Question

This is a problem involving an engine with a three thermodynamic process cycle. We have an...

This is a problem involving an engine with a three thermodynamic process cycle. We have an monatomic ideal gas in a cylinder that can expand and contract. The cylinder can be connected to a hot thermal reservoir at temperature, TH, and also can be connected to a cold reservoir at temperature, TC. We start out at temperture, TH, with Pressure P1 and volume V1.

a)Keeping the cylinder connected to the hot reservoir we expand isothermaly to a new volume V2. What is the new pressure, P2?

b)Now, we connect to the cold reservoir through a controllable thermal link which allows us to compress back to the opriginal volume, V1, while keeping the pressure constant at P2. Finally, keeping the volume constant at V1 we break the connection to the cold reservoir, reconnect to the hot reservoir and allow the system to re-equilbrate to its original state. How much work is done in going around the cycle? How much heat enters the system from the hot reservoir? How much heat does the system exhaust
into the cold reservoir?

c) What is the efficiency of this engine?

Science   Physics   
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
A device uses a Stirling cycle on 378 moles of a monatomic ideal gas between two...
A device uses a Stirling cycle on 378 moles of a monatomic ideal gas between two reservoirs with temperatures of 389 K and 659 K as a refrigerator or a heat pump. The volume of the system shifts between 0.94 m3 and 2.44 m3. 1) How much energy does this device remove from the cold reservoir? 2)How much energy does this device transfer into the hot reservoir? 3)How much work is done by the device on the gas? 4)What is...
2) A heat engine operates between two fixed temperature reservoirs, TH = 127 0C, TC =...
2) A heat engine operates between two fixed temperature reservoirs, TH = 127 0C, TC = 7 0C. In each cycle 5 J are extracted from the hot reservoir and 4 J are deposited into the cold reservoir. [ 0 0C = 273 K] (a) How much work is performed by the engine per cycle ? (4) (b) What is the efficiency of the engine ? (4) (c) What is the entropy change of the hot reservoir during one cycle...
Rectangular PV Cycle A piston contains 260 moles of an ideal monatomic gas that initally has...
Rectangular PV Cycle A piston contains 260 moles of an ideal monatomic gas that initally has a pressure of 2.61 × 105 Pa and a volume of 4.9 m3. The piston is connected to a hot and cold reservoir and the gas goes through the following quasi-static cycle accepting energy from the hot reservoir and exhausting energy into the cold reservoir. 1. The pressure of the gas is increased to 5.61 × 105 Pa while maintaining a constant volume. 2....
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...
An ideal Otto cycle engine, an ideal Diesel cycle engine, and a Stirling engine all have...
An ideal Otto cycle engine, an ideal Diesel cycle engine, and a Stirling engine all have a maximum volume of 1 liter. The volume at the end of combustion for the Otto and Diesel engines is 0.1 liter. The minimum volume for the Stirling engine is 0.1 liter. All three engines operate with air initially at 100 kPa, and have a minimum temperature of 300 K and a maximum temperature of 1200 K. Determine how much work is done for...
chevy malibu uses gm ltg engine that has 4 cylinders. the process within each cylinder of...
chevy malibu uses gm ltg engine that has 4 cylinders. the process within each cylinder of the engine can be modled as an air standard otto cycle. at the beginning of the compression process the cylinder volume is .559 L, the temperature and pressure are 330 k and 1.5 bar respectively the maximum temperature is the cycle when the engine operates at 3000 rpm is 2200k. the engine compression ratio is 9.5. determine air mass flow rate to the engine,...
A four-cylinder, four-stroke engine is built into an automobile. Within each cylinder of the engine, the...
A four-cylinder, four-stroke engine is built into an automobile. Within each cylinder of the engine, the processes can be modeled as an air-standard Otto cycle. At the beginning of the compression process, the cylinder volume is .559 L. The temperature and pressure are 330 K and 1.5 bar, respectively. In the cycle, the maximum temperature is 2200 K when the engine operates at 3000 RPM. (4-stroke engine, 2 rotations per cycle, MW of air = 28.97 kg/kmol) If the engine...
A heat engine, based on diatomic molecules, can be made based on just 2 processes.  Suppose the...
A heat engine, based on diatomic molecules, can be made based on just 2 processes.  Suppose the cycle begins at a pressure of 3 atm and a volume of 0.01 m3.  It moves on the PV diagram following a straight line until it doubles in volume. Then it returns to the starting point following an isothermal path.  If there is 0.5 moles of gas, fill in the state table and the process table.  Now, which of the following temperatures would work as the hot...
A heat engine using a diatomic gas follows the cycle shown in the ??pV diagram. The...
A heat engine using a diatomic gas follows the cycle shown in the ??pV diagram. The gas starts out at point 1 with a volume of ?1=233 cm3,V1=233 cm3, a pressure of ?1=147 kPa,p1=147 kPa, and a temperature of 287 K.287 K. The gas is held at a constant volume while it is heated until its temperature reaches 455 K455 K (point 2). The gas is then allowed to expand adiabatically until its pressure is again 147 kPa147 kPa (point...
An inventor proposes a four-stroke cycle running on helium. The engine has a compression ratio of...
An inventor proposes a four-stroke cycle running on helium. The engine has a compression ratio of 8 and maximum operating temperature of 1,500 K. The atmospheric conditions are temperature of 300 K and pressure of 100 kPa. The processes can be approximated as below: 1- 2 isentropic compression 2- 3 constant volume heat addition 3- 4 isentropic expansion 4- 1 constant pressure heat removal a. Plot P-v and T-s diagrams for this cycle. b. Determine state conditions at the end...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT