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 device 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
pressure and because of lower heat-source tem-
peratures through absorption of energy from the
environment. 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, a heat-pump manager is included
which ensures the independent operation of all
safety devices. The water-circulation system of the
Series CMF consists of a charging pump, plate
heat-exchangers, dirt traps, a manometer, fill- and
drain valves, an automatic air-bleeder and flow
monitor.
The CMT series has, in addition, a 3-way switching
valve and a buffer storage.
Wall- and floor consoles, condensate pans, con-
densate-pan heating, a 3-way switching valve, a
bypass valve and other sensors are available as
accessories.
2
1
4
3
AB
WP AM
WP IM
IB
Fig. 26: Functional diagram heating inverter heat pump
AB:
Outdoor area
IB:
Indoor area
WP AM:
Heating pump outdoor unit
WP IM:
Heating pump indoor unit
1:
Condensing
2:
Evaporation
3:
Decompression
4:
Liquefying
REMKO CMF/CMT
28