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3B SCIENTIFIC ® PHYSICS
Instruction Sheet
02/11 ALF
1. Safety instructions
•
Pour the fuel alcohol carefully into the alco-
holburner, making sure that none of it is spilt.
•
Never fill the alcoholburner as long the wick is
still smoldering or another open flame is in close
proximity.
•
Immediately close the fuel container after use.
•
Keep away from the open flame.
•
Caution! Only extinguish the flame by fitting the
cover provided for this purpose.
The Stirling engine becomes hot when it is operated
with an open flame.
•
Do not touch the displacement cylinder during
or immediately after operation of the Stirling
motor.
•
Allow the Stirling engine to cool before putting it
away.
Stirling Engine G U10050
1
2. Description
The Stirling engine can be used for qualitative and
quantitative investigations of the Stirling cycle.and
can be operated in three different modes: heat en-
gine, heat pump and refrigerator.
The displacement cylinder and piston are made of
heat-resistant glass; the working cylinder, flywheel
and transmission covers are made of acrylic glass.
This allows a very clear observation of the individual
motion sequences at all times. The crankshafts are
equipped with ball bearings and made of hardened
steel. The connecting rods consist of wear-resistant
plastic.
The integrated motor-generator unit with a 2-stage pul-
ley allows the generated mechanical energy to be con-
verted into electrical energy. A switchover mechanism
permits operation of an integrated lamp or external
loads, as well as a feeding of electrical energy in order to
simulate a heat pump or refrigerator.
By attaching the thin cord supplied with the appara-
tus to the threaded rod on the work piston, the
stroke length can be measured.
1
Flywheel with marking for
speed determination
2
Motor-generator unit with
2-stage pulley
3
Switch
4
Bulb
5
4-mm safety plugs
6
Alcohol burner
7
Temperature measure-
ment connector 1
8
Displacement piston
9
Capped hose connection
for pressure measure-
ments
10 Temperature measure-
ment connector 2
11 Working piston
12 Threaded rod M3 (con-
nected with the working
piston)
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