Explain the working of a refrigerator, Physics

Assignment Help:

Explain the working of a refrigerator

A refrigerator is the reverse of a heat engine. Here the working substance extracts heat Q2 from the cold reservoir at temperature T2, some external work W is done on it and heat Q1 is released to the hot reservoir at temperature T1.

In a refrigerator the working substance (usually, in gaseous form) goes by the following steps: 

(a)  Sudden expansion of the gas from high to low pressure which cools it and changes it into a vapour-liquid mixture, 

(b)  Absorption by the cold fluid of heat from the region to be cooled changing it into vapour.

(c)  Heating up of the vapour because of external work done on the system, and  

(d)  Release of heat by the vapour to the surroundings, bringing it to the initial state and completing the cycle.

436_physics.png


Related Discussions:- Explain the working of a refrigerator

What are coherent sources, What are coherent sources? Why are coherent sour...

What are coherent sources? Why are coherent sources required to produce interference of light? Give an example of interference of light in everyday life. In Young's double slit exp

Lami''s theorem and sine rule, a uniform sphere of mass 2kg is kept in a fi...

a uniform sphere of mass 2kg is kept in a fixed position by two strings AB and CD. AB is horizontal and CD is inclined at 30° to the vertical. calculate the tension in each string.

Experiment of a single movable pulley, A single movable pulley Suspend ...

A single movable pulley Suspend two pulleys on a cord from a horizontal support, and load them as shown. If there is no adjustable support on the expression desk, a window stic

Explain uniform velocity, UNIFORM VELOCITY: If a body covers equal disp...

UNIFORM VELOCITY: If a body covers equal displacements in equivalent intervals of time, though the smallest intervals may be, then the velocity of the body is said to be unifor

Special features and applications of carbon dioxide laser, What are the Spe...

What are the Special features and Applications of carbon dioxide laser? Special features and Applications of carbon dioxide laser: The efficiency of this Laser is extremely

The Physical Pendulum, Derivation of Equation of the physical pendulum

Derivation of Equation of the physical pendulum

What is work, What is Work Everyone knows what work is, right? It is an...

What is Work Everyone knows what work is, right? It is anything you would rather not do, like take out the trash, or study for a test. Well, not quite. In everyday language thi

Ray diagram, how to make a ray diagram ?? and what are f, p ?? and what is ...

how to make a ray diagram ?? and what are f, p ?? and what is refraction index?????

Find the maximum possible efficiency, High temperatures and pressures are g...

High temperatures and pressures are given for the following power plants. ISU co-generation:   400 psi, 750F City of Ames with RDF:   700 psi, 850F Super-critical power pl

Calculate the total amount of energy transfer by heat, A rigid tank primari...

A rigid tank primarily contains 3 kg of air at 500 kPa, 290 K. The tank is connected by a valve to a piston-cylinder assembly oriented vertically and consisting of 0.05 m³ of air i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd