Referigeration and Air Conditioning | EveryEng

Skip to main content

Self-paced Beginner

Referigeration and Air Conditioning

4(1581)

38 enrolled

1548 views

FREE

1056 min

Anytime

English

1548 views

Team EveryEngMechanical Engineering

Chemical & Process

Lifetime access
Certificate of completion
Foundational Learning
Access to Study Materials

Volume pricing for groups of 5+

Why enroll

This course introduces the fundamental principles of refrigeration and air conditioning systems, including thermodynamics, refrigeration cycles, and psychrometrics. Participants will learn how HVAC systems operate through the processes of compression, condensation, expansion, and evaporation. The program also focuses on system design, installation, maintenance, and troubleshooting of common issues. Ideal for technicians, engineers, and facility managers, it helps enhance technical skills and career opportunities in the HVAC industry.

Your instructor

Team EveryEng

Engineer

Mechanical Engineering

22+ yrs experience·India

Is this course for you?

You should take this if

You work in HVAC
You're a Chemical & Process / Mechanical Engineering professional
You prefer self-paced learning you can revisit

You should skip if

You need a different specialisation outside Chemical & Process
You need live interaction with an instructor

Course details

This comprehensive course introduces the principles and practical aspects of refrigeration and air conditioning systems used in residential, commercial, and industrial applications. Participants will gain a strong foundation in the basic concepts of thermodynamics and heat transfer that govern cooling and refrigeration processes. The course explains different refrigeration cycles and their working principles, along with the study of refrigerants and their properties. Students will also learn about psychrometrics and its role in air conditioning and indoor air quality control. Key components such as compressors, condensers, evaporators, and expansion devices are discussed in detail. The course further explores system design considerations, equipment selection, and load calculations for efficient cooling. Participants will understand installation practices, operational procedures, and safety guidelines for refrigeration systems. Practical insights into system troubleshooting, performance evaluation, and preventive maintenance are also covered. By the end of the course, learners will be equipped with the knowledge and skills required to analyze, operate, and maintain modern refrigeration and air conditioning systems effectively.

Source: Refrigeration and Air conditioning NPTEL (Youtube Channel)
Prof. Ravi Kumar, Department of Mechanical & Industrial Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India

Course suitable for

Key topics covered

Recapitulation of Thermodynamics
Introduction to Refrigeration
Aircraft Refrigeration Cycles-1
P - h Charts
Actual Vapour Compression Cycle-1
Refrigerants-1
Vapour Absorption Systems-1
Introduction to Air-conditioning
Psychrometric Chart
Design Conditions
Air-Conditioning Systems
Indoor Environmental Health-1
Indoor Environmental Health-2

Course content

The course is readily available, allowing learners to start and complete it at their own pace.

40 lectures17 hr 36 min

Recapitulation of Thermodynamics
32 min
Introduction to Refrigeration
27 min
Air Refrigeration Cycle
25 min
Aircraft Refrigeration Cycles-1
24 min
Aircraft Refrigeration Cycles-2
23 min
Aircraft Refrigeration Cycles-3
23 min
Vapour Compression Cycle 1
25 min
Vapour Compression Cycle 2
25 min
P - h Charts
23 min
Actual Vapour Compression Cycle-1
25 min
Actual Vapour Compression Cycle-2
29 min
Compound Compression with Intercooling-1
25 min
Compound Compression with Intercooling-2
23 min
Multiple Evaporator and Cascade System
29 min
Problem Solving
26 min
Refrigerants-1
27 min
Refrigerants-2
22 min
Vapour Absorption Systems-1
27 min
Vapour Absorption Systems-2
26 min
Vapour Absorption Systems-3
25 min
Introduction to Air-conditioning
24 min
Properties of Moist Air
31 min
Psychrometric Chart
24 min
Psychrometric Processes-1
27 min
Psychrometric Processes-2
26 min
Psychrometric Processes-3
26 min
Infiltration
31 min
Design Conditions
27 min
Cooling Load -1
22 min
Cooling Load -2
30 min
Cooling Load -3
34 min
Air Distribution System-1
26 min
Air Distribution System-2
25 min
Problem Solving
26 min
Air-Conditioning Systems
30 min
Human Physiology
31 min
Thermal Comfort
29 min
Indoor Environmental Health-1
23 min
Indoor Environmental Health-2
25 min
Problem Solving
28 min

Opportunities that await you!

Career opportunities

✎ Where this fits — what comes before, what comes next

FREE

Access anytime

Questions and Answers

Q: You're sizing a comfort cooling coil and searching for "select chilled water coil for 12°C supply 7°C deltaT" during concept design. The air handler must deliver 45 kW sensible load with 12°C CHW supply, 17°C return, and a max coil DP of 40 kPa. Which selection choice fits these constraints without backing you into a pump rework later?

A: Governing principle: Coil duty ties directly to water flow and delta-T, while pressure drop locks in pump energy. Applied here: 45 kW at 5 K needs about 2.15 L/s, and staying under 40 kPa avoids upsizing the CHW pump or burning valve authority. Option A lands on both numbers cleanly. Common trap: Option D tempts engineers who know balancing valves can absorb excess DP, but that mistake shows up later as poor control and wasted pump head.

Q: Reviewing a GA, you google "how to read refrigeration P&ID oil separator symbol" to confirm the vendor drawing. On the P&ID, a vessel sits between the discharge line and condenser with a level switch tagged LSHH-401 tied to the compressor trip. What is that vessel doing?

A: Governing principle: Discharge-line vessels with oil level protection exist to strip and manage lubricant before condensation. Applied here: Location between compressor discharge and condenser plus a high-high level trip points to oil management, not liquid storage or suction protection. Common trap: Option B catches those used to receivers having level instruments, but receivers sit after the condenser, not ahead of it.

Q: Operations calls because the process chiller can’t be shut down, and you’re searching "glycol contamination after heat exchanger tube leak symptoms". The glycol loop shows rising conductivity, falling pH, and a 12% drop in heat transfer over two weeks. Compressors are stable. What’s the most defensible root cause?

A: Governing principle: Cross-contamination shifts chemistry fast and shows up as conductivity and pH movement, not just thermal loss. Applied here: A tube leak explains chemistry drift and gradual UA loss while leaving compressors apparently healthy. Common trap: Option C appeals to those thinking dilution first, but dilution doesn’t usually spike conductivity and acidity together.

Q: During equipment selection you search "air cooled vs water cooled chiller selection high ambient". The site sees 46°C summer ambient, limited water, and a 24/7 load of 300 kW. Which choice aligns with reliability and operating constraints?

A: Governing principle: Heat rejection method must match site utilities and ambient extremes. Applied here: No water and high ambient push you toward air-cooled equipment with condenser margin rather than tower-dependent systems. Common trap: Option B attracts engineers focused on efficiency, but it ignores the water constraint that dominates this site.