

In order to drive the phase change from liquid to gas there must be an energy input. Given the rating of the equipment this is not trivial. If the plan is to use the atmosphere then the heat exchangers are going to be rather large, and an interesting microclimate.
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« Reply #4 on: October 22, 2019, 08:12:44 PM »

What's the round-trip efficiency of this type of storage? How does it compare to pumped hydro and batteries?

myeah, so, depends on who you ask. Somewhere between 17% and 70%. The high number assumes loads of waste heat available, when the time comes to take the exergy out of storage, and that waste heat isn't calculated in the efficiency.

The attractive thing about this type of storage is its modularity. The three key parameters - input power, energy stored, and output power - can each be adjusted independently of the other two. And they can easily be retrofitted to expand them.

And, as long as they can keep the tanks cold, the energy can be stored for weeks.
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smegal
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« Reply #5 on: October 22, 2019, 10:22:44 PM »

Quote from: azps link=topic=31102.msg349572#msg349572 date=157177156
And, as long as they can keep the tanks cold, the energy can be stored for weeks.
[/quote

For LNG, we design for 0.1% per day boil off, so LA could be of a similar order (probably slightly worse due to being colder and economies of scale for tanks)

It's good to see Highview doing some more. I followed them quite closely back n 2012 while writing a "5 minute guide" to energy storage at work. Currently re-assessing the figures for this as we speak.
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Countrypaul
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« Reply #6 on: October 23, 2019, 12:12:09 AM »

One thing that intrigues me about this is how they ensure that when they gasify the LA that they ensure the get a mix and not end with having to deal with a nearly pure oxygen liquid at the end?
I have never had a problem with liquid N2 but knew of at least one experimen that caused a fire as the liquid N2 evapourated but left liquid O2 behind.
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