4. Find the change in internal energy associated with the following processes (kJ/kg): (a) Steam at...

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4. Find the change in internal energy associated with the following processes (kJ/kg): (a) Steam at 100 kPa, 120C is heated and compressed to 200 kPa, 400C (b) Air is cooled in an automobile intercooler from 150C to 60C, all at 100 kPa. Find the ratio of the density after the cooling to that before the cooling. (Goal: Higher density means we can push more air through the engine, resulting in increased power output). (c) For Problem 2(c), (i) find the final temperature, using PV/T=constant, (ii) then find the change in internal energy (kJ/kg), and finally (iii) find the amount of heat that was transferred to the balloon (kJ). (d) At 100 kPa, water boils at about 100C. At Mt. Everest, the pressure is about 35 kPa. Find (i) the boiling point at Mt. Everest, and (ii) the change in internal energy associated with boiling at 100 kPa vs. 35 kPa. 4. Find the change in internal energy associated with the following processes (kJ/kg): (a) Steam at 100 kPa, 120C is heated and compressed to 200 kPa, 400C (b) Air is cooled in an automobile intercooler from 150C to 60C, all at 100 kPa. Find the ratio of the density after the cooling to that before the cooling. (Goal: Higher density means we can push more air through the engine, resulting in increased power output). (c) For Problem 2(c), (i) find the final temperature, using PV/T=constant, (ii) then find the change in internal energy (kJ/kg), and finally (iii) find the amount of heat that was transferred to the balloon (kJ). (d) At 100 kPa, water boils at about 100C. At Mt. Everest, the pressure is about 35 kPa. Find (i) the boiling point at Mt. Everest, and (ii) the change in internal energy associated with boiling at 100 kPa vs. 35 kPa.

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The image contains a question with four distinct parts a b c and d each dealing with the change in internal energy for different thermodynamic processes To provide assistance we need to address each p... View the full answer