The entropy of steam increases in actual steam turbines as a result of irreversibilities. In an effort to control entropy increase, it is proposed to cool the steam in the turbine by running cooling water around the turbine casing. It is argued that this will reduce the entropy and the enthalpy of the steam at the turbine exit and thus increase the work output. How would you evaluate this proposal?

Q: 0.2kg cup of tea at Ti=368.15K is left to cool down in a room at 293.15K.Above cup of tea iscooled…

A: Thermodynamics.

Q: Heat of amount 250 J is removed from a heat reservoir at a temperature of 270 K. What is the entropy…

A: According to guidelines we need to solve only first question kindly repost other questions in the…

Q: What phase is the water in the first case? In the last case, what phase is the water in? b) Find the…

A:

Q: 0.6 kg of air at STP undergoes a process in which its volume decreases by 10%. During the process,…

A:

Q: A Styrofoam cup holding 130 g of hot water at 97°C cools to room temperature, 23.0°C. What is the…

A:

Q: An ideal gas is taken through any four stage engine cycle ABCDA. What can you say about the entropy…

A: Here given a four stage engine cycle ABCDA. We have to talk about the entropy of the cycle and cycle…

Q: 200 J of heat flows from a hot reservoir at 150 ⁰C to a cold reservoir at 39 ⁰C. Determine the…

A: The amount by which this process changes the entropy of the Universe. given, HeatQ=200 JHigh…

Q: The energy of an isolated system must remain constant, but the entropy can only decrease O True…

A: A closed thermodynamic system is a system which is cut off from the surrounding. It exchanges…

Q: it is correct to say that an irreversible process degrads the performance of thermodynamics system…

A: Yes. It is correct to say that irreversible process degrades the performance in thermodynamic…

Q: of the system?

A:

Q: The temperature at the surface of the Sun is approximately 5,600 K, and the temperature at the…

A: Solution: Given data, Sun temperature=5600 K Earth temperature=293 K Energy=5000 J

Q: On a cold winter day, Pelle spills out 1.0 dl of water with a temperature of 20 Celsius. Two minutes…

A: Given that:V=1.0 dL=0.1 L Ti=20°C=293 KTf=-20°C=253 K

Q: Consider a car’s gasoline engine. Construct a problem in which you calculate the maximum efficiency…

A:

Q: A body at 583.37 K undergoes a reversible isothermal process. The heat energy removed in the process…

A:

Q: A 12 g ice cube at -13 °C is placed in a lake whose temperature is 19 °C. Calculate the change in…

A:

Q: In an experiment, 200g of aluminum at 100°C is mixed with 50g of water at 20°C with the system…

A:

Q: the entropy change of the gas from before the valve o

A: No of moles n = 6.50 moles R = 8.314 J/mole Intial volume v1 = V Final volume v2 = 2V

Q: an athlete whose mass is 70.0kg drinks 16.0 ounces (454g) of refrigerated water. The water is at a…

A:

Q: Consider the following statements about entropy, related to the second law of thermodynamics…

A: Entropy related to the second law of thermodynamics: Entropy is a non-conserved quantity. The total…

Q: Methane is heated in a steady-flow process at approximately atmospheric pressure. 1000 kJ of heat is…

A: Since you have been posted multiple questions. SO we are solving only first question for you. If you…

Q: The surface of the Sun is approximately at = 700 K, and the temperature of the Earth’s surface is…

A:

Q: Air is compressed by a 40-kW compressor from P to P2. The air temperature is maintained constant at…

A:

Q: (a) Snow falls through the Earth's atmosphere in different forms of snowflakes. Entropy of a water…

A:

Q: An isolated room of air initially has a volume of 224 m^3 . Within this volume, there are 1.00 x…

A: From the first law of thermodynamics, dQ=dU+dWdQ is the change in energy of the systemdU is the…

Q: 65 g of aluminum at 100°C are placed in thermal contact with 65 g of copper at 0°C. The two metals…

A:

Q: A sophomore with nothing better to do adds heat to 0.500 kgkg of ice at 0 ∘C∘C until it is all…

A:

Q: A glass of 450.0 g water at 20°C is chilled using a 20.0 g icecube at 0°C. Assume that the mixing…

A:

Q: Consider a system of 2 6-sided dice where the sum of the dice is the macrostate. What happens to the…

A: Given data, Given a set of three 6 sided dices. Where, a microstate represents the event for that…

Q: A heat engine whose thermal efficiency is 35 percent uses a hot reservoir at 1100 R and a cold…

A: Given,

Q: A tank of 100-g liquid water at 100°C is put in thermal contact with another tank of 300-g water at…

A: mass of water in first tank = 100 g Initial temperature of water in first tank = 100oC mass of water…

Q: Give your own examples where the entropy of a system decreases, and where it increases. Explain your…

A: Give your own examples where the entropy of a system decreases, and where it increases. Explain your…

Q: As shown in the figure below, 5.50 moles of H, gas is contained in the left side of a container. The…

A:

Q: Valve H2 Vacuum

A: Given: Number of moles in the H2 gas, n = 6.50 moles. Find: the rate of change of entropy,

Q: Please solve this question,Only if you have knowledge in this concept. Do not post random solutions.

A: Entropy change of the source : Given:Tsource = 400+273 = 673 KQsource = 700 KJ…

Q: A freezer is used to freeze 4.6 L of water completely into ice. The water and the freezer remain at…

A: