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The problem is that you need this energy when you want to provide electricity from the storage, which isn't the moment where energy in general is cheap. The po
by littlestymaar 3y ago
The problem is that you need this energy when you want to provide electricity from the storage, which isn't the moment where energy in general is cheap.
The positive aspect of such a system is that the thermal energy you need is not subject to Carnot's law, so the temperature of the heat source doesn't matter unlike most use of thermal energy (and that's why you can use waste thermal energy in the first place) but you still need a way to get that energy.
- bluGill 3y agoThe air still is there whes you need it. The thermal energy is lost but the pressure isn't.
- littlestymaar 3y agoYes, but without the thermal energy you cannot depressurize it in a turbine, because it gets so cold the air will start condensing, and then you'll have droplets of nitrogen destroying your turbines!