Note: Descriptions are shown in the official language in which they were submitted.
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1
Method and Device for Introducing and for Extracting Heat Energy into and
from a Body of Water
The present invention relates to a device and to a system comprising the
device
for introducing heat energy into a body of water and for extracting heat
energy
from the body of water.
Furthermore, a method for heating and cooling a structure by means of a
corresponding device is described.
Due to rising energy costs and due also to ecological aspects, it is becoming
increasingly important to utilize natural energy sources, such as wind or
solar
energy, in order to minimize the use of fossil fuels. Since energy sources of
this
type often deliver the necessary energy only for certain periods of time,
however
(solar cells deliver no power at night; wind turbines stand still in still
air), energy
generated by means of natural energy sources is temporarily stored in times of
an energy surplus in order to be able to utilize the energy at a later point
in time,
for example, at night.
So-called pumped-storage power plants, for example, have proven particularly
suitable for this purpose. In this case, water is pumped into a storage basin
at a
higher elevation, for example, with the aid of power generated by means of
wind
turbines. If energy is required, the potential energy of the water can be
utilized
during the release of the water into a storage basin at a lower elevation for
driving generators and, therefore, for generating electric current.
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It has also been already proposed to temporarily store heat energy in water
tanks in order to subsequently extract the heat energy from the water tank by
means of a heat exchanger and utilize the heat energy.
The previously known methods undoubtedly have advantages over the
utilization of exclusively fossil energy sources without a second thought.
There is
room for improvement here as well, however.
The problem addressed by the present invention is therefore that of providing
a
device and a system, as well as a method, with the aid of which a particularly
efficient utilization of naturally occurring energy is possible.
The problem is solved by a device, a system, and the method having the
features of the independent claims.
The device according to the invention is used, in principle, for introducing
heat
into a body of water and for extracting heat energy from the body of water,
wherein the body of water can be, for example, an artificial pond or lake or a
pumped-storage basin which is operatively connected to one or multiple wind
turbines.
The device generally comprises a main body including an interior hollow space
which is completely or partially closed, wherein the iollow space is
dimensioned
in such a way that the device floats when placed in the body of water.
Preferably, the device comprises attachment points, via which the device can
be
fixed in position in the body of water.
Furthermore, the device comprises a water heat exchanger which is at least
partially immersed in the body of water after the device has been placed into
the
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body of water, and therefore the heat transfer fluid flowing through the heat
exchanger is in thermally conductive contact with the body of water via one or
multiple heat exchanger walls in order to enable an exchange of heat energy
between the heat transfer fluid and the water of the body of water.
The water heat exchanger comprises an intake for the heat transfer fluid which
can be, for example, glycol or another known heat transfer fluid, and a
discharge
for the heat transfer fluid. If the device is now connected, via a pipe
system, to a
heat pump located on land before the use of the device, heat transfer fluid
can
flow from the heat pump to the device via the pipe system. In the device, the
heat transfer fluid enters the water heat exchanger through the intake, flows
through the water heat exchanger and, finally, flows back to the heat pump via
the pipe system. If the water of the body of water has a temperature which is
higher than the temperature of the heat transfer fluid, the heat transfer
fluid
extracts heat energy from the body of water while passing through the water
heat exchanger and conducts the heat energy to the heat pump which, in turn,
extracts heat energy from the heat transfer fluid (in order to heat a
building, for
example).
Depending on the temperature of the heat transfer fluid and on the water
temperature, it is possible (in the winter months, in particular) that the
water
surrounding the device changes its physical state and freezes into ice,
wherein a
particularly large amount of heat energy can be extracted from the water in
this
case. The body of water acts as an "ice accumulator" in this case.
In order to now supply the body of water with natural heat energy
simultaneously
or with delay, and, therefore, to heat the body of water again and melt any
ice
which may have formed, the device further comprises an air heat exchanger, by
means of which heat energy from the ambient air can be introduced into the
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body of water. For this purpose, the air heat exchanger comprises an air inlet
for
taking in ambient air and an air outlet for discharging the ambient air
previously
having entered the air heat exchanger through the air inlet, and therefore the
ambient air can flow through the air heat exchanger. In order to force this
flow, if
necessary, it is provided that the device comprises at least one fan, by means
of
which ambient air can be displaced through the air inlet into the air heat
exchanger and then through the air heat exchanger The fan is a ventilator or a
blower. The air heat exchanger further comprises an inlet for water
originating
from the body of water and an outlet for the water fed in via the inlet, and
therefore water from the body of water can flow through the air heat exchanger
and then exit the air heat exchanger.
