You are right !
But they use in some solar power plants, as storage, due reduced cost compared with batteries.
The salt don' give back all it had stored, but if it keep hot for 24 hours it would be easier to heat eat to the usefull point than heat it form zero (like the first day of use)
Quote:
Originally Posted by aerohead
*The eutectic salt would not give back all that it had stored.
*Any heat loss of the stored energy would be an issue.
*There would be heat loss at the boiler heat exchanger.
*There would be losses across the turbo-generator.
*There would be losses at the cooling tower heat exchanger.
*There would be inefficiencies associated with the cooling tower fan
*Losses at any working fluid pumps.
I don't think you could beat the efficiency of existing battery technology.
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