What is a heat engine in engineering and thermodynamics?
Q: What is a heat engine in engineering and thermodynamics?
A: A heat engine is a device that converts heat energy into mechanical work by utilizing the temperature difference between a hot "source" and a cold "sink."
Q: How does a heat engine work?
A: Heat is transferred from the source through the working body of the engine to the sink, and in this process, some of the heat is converted to work using the properties of the gas or liquid inside the engine.
Q: What are the thermodynamic cycles associated with heat engines?
A: There are many kinds of heat engines, each with a specific thermodynamic cycle. They are named after the thermodynamic cycle they use, such as the Carnot cycle.
Q: What are some examples of heat engines named after everyday objects?
A: Some examples of heat engines named after everyday objects include gasoline/petrol engines, turbine engines, and steam engines.
Q: How do internal combustion engines generate heat?
A: Internal combustion engines generate heat within the engine itself.
Q: Can heat engines be open to the air?
A: Yes, heat engines can be open to the air or sealed and closed off to the outside. This is called an open or closed cycle.
Q: Do all heat engines absorb heat from an external source?
A: No, while some heat engines may absorb heat from an external source, others can generate heat within the engine itself.
