Refrigeration and Air Conditioning and Air Conditioning.pdf · Air Conditioning is the most...
Transcript of Refrigeration and Air Conditioning and Air Conditioning.pdf · Air Conditioning is the most...
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Refrigeration and Air
Conditioning
ME 268 (Model Lab)
Course Teacher:
Partha Kumar Das
Lecturer
Department of Mechanical Engineering
BUET
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Refrigeration:
Refrigeration is a process of reducing and maintaining low
temperature of a space or material below the temperature of the
surroundings.
“Refrigeration is the process of removing heat from an enclosed
space, or from a substance, and rejecting it elsewhere for the
purpose of lowering the temperature of the enclosed space or
substance and then maintaining that lower temperature.”
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Applications:
1. Domestic Refrigeration
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2. Commercial Refrigeration
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Meats, poultry and fish all must be kept in climate-controlled
environments before being sold.
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3. Industrial Refrigeration
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Evaporator:
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Compressor:
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Condenser:
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Expansion Valve:
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Unit of Refrigeration:
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Vap
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Abso
rpti
on R
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Vap
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Abso
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on R
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Air Conditioning:
Air Conditioning is the most important application of
refrigeration.
“Air Conditioning is the process of air treatment which controls
the temperature, humidity, cleanliness and distribution of the air
simultaneously to meet the requirements of a conditioned space.”
An air conditioner serves the purpose of an air cooler, air heater
and an air cleaner.
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Basic Air Conditioning System (AHU):
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Split type AC: The noise of the
compressor is outside and can be located at
some distance from the AHU.
Window type AC
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Split type A/C
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Reference 1. Ameen (2006), Refrigeration & Air-conditioning, Prentice Hall.
2. Hundy, Trott & Welch (2008), Refrigeration & Air-conditioning,
Butterworth-Heinemann.
3. Stoecker & Jones (1983), Refrigeration & Air-conditioning,
McGraw-Hill, Inc.
4. teacher.buet.ac.bd/zahurul
!! THANK YOU VERY MUCH FOR YOUR PRECIOUS ATTENTION !!
Logic will get you from A to B. Imagination will take you everywhere.