Kelvin–Planck statement

The Kelvin–Planck statement (or the heat engine statement) of the second law of thermodynamics states that it is impossible to devise a cyclically operating device, the sole effect of which is to absorb energy in the form of heat from a single thermal reservoir and to deliver an equivalent amount of work.^[1] This implies that it is impossible to build a heat engine that has 100% thermal efficiency.^[2]

References

^ Rao, Y. V. C. Chemical Engineering Thermodynamics. Universities Press. p. 158. ISBN 978-81-7371-048-3.
^ Young, Hugh D.; Freedman, Roger A. (2008). University Physics. Vol. 1 (12 ed.). Pearson Education. ISBN 978-0-321-50125-7.

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[Rao-1] Rao, Y. V. C. Chemical Engineering Thermodynamics. Universities Press. p. 158. ISBN 978-81-7371-048-3.

[Young&Freedman-2] Young, Hugh D.; Freedman, Roger A. (2008). University Physics. Vol. 1 (12 ed.). Pearson Education. ISBN 978-0-321-50125-7.

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