ME-334 REFRIGERATION & AIR-CONDITIONING
CREDIT HOURS
Theory = 3
Practical = 0
COURSE LEARNING OUTCOMES (CLOs)
| S. No. | CLOs | PLO | Taxonomy |
| 1 | Solve refrigeration cycles for related parameters and system performance | PLO-2 Problem Analysis |
Cognitive Level 3* |
| 2 | Perform calculations for psychrometry, cooling load, and air-conditioning and distribution systems. | PLO-2 Problem Analysis |
Cognitive Level 3* |
| 3 | Discuss the long-term environmental and safety impacts of various refrigerants, including their global warming potential, ozone depletion potential, and associated HSE risks. | PLO-6 The Engineer and the World |
Cognitive Level 2 |
COURSE CONTENT
- Refrigeration cycles: Review of thermodynamics of properties and processes; Reversed Carnot cycle; Ideal, standard, and actual vapour-compression cycles; Multievaporator and multi-pressure systems; simple vapour absorption cycle; vapor absorption cycle with intercooling; Gas refrigeration cycle.
- Psychrometry: Use of psychrometric chart; relative humidity and humidity ratio; dry bulb, wet bulb, dew point, and adiabatic saturation temperatures; Psychrometric processes
- Cooling/Heating Load Calculations: Indoor and outdoor design conditions for air conditioning; Heating and cooling load calculations; Thermal comfort and Indoor Air Quality (IAQ) requirements
- Thermal Distribution Systems: Single-zone and multiple zones air distribution systems; Constant air volume, variable air volume, and variable refrigerant flow systems; design and sizing of ducts; strategies for reducing noise and vibration; Building Information Modelling
- Refrigeration and Air Conditioning Systems’ Components: Compressors; cooling and heating coils; expansion devices; humidifiers; dehumidifiers and desiccant wheels; fans and blowers; pumps; grills, registers, and dampers with relevant actuators; cooling towers; automatic temperature and humidity control systems
- Refrigerants: Desirable properties of a refrigerant; classification of refrigerants and their comparison; environmental effects of refrigerants for sustainable refrigeration; designation systems; secondary refrigerants; defrosting air circulation systems.
- Application of Refrigeration: Domestic refrigerators; packaged and split AC units; cold chain and cold storage; heat pump; ice making plants
RECOMMENDED BOOKS
Text Book(s)
- Faye McQuiston, Jerald Parker, Jeffrey Spitler, Hessam Taherian, ‘Heating, Ventilating, and Air Conditioning: Analysis and Design’, 7th ed., Wiley, 2023.
- Carter Stanfield, David Skaves, ‘Fundamentals of HVACR’, 3rd ed., Pearson, 2016.
Reference Book(s)
- 2017 ASHRAE Handbook: Fundamentals. (2017). United States: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
- 2020 ASHRAE Handbook: Heating Ventilation and Air-conditioning Systems and Equipment (2020). United States: American Society of Heating, Refrigerating and Air-Conditioning Engineers.
- Howell, R. H., Coad, W. J., Sauer, H. J. (2013). Principles of Heating Ventilating and Air Conditioning: A Textbook with Design Data Based on the 2013 ASHRAE Handbook Fundamentals. United States: ASHRAE.
*For details of Taxonomy Levels CLICK HERE
