Real life example for second law of thermodynamics

Is there any real life example that can illustrate the Kelvin - Planck's statement of the second law of thermodynamics?




As pointed out in the comments, your question is logically problematic. The only way to practically demonstrate that something is impossible is to show that every conceivable attempt fails. This is one reason that theory is used, because otherwise you could spend an infinite amount of time trying different experiments and still fail to show it's impossible. To contradict a general statement, all that is required is one counter-example. However, there are plenty of real world examples where the efficiency (1 - work out/heat in) is demonstrated to be far less than 100%, and there are (of course) no known counter-examples. See <https://en.wikipedia.org/wiki/Heat_engine> for a lot of examples. Contrast the statement of the 2nd Law with the statement that "Man cannot fly". It took tens of thousands of years to build a machine which enabled man to fly (1961) see <https://en.wikipedia.org/wiki/Human-powered_aircraft#First_flights>, but once it had been documented the statement became false. 


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