While the aforementioned water heat exchanger is therefore utilized for
extracting heat energy from the body of water and conducting the heat energy
to
a heat pump placed on land, the task of the air heat exchanger is to extract
heat
energy from the ambient air surrounding the device and introduce the heat
energy into the water of the body of water. For this purpose, the air heat
exchanger comprises one or multiple partitions, by means of which the water
passing through the air heat exchanger is spatially separated from the ambient
air which is also passing through the air heat exchanger, wherein the transfer
of
the heat energy from the ambient air to the water takes place via the
partition or
the partitions.
While the aforementioned utilization is useful in times in which the structure
(school, gymnasium, apartment building, industrial building, etc.) connected
to
the device is to be heated, the device can also be utilized for cooling a
structure,
preferably in the summer. In this case, it is possible to operate the fan when
the
temperature of the ambient air is lower than the temperature of the water of
the
body of water surrounding the device. As a result, heat energy is transferred
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from the water to the ambient air and, therefore, the body of water cools
down. If
a heat transfer fluid which is delivered from the structure and has a
temperature
which is higher than the temperature of the body of water is now pumped
through the water heat exchanger, preferably during the day, heat energy from
the heat transfer fluid is given off to the body of water. The cooled heat
transfer
fluid can finally be pumped back to the structure and, therefore, can be fed
to a
cooling circuit of the structure.
It is advantageous when the device comprises a main body forming the hollow
space. The device is designed, in principle, as a pontoon and preferably
comprises a power connector for the power supply of the ventilator and
comprises connection points to the intake and to the discharge for the
connection of a pipe system, via which the water heat exchanger can be
supplied with a heat transfer fluid. Preferably, the main body is completely
or at
least mostly made of concrete in order to provide for a low-cost, stable, and
durable design. The heat exchanger sections of the air heat exchanger, which
are designed to be tubular, in particular, preferably extend within the main
body,
in particular within the aforementioned hollow space, wherein water
originating
from the body of water flows through the aforementioned heat exchanger
sections during the operation of the device. For this purpose, the device
itself
comprises a pump. Alternatively, the device can also be connected via the
aforementioned intake to a corresponding line, via which water can be fed to
the
water heat exchanger by means of an external pump.
It is advantageous when the water heat exchanger is immersed into the body of
water below the main body of the device when the device is used as intended.
The immersed sections of the water heat exchanger (which should be sections,
of course, through which the heat transfer fluid can flow) come into direct
contact with the water below the device in this case, wherein the transfer of
the
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heat energy between the water and the heat transfer fluid takes place via
corresponding walls of the immersed sections of the water heat exchanger.
Since the immersed sections are preferably located exclusively below the
device
or the main body thereof, damage caused by passing boats/ships is nearly
entirely ruled out.
Particular advantages result when the water heat exchanger comprises one or
multiple tube sections through which the heat transfer fluid can flow and
which
are immersed into the body of water at least in sections when the device is
used
as intended and, therefore, form the aforementioned sections. Preferably, the
tube sections are designed in a meander shape, a spiral shape, or a serpentine
shape in order to provide a heat exchanger surface which is as large as
possible, on the smallest possible space. The tube sections can be formed by
several tubes or, jointly, can form one tube through which the heat transfer
fluid
flows. In any case, the tube sections are connected to the intake and to the
discharge of the water heat exchanger, and therefore the heat transfer fluid
can
flow into the tube sections and exit the tube sections.
It is advantageous when the device comprises a protective wall which is
immersed into the body of water and laterally protects the heat exchanger
element(s) immersed into the body of water. The protective wall can extend,
apron-like, from the main body downward into the body of water and prevents
flotsam from impacting laterally against the sections of the water heat
exchanger
protruding into the water and damaging the water heat exchanger. The
protective wall is preferably provided as a separate component which is
connected to the main body and, for example, laterally partially or completely
surrounds the main body (as collision protection).
Particular advantages result when the device comprises sections which protrude
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from the body of water when the device is used as intended. The device is
therefore designed, in particular, in such a way that one part of the device
is
located above and one part of the device is located below the water level of
the
body of water. In particular, it is advantageous when the fan (several of
which
can also be present, in general) is disposed in the region of a section
protruding
from the body of water in order to allow for a particularly simple maintenance
of
the fan. Alternatively, the fan can also be placed within the device, of
course,
wherein the fan is more difficult to access in this case.
It is also advantageous when the fan is disposed in the region of the air
inlet or
of the air outlet. The fan is visible from above, in particular during the
operation
of the device, and, for example, is covered by a grid. Furthermore, the fan
should comprise a connector for an electrical power supply, in particular for
a
power cable, in order to enable the fan to be connected to an external power
source which is preferably disposed on land.
Particular advantages result when the device comprises sections which protrude
from the body of water when the device is used as intended and laterally
delimit
a surface section of the body of water at least in sections. As a result, a
volume
of water, which is closed toward the side to a more or less extreme extent, is
delimited. The water present in this region can be heated particularly
intensively
by sunlight and can finally give off its heat energy to the device located
therebelow and, in particular to the air heat exchanger, and therefore the
water
flowing through the air heat exchanger can be additionally heated.
In this context, it is of particular advantage when a cover section of the
device
extends between the aforementioned sections and is below the water surface of
the body of water when the device is used as intended and is at least
partially
visible from above The cover section can delimit, in particular, the interior
hollow
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space toward the top. The interior hollow space, in turn, entirely or
partially
encloses the air heat exchanger. The region of the hollow space disposed above
the cover section, which is covered by a certain volume of water, can
therefore
be heated by the water. If ambient air is now transported through the hollow
space via the air inlet and the air outlet, this ambient air is additionally
heated by
the heated cover section, and therefore a particularly large amount of heat
energy can be introduced into the water of the body of water.
It is also advantageous when the outlet of the air heat exchanger extends in
the
region of the cover section, and therefore water exiting the air heat
exchanger
via the outlet can flow across the cover section back into the body of water.
In
particular, the cover section or a section thereof enclosing the outlet
thereof
should be located above the water surface when the device is used as intended
(i.e., after having been placed into a body of water). In any case, a
placement of
the outlet in the region of the cover section, which is visible from above, in
principle, has the advantage that the exiting water can be additionally heated
by
solar energy on the surface of the device after having exited the air heat
exchanger. The introduction of natural heat energy is the maximum in this
case.
Particular advantages result when the cover portion, together with the
sections
protruding from the body of water, forms a basin which is delimited toward the
bottom and, at least in sections, also toward the side. Preferably, the basin
is
delimited toward all sides by sections protruding correspondingly from the
body
of water and is open toward the top. The water located in the basin, which can
flow into the basin via the outlet of the air heat exchanger, can be
intensively
exposed to sunlight in this case and, therefore, can be additionally heated
(the
aforementioned outlet is preferably located in the region of the cover section
or
in the region of inwardly directed side walls of the sections of the device
protruding from the body of water).
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It is advantageous when the aforementioned water heat exchanger, preferably
its tube sections through which the heat transfer fluid can flow, extends into
the
cover section and/or into the basin, and therefore heat energy can be
transferred between the heat transfer fluid and the water located in the
basin. If
heat transfer fluid is now pumped through the water heat exchanger, the
temperature of which is below 0 C, the water located in the basin cools
rapidly
and then freezes, and therefore a relatively large amount of heat energy can
be
transferred to the heat transfer fluid in a relatively short time. In this
way, greater
amounts of heat can be rapidly provided to the structure connected to the
device, wherein this is of particular advantage at certain times of the day
(for
example, in the morning, in order to rapidly heat the structure).
Additionally or alternatively, a second water heat exchanger can also be
provided, which also comprises an intake for a heat transfer fluid and a
discharge for the heat transfer fluid (wherein the intake and the discharge
are
connected or can be connected to the first water heat exchanger or to a
separate pipe system). For example, it would be conceivable that the first
water
heat exchanger or its tube sections extend exclusively into the water of the
body
of water under the main body, while the second water heat exchanger or its
tube
sections, through which a heat transfer fluid can flow, extend exclusively
into the
basin and/or the cover section of the device and/or into the sections thereof
protruding from the water.
The system according to the invention finally comprises a device floating in a
body of water, according to the preceding or the following descriptions,
wherein
the individual features can be implemented individually or in any combination
(provided the features of claim 1 have been implemented). Furthermore, the
system comprises a heat pump which is disposed outside the body of water,
i.e.,
on land, and is connected to the device via a pipe system (preferably
comprising
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a supply line and a return line), wherein the heat pump can be placed, for
example, in a structure (a building, or the like). The neat pump is used for
extracting heat energy from the heat transfer fluid flowing back from the
device
via the pipe system in order to heat the structure. In particular, the heat
pump
and the device are connected as a circuit via the pipe system, and therefore
the
heat transfer fluid can circulate between the heat pump and the device.
