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Click Here To Edit Dec:r 1793 Flash P
flash. To be
if it be deemed advisable
to raise
the water be by successive
flashes before
it is let out then
the strength must
be accordingsufficient for to a
greater height of
water
Quere which is best?
to work with single
flashes, or successive
flashes?
By a single flash y
ou get say 16
foot rise of water
By 2 flashes you
get 24 feet of water.
Quere which has
most power? one
cylinder of 24 foot
altitude: or 2 cylinders
of the same
diameter, each of
16 foot altitude.
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As the more water
the greater more of
the caloric is wasted
in forming steam
with it, the power
of the Machine
depends absolutely
upon the driness of
the match: therefore
1. There It will be
worth while to make & keep
it dry in the Match-
Chamber or the
Exsiccation place
2. No moist fuel
nothing of oil or turpentine
should be
employ'd.
Air changing Machine
The Winnowing machine
may be made
to move by wind while
there is any - the
machinery requisite
will be very little
The wind alone without
the Windmill
would not do, since
it would neither move
always in the proper
direction, nor fast
enough.
Could any thinguse
be made of the force
acquired by the burnt air
from its expulsion ".
Hardly - since it
would not act. but
in proportion as it was
in a state of compression,
nor would it be
kept in a state of compression,
but at the
expence of the ventilation power.
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Tube for the standard
a Steam Engine of the greatest
Diameter say 8 foot.
Find by what quantity
and expence of
Coal a certain quantity
of water can
be raised to a gi
certain height in a
certain time. Compare
this effect
with that of a Flash
Pump: worked suppose
by shavings
is rather by straw
for facility of calculation,
by straw.
The Steam EngineFlash Pump
will give per minute
Strokes only to x
Steam Engine n x
n x =24 or 26
Number of strokes given
in a minute by the
Steam Engine 9
- by Flash Pump 5
Power resulting from the Height to which the water
is raised by a stroke
of the Steam Engine - 4
- by Flash Pump 3
Expence of a stroke
by Steam Engine - x
-by Flash Pump - y
Advantage will be
of Steam Eng. 5h/x
of Flash P,a 3H/y
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Price of Straw fewel
compared to Coal fuel
Weight of a Truss
of Straw - lb 36
No of Trusses in
a load 36
—
Weight of a load }
of straw} 1296
Weight of a Ton }
of Coal - - 2240
Price of a Ton of} £-s-d
Coal}
of a Ton of Straw}
Dry Straw has certainly
much more combustible
matter than the purest Coal
Coal containing
1. So much more Earth
2. Its combustible matter
consisting of oil which
by combustion is reduced
to water which water
consumes caloric in
being formed into vapour
Lavoisiers Annales
14 199 Water
Straw contaains 7
times as much caloric
as water does.
on heat.
Present Price of Straw
per load 1-10-0
Cheapest ordinary 1-1-0
pric
e
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Identifier: | JB/106/013/003"JB/" can not be assigned to a declared number type with value 106. |
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1793-12 |
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106 |
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013 |
flash-pump |
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003 |
flash & steam engine |
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text sheet |
2 |
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recto |
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jeremy bentham |
[[watermarks::[w with crown] [lion motif]]] |
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34601 |
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