Study On Refrigeration & AC | Refrigeration & AC by Sir Md Al-Amin Hossain

1. TE 311: Textile Mill Utilities
Md. Al Amin Hossain
Lecturer (ME)
Department of Textile Engineering
Green University of Bangladesh (GUB)
Topic: Refrigeration and air conditioning:
applications; refrigerants, different refrigeration
methods
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2. Reference Books
1. Ahmadul Ameen (2006), Refrigeration & Air-conditioning,
Prentice Hall.
2. Hundy, Trott & Welch, 4th Edition, Refrigeration & Air
conditioning, Butterworth-Heinemann.
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3. Learning Outcomes:
At the end of this lecture, learners will be able to
• Define refrigeration and its types
• Explain different components of a refrigeration system
• Different application of refrigeration unit
• Air-conditioning
• Different types of air conditioning system
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13. Applications of Refrigeration
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14. Applications of Refrigeration
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15. Applications of Refrigeration
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16. Applications of Refrigeration
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17. Applications of Refrigeration
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18. Applications of Refrigeration
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19. Applications of Refrigeration
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20. Applications of Refrigeration
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21. Applications of Refrigeration
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22. Applications of Refrigeration
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23. Applications of Refrigeration
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Problem 4:

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Solution of Problem 4:

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WHAT IS AIR CONDITIONING ?
It involves 4 treatments of the properties of air
according to requirements:
1. Temperature Control (cooling, heating)
2. Humidity Control (humidifying, dehumidifying)
3. Air Purification (filtration, free from infection)
4. Air Circulation (ventilation, air motion, supply of
oxygen)

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Seven Factors Influencing Thermal Comfort
1. Activity Level
2. Clothing
3. Expectation
4. Air Temperature
5. Radiant Temperature
6. Humidity
7. Air Speed

34. THANK YOU!