Question

It runs under standard air assumptions with variable specific heat, runs in a closed system, and...

It runs under standard air assumptions with variable specific heat, runs in a closed system, and consists of the following 4 processes: 4-1: Isentropic compression of 100kPa and 22ºC up to 600kPa 1-2: Adding heat up to 1500K (at constant volume) 2-3: Isentropic expansion down to 100kPa 3-4: Heat rejection (at constant pressure)

a) Calculate the net output work (in kJ / kg)

b) Determine the thermal efficiency of the system (Expressed in%)

c) Plot the cycle on your "P-v" and "T-s" diagrams

Engineering   Mechanical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
the ideal air standard Brayton cycle consists of the following processes: 1-2 isentropic compression through a...
the ideal air standard Brayton cycle consists of the following processes: 1-2 isentropic compression through a pressur ratio rp =p2/p1 2-3 heat addition at constant pressure untill the pressure is p3 3-4 isentropic expansion to the initial pressure 4-1 heat rejection at constnt pressure A- show that the cycle efficiency for this cycle is B-Air enters compressor of a gas turbine at 100kpa and 250c.for a pressure ratio of 5 and a maximum temp of 8500c , determine the thermal...
1a. An air-standard cycle consists of the following processes: isentropic compression from 15 ?C, 1.01 bar...
1a. An air-standard cycle consists of the following processes: isentropic compression from 15 ?C, 1.01 bar through a compression ratio of 5:1; heat addition at constant volume of 2600 kJ/kg; isentropic expansion to the initial volume; heat rejection at constant volume. Sketch the cycle on p-v and T-s diagrams, and calculate its ideal efficiency, mean effective pressure and peak pressure. Answers(0.475, 18.9 bar, 73.0 bar) b. The cycle is problem (a) is modified so that the heat is added (a)...
1. An engine operating at a hot-air standard (k=1.35) Dual Combustion Cycle handles air at 100kPa,...
1. An engine operating at a hot-air standard (k=1.35) Dual Combustion Cycle handles air at 100kPa, 34.5°C, & 0.3531m^3 during the beginning of the isentropic compression process. The engine has a percent clearance of 6.25% and an expansion ratio of 1.5 during the isentropic expansion process. It receives 165 kJ of heat during the constant volume process. What is the a.) Temperatures at different points of the cycle °C? b.) Net Work kJ? And c.) Mean effective pressure in kPa?
Your new engine design consists of a piston cylinder arrangement. The engine operates with mostly air...
Your new engine design consists of a piston cylinder arrangement. The engine operates with mostly air and a small amount of fuel. The system undergoes a cycle. The initial Pressure and temperature are p1= 1bar and T1= 27°C. The system undergoes a power cycle consisting of the following process: Process 1-2                         constant volume to a pressure, P2 of 4 bars Process 2-3                         expansion of pv=constant Process 3-1                         constant-pressure compression Draw the system and pv diagrams If P2 is 4...
1) An air-standard Otto cycle has a compression ratio of 9. At the beginning of the...
1) An air-standard Otto cycle has a compression ratio of 9. At the beginning of the compression process, the temperature is 20°C, and the pressure is 100 kPa. The heat added is 500 kJ/kg. Determine the cycle efficiency, work output, and the heat rejected 2) An air-standard Otto cycle operates with a minimum temperature of 300 K and a maximum temperature of 1700 K. The compression ratio of the cycle is 7. At the beginning of the compression process, the...
10) An air-standard Otto cycle has a compression ratio of 9. At the beginning of the...
10) An air-standard Otto cycle has a compression ratio of 9. At the beginning of the compression process, the temperature is 20°C, and the pressure is 100 kPa. The heat added is 500 kJ/kg. Determine the cycle efficiency, work output, and the heat rejected. 11)An air-standard Otto cycle operates with a minimum temperature of 300 K and a maximum temperature of 1700 K. The compression ratio of the cycle is 7. At the beginning of the compression process, the pressure...
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as...
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as follows: 1-2 isentropic compression from an initial temperatureT1= 20 degree celsius with a compression ratio r = 5 2-3 constant pressure heat addition 3-1 constant volume heat rejection The gas has constant specific heats with cv = 0.7 kJ/kg·K and R= 0.3 kJ/kg·K. (a) Sketch the P-v and T-s diagrams for the cycle. (b) Determine the heat and work interactions for each pro-cess, in...
Consider an ideal Ericsson cycle with air as the working fluid executed in a steady-flow system....
Consider an ideal Ericsson cycle with air as the working fluid executed in a steady-flow system. Air is at 27°C and 110 kPa at the beginning of the isothermal compression process, during which 150 kJ/kg of heat is rejected. Heat transfer to air occurs at 950 K. The gas constant of air is R = 0.287 kJ/kg·K. a.)The maximum pressure in the cycle is? kPa b.)The net work output per unit mass of air is? kJ/kg c.)The thermal efficiency of...
Three kilograms of air within a piston-cylinder assembly executes a Carnot power cycle. The isothermal expansion...
Three kilograms of air within a piston-cylinder assembly executes a Carnot power cycle. The isothermal expansion occurs at 700K from 1.25 bar to 0.85 bar; the air can be treated as an ideal gas. If the cycle thermal efficiency is 65%, - determine the temperature of the isothermal compression - calculate the net work developed for the cycle in kJ - draw the cycle on both Pv and Ts diagrams, labelling the types of processes and including arrows to show...
An air-standard dual cycle has the following elements: compression ratio = 8.0 1600 kJ/kg heat addition...
An air-standard dual cycle has the following elements: compression ratio = 8.0 1600 kJ/kg heat addition so that 30% occurs at constant volume and 70% occurs at constant pressure The state is 300K and 1 bar at the beginning of the compression process Find:   (a) the temperatures at the end of each heat addition process (b) the cycle efficiency (c) the MEP
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT