Refrigeration and Air Conditioning (B.Tech)

Refrigeration cycles, refrigerants, psychrometry and air-conditioning system design.

6 MonthsDuration 6Chapters28Topics

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Syllabus · पाठ्यक्रम

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01Refrigeration Basics and Air Refrigeration 4 topics

Unit of refrigeration and COP
Reversed Carnot cycle
Bell-Coleman (reversed Brayton) cycle
Aircraft refrigeration systems

02Vapour Compression Refrigeration 5 topics

Simple VCR cycle on T-s and p-h charts
Effect of subcooling and superheating
Effect of evaporator and condenser pressures
Actual cycle
Multi-stage and multi-evaporator systems

03Vapour Absorption and Other Systems 4 topics

Ammonia-water absorption system
Lithium bromide-water system
Electrolux refrigerator
Steam jet and thermoelectric refrigeration

04Refrigerants and Components 5 topics

Designation and properties of refrigerants
ODP, GWP and eco-friendly refrigerants
Compressors
Condensers and evaporators
Expansion devices

05Psychrometry 5 topics

Psychrometric properties
Psychrometric chart
Sensible heating and cooling
Humidification and dehumidification
Adiabatic mixing and evaporative cooling

06Air Conditioning Systems 5 topics

Human comfort and comfort chart
Bypass factor, SHF, RSHF and ESHF
Cooling load estimation
Summer, winter and year-round AC systems
Duct design basics

About

You will be able to

Find COP of reversed Carnot and air refrigeration cycles
Analyse simple and modified vapour compression cycles on the p-h chart
Explain vapour absorption, steam jet and other refrigeration systems
Select refrigerants considering ODP and GWP, and explain system components
Use the psychrometric chart for air-conditioning processes
Estimate cooling load and design simple air-conditioning systems

Who it is for

B.Tech Mechanical Engineering students of Semester 6 (AKTU)
Students of other universities studying the same subject who want unit-wise coaching

What you need

Engineering and Applied Thermodynamics
Use of refrigerant tables and psychrometric chart

Questions

Which syllabus does the Refrigeration and Air Conditioning course follow?

It follows the AKTU (Dr. A.P.J. Abdul Kalam Technical University, Lucknow) B.Tech syllabus for Refrigeration and Air Conditioning. If your own university's syllabus differs, the centre follows your university syllabus.

Will this help in the university examination?

Yes. Teaching is unit-wise as per the AKTU scheme, with numericals, previous-year question practice, MCQ tests and doubt sessions before the semester exam.

Are refrigerant tables and the psychrometric chart allowed in the exam?

Usually yes in AKTU; we practise every numerical with the p-h chart, refrigerant tables and psychrometric chart.