Browse Mechanical Engineering by laws of thermodynamics
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Life contributes to a net increase in the entropy of the universe and thereby heat death.
But is this still true when a living thing dies? Also presented here is a popular seventeen word summary of the laws of thermodynamics.
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The third law of thermodynamics is least used among the three laws of thermodynamics. It says that the entropy of the pure crystal becomes zero at absolute zero temperature or zero degree Kelvin. Let us see the details about absolute zero temperature, entropy and the law.
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It is said that Stirling engine, which works on the principle of Stirling cycle, can give the maximum possible efficiency and they create least pollution since they use gas as the working fluid. Even then they are not used in the cars, why?
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When the substance is heated its temperature increases and when the susbtance is cooled its temperature reduces. The amount of heat required to added to the susbtance to increase it temperature by unit degree is called as the specific heat of the susbtance.
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The two systems are said to be in thermodynamic equilibrium wih each other when they are in mechanical, chemical and thermal equilibrium with each other. Here are various types of equilibrium and the conditions for thermodynamic equilibrium of the system.
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The two systems are said to be in thermodynamic equilibrium wih each other when they are in mechanical, chemical and thermal equilibrium with each other. Here are various types of equilibrium and the conditions for thermodynamic equilibrium of the system.
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The second law of thermodynamics is considered to be the most fundamental law of science. The foundation stone of this law was laid down by young french scientist Sadi Carnot in the year 1824. Let us see how his findings led to invention of second law of thermodynamics.
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The second law of thermodynamics is considered to be the most fundamental law of science. It explains not only the working of engines, refrigerators and other equipments used in our daily life, but also highly advanced theories like big bang, expansion of universe, heat death etc.
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The second law of thermodynamics is considered to be the most fundamental law of science. It explains not only the working of engines, refrigerators and other equipments used in our daily life, but also highly advanced theories like big bang, expansion of universe, heat death etc.
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To carry out the analysis of the heat engines, the concept of air standard cycles was conceived. In these cycles certain mass of air is considered to be working in the thermodynamic cycle.The two most commonly used air standard cycles are Otto cycle and Diesel cycle.
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