ToughButterCup Posted July 5, 2022 Share Posted July 5, 2022 Was the little boy right, but correct about the wrong thing? Those Finns, frightfully clever lot eh? https://www.bbc.com/news/science-environment-61996520 Got any spare builders sand lads? (OK - and lasses - @canalsiderenovation ) Link to comment Share on other sites More sharing options...
ProDave Posted July 5, 2022 Share Posted July 5, 2022 Is it just me, or should the term "battery" be restricted just to something that stores or produces electricity? This thing described is a THERMAL STORE. Yes, a big night storage heater. It may be heated by electric resistance heating, but the stored energy is taken out as hot water not as electricity, so I believe the term "battery" is wrong for this. Link to comment Share on other sites More sharing options...
JohnMo Posted July 5, 2022 Share Posted July 5, 2022 At 500 degC you can make high quality steam and drive a steam turbine generator - electricity. Link to comment Share on other sites More sharing options...
SteamyTea Posted July 5, 2022 Share Posted July 5, 2022 (edited) 27 minutes ago, ProDave said: Is it just me, or should the term "battery" be restricted just to something that stores or produces electricity? Artillery battery? It is not the medium that the energy is stored in (I used granite chips for my dissertation), it is the insulation methods that is the interesting bit (I used polystyrene). Sand has a conductivity of 0.25 W/m.K and a SHC of 830 kJ/kg.K Granite has a conductivity of 3.2 W/m.K and a SHC of 790 kJ/kg.K Polystyrene has a conductivity of 0.12 W/m.K and a SHC of 1100 kJ/kg.K To quote from the BBC article. "One of the big challenges now is whether the technology can be scaled up to really make a difference - and will the developers be able to use it to get electricity out as well as heat?" Too right. Edited July 5, 2022 by SteamyTea Link to comment Share on other sites More sharing options...
jack Posted July 5, 2022 Share Posted July 5, 2022 39 minutes ago, ProDave said: Is it just me, or should the term "battery" be restricted just to something that stores or produces electricity? I doubt you're the only one who thinks this, but I disagree. "Battery" has a long history of use in relation to thermal storage. Chemical storage devices of the type you're referring to are only called batteries because they're formed from a battery of cells. 1 Link to comment Share on other sites More sharing options...
Pocster Posted July 5, 2022 Share Posted July 5, 2022 Definitely a project for @Onoff 🙄🙄🙄🙄🙄🙄🙄🙄 Link to comment Share on other sites More sharing options...
SteamyTea Posted July 5, 2022 Share Posted July 5, 2022 https://polarnightenergy.fi/ A website full of puff. 99% efficiency. Maybe during the first °C of storage. I am surprised this kind of nonsense is reported. If it was possible to store any material at 500°C+ for any reasonable amount of time, then the "energy crisis" would be over. Link to comment Share on other sites More sharing options...
Onoff Posted July 5, 2022 Share Posted July 5, 2022 21 minutes ago, pocster said: Definitely a project for @Onoff 🙄🙄🙄🙄🙄🙄🙄🙄 Old news, I proposed something similar using the "stays hot forever" McDonald's apple pie filling, some time ago. Again the multinationals made me an offer to keep the thing quite...or it might have been someone just suggested I keep quiet... 1 Link to comment Share on other sites More sharing options...
Radian Posted July 5, 2022 Share Posted July 5, 2022 Oven baked tomatoes. You can get a scalded mouth eating those half an hour after they're served 🙄 Link to comment Share on other sites More sharing options...
Onoff Posted July 5, 2022 Share Posted July 5, 2022 Microwaved croissants. They hold scalding steam for ages. Scars to prove it. Link to comment Share on other sites More sharing options...
SteamyTea Posted July 5, 2022 Share Posted July 5, 2022 Just now, Onoff said: scalding steam Latent heat of fusion. It gives up many times the normal amount of stored energy. Now, if only there was a cheap, easily available, material that could phase change at relatively low temperatures, say 100°C, and then could take extra energy up to say, 10 bar. Could pipe that though an engine easily enough I would have thought. Link to comment Share on other sites More sharing options...
Pocster Posted July 5, 2022 Share Posted July 5, 2022 My pants . They hold (m/h)eat like you wouldn’t believe! Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 5, 2022 Author Share Posted July 5, 2022 (edited) Made any jam recently? ChristOnAbike, heated sugar holds onto heat longer than @pocster to walk-on-glass. Edited July 5, 2022 by ToughButterCup Link to comment Share on other sites More sharing options...
Pocster Posted July 5, 2022 Share Posted July 5, 2022 28 minutes ago, ToughButterCup said: Made any jam recently? Was that aimed at me ? . Jam in my pants …. Plenty of 👍😛 Link to comment Share on other sites More sharing options...
canalsiderenovation Posted July 6, 2022 Share Posted July 6, 2022 On 05/07/2022 at 08:20, ToughButterCup said: Got any spare builders sand lads? (OK - and lasses - @canalsiderenovation ) Nope but I have about 25+ tonnes of crushed concrete we did at the weekend . . . and I fractured my finger! VID_353500824_082317_248.mp4 Link to comment Share on other sites More sharing options...
Simplysimon Posted July 6, 2022 Share Posted July 6, 2022 On 05/07/2022 at 08:55, ProDave said: "battery" be restricted just to something that stores or produces electricity? Voltaic pile, now battery pile. i can see who's going to 'pile' into this one...... Link to comment Share on other sites More sharing options...
SteamyTea Posted July 6, 2022 Share Posted July 6, 2022 7 minutes ago, Simplysimon said: Voltaic pile, now battery pile Chalfont St Giles. Link to comment Share on other sites More sharing options...
Onoff Posted July 6, 2022 Share Posted July 6, 2022 47 minutes ago, canalsiderenovation said: Stoned? 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted July 7, 2022 Author Share Posted July 7, 2022 On 05/07/2022 at 17:18, pocster said: Was that aimed at me ? I'm too polite to consider your withers ..... 9 hours ago, Onoff said: Stoned? Naaaah, thats the Delivery Man. Poor lad. Link to comment Share on other sites More sharing options...
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