DI05019061 · Semester 5 · 5G scheme
Thermal Systems and Energy Efficiency
Notes and solutions following the Gujarat Technological University (GTU) syllabus for DI05019061. Independent material — not issued by the university.
Mechanical Engineering
Materials
Complete Book
The whole syllabus, unit by unit, written for the exam.
Complete Book
160 pages
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Syllabus units
Unit 1: Basic Concepts of Energy Conservation and Thermal Systems
- 1.1 Energy conservation and its significance.
- Refrigerators and air conditioners
- Electric heaters, pressure cookers
- Lighting and fans
- Washing machines, ovens, and televisions
- 1.3 Overview of the Energy Conservation Act, 2001 and the schemes introduced by the Bureau of Energy Efficiency under this Act.
- Steam generation systems
- Heat exchangers
- HVAC (Heating, Ventilation, and Air Conditioning) systems
- Refrigeration systems
- Air compressors and pumps
- 1.5 Introduction to energy audits, including walk-through energy audits.
Unit 2: Boiler Performance and Steam Distribution Systems
- Indirect method
- Direct method
- 2.2 Energy efficiency measures in boiler systems.
- 2.3 Introduction to and understanding of steam distribution systems.
- Float and thermostatic steam traps
- Thermodynamic steam traps
- Inverted bucket steam traps
- Thermostatic steam traps with thermal elements (bellows or bimetallic strip)
- 2.5 Energy conservation in steam distribution systems.
Unit 3: Furnace Systems and Energy Efficiency
- General structure of a furnace
- Working principle of a general furnace
- Applications of furnaces in industry
- Key parameters influencing furnace efficiency
- i. Direct Method (Input-Output Method)
- ii. Indirect Method (Heat Loss Method)
- Energy conservation techniques
- Methods to improve fuel efficiency
Unit 4: Energy Efficiency in Heat Exchangers and Compressed Air Systems
- General energy saving techniques in heat exchangers
- Concept of LMTD
- Calculation of LMTD (without derivation)
- Parallel flow and cross flow heat exchangers
- Heat exchanger performance analysis based on LMTD
- Basics of air compressor and Free Air Delivery (FAD)
- Energy conservation measures in compressed air systems
- Nozzle method
- Pump-up method
Unit 5: HVAC and Refrigeration Systems energy efficiency.
- 5.1 Introduction to HVAC and Refrigeration Systems
- 5.2 Selection Criteria for Refrigeration Systems
- Concept of: Ton of Refrigeration (TR), Net Refrigerating Capacity, Coefficient of Performance (COP), Energy Efficiency Ratio (EER), kW/TR
- Numerical calculations of COP, EER, and kW/TR
- Heat load estimation using enthalpy difference and psychrometric chart (simple numericals)
- Basic concept of cooling load
- Load estimation for spaces such as classroom, laboratory, and conference hall (Conceptual understanding only; data sheets allowed in exams)
- Energy efficiency improvement measures
- Operational and design-level conservation techniques
- Determination of fan pressure, power input, and efficiency
About this course
Study materials, question papers, and solutions for Thermal Systems and Energy Efficiency (DI05019061) - Mechanical Engineering, Semester 5