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PURPOSE OF HEAT PUMP
BASELINE UNIT
PURPOSE OF THE HEAT
PUMP
2.1 Application
The brine-to-water heat pump is designed for use
in existing or newly built heating systems. Brine is
used as the heat carrier in the heat source system.
Ground coils, ground collectors or similar systems
can be used as the heat source.
2.2 Principle of Operation
The heat generated by the sun, wind and rain is
stored in the ground. This heat stored in the ground
is collected at low temperature by the brine circulating
in the ground collector, ground coil or similar device.
A circulating pump then conveys the warmed brine
to the evaporator of the heat pump. There, the heat
is given off to the refrigerant in the refrigeration cycle.
When so doing, the brine cools so that it can again
take up heat energy in the brine circuit.
The refrigerant, however, is drawn in by the electrically
driven compressor, is compressed and "pumped"
to a higher temperature level. The electrical power
needed to run the compressor is not lost in this
process, but most of the generated heat is trans-
ferred to the refrigerant as well.
Subsequently, the refrigerant is passed through the
condenser where it transfers its heat energy to the
heating water. Based on the thermostat setting, the
heating water is thus heated to up to 55 °C.
BASELINE UNIT
The baseline unit consists of a heat pump of
compact design, ready for connection. In addition to
the control panel with integrated controller, the unit
also contains essential components of the heating
and brine circuits:
- expansion vessels
- circulating pumps
- pressure relief valves
- pressure gauges
- overflow valve (heating circuit)
The refrigeration cycle contains the refrigerant
R407C. Refrigerant R407C is CFC-free, non-ozone
depleting and non-combustible.
All components required for the operation of the heat
pump are provided on the control panel. The power
feed for load and control current must be field-
installed by the customer.
The collector loops including brine manifold must
be provided by the customer.
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3456
1) Control panel 4) Compressor
2) Circulating pumps 5) Evaporator
3) Condenser 6) Expansion vessel