Diploma In Refrejeration & Air Condition

1. Basis of Refrigeration and Air-conditioning

 Type of air conditioner -Pressure –Enthalpy-entropy – Ph- Diagram-Mollier DiagramVapour Compression System- Vapour Absorption system-Flooded system –DX systemAir conditioning basics 2. Compressors and Condensing

2. Condensers

 Types of Condensers – Air cooled condensers- water cooled condensers- Evaporative condenser – selection of condensers – Sub cooling and usage of Sub coolers

3.Refrigerant controls Type of Controls:-

Expansion devices, solenoid valves- Filters – Electrical Controllers – Use of the above in the refrigeration circuit

4.Compressors and Condensing Units

 Type of Compressors- Use of Compressors- Stages of Compression- spare parts of compressors- Type of condensing unit – Introduction of Power packs-applications of Power packs.

5.Evaporators and Coolers

Types of evaporators- Dx evaporators- flooded evaporators- brine coolers- dry coolersoil coolers- receivers and their functions- selection of above coolers – Defrosting methods and applications

6.Piping Installation and oil management

Study of Copper coil and their Grades – GI Piping – Liquid Line – Suction Line- Hot gas piping – chilled water piping- Condenser water piping and controls - Correction for pressure drop – Different type of oil and oil management using oil reservoir- oil separator and oil coolers- Design of oil line- Descaling method

7.Cold Room load design

Types of Refrigerator -Study of Insulation- Basic layout Design of cold room- Various type of Cold rooms- Blast freezer and Blast chiller application- Basic Design of Heat load for Chiller, Freezer, Blast freezer and Pre cooling and ripening

8. Basic Tonnage calculation, HVAC design and drafting , CALCULATION - MEP drawing readingUnderstanding tendering- BOQ,BOM & Review of Above theoretical and practical .

9.Conventional Refrigerator, frost free refrigerator, Water cooler, Deep Freezer..etc

10.Automobile AC, Function of individual components. Refrigerants used & retrofitting of old car / Mobile AC’s

11.Refrigerants Description Function Composition Application & Types Environmental impact of different refrigerants . Alternatives of cfcs. Thermodynamic properties & characteristics of ideal refrigerants. Azeotropic and Zeotropic blends. Description odp Retro fitting, filter, drier

12.Methods of Refrigeration-Ice refrigeration, Dry ice, Steam jet, Gas throttling ,Liquid Gas, Air refrigeration, Vapour absorption, Vapour compression, Thermo electric, magnetic, Thermo acoustic, Pulse tube, Vortex tube.

13.Introduction about commercial plant

14.Storage of foods - Study of Different product storage temperature- duration –Relative Humidity- freezing point –etc

SYLLABUS FOR PRACTICAL CLASSES

1.Condenser –visualization of different type like Air cooled – water cooled – combing of condenser- cleaning of condenser –Explaining the function of condenser in the system

2.Visualization of Evaporators- with different tube and fin materials – Defrost methods

 3.Various design of Piping – Method of Brazing – Welding – different type of welding

4.Visualization of Hermetic- Semi Hermetic – Reciprocating – screw – scroll and Rotary compressors- Explaining about Open type – closed type compressors- Dismantling of Any type of compressors and the re assembling of the same. Overhauling of the compressors

5. Knowledge of Refrigeration controls like Expanison valve, selection of expansion valve-selection of control valves – water valves flanges –etc – fitting of the above in the circuit

 6. Ducting- Make different kind of ducting and the duct joint-reducer- damper

7.  Routing of ducting- piping- electrical conduits etc

8.Layout of AC Plant, ice plant, cold storage …etc.

9. Test and diagnosis faults of Car A/C system. Pressure test/leak of the system. Strip the component parts. Cleaning Flushing leak testing , evacuating and charging & use of suitable chemicals (Trichloro Ethylene) for more contaminated coils

10. Observe various Thermodynamic processes take place while working, Calculation of Refrigeration capacity (TR)