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An isentropic energy storage system is heated to storage temperature using a heat pump.
The stored energy is recovered when needed by a power plant.
The purpose of this is to avoid disadvantages related to thermodynamic efficiency.
Problem 1: The Carnot cycle, an ideal heat engine, operates with isotherms.
However, at the same temperature, no heat transfer occurs;
every small temperature difference is a loss.
Problem 2: The buffer containing the ambient temperature would have to be enormous.
These problems can be circumvented by filling the storage system in summer and using the energy only in winter.
The "theory of the isentropic world" does not have such problems.
An infinite world has an infinite buffer for the ambient temperature.
The heat transfer is not isothermal, but statistical, at a sufficiently large radius.
Ludwig Resch
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