In a Stirling engine, the regenerator is an internal heat exchanger and temporary heat store placed between the hot and cold spaces such that the working fluid passes through it first in one direction then the other, taking heat from the fluid in one direction, and returning it in the other. Their selling point was that unlike steam engines, they could be operated safely by anybody capable of managing a fire. Cancel Confirm. Amontons was later followed by Sir George Cayley. Model Stirling Engines.
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