Particular advantages result when the system comprises multiple devices
according to the preceding or the following descriptions. The individual
devices
can be placed independently of each other in the body of water and can each be
connected to one or multiple heat pumps via a separate line network or the
same line network. Preferably, however, multiple devices are connected to each
other to form one floating unit. In particular, in this case, the particular
air heat
exchanger and/or water heat exchanger should also be coupled to each other,
and therefore ambient air and/or heat transfer fluid and/or water from the
body of
water can flow through multiple devices in a parallel or series connection.
The method, which has already been described in part, for heating a structure
by means of a device according to the preceding or the following description
therefore includes the following steps:
Initially, the device is placed in a previously selected body of water, for
example,
a (pumped-)storage lake and, there, is fixed to the bottom of the body of
water, if
necessary. Subsequently, the device is connected to a heat pump located on
land, and therefore, in the end, the above-described system is obtained.
In order to now introduce heat energy from the ambient air surrounding the
device into the water of the body of water and therefore temporarily store the
heat energy, the aforementioned fan is set into operation, and therefore
ambient
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air is displaced through the air heat exchanger. Preferably simultaneously or
with delay, a pump is activated (which does not need to be part of the device)
in
order to pump water out of the body of water and feed the water to the air
heat
exchanger.
Given that the region through which the water flows and the region of the air
heat exchanger through which the ambient air flows are separated from each
other merely by a partition, heat energy from the ambient air is transferred
to the
water (provided, of course, that the temperature of the ambient air is higher
than
the temperature of the water passing through the air heat exchanger).
Simultaneously or preferably at least partially with delay (for example, at
night),
the heat transfer fluid is finally also pumped through the water heat
exchanger
and thereby extracts heat energy from the water of the body of water, which
can
be finally given off by the heat pump to a heating circuit of the structure to
be
heated. In this case, the heat transfer fluid is pumped from the heat pump,
through the water heat exchanger, and back to the heat pump, wherein heat
energy from the water originating from the body of water is transferred to the
heat transfer fluid in the region of the device and then transferred with the
aid of
the heat pump from the heat transfer fluid to a heating circuit of the
structure in
order to heat up the structure.
Advantages result when operating the fan, displacing the water originating
from
the body of water through the air heat exchanger, and/or displacing the heat
transfer fluid through the water heat exchanger occur as a function of the
heating demand of the structure and/or of the temperature of the ambient air
and/or of the temperature of the body of water. In particular, the fan can be
controlled and/or regulated by means of a control and/or regulating unit. For
example, it would be useful to operate the fan only when the temperature of
the
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ambient air is higher than the temperature of the water surrounding the
device, if
heat energy from the ambient air is to be fed to the body of water.
Alternatively, the device can also be used for cooling a structure, i.e., for
extracting heat energy from the structure and introducing the heat energy into
the body of water. The corresponding method comprises the following steps:
Initially, in this case as well, the device (having the features described in
the
preceding or in the following) must be introduced into a body of water
(provided
this has not already happened, since the device has already been used for the
method described above). The device must also be connected to a cooling
circuit ¨ which is located on land ¨ of the structure to be cooled (if this
has not
already taken place within the scope of the method described above, wherein
the cooling circuit can be connected to the aforementioned heat pump).
In order to now bring about a cooling of the body of water, the fan is
operated,
and therefore ambient air is displaced through the air heat exchanger. In this
case, the fan should be operated only when the temperature of the ambient air
is lower than the temperature of the water of the body of water surrounding
the
device, however, since heat energy can be transferred from the water to the
ambient air only in this case. The fan should therefore be operated preferably
at
night.
At the same time, water should be pumped through the air heat exchanger in
order to provide for the desired transfer of heat energy from the water to the
ambient air. The body of water cools down in this way. If a heat transfer
fluid is
now pumped through the water heat exchanger, the temperature of which is
higher than the temperature of the water surrounding the device, the heat
transfer fluid can give off the heat energy, which was previously taken up in
the
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structure, to the body of water via the water heat exchanger and, therefore,
cools down. The cooled heat transfer fluid, after having passed through the
water heat exchanger, is finally pumped back to the building via the pipe
system
and can cool the building via its cooling circuit.
