blackcab Posted July 6, 2022 Share Posted July 6, 2022 I found this video about a sand battery quite interesting. I know with Thailand the main issue is cooling things down and not heating them up, but still, I think the video is worth a watch. 2 Link to comment Share on other sites More sharing options...
sammieuk1 Posted July 6, 2022 Share Posted July 6, 2022 The clever Finns have made a sand battery that heats up to 500 degrees and lasts for months using summer heat from solar and wind to store for the winter looks like a very cheap way of green power when scaled up ???? Link to comment Share on other sites More sharing options...
sezze Posted July 8, 2022 Share Posted July 8, 2022 On 7/6/2022 at 3:34 PM, sammieuk1 said: The clever Finns have made a sand battery that heats up to 500 degrees and lasts for months using summer heat from solar and wind to store for the winter looks like a very cheap way of green power when scaled up ???? Some commercial solar farms already use similar tech to heat up salt , creating 24h solar energy ( solar to heat , heat to hot salt melted , melted salt to water , water to steam , and steam to power a classic turbine ) . This is possible in lower scale also , even with less heat , using sand ( you lose a lot of power since most energy is stored in phase shifts, solid to liquid and liquid to gas) . However , scaling it down also means scaling down funds . The more commercial it gets , to more funds are available to make it usable and productive , in case of electricity production but also in money production . For home markets , this is how it fails. Nr1 these systems are complex ( well more complex then a boiler or air conditioner , i work chem process operator so for me this is peanuts ) , so not useful for home use . Nr 2 these systems got many potential failures , see nr 1 . Nr 3 since they are more complex , they do involve more costs in forms of initial investment and in forms of maintenance . Both are out of the question for home owners . I am all for the energy neutral or even positive homes , and yes , we can do something ( temporary , since human population keeps growing) to stop increased CO2 emissions . This however is not for home use . Do however not worry , there are new systems/batteries underway . Storing energy into heat is not for all people , it is only for company/commercial use , while it is a viable source . I however know that most people do not have all the knowledge i got , so , no heat is no resource for normal people . 1 Link to comment Share on other sites More sharing options...
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