A power cycle consisting of the three processes: Process 1-2: Constant volume to P2 Process 2-3: Polytropic expansion Pv=c, use k=1.28 Process 3-1: Compression at constant pressure Assuming 2.5 kg carbon dioxide as the working substance with P₁= 1.5 bar, P₂= 6 bar, T₁=350 K and neglecting kinetic and potential energy effects: a) sketch cycle in P-v diagram b) calculate thermal efficiency CO₂ molar mass = 44. CO2 specific heat cy=1.014 kJ/kg/K

A power cycle consisting of the three processes: Process 1-2: Constant volume to P2 Process 2-3: Polytropic expansion Pv=c, use k=1.28 Process 3-1: Compression at constant pressure Assuming 2.5 kg carbon dioxide as the working substance with P₁= 1.5 bar, P₂= 6 bar, T₁=350 K and neglecting kinetic and potential energy effects: a) sketch cycle in P-v diagram b) calculate thermal efficiency CO₂ molar mass = 44. CO2 specific heat cy=1.014 kJ/kg/K

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: SL-4 A reversible refrigerator is driven by a (non-reversible) heat engine with e-0.250. Both…

A: A reversible heat engine is a work producing device which is based on Carnot's cycle and its…

Q: Nitrogen flows at 1000 kg/h into a compressor at 1 bar and 300 K and leaves at 5 bar and 420 K,…

A: GivenmN=1000 kg/hP1=1barT1=300KP2=5barT2=420Kfor watermw=1400 kg/hTw1=300KTw2=320K

Q: 2) A heat pump with the amount of heat of liquid refrigerant (mix) when it will enter the expansion…

A: Answer: The coefficient of performance of the heat pump is 0.575.

Q: 4) The process of burning fuel in a turbine engine can be modeled by a heat engine that utilizes a…

Q: As shown in the figure below, a reversible power cycle receives energy QH by heat transfer from a…

A: Given data:- Reversible power cycle (Carnot engine)

Q: 3) Describe in words and with a sketch a process that is consistent with the qualitative work-energy…

Q: 1. In a turbine, steam enters with an enthalpy of 1275 Btu/lbm and leaves with an enthalpy of 1115…

Q: A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump…

A: Given : rate = 0.42 gal/min inlet pressure = 14.7 lbf/ in2 inlet temperature = 180 0F exit…

Q: DEVICE IS REFRIGERATION 12 23 At 3 4 AT 2 AT 3 : AT 4: MASS ADIABATIC COMPRESSION COOL AT P1 = P2 =…

A: Initial PressureP1=Pressure at point 4P4=1bar=100kPaInitial TemperatureT1=-5.15°C=267.85KPressure at…

Q: An ideal gas contained in a piston-and-cylinder device undergoes a thermodynamic cycle made up of…

A: Given Data: Pressure at 1, P1 = 9.35 atm The temperature at 1, T1 = 330 K Pressure at 2, P2 =12.58…

Q: Q2: For air standard diesel cycle the following data is available: compression ratio Heat added / kg…

A: Dear student as per the policy i have solved first three subparts for you , request you to post…

Q: The expansion phase of a simplified diesel cycle is simulated by an air-filled piston-cylinder…

A: Given: The ratio of the final specific volume to the initial specific volume is, rex=20=v3v1. The…

Q: Shown below is the P-V plot for three processes from state 1 to state 2. Select the area that…

A: We know that the boundary work is directly proportional to the area enclosed in the P-V plot. The…

Q: Steam flows through an adiabatic turbine, entering at 1000 psia, 1100°F, and 300 ft/sec and exiting…

A: State 1: P1= 1000 psiaT1= 1100∘FV1= 300 ft/sec State 2: P2= 10 psiaT2= 300∘FV2= 600 ft/sec Power…

Q: A closed system undergoes a thermodynamic cycle with 2 steps: process 1-2 (from state 1 to state 2),…

Q: The figure shows a system with a working impeller. The system is adiabatic and at constant pressure.…

Q: (2) (3 STEAM P₁ = 40 BAR (AV)₁ = 70m ³ min (2 P₂ = P4 20 Bar T₁ = 500°C T2 400°C T3 = 500°C P3= 20…

Q: Shown below is the P-V plot for three processes A, B, and C from state 1 to state 2. Which process…

Q: Steam enters a turbine with a pressure of 30 bar, a temperature of 440 C, and velocity of 160 m/s.…

