1. MEL241: Energy Conversion
P M V Subbarao
Mechanical Engineering,
IIT Delhi
MEL241: Energy Conversion
Design Tutorials

2. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Format of Tutorial
Supply of Problem sheets.
Two hours of active participation in:
Problem Formulation
Basic Calculations
System/Component Design
Drawing of the components (If required).

3. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Essentials
A dedicated note book.
Calculator.
Steam and property tables.
Pencil, scale & eraser.
More later……

4. Design of Energy Conversion Systems
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Design of Energy Conversion Systems
Available Resources (Energy, matter etc.,)
Thermodynamics
Laws and Information
Engineering Design of Thermal processes, devices and systems.
Other Engineering Sciences NO
Social Sciences and Humanities
Is Design meeting Human’s NEED?
YES
(task completed)

5. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi

6. Provision of Power is the TASK of The MECHANICAL ENGINEER
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Human being is a WEAK Animal
Yet dominates the GLOBE
Human being has ability to provide power, set LIMITS
to the rate of growth of Civilization.
Provision of Power is the TASK of
The MECHANICAL ENGINEER

7. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Steam Power Plant

8. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Turbojet Engine

9. Air-Conditioning System
P M V Subbarao
Mechanical Engineering,
IIT Delhi

10. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Biological Systems
Laws of Thermodynamics
First law of thermodynamics:
Exothermic reaction: energy is lost from system into surrounding environment
Endothermic reaction: energy from outside system is put into system (e.g. photosynthesis)
Second law of thermodynamics: Coal burned in boiler --> steam + dispersed heat
Organic matter used by consumers --> living tissue + heat

11. Mechanical Engineering,
P M V Subbarao
Mechanical Engineering,
IIT Delhi
Ecological Systems
Ecosystem :
Biological community and abiotic environment unite to form a single interactive system.
Exchange of energy and matter terrestrial and aquatic
Driving force: sun
Component
Producers: green plants:
Heterotrophs: consumers and decomposers
Abiotic component : soil,