Nibe F2050 - Page 6

Outdoor air
The outdoor air is sucked into the heat pump.
A
The fan then routes the air to the heat pump’s evaporat-
or. Here, the air releases the heating energy to the refri-
gerant and the air's temperature drops. The cold air is
then blown out of the heat pump.
B
Refrigerant circuit
A gas circulates in a closed system in the heat pump, a
refrigerant, which also passes the evaporator. The refri-
gerant has a very low boiling point. In the evaporator the
refrigerant receives the heat energy from the outdoor
air and starts to boil.
C
The gas that is produced during boiling is routed into an
electrically powered compressor. When the gas is com-
pressed, the pressure increases and the gas's temperat-
ure increases considerably, from 0 °C to approx 80 °C.
D
From the compressor, gas is forced into a heat ex-
changer, condenser, where it releases heat energy to
the indoor module, whereupon the gas is cooled and
condenses to a liquid form again.
E
As the pressure is still high, the refrigerant can pass an
expansion valve, where the pressure drops so that the
refrigerant returns to its original temperature. The refri-
gerant has now completed a full cycle. It is routed to the
evaporator again and the process is repeated.
F
Heat medium circuit
The heat energy that the refrigerant produces in the
condenser is retrieved by the indoor module's water, the
heating medium, which is heated to 55 °C (supply tem-
perature).
G
The heating medium circulates in a closed system and
transports the heated water's heat energy to the house
radiators/heating coils.
H
The indoor module’s integrated charge coil is placed in
the boiler section. The water in the coil heats up the
surrounding domestic hot water.
I
NIBE F2050Chapter 2 | Installation function6