Instruction Sheet - 3B SCIENTIFIC PHYSICS D Instructions D'utilisation

3B SCIENTIFIC ® PHYSICS
230 V, 50/60 Hz 1022618
115 V, 50/60 Hz 1022619

Instruction sheet

03/20 JS/ALF/GH
The Heat Pump D is a demonstration model for
showing how refrigerators and electrical com-
pression heat pumps work.
The components compressor, condenser, expan-
sion valve and evaporator are mounted on a
baseplate and are connected in a closed system
by copper pipes. The clear layout makes it pos-
sible to directly relate the sequence of changes
of state to the cyclic operation of the heat pump.
Evaporator and condenser are constructed as
copper tubing spirals and each of them is sub-
merged in water filled containers serving as heat
reservoirs for determining the heat absorbed or
emitted. Two digital thermometers allow the nec-
essary temperature measurements to be made in
both water reservoirs.
Heat Pump D
1. Description
Two observation windows are provided for ob-
serving the state of aggregation of the refrigerant
after the evaporator and after the condenser. Two
large manometers indicate the pressure before
and after the safety valve. The mains connector
incorporates a digital energy meter for determin-
ing the period of operation, the mains voltage, the
current power consumption and the amount of
electrical work done. A protective overpressure
switch disconnects the compressor motor from
the circuit when overpressure reaches 15 bars.
The heat pump D is available for two different
mains voltages:
1022618
1022619
1
I Compressor
II Condenser
III Expansion valve
IV Evaporator
230V (±10 %), 50 Hz
115V (±10 %), 60 Hz .