EP2205908A2

EP2205908A2 - Module for heating or cooling one or more storage media, particularly drinking and heating water storage tanks

Info

Publication number: EP2205908A2
Application number: EP08836185A
Authority: EP
Inventors: Christian Bichler
Original assignee: General Solar Systems GmbH
Current assignee: VKR Holding AS
Priority date: 2007-09-28
Filing date: 2008-09-25
Publication date: 2010-07-14
Also published as: WO2009043786A2; WO2009043786A3

Abstract

The present invention relates to a module for heating or cooling one or more storage media, particularly a drinking water and heating installation, comprising one combined or several separated storage containers for the respective storage media. The invention is characterized in that a heat pump is provided as a heat or cold source and optionally the heat supply from a solar power plant or other conventional energy producers can be incorporated, wherein the coefficient of performance of the installation can be increased by direct condensation and/or evaporation. The module comprises two or more adjacent heat exchangers (1, 2) with respective feed and discharge lines (15, 16) which can be interconnected via an independent circuit (17) arranged in a housing (21), a first heat exchanger (1) protruding with a corresponding first connection into the first storage chamber (25), the second heat exchanger (5) protruding with the corresponding second connection into the second storage chamber (29) and optionally further heat exchangers protruding with their respective connections into further storage chambers. According to the invention, the storage chambers (25, 29) can be connected to each other or separated from one another and the heat exchangers (1, 5) are connected to a single heat pump disposed in the housing (21) out of which the heat exchangers (1, 5) and/or their feed lines protrude.

Description

Module for heating or cooling of one or more storage media, in particular for drinking water and Heizwasserspeicher

description

The present invention relates to a module for heating or cooling of one or more storage media, in particular for drinking water and Heizwasserspeicher consisting of two or more juxtaposed heat exchangers, which are interconnected via a separate circuit, wherein a first heat exchanger with a corresponding first

Connection in a first storage space and a second heat exchanger protrude with a corresponding second connection in a second storage space, wherein the storage spaces may be interconnected or positionally separated, possibly also on structural separation measures or separate storage containers.

State of the art

Capacitors, which are connected to a heat pump and project through a corresponding connection in a storage container to effect a direct heating of the storage water, are known from the prior art. In this regard, reference is made to GB 2 229 804, DE 30 22 931, AT 413 594, DE 32 04 684, DE 80 03 021 and DE 103 23 713. All documents deal with the heating of one or more tanks filled with heating or drinking water, with condensers immersed directly in the tanks for heating purposes.

In the case of GB 2 229 804, DE 30 22 931 and DE 32 04 684, two reservoirs are provided, one for drinking water and the second for heating water, in the case of GB 2 229 804 in FIGS. 4 and 5 and DE 32 04 684 in Figure 3 two series-connected heat exchanger, in the case of DE 30 22 931 in Figure 7 and in DE 32 04 684 in Figure 4, two parallel heat exchangers are provided. The DE 103 23 713 shows in FIG. 1 a hot water tank into which two capacitor loops connected in series protrude.

However, all these known devices have a number of disadvantages, with a significant disadvantage is that said devices consist of individual devices that are assembled only at the site and connected by an on-site installation with each other. This installation thus always represents an individual production, according to the conditions on site and is sometimes difficult and thus expensive. The more complex the installation on site fails, the greater the risk of installation errors.

Technical task

To eliminate these disadvantages, the present invention has the object to provide a module for a complete, prefabricated factory installation, which are provided on site only with one, two or more storage containers for the storage of tempered media, connected to the Can cover heat or cooling demand for different applications, as a heat pump or heat source should serve a heat pump, which can use all heat sources and possibly also the heat input from a solar collector system can be integrated and wherein the direct condensation or evaporation and an optimized Construction, the coefficient of performance of the system should be increased. The heat pump can be for example an air / water pump, a water / water pump, a brine / water pump or a similar heat pump. In principle, however, any other source of heat should also be usable in combination with the mentioned ones. The heat pump should also be designed as a chiller with electrically driven compressor or thermally driven machines. In all applications, all thermal transport media, as well as absorption and adsorbent should be applied. This object is achieved by a module with two or more juxtaposed heat exchangers for direct installation in a combined or two or more separate storage containers, wherein the Heat exchangers can be connected to each other via a separate circuit arranged outside the / the memory in series connection or in parallel or in a combination of both circuits.

The inventive arrangement of the heat exchanger is preferably a series circuit allows, for example, in the heating during the cold season, the heat exchangers can be switched so that the heat exchanger for drinking water heating is flowed through with hot refrigerant and gives off some of the heat to the drinking water, the Main portion of the heat content of the refrigerant, however, is almost completely discharged to the heating water in the second condenser.

The protruding from the memory parts of the heat exchanger, the heat exchanger connecting the circuit, and components of the heat pump, such as compressor, expansion valve, solenoid valves and the like are located in a housing which are attached via suitable connecting means, such as flanges to the / the memory. The components can also be designed differently depending on the type of heat source.

The advantages of the invention are over the prior art solutions in that

• that it is a compact, simple heat pump module that can easily be mounted to the tank (s) by means of flanges, for example;

• that the simultaneous heating of drinking water and heating water or cooling is better solved with the heat exchangers arranged side by side and in operative connection with each other, since a higher coefficient of performance can be achieved by direct condensation or evaporation; • the direct condensation or vaporization eliminates the need for a charge pump, which improves the coefficient of performance and reduces mixing of the temperature layers in the reservoir;

• eliminating the need for a refrigeration technician to connect the heat pump to the storage tank, thereby reducing assembly costs; • that the required amount of refrigerant is reduced due to the shorter connections to the individual condensers;

• that a simple way of temperature management in the various capacitors or storage liquids is made possible; • that in separate, side-by-side storage tanks the piping to transfer the heat, for example, from the storage tank to the potable water storage, the components such as pumps, valves, etc. are preinstalled in the module, eliminating the need for further piping at the construction site;

• that the coefficient of performance of the heat pump increases - because the smaller refrigerant circuit causes less pressure loss,

because of the direct condensation in the reservoirs, whereby the condensation temperature can be kept as low as possible,

- because the heating can be better exploited;

• The system is service-friendly, the module according to the invention can be easily disassembled and replaced by another module;

• The space requirement is significantly lower compared to a heat pump which is located next to the store;

• The already installed electrical wiring in the module and the sensors already inserted in the immersion tube allow a quicker final assembly at the place of use and a faster commissioning, possible

Assembly errors on site are almost impossible;

• the module is suspended by the position of the flanges on the storage, the distance to the ground, for example, the condensate of an air / water heat pump can be easily fed to a drain; • The base of the heat pump is saved by the suspension on the storage, whereby the structure-borne sound transmission to the screed is considerably reduced. EXEMPLARY EMBODIMENT The invention will be explained in more detail below with reference to the figures. It shows

1 shows the schematic structure of the module according to the invention with all conceivable components for the heat pump operation for heat recovery and storage.

Fig. 2 horizontally mounted module integrated in a system with two juxtaposed memories;

3 shows a buffer for drinking water and heating water with vertical module attached; 4 shows a combined solar heat pump storage with horizontally mounted module.

Fig. 5 shows the module according to the invention for attachment to the memory or with integrated plate capacitors and associated charge pumps.

The illustrated figures illustrate only some of the possible embodiments. The module according to the invention can be adapted in the simplest way to any other embodiment variant of storage containers or other insert variants not shown here. For example, it is also possible to use the module according to the invention for the recovery and storage of cooled media. The storage media can not only serve for drinking water and heating water, but also for liquids for industrial applications.

In Fig. 1 the application is shown for a heating for drinking and heating water. Here, the heat exchangers 1 and 5 are formed as finned tube condensers. Within the finned tubes 1 and 5 are electric heating rods 2 and 6, and immersion sleeves 3 and 9 for receiving one or more

Temperature sensor. The lines 7 and 8 are used in case of need as a connection of flow and return to the second memory. The second heat exchanger 4 allows a circulation, in order to deliver the heat, for example, provided by a solar system targeted to the heat exchanger 4 can. This circulation can be controlled by mixing valve 13 and pump 14 or by other, not shown here components. With 10, 11 and 12, the flange seal, the counter flange and a possibly existing eccentric are designated. About the flow lines 15, the heat exchangers 1 and 5, the heat provided by the heat pump is supplied to the heat exchangers, the condensate returns via the return lines 16. Between these two lines 15 and 