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DI05019051 · Semester 5 · 5G scheme

Refrigeration and Air Conditioning

Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI05019051. Independent material — not issued by the university.

Mechanical Engineering

Materials

Syllabus

The official syllabus this material follows.

  • Syllabus

    6 pages

    FreeRead

Complete Book

The whole syllabus, unit by unit, written for the exam.

Slides

Lecture slides for revision.

Syllabus units

Unit 1: Introduction
  • 1.1 Definition of Refrigeration and air-conditioning.
  • 1.2 Refrigerating effect, unit of refrigeration, Coefficient of performance.
  • 1.3 Types of Refrigeration-Ice, dry ice, Steam jet, Throttling, Liquid nitrogen refrigeration
  • 1.4 Carnot refrigeration Cycle on PV & TS diagrams
  • 1.5 Air refrigeration cycle (Reverse Brayton or Bell - Coleman cycle) on PV& TSdiagrams.
  • 1.6 Advantages, disadvantages and applications of air refrigeration cycles.
  • 1.7 Simple numerical on Reverse Brayton cycle.
Unit 2: Vapor Refrigeration Systems
  • 2.1 Flow diagram with basic components of Vapor Compression Refrigeration system.
  • 2.2 Representation of the vapor compression cycle on P-H, T-S & P-V Diagram;
  • 2.3 Expression for Refrigerating effect and coefficient of performance.
  • 2.4 Effects of changes in operating conditions (sub-cooling, super heating of suction vapor and change in suction pressure of compressor) on performance of vapor compression refrigeration cycle.
  • 2.5 Simple Vapor absorptions cycleand its flow diagram;
  • 2.6 Simple Electrolux system for domestic units
  • 2.7 Comparison of Vapor absorption and vapor compression system.
  • 2.8 Simple numerical on vapor compression cycle.
Unit 3: Common Equipments and refrigerants of Vapor Compression Refrigeration System.
  • 3.1 Common equipments of Vapor Compression Refrigeration System with classification, advantage and disadvantages.
  • 3.2 Refrigerants and lubricants:
Unit 4: Air conditioning.
  • 4.1 Air conditioning: Introduction, classification and applications of Air conditioning.
  • 4.2 Psychometric Properties of air
  • 4.3 Psychometric chart and its use;
  • 4.4 Psychometric processes-sensible heating and cooling, Humidifying anddehumidifying, Adiabatic saturation process.
  • 4.5 Air conditioning units and plants.
  • 4.6 Simple numerical on Psychometric Properties of air
Unit 5: Installation and Maintenance of Refrigeration and Air- conditioning units.
  • 5.1 Tools used in refrigeration and Air conditioner installation and maintenance;
  • 5.2 Installation of Refrigeration and Air-conditioning units.
  • 5.3 Faults in refrigeration and air conditioning systems.
  • 5.4 Servicing procedure of Refrigeration and Air-conditioning units.

About this course

Study materials, question papers, and solutions for Refrigeration and Air Conditioning (DI05019051) - Mechanical Engineering, Semester 5