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Do I calculate right that plain water stores energy around 0.2 MJ/kg when heated by 50 degrees celsius? (Specific heat is 4 J/gK) If I am right, ot feels like i
by beefield 8y ago
Do I calculate right that plain water stores energy around 0.2 MJ/kg when heated by 50 degrees celsius? (Specific heat is 4 J/gK) If I am right, ot feels like it would likely be cheaper to just make seasonal heat storages with water.
- Someone 8y agohttps://www.ecovat.eu/?lang=en https://www.ecovat.eu/?lang=en aims for water of 90 degrees Celsius (a 70 degree difference with room temperature), and claims heat can be stored with 95% efficiency (possibly exaggerated; the site also says ‘over 90%’) for more than 6 months in a tank 16m deep and 13m in diameter.
- hinkley 8y agoAnd if it leaks into the groundwater you only have to worry about the anti fouling agents you put into the tank, and anything leaching out of the tank lining.