It is also advantageous in this context when operating the fan, displacing the
water originating from the body of water through the air heat exchanger,
and/or
displacing the heat transfer fluid through the water heat exchanger occur as a
function of the cooling demand of the structure and/or of the temperature of
the
ambient air and/or of the temperature of the body of water.
Furthermore, the aforementioned methods can also be combined, of course,
wherein the initially mentioned method should be carried out in times in which
the structure is to be heated (for example, in the winter months), while the
method described second should be implemented when the building is to be
cooled (preferably, therefore, in the summer months).
Further advantages of the invention are described in the following exemplary
embodiments. Schematically:
figure 1 shows a representation of a system according to the invention,
figure 2 shows a perspective view of a first embodiment of a device
according to the invention,
figure 3 shows a sectional representation of the device shown in figure 2
along the dashed line in figure 2 and with a view from the bottom
right to the upper left (based on figure 2),
figure 4 shows a perspective view of an alternative embodiment of a device
according to the invention, and
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figure 5 shows a cross-section of the device shown in figure 4 along a
plane extending vertically through the air outlets shown on the left
and the right and based on the alignment of the device.
Figure 1 shows a schematic view of a system according to the invention, which
is used for introducing heat energy into or extracting heat energy from a body
of
water 2.
The body of water 2 is, in principle, a standing, preferably artificial body
of water
2, such as a reservoir which can be connected to one or multiple wind turbine
towers via an incoming line 20 and an outgoing line 21, with the aid of which
water 25 can be pumped into the body of water 2 o; out of the body of water,
and therefore the body of water 2 can be utilized as a pumped-storage lake.
The device 1 utilized according to the invention is designed, in principle, to
float,
and therefore, as shown in figure 1, the device is located only partially
under
water 25 (the water level is indicated by reference sign 24).
Furthermore, the device 1 is connected to a pipe system 16 (which preferably
comprises at least two pipes) which, in turn, is connected to a heat pump 15
of a
structure 17, for example, an office or apartment building, located on the
land
22. The heat pump 15, in turn, can be connected to a heating circuit 18 and/or
a
cooling circuit 19, via which the structure 17 can be finally supplied with
heat
energy or can be cooled.
The device 1 itself will now be explained in greater letail with reference to
figure
2 (perspective) and figure 3 (section along the dashed line in figure 2);
In principle, the device 1 comprises a main body 31 which is made, preferably
entirely or in part, of concrete and delimits a hollow space 3 in order to
provide
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the device 1 with the necessary buoyancy in the water 25 of the body of water
2.
Extending within the hollow space 3 is an air heat exchanger 7 which
preferably
comprises one or multiple heat exchanger tubes 32, through which water 25 of
the body of water 2 can flow. For this purpose, the air heat exchanger 7
comprises an inlet 11 which is connected to a line 28 which is only
incompletely
represented and, in turn, is connected to a pump, with the aid of which water
25
can be pumped from the body of water 2 into the water heat exchanger 4. The
water 25 flows through the heat exchanger tubes 32 and finally exits the water
heat exchanger 4 via an outlet 12. The outlet 12 is preferably located in the
region of a cover section 26 of the device 1, which taces upward and
preferably
extends below the water level 24, and therefore the exiting water 25 can be
additionally heated with the aid of sunlight.
The main heat input into the body of water 2 takes place via the air heat
exchanger 7, however, the fan 10 of which draws in ambient air via an air
inlet 8
and conducts the air into the hollow space 3 during the operation of the
device
1. In the hollow space 3, the air comes into contact with the outer wall of
the
heat exchanger tubes 32 acting as a partition 13, and therefore heat energy
from the ambient air can be transferred to the water 25 flowing through the
heat
exchanger tubes 32. The body of water 2 is heated as a result (reference is
made to the description provided above with respect to the second possible use
of the device 1, in which the body of water 2 is cooled by giving off heat
energy
to the ambient air).
Finally, the cooled ambient air exits the device 1 via an air outlet 9,
wherein the
air inlet 8 and the air outlet 9 should be located in the region of a section
27 of
the device 1 protruding from the water 25.
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While the air heat exchanger 7 is utilized, in the described case, for
introducing
heat energy from the surroundings into the body of water 2, the water heat
exchanger 4, which is also represented, is utilized for extracting heat energy
from the body of water 2 in order to conduct the heat energy to the building
(in
the opposite application, which is not explicitly described here, the air heat
exchanger 7 is utilized for cooling the body of water 2 and the water heat
exchanger 4 is utilized for introducing heat energy into the body of water 2).
