The Birth of Engineering Thermodynamics

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The Birth of Engineering Thermodynamics

• P M V Subbarao
• Professor
• Mechanical Engineering Department
• I I T Delhi

Major Milestone Inventions to Formulate Strong
Concepts..
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Impact of Fire on Extra-somatism
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The Accounting A major concern in
Extrasomatism

• If we are living in a cave and realized our
  extrasomatism, we need to start accounting with
  some degree of precise standard.
• We might be having fire, stick and stone tools in
  our cave.
• There, starts a measurement system.
• Like when you grunt and say how many beast you
  killed for dinner, 1, 2 or 3.....measurements.
• When gathering wood for a fire you would ask for
  so much wood.....measurement.
• To live in our physical world we need to
  understand it (The Knowledge).

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Innovation and Conservation
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The Major Break Through Research due to
extrasomatic Behaviour.

• Development of Equipment for Enhancing the
  Utility of Fire/fuel.
• Development of Theory Systems for Motive Power.

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The Aelopile

• In 130BC. Hero, a Greek mathematician and
  scientist is credited with inventing the first
  practical application of steam power, the
  aelopile.

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Branca's Steam Turbine

• In 1629, Giovanni Branca, of the Italian town of
  Loretto, described, in a work' published at Rome,
  a number of ingenious contrivances.

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The Savery Engine
Thomas Savery, July 2, 1698, patented the design
of the first engine which had the most important
advance in actual construction. A working model
was submitted to the Royal Society of London.
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Functional Diagram of Savery Engine
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Cyclic Events in Savery Engine
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Thomas Savery

• As an English army officer, Thomas Savery was
  once ejected from the Lord of the Admiralty's
  office as a lunatic because he proposed a ship
  that could be propelled by side-mounted wheels
  rather than by wind or oars.
• He exhibited great fondness for mechanics, and
  for mathematicians natural philosophy and gave
  much time to experimenting, to the contriving of
  various kinds of apparatus, and to invention.
• http//inventors.about.com/library/inventors/blsav
  ery1.htm

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Various Cycles of Nature

• Water Cycles
• Energy Cycles
• Life Cycles of Animals
• Life Cycles of Plants
• Seasonal Cycles
• Planetary Cycles
• Rock Cycles
• Geo-Physical Cycles
• Chemical Cycles
• Disease Cycles

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Rock Cycle
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Energy Interaction in Rock Cycle
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A cyclic Event persists for long time (for
ever)..
The Engineering Philosophy of Savery

• Cyclic devices are immortal.

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Newcomen Engine
The original Thomas Newcomen engine was invented
in 1712.
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James Watts Engine
James Watt radically improved Newcomen's engine
(1769) by condensing the steam outside the
cylinder .
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James Watt Engine

• Watt's Double-Acting Engine, 1784.
• The Watt Hammer, 1784.
• Trevithick's Locomotive, 1804
• The " Atlantlc," 1832.
• Steam Engine Reached its pinnacle in size when it
  was called to drive 5 MW electric generator.

Steam Engine As an Alternate to Horse or Cattle..