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Temporal Cyclic Devices

P M V Subbarao

Professor

Mechanical Engineering Department

Most Suitable for Intermittent

Operations.

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p

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 sidemounted

wheels rather than by wind or oars!

"e e#hibited great fondness for mechanics, and for

mathematicians natural philosophy and gave much time to

e#perimenting, to the contriving of various $inds of apparatus,

and to invention!

http%&&inventors!about!com&library&inventors&blsavery!htm

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Thermodynamic Classification of Living Species

Living Species onEarth

Autotrophs "eterotrophs

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Thermodynamic Appreciation of NaturalMachine

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Thermodynamic Cycle of A Working Muscle

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The Cycle of Events

(nhalation of fresh air!

(nta$e of diet!

)ompression of air!

*igestion of inta$e with air!

+eneration of echanical otion!

E#halation of waste!

A cyclic creature called natural air breathing achine!

Actions are discrete but final outcome is continuous!

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e!uirements of Mo"ile #o$er

%uel &esource'

Land( Water ) Air&Sinks'

#o$er #lant**Cycle Design** +ard$are Design

Mechanical#o$er

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The flow of energy from a source to a sink

through an intermediate system orders

that system.

r witz [1992]

Thermodynamics of Creation

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The flow of energy from a source to a sink

through an intermediate system ordersthat system.

r witz [1992]

+o$ A Source ,ecomes A esource

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-thLa$ of thermodynamics

. Slo$ly driven systems naturally self*organi/e into a criticalstate0 1Per Bak,233-4

. Matter cycles in regions of energy flo$5 such cycles(visi"le in natural comple6 structures( including those of life(occur as limited material resources scram"le to provide a

vehicle for entropy e6port0 1Schneider & Sagan, 78894

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. Cyclic devices will live long.

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;ames Watt radically improved Ne$comen

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James Watt Engine

. Watt

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Sadi Nicolas !onard Carnot

The problem occupying )arnot was how to

design good steam engines!

. Steam po$er already had many uses

. Draining $ater from mines(

. E6cavating ports and rivers(

. %orging iron(

. rinding grain( and

. Spinning and $eaving cloth

. B"t it was ine##icient

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