A crane is brought for the construction of the bridge over the running water and the structural elements of the bridge are placed with a crane. The iron barrier weighing 10 tons was heat treated and its temperature was raised up to 97 °C before being placed. An accident occurred during the hoist and the iron barrier fell into water at 7° C. When the iron barrier is removed from the water after a long time, it has been observed that its temperature is the same as the water. Calculate the entropy change in the iron barrier, the entropy change in water, and the entropy generation caused by these changes. For iron barrier, you can accept specific heat capacity as 0.45 kj / kg.K.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
A crane is brought for the construction of the bridge over the running water and the structural elements of the bridge are placed with a crane. The iron barrier weighing 10 tons was heat treated and its temperature was raised up to 97 °C before being placed. An accident occurred during the hoist and the iron barrier fell into water at 7° C. When the iron barrier is removed from the water after a long time, it has been observed that its temperature is the same as the water. Calculate the entropy change in the iron barrier, the entropy change in water, and the entropy generation caused by these changes. For iron barrier, you can accept specific heat capacity as 0.45 kj / kg.K.
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