A completely reversible heat pump produces heat at a rate of 300 kW to warm a house maintained at 24oC. The exterior air, which is at 7oC, serves as the source. Calculate the rate of entropy change of the two reservoirs and determine if this heat pump satisfies the second law according to the increase of entropy principle.

Q: Refrigerant 134a enters a compressor as saturated vapor at -10 degrees C and leaves it at 280kPa and…

A:

Q: Find the second law efficiency of the steam turbine operating steadily at initial pressureof 3 MPa…

A:

Q: Consider the system shown in the figure. When the pins fall away, the gas expands against a constant…

A: Number of moles of the gas, n=10  Initial pressure Pi= 5atm External Pressure Pext = 1 atm T = 300 K…

Q: An adiabatic pump is used to compress saturated liquid water at 10 kPa to a pressure to 15 MPa in a…

A: To Find : The work input per unit mass Given : The inlet pressure is The exit pressure is Assumption…

Q: A steady-flow, well-insulated turbine accepts steam at 4 MPa and 500°C with negligible kinetic and…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: One kilogram of steam is contained in a piston/cylinder device at 800kPa and 200°C. 1. If it…

A:

Q: An inventor claims that he can generate power from the hot spring of Ain Akisfah in Rustaq which its…

A:

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

A:

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: 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: A large fridge freezer is to extract 80 kJ of energy every second from inside of the fridge,…

A: Dear student, we are suppose to solve only one question. Please post other question as a separate…

Q: Writing the first- and second-law relations and simplifying, obtain the reversible work relation for…

A: For this particular case, we will assume that K.E & P.E to be negligible. We will assume that…

Q: A clased system has water at 4 MPa and 400 °C, wnich undergoes an is0thermal reversible compression…

A:

Q: A heat source at 600 K loses 1000 kJ of heat to a sink at 300 K. The Entropy generated in this…

A: As per question we given determine the Entropy generated in this process would be equal

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.