8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained constant at 25°C during this process as a result of heat transfer to the surrounding medium at 20°C. Determine the rate of entropy change of the air. State the assumptions made in solving this problem. SHOW-FREE BODY DIAGRAM

8. Air is compressed by a 15 - kW compressor from P, to P2. The air temperature is maintained constant at 25°C during this process as a result of heat transfer to the surrounding medium at 20°C. Determine the rate of entropy change of the air. State the assumptions made in solving this problem. SHOW-FREE BODY DIAGRAM

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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B2
7. The entropy of 500g of water increases or decreases as it undergoes temperature change or phase change. a) Evaluate the change in entropy of the water as it freezes slowly and completely at 0 °C. is given that L = 3.33 x 105 J/kg. b) If the water is warmed slowly from 20 °C to 80 °C, evaluate the change in entropy. It is given that c = 4186 J/kg.K.
7. Suppose a box containing 27 cells for 4 particles moving around to occupy. If the number of cells is decreased to only 8, what is the change of entropy of the system?
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In a SIMPLE Rankine cycle, the steam throttled condition is 8 MPa and 480°C. The steam is then reheated to 2 MPa and 460 °C. If turbine exhaust is 60 °C, determine the following: a. Heat Added b. Turbine Work c. Heat Rejected d. Pump Work e. Net Work f. Efficiency use the given below provided..Not a reheat it is simple rankine
Match each of the terms given below with the particular constraints that it implies about a thermodynamic process. isothermal isobaric A. dq = 0 Β. ΔΡ = 0 C. dw = 0 D. AV = 0 isochoric ◆adiabatic E. An = 0 F. AT=0
Question 2. Complete Units and Solution THERMODYNAMICS
Example: Suppose a 0.5 kg of water at 15 °C is heated to 20 °C. What is the change in entropy of the water. Note: Specific heat of Water is 4186 J/kgK
Q2. What is the total change in entropy when 5.0 kg Of water at 15'℃ is brought into contact with a large heat reservoir at 1000C, after the water reached the temperature of the reservoir - -4186 J/kg,K 18. O
A thermodynamic process can be represented using a PV diagram where the pressure and volume at every stage is recorded. In the thermodynamic process shown below the work done by the system is РА A O the area under the PV curve and positive the area under the PV curve and negative B is the product of the change in volume during the process and the change in pressure. cannot be found from the PV graph
1 mole of monatomic ideal gas initially at a volume of 2 L and a pressure of 10 atm is processed through a cycle where it first expands isothermally and reversibly to a final pressure of 2.5 atm, is then reversibly and isochorically cooled to a final temperature of 97.32 K, and then is reversibly and adiabatically compressed back to the initial state. 1. Determine the total work for the cycle 2. Determine change in internal energy for the cycle