Refrigeration and air conditioning notes pdf

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GATE Refrigeration & Air Conditioning Made Easy Notes for Mechanical Engg. – Ululu

Toggle navigation. About us Courses Contact us. Thermodynamics : Part I Review of fundamental principles? Thermodynamics : Part II Review of fundamental principles? Web Content Downloads loading Module Name Download. History Of Refrigeration.
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Mechanical Engineering mcq on # Heat Transfer, Refrigeration and Air Conditioning - PART-1


Lesson 3. Lesson 5. Effect of change of operation conditions on the working of vapour compression refrigeration plant. Lesson Importance of Multiple evaporator and compressor systems, Multi evaporator and one compressor systems. Click Here.

Upload your notes. Air Refrigeration cycle: Open and closed air refrigeration cycles, Reversed Carnot cycle, Bell Coleman or Reversed Joule air refrigeration cycle, Aircraft refrigeration system, Classification of aircraft refrigeration system. P of the cycle, Actual vapour compression refrigeration cycle, Multistage vapour compression system requirement, Removal of flash gas, Intercooling, Different configuration of multistage system, Cascade system. Three fluid system. Refrigerants: Classification of refrigerants, Nomenclature, Desirable properties of refrigerants, Common refrigerants, Secondary refrigerants and CFC free refrigerants. Ozone layer depletion and global warming considerations of refrigerants.

Refrigeration Cycle: Refrigeration is the process in which heat is removed from a body enclosed space so that its temperature is reduced and then maintained at the temperature below the surrounding temperature. The working substance which is used to produce refrigeration is known as refrigerant. Heat Pump: Heat pump is used to remove heat from a body at lower temperature and transfer this heat to a body having high temperature on the expense of external work supplied. Coefficient of Performance;. Here, the desired effect is to give heat to higher temperature body.


In other words, refrigeration means artificial human-made cooling [1] [2]. Heat is removed from a low-temperature reservoir and transferred to a high-temperature reservoir. The work of heat transfer is traditionally driven by mechanical means, but can also be driven by heat, magnetism , electricity , laser , or other means. Refrigeration has many applications, including, but not limited to: household refrigerators , industrial freezers , cryogenics , and air conditioning. Heat pumps may use the heat output of the refrigeration process, and also may be designed to be reversible, but are otherwise similar to air conditioning units.

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