3B Scientific Stirling Engine G - Manual (Page 5)

3B SCIENTIFIC® PHYSICS
1
Stirling Engine, Transparent U10050
Instruction Sheet
03/08 ALF
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)
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 oper-
ated 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.
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
engine, 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 indivi-
dual motion sequences at all times. The cranks-
hafts 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 pulley allows the
generated mechanical energy to be converted 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 appa-
ratus to the threaded rod on the work piston, the
stroke length can be measured.