Question

A heat engine operates between a reservoir at 28°C and one at 311°C. What is the...

A heat engine operates between a reservoir at 28°C and one at 311°C. What is the maximum efficiency possible for this engine?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution :

Maximum efficiency of a heat engine operating between 2 temperature is given by

=  = Temperature of reservoir at lower temperature in kelvin = 273+28 = 301 K

=  = Temperature of reservoir at higher temperature in kelvin = 273+311 = 584 K

hence

.............Answer

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
What is the maximum possible efficiency of a heat engine operating between a reservoir at 28.0°C...
What is the maximum possible efficiency of a heat engine operating between a reservoir at 28.0°C and one at 350°C? (Enter a number as a fraction or decimal.) Answer should be eC= ?
A Carnot engine of efficiency 43% operates with a cold reservoir at 28°C and exhausts 1210...
A Carnot engine of efficiency 43% operates with a cold reservoir at 28°C and exhausts 1210 J of heat each cycle. What is the entropy change for the hot reservoir?
What is the maximum efficiency of a heat engine that operates between 440°C and 120°C? ____________________%...
What is the maximum efficiency of a heat engine that operates between 440°C and 120°C? ____________________% If this engine generates 2000 J of mechanical energy, how many calories does it absorb from the hot reservoir, and how many calories does it transfer into the cold reservoir? ___________________cal (hot reservoir) ________________________cal (cold reservoir)
The exhaust temperature of a heat engine is 290 ∘C∘C . What must be the high...
The exhaust temperature of a heat engine is 290 ∘C∘C . What must be the high temperature if the Carnot efficiency is to be 23 %% ? Express your answer using two significant figures. A heat engine uses a heat source at 500 ∘C∘C and has an ideal (Carnot) efficiency of 28 %% . To increase the ideal efficiency to 42 %% , what must be the temperature of the heat source? An ideal Carnot engine is operated between a...
A heat engine that operates at steady state between two reservoirs at TH = 750◦C and...
A heat engine that operates at steady state between two reservoirs at TH = 750◦C and TL = 15◦C, has a heat intake of 0.1 MW and rejects 50 kW of heat to the low- temperature environment. Determine the actual power produced, the thermal efficiency, the entropy generation rate. In addition, calculate the maximum possible output power and efficiency. Assume the reservoirs are isolated systems.
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...
An engine has a hot reservoir temperature of 959 K and a cold reservoir temperature of...
An engine has a hot reservoir temperature of 959 K and a cold reservoir temperature of 600 K. The engine operates at four-fifths maximum efficiency. What is the efficiency of the engine?
1- A heat engine operates between two reservoirs at temperatures of 70◦C and 170◦C. What is...
1- A heat engine operates between two reservoirs at temperatures of 70◦C and 170◦C. What is the maximum efficiency possible for this engine? 2)The molecular mass of helium is 4 g/mol, the value of Boltzmann’s constant is 1.38066 × 10−23 J/K, the universal gas constant is 8.31451 J/K · mol, and Avogadro’s number is 6.02214 × 1023 1/mol. How many atoms of helium gas are required to fill a balloon to diameter 35 cm at 17◦C and 1.787 atm? 1...
Consider a heat engine which does 500 MJ of work over a 3 hour period and...
Consider a heat engine which does 500 MJ of work over a 3 hour period and operates between a hot reservoir of Th = 1250°C and a cold reservoir of Tc = 30.0°C. The engine is ideal and therefore running at its maximum efficiency. Show that the efficiency is 80.0%? How much heat: Comes from the hot reservoir? Is added to the cold reservoir? What is the rate of entropy change of the hot reservoir? Comment, with reasons, on the...
A heat engine operates in a Carnot cycle between 74.0°C and 342°C. It absorbs 21,100 J...
A heat engine operates in a Carnot cycle between 74.0°C and 342°C. It absorbs 21,100 J of energy every second from the hot reservoir. What is the mechanical power output (in kW) of this engine? Round your answer to 2 decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT