Coefficient of performance triangle process thermodynamics

In summary, the COP triangle is a graphical representation of energy transfer processes in refrigeration or heat pump systems and is based on the first and second laws of thermodynamics. It has three sides representing heat absorbed, work input, and heat rejected. The COP can be calculated using the equation COP = (heat absorbed)/(work input) and can be affected by factors such as refrigerant type, system design and efficiency, temperature difference, and work input.
  • #1
viniterranova
8
0

Homework Statement



An ideal gas adiabatic coefficient γ is submitted to the ABCA cycle of fig, where AB is a line segment..
a) Calculate the income.
b) Show that it is smaller than the yield of a Carnot cycle operating between the same temperature extremes.

this is my attempt.

Homework Equations



P=nRT/V

The Attempt at a Solution



 

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  • #2
Your result for the work done in the cycle looks correct.

In the next line you have calculated some heat Q. Please explain what heat this represents and how you got this result.
 

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Related to Coefficient of performance triangle process thermodynamics

1. What is the coefficient of performance (COP) triangle in thermodynamics?

The COP triangle is a graphical representation of the energy transfer processes in a refrigeration or heat pump system. It is a useful tool for understanding and analyzing the efficiency of these systems.

2. How is the COP triangle related to the first and second laws of thermodynamics?

The COP triangle is based on the principles of the first and second laws of thermodynamics. The first law states that energy cannot be created or destroyed, but can only be transferred or converted. The second law states that heat naturally flows from a higher temperature to a lower temperature. The COP triangle shows how these laws apply to heat transfer in a refrigeration or heat pump system.

3. What are the three sides of the COP triangle and what do they represent?

The three sides of the COP triangle represent different types of energy transfer in a refrigeration or heat pump system. The top side represents the amount of heat absorbed by the system, the bottom left side represents the amount of work input, and the bottom right side represents the amount of heat rejected.

4. How can the COP triangle be used to calculate the coefficient of performance?

The COP triangle can be used to calculate the COP by using the equation COP = (heat absorbed)/(work input). This can be done by measuring the lengths of the sides of the triangle and plugging them into the equation.

5. What factors can affect the coefficient of performance in a refrigeration or heat pump system?

The coefficient of performance can be affected by various factors such as the type of refrigerant used, the design and efficiency of the system, the temperature difference between the hot and cold reservoirs, and the amount of work input. Any changes to these factors can impact the efficiency and overall performance of the system.

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