A region in space containing a quantity of gas or vapour
System
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A system in which the gas or vapour moves into, out of or through the region
Open system
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A system in which the gas or vapour remains within the region
Closed system
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A change from one state to another
Process
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A change that occurs at a constant temperature
Isothermal
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A change in which no heat passes into or out of the gas
Adiabatic
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The percentage of the input work that is converted to useful output work
Efficiency
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The power expended in overcoming frictional forces between the moving parts of the engine and the viscous resistances of the lubricator oil and cooling water
Friction power
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How well an engine converts chemical energy in the fuel into useful output power in the engine
Thermal efficiency
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Excess thermal energy is harnessed for other purposes such as space heating for houses, factories, business units or greenhouses
Combined heat and power
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An engine in which net work is done on the working fluid
Reversed heat engine
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Function is to extract as much energy as possible from the cold reservoir per joule of work done
Refrigerator
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Function is to supply as much energy to the hot reservoir as possible per joule of work done
Heat pump
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How good a device is at converting energy into heat transfer
Coefficient of performance
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Other cards in this set
Card 2
Front
A system in which the gas or vapour moves into, out of or through the region
Back
Open system
Card 3
Front
A system in which the gas or vapour remains within the region
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