Refrigeration and Air conditioning

Refrigeration and Air Conditioning System (30 classes) Objective of this Course This Course of Refrigeration and Air conditioning is designed for Mechanical and Chemical Engineering undergraduate and post Graduate students who want to specialize and perform successfully well in competitive examinations like GATE, NET. The following topics are covered in, based on the syllabus followed in most of the Indian Universities. UNIT I : INTRODUCTION [5 hrs] Introduction to Refrigeration – Unit of Refrigeration and C.O.P.– Ideal cycles- Refrigerants Desirable properties – Classification – Nomenclature. UNIT II : VAPOUR COMPRESSION REFRIGERATION SYSTEM [10 hrs] Vapor compression cycle : p-h and T-s diagrams – deviations from theoretical cycle – sub cooling and super heating. Effects of condenser and evaporator pressure on COP- multipressure system – low temperature refrigeration – Cascade systems – problems. Equipments: Type of Compressors, Condensers, Expansion devices, Evaporators. UNIT III : OTHER REFRIGERATION SYSTEMS [5 hrs] Working principles of Vapour absorption systems and adsorption cooling systems – Steam jet refrigeration- Ejector refrigeration systems- Thermoelectric refrigeration- Air refrigeration – Magnetic – Vortex and Pulse tube refrigeration systems. UNIT IV: AIR CONDITIONING SYSTEMS [10 hrs] Cooling load calculation working principles of – Centralized Air conditioning systems, Split, Ductable split, Packaged Air conditioning, VAV & VRV Systems. Duct Design by equal friction method, Indoor Air quality concepts. Outcomes: At the end of the course students will have full comfort and confidence in taking any examination related to Heat transfer due to conduction.