Question in thermodynamics

In summary, the conversation discusses the concept of thermal efficiency and the importance of the Carnot efficiency. The formula for efficiency is mentioned and calculations are shown. The question of whether a process can have a greater efficiency than the Carnot value is also raised. The importance of the Carnot efficiency is mentioned and it is stated that a process cannot have a higher efficiency than the Carnot value.
  • #1
manal950
177
0
Hi

Can please give me the idea for solving these questions

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  • #3
I have efficiency = 1 - Tlow /T high





so 1 - 200/1200


efficiency = 5/6

Carnot efficiency = w/Qh

20/40 = 0.5

then what the next ?
 
  • #4
Why is the Carnot efficiency important? Can a given process have a greater efficiency than the Carnot value?
 
  • #5
hi

I don't no the important but I can not the efficiency greater than the Carnot value
 
  • #6
So, based on the Carnot efficiency of the process, and the efficiency determined by the heat input and work output, is the process feasible?

BTW, if you read the wiki article, it tells you why the Carnot efficiency is important.
 

What is thermodynamics?

Thermodynamics is a branch of physics that deals with the study of heat, work, and energy and their relationship to temperature, pressure, and volume in physical systems.

What are the laws of thermodynamics?

The laws of thermodynamics are fundamental principles that govern energy and its transformation in physical systems. The first law states that energy cannot be created or destroyed, only transferred or converted. The second law states that the total entropy of a closed system will always increase over time. The third law states that the entropy of a perfect crystal at absolute zero temperature is zero.

What is the difference between heat and temperature in thermodynamics?

Heat is the transfer of energy from one system to another due to a temperature difference. Temperature, on the other hand, is a measure of the average kinetic energy of the particles in a system. In thermodynamics, heat and temperature are directly related, but they are not the same thing.

What is an isothermal process in thermodynamics?

An isothermal process is a thermodynamic process that occurs at a constant temperature. This means that the system's internal energy remains constant, and any energy added or removed from the system is in the form of heat. In an isothermal process, the system's change in internal energy is equal to the work done on or by the system.

What is an adiabatic process in thermodynamics?

An adiabatic process is a thermodynamic process that occurs without the transfer of heat between the system and its surroundings. This means that the system is thermally insulated, and any energy added or removed from the system is in the form of work. In an adiabatic process, the change in internal energy is equal to the work done on or by the system.

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