A: Note: As per our guidelines we are supposed to answer only the first 3 sub-parts. Kindly repost…

Q: In a gasoline engine the piston compresses the air-fuel mixture starting at a pressure of p1 = 1 bar…

Q: A system consisting of 1 lb of water undergoes a power cycle composed of the following processes: 2.…

Question

A power cycle consisting of the three processes:
Process 1-2: Constant volume to P2
Process 2-3: Polytropic expansion Pv=c, use k=1.28
Process 3-1: Compression at constant pressure
Assuming 2.5 kg carbon dioxide as the working substance with P₁= 1.5 bar,
P₂= 6 bar, T₁=350 K and neglecting kinetic and potential energy effects:
a) sketch cycle in P-v diagram
b) calculate thermal efficiency
CO₂ molar mass = 44.
CO₂ specific heat cy=1.014 kJ/kg/K

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Follow-up Questions

Read through expert solutions to related follow-up questions below.

Follow-up Question

Where did you get cv for CO2 from, what what temperature?

Solution

by Bartleby Expert

SEE SOLUTION

Similar questions

Problem 1) Rankine Cycle Analysis Consider a simple Rankine cycle, steam power plant. The state points are defined in the schematic and the operating conditions are given in the Table la. The steam flow rate is 137.4 lbm/s. You may use "EES," but supply your code. a) Provide a quantitative T-s diagram including all state points, lines of constant pressure, and the "dome." b) Determine all the energy quantities and complete Table 1b. Discuss the value of the quality at state 4. c) Determine all the exergy quantities and complete Table 1c. Assume the dead state temperature is 77°F and the dead state pressure is 14.7 psia. d) Discuss your results. What additional insights does the exergy analysis provide? 3 Quoiler 4 Fuel State 1 2 3 4 State 1 2 3 4 State br (Btu/lbm) 1 ? 2 ? Boiler ? ? Table 1a: State Points and Other Items T (°F) p (psia) Variable ? 0.71 XI ? 700 turbine 1057 700 pump ? 0.71 boiler T (°F) p (psia) ? 0.71 Turbine ? 1057 ? Condenser Table 1b: Energy Results 700 700 0.71 W…
7) Consider a cycle with n moles of diatomic gas illustrated in the PV diagram below. Assume the gas is ideal and that AB is an isotherm. a) Complete the chart below in terms of n, R, Temperature and Volume. b) Determine the efficiency. c) Find the Carnot efficiency for a cycle operating between these temperatures. P Isotherm B. C V V. AEint Qin WBy АВ BC СА cycle
m= 1 kg Process path (straight line) R= 0.50 2 C, = 0.5 kJ/kg K P V= 1 m3 P= 300 kPa V= 0.5 m3 P= 600 kPa An ideal gas in a piston undergoes a process from state 1 to state 2 above. d) The work to move the piston is: a) performed ON the system (Win) b) performed BY the system (Wout) e) If no other work is done on or by the system during the process, circle the term that must be non-zero (i.e. what else occurs during the process) to satisfy the Conservation of Energy Equation for a closed system having no change in KE or PE. W - W, + Qin - Qout = AU in out
Thermodynamics II
-Gas supply line- Gas A 1.5 m3 tank initially contains a gas at 140 kPa, 340 K. The tank is connected a line carrying same gas at 1400 kPa and 340 K. What should be heat transfer during this process, in kJ, so that the final pressure and temperature are 1400 kPa and 340 K, respectively. (cp=0.72 kJ/kg.K, cv=0.48 kJ/kg.K).
2. A heat pump is like a refrigerator in that it uses work to take heat from a cold source (Tc, the inside of a house) and dumps it into a hot source (Th, usually the outdoor environment). a) Use the second law to find the magnitude of the work |w| needed to extract |qc] from the cold source and dump into the hot source. b) Assume all processes are reversible and the second law to explain why |w| > 0 if lgc] > 0 in part a).
The manufacturer of the device claims that it accepts a heat transfer at a rate of QH = 3.0 kW from a low-grade source of geothermal heat at TH = 80ºC and rejects heat at rate QC to the atmosphere at TC = 20ºC. The device operates at steady state and produced work at a rate of W= 2.5 kW. There are no other heat or work transfers from the device. a.) What is the rate at which the device rejects heat to the atmosphere, QC ? b.) Is this device possible? Justify your answer using an entropy balance.
The last 3 parts B,D,E