Instruction Sheet - 3B SCIENTIFIC PHYSICS 1000820 Manual Del Usuario

3B SCIENTIFIC ® PHYSICS
230 V, 50/60 Hz 1000820
115 V, 50/60 Hz 1000819

Instruction sheet

05/19 JS/ALF/GH
The Heat Pump D is a demonstration model for
showing how refrigerators and electrical com-
pression heat pumps work. It consists of a com-
pressor with a drive motor, a condenser, an ex-
pansion valve and an evaporator and can be op-
erated as a water-air or water-water heat pump.
The components are connected in a closed sys-
tem by copper pipes and mounted on a base
board, and the clear layout makes it possible to
directly relate the sequence of changes of state
to the cyclic operation of the heat pump. Evapo-
rator and condenser are constructed as copper
tubing spirals and each of them is submerged in
water filled containers serving as heat reservoirs
for determining the heat absorbed or emitted.
Two digital thermometers allow the necessary
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. 1000820 is designed for 230 V
(±10 %), 50 Hz mains supplies, while the 1000819
model is for 115 V (±10 %), 60 Hz supplies.
1
I Compressor
II Condenser
III Expansion valve
IV Evaporator