Refrigeration and Air Conditioning (Diploma)

Refrigeration cycles, refrigerants, psychrometry and air conditioning systems.

6 MonthsDuration 6Chapters29Topics

Enquire now

Syllabus · पाठ्यक्रम

Download PDF

01Fundamentals of Refrigeration 5 topics

Refrigeration and its applications
Unit of refrigeration (TR)
COP of refrigerator and heat pump
Reversed Carnot cycle
Air refrigeration (Bell-Coleman) cycle

02Vapour Compression Refrigeration 5 topics

Simple VCR cycle components
Cycle on T-s and p-h charts
Refrigerating effect, work and COP
Effect of sub-cooling and superheating
Actual vs theoretical cycle

03Vapour Absorption and Other Systems 4 topics

Simple ammonia-water absorption system
Lithium bromide-water system
Electrolux refrigerator
Comparison of VCR and VAR

04Refrigerants and Components 5 topics

Classification and properties of refrigerants
Eco-friendly refrigerants, ODP and GWP
Compressors, condensers and evaporators
Expansion devices: capillary tube, TXV
Domestic refrigerator and water cooler

05Psychrometry 5 topics

Psychrometric terms: DBT, WBT, DPT, RH, specific humidity
Psychrometric chart
Sensible heating and cooling
Cooling with dehumidification, heating with humidification
Adiabatic mixing

06Air Conditioning Systems 5 topics

Human comfort conditions
Summer, winter and year-round air conditioning
Window, split and package units
Central air conditioning, ducts and AHU
Cooling load estimation (introduction)

About

You will be able to

Explain the unit of refrigeration, COP and the reversed Carnot and air refrigeration cycles
Analyse the vapour compression cycle on p-h and T-s charts and calculate COP and power
Explain the vapour absorption system and compare it with vapour compression
Select refrigerants and explain compressors, condensers, expansion devices and evaporators
Use the psychrometric chart for common air conditioning processes
Explain window, split, package and central air conditioning systems and basic cooling load

Who it is for

Diploma Mechanical Engineering students of Semester 5 (BTEUP)
Students aiming for jobs in HVAC and refrigeration servicing
Students preparing for JE-level technical exams

What you need

Thermal Engineering and basic thermodynamics of earlier semesters

Questions

Will I learn to use the p-h and psychrometric charts?

Yes. Both charts are used in class to solve cycle and air conditioning problems.

Is this useful for AC servicing jobs?

Yes. Components, refrigerants and AC systems are explained with practical examples.

Is this course based on the BTEUP syllabus?

Yes. The units follow the BTEUP (Board of Technical Education, Uttar Pradesh) diploma syllabus. If your polytechnic follows a different board or a revised scheme, the centre teaches your own syllabus.