REMKO EMT 100 Assembly And Operating Instructions Manual page 19

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,
Heating pump outdoor unit
Fig. 17: Functional diagram heating inverter heat pump
Outdoor area
Condensing
Evaporation
Decompression
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 EMF consists of a charging pump, plate
heat-exchangers, dirt traps, a manometer, fill- and
drain valves, an automatic air-bleeder and flow
monitor.
The EMT 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.
Indoor area
Liquefying
Heating pump indoor unit
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