Remko wkf duo, Ab c – REMKO WKF 120 Duo User Manual
Page 22
Water heat pumps require two wells in order to
obtain heat from the groundwater, one supply well
and one dry well. The development of this source
is not possible everywhere. It is expensive and
requires planning permission.
Function of the heat pump
A heat pump is a unit which makes use of a
working medium to absorb ambient heat under low
temperatures and transports this heat to a place
where it can be of use for heating purposes. Heat
pumps work according to the same principles as a
refrigerator. The difference is that heat, the by-
product of the refrigerator, is the goal of the heat
pump.
The main components of the cooling circuit consist
of an evaporator, a compressor, a condenser and
an expansion valve. In a finned evaporator, the
refrigerant evaporates both because of lower pres-
sure and because of lower heat-source tempera-
tures through absorption of energy from the envi-
ronment. In the compressor, the refrigerant is
brought to a higher pressure and temperature by
the application of electrical energy. Next, the hot
refrigerant gas reaches the condenser, a plate
heat exchanger. Here the hot gas condenses,
transferring heat to the heating system. The lique-
fied refrigerant then expands and cools in a flow
regulator, the expansion valve. Then the refrig-
erant flows into the evaporator once more and the
cycle is complete.
For control purposes, the Smart Control is included
which ensures the independent operation of all
safety devices. The water-circulation system in the
indoor unit of the WKF Duo Series consists of a cir-
culation pump, plate heat exchangers, dirt traps, a
safety valve, a manometer, fill and drain valves, an
automatic bleeding valve and flow switch.
Wall and floor consoles, condensate tray, conden-
sate-tray heating, a 3-way changeover valve, over-
flow protection valve and other probes are avail-
able as accessories.
3
1
A
B
C
2
4
D
Fig. 22: Functional diagram heating inverter heat pump
A:
Outdoor area
B:
Indoor area
C:
Heat pump outdoor unit
D:
Heat pump indoor unit
1:
Condensing
2:
Evaporation
3:
Decompression
4:
Liquefying
REMKO WKF Duo
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