The water heat exchanger 4 comprises one or multiple tube sections 29 which
are immersed, entirely or partially, into the water 25 of the body of water 2.
The
water heat exchanger 4 also comprises an intake 5, via which a heat transfer
fluid (for example, glycol) can be pumped from the heat pump 15 via the pipe
system 16 into the water heat exchanger 4. The heat transfer fluid flows
through
the tube sections 29 and returns, via an outlet, into the pipe system 16 and,
finally, back to the heat pump 15. If the heat transfer fluid flowing in via
the
intake 5 has a temperature which is lower than the temperature of the water 25
surrounding the tube sections 29, heat energy from the water 25 is transferred
to
the heat transfer fluid and can finally be utilized for heating the structure
17 via
the heat pump 15. At the same time, the water 25 in the body of water 2 cools
down, wherein, depending on the starting temperature of the body of water 2
and the temperature of the heat transfer fluid, this can even result in the
water
25 surrounding the tube sections freezing.
As is also finally clear from figures 1 and 2, the device 1 can comprise a
second
water heat exchanger 4, through which a heat transfer fluid can also flow and
which extends, for example, through upwardly protruding ribs 23 of the cover
section 26 (several ribs 23 can be provided, of course).
This second water heat exchanger 4 is therefore located in a region, in which
it
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can extract heat energy from the water 25 of the body of water 2 located above
the cover section 26. In this case, the cover section 26, together with the
sections 27 of the device 1 protruding from the water, forms a type of basin
14
which at least partially delimits a volume of water.
If heat energy is extracted from this water 25 via the second water heat
exchanger 4, this volume of water can freeze rapidly, depending on the
particular conditions, and therefore, due to the phase transition, a
particularly
large amount of heat energy per volume of water 25 can be extracted.
A second possible embodiment is shown in figure 4 (perspective) and figure 5
(section through the left and the right air outlets 9 in figure 4).
In contrast to the embodiment shown in the previous figures, the main body 31
of the device 1 shown in figures 4 and 5 is designed to be round as seen in a
top
view. The tube sections 29 of the water heat exchanger 4 protruding downward
into the body of water 2, the tube sections 29 of the water heat exchanger 4
protruding into the upper basin 14, and the heat exchanger tubes 32 of the air
heat exchanger 7 are designed in the shape of a spiral in this case and wind
around an imaginary central axis which extends through the center point of the
circular air inlet 8.
Furthermore, figure 5 shows that the tube sections 29 of the water heat
exchanger 4 protruding downward into the body of water 2 can be enclosed,
toward the side, by an apron-like protective wall 30 which is not represented
in
figure 4 for the sake of clarity.
Figure 5 also shows that the outlet 12 of the air heat exchanger 7 preferably
opens into the basin 14, and therefore the water 25 flowing out via the outlet
12
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flows back into the body of water 2 via the basin 14 and, in so doing, is
further
heated with the aid of incident sunlight.
Moreover, as shown, the second water heat exchanger 4 disposed in the basin
14 can comprise a separate intake 5 and a separate discharge 6 for a heat
transfer fluid. In principle, the aforementioned water heat exchanger 4 and
the
water heat exchanger 4 protruding downward into the body of water 2 can also
be coupled, of course, and therefore the heat transer fluid can flow through
both
water heat exchangers 4 in the manner of a series or parallel circuit.
The present invention is not limited to the exemplary embodiments which have
been represented and described. Modifications within the scope of the claims
are possible, as is any combination of the described features, even if they
are
shown and described in different parts of the description or the claims or in
different exemplary embodiments.
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List of reference signs
1 device for introducing heat into a body of water and for extracting heat
from the body of water
2 body of water
3 hollow space
4 water heat exchanger
intake of the water heat exchanger
6 discharge of the water heat exchanger
7 air heat exchanger
8 air inlet of the air heat exchanger
9 air outlet of the air heat exchanger
fan
11 inlet of the air heat exchanger for the water originating from the body
of
water
12 outlet of the air heat exchanger for the water originating from the body
of
water
13 partition
14 basin
heat pump
16 pipe system
17 structure
18 heating circuit of the structure
19 cooling circuit of the structure
incoming line
21 outgoing line
22 land
CA 03007378 2018-06-04
23 rib
24 water level
water
26 cover section
27 section protruding from the body of water
28 line
29 tube section
protective wall
31 main body
32 heat exchanger tube
