The process of removing heat from a substance or area to make it colder than its surroundings is known as refrigeration. The vapor-compression refrigeration cycle, which uses a circulating liquid refrigerant as the medium to absorb heat from the room and reject that heat elsewhere, is the most often used type of refrigeration cycle. The compressor, condenser, expansion valve (also known as a throttle valve), and evaporator are the four parts of all such systems. If you understand the relationships between volume, temperature, and pressure as well as how pressure affects liquids and gases, then understanding refrigeration should be simple.

Course Objectives:

Following the completion of the course participants will learn:

The four stages of the closed-loop mechanical refrigeration cycle.
The basic components of the vapor compression refrigeration system.
The pressure-enthalpy (p-h) and temperature-entropy (t-s) diagram.
How to calculate system parameters such as power input, system efficiency, and cooling capacity.
The factors affecting the refrigeration system coefficient of performance (cop).
Describe the different types of evaporators - direct expansion (DX) systems and shell & tube evaporators.
The different techniques of evaporator defrosting.
The application of different refrigeration compressors -reciprocating, centrifugal, screw and scroll compressors.
The different types of condensers - air-cooled, water-cooled and evaporative condensers.
The different types of metering devices - capillary, thermostatic expansion valves and float valves.
How to choose the right refrigerant and learn the affects of certain refrigerants on ozone depletion. and
The basic thermodynamics theory and terms.

Who Should Attend?

This course is aimed at students, engineers, designers, architects, facility managers, energy auditors, environmentalists, H &S professionals, technical and sales representatives.

Course Outlines:

In the big world of HVAC/R (heating ventilating air conditioning refrigeration) you can kind of divide refrigeration systems as either "air conditioning" or "refrigeration". Air conditioning refers to a system to cool air, and refrigeration systems cool your walk-ins, freezers, food processing etc. But both these rely on the same fundamental principle of refrigeration cycles.

This course material provides a basic introduction to the principles of refrigeration and air-conditioning.

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