An inventor claims that a new refrigerator can operate between -15 o C and 150 o C while removing 2200 W of heat rate from the sink and using 2000 W of power. Use the concept of entropy generation to determine if this device violates the second law of thermodynamics or no

Q: (d) A heat engine operates by taking heat from a thermal reservoir at 1000°C and rejecting heat to a…

A: Given Data: The temperature of the thermal reservoir source is TH = 1000°C The temperature of the…

Q: How did Clausius modify Carnot’s original analysis of the ideal heat engine?

A:

Q: An engine works between two reservoirs at 967 K and 293 K, respectively. It takes 2.50 kJ of heat…

A:

Q: Two identical metal blocks, each weighing 25 kg and having a specific heat of 0.4 kJ/kg, are first…

A: Let us consider that the final temperature of the higher temperature block as T_1, and lower…

Q: Imagine you are asked to design a thermal engine that is to operate between thermal reservoirs at 10…

A:

Q: A completely reversible heat pump produces heat at a rate of 300 kW to warm a house maintained at…

A: Given Heat produced= 300 kW Temperature of the house = 24o C = 297K Temperature of the ambient = 7o…

Q: Explain the Reversible work relations for steady-flow and closed systems.

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Q: Show that no real heat engine operating between two reservoirs of temperature T h and T c could ever…

A: No real heat engine operating between two reservoirs could ever be more efficient than a Carnot…

Q: Refrigerant 134-a enters the evaporator coils placed at the back of the freezer section of a…

A: ◆ The mass flow rate of the refrigerant is 0.016326 kg/sec. ◆ The rate of heat rejected to the…

Q: A cylindrical container, 6m in radius and 3m long, with a lid holds 1.657 x 107 moles of water at 30…

A: Givenr=6mL=3mn=1.657×107 molesT1=30oCW=3000 kWT2=50oCQ=50 kW/m2ρ=1 g/cm3Cp=4.18 kJ/kgoC

Q: An inventor claims that a new fridge can operate between -15 degree Celsius and 150 degree C while…

A: Given:T2=-15°C =258 KT1=150°C =423 KHeat taken from sink,Q2=2200 WWork input,W=2000 W

Q: Refrigerant 134-a enters the evaporator coils placed at the back of the freezer section of a…

A:

Q: Explain totally and internally reversible heat transfer processes.

A: Internally reversible heat transfer processes are the heat transfer processes in which there are no…

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.