Heat management in gas switching combustion for power production with integrated CO2 capture

Gas Switching Combustion (GSC) is a promising new process concept for energy efficient power production with integrated CO2 capture. In comparison to conventional Chemical Looping Combustion (CLC) carried out in fluidized beds, the GSC concept will be substantially easier to design and scale up, especially under pressurized conditions. One potential drawback of the GSC concept is the gradual temperature variation over the transient process cycle which leads to a drop in electric efficiency of the plant. This article investigates heat management strategies to mitigate this issue both through simulations and experiments. Promising results are reported both through the dilution of air with nitrogen and through the concentrated injection of air.