![]() ![]() Fuel combustion releases chemical energy that heat transfers throughout the gas in a cylinder. Gasoline and diesel engines, jet engines, and steam turbines that generate electricity are all examples of heat engines.įigure 12.13 illustrates one of the ways in which heat transfers energy to do work. A heat engine does exactly this-it makes use of the properties of thermodynamics to transform heat into work. One of the most important things we can do with heat is to use it to do work for us. In this section, we’ll explore how heat engines, heat pumps, and refrigerators operate in terms of the laws of thermodynamics. ![]() Heat Engines, Heat Pumps, and Refrigerators Ask students whether they can explain the limits on efficiency in terms of what they have now learned. Review the ideal gas law, laws of thermodynamics, and entropy. Return again to the discussion of efficiency that was begun at the start of the module.
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