Lampoassa ELI 60-90, User Manual

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USER MANUAL
100% GEOTHERMAL HEAT
The hot refrigerant is transferred from the compressor to heat exchangers
(condenser and superheater), through which it releases its thermal
energy into the heating water storage tank (6). The heat in the storage
tank is used for heating and hot domestic water production purposes.
When heat is extracted from the refrigerant vapour, a point is reached
where the vapour begins to revert into liquid – i.e., is condensed. This
point is close to temperature required for heating (in general, approx.
35-55 ºC). Since the refrigerant gas leaves the compressor at approx.
120 ºC, it cools first and liquefies later. The energy released in the course
of such cooling is referred to as superheating energy. The superheating
energy can be efficiently utilised in final heating of domestic water, by
using a superheat exchanger (3).
After the superheater, the refrigerant is transferred to CONDENSER (4),
where it is transformed from vapour to liquid, releasing the heat to the
heating water storage tank and from there to the heating network. Emi
22P- and Emi 43P -models with separate storage tank has no separate
superheater heat exchanger. All thermal energy is conceded through
condenser heat exchanger to the separate storage tank. Having conceded
its thermal energy, the liquid refrigerant is transferred through dehydra-
tion filter to EXPANSION VALVE (5), where the pressure of the liquid
refrigerant drops and a new cycle from the evaporator can commence.
2.1.3. Hot water storage tank
It is possible to connect multiple storage tanks to ESi/EMi/ELi -models to
store the thermal energy created. These storage tanks can vary in size.
Lämpöässä Esi and Emi utilises carefully designed superheating technol-
ogy allowing advantageous generation of heating and domestic hot
water. The objective is to maximise the share of geothermal heat in over-
all heating. A two-sectioned HEATING WATER STORAGE TANK (6)
equipped with partition enhances utilisation of superheating energy. The
coefficient of performance remains at a high level, since the energy-effi-
cient superheating mixture involves heat transfer between two tank sec-
tions using two different heat exchangers (condenser and superheater).
Water from the hot water storage tank is circulated in the heat distribu-
tion piping consisting of 1-3 loops.
The top part of the storage tank, i.e. the UPPER STORAGE TANK (6a),
is heated by using superheat removal heat exchanger (superheater 3) by
the extremely high thermal energy acquired from the compressor. Hot
superheating energy is stored for final heating of domestic hot water. If
required, the high thermal energy can also be transferred to the heating
system from the top storage tank.
The LOWER STORAGE TANK (6b) stores the thermal energy required for
central heating from the condenser (4) at heating network-adjusted tem-
HEAT DISTRIBUTION
CIRCUIT
HEAT COLLECTION
COOLING
GEOTHERMAL HEAT PUMP
Bore hole
Horizontal piping
in soil
Piping in water
Compressor
unit
Two-sectioned
storage tank
Heat collection
circuit
Heating water
Domestic water
Compressor
Evaporator Superheater
Co
nd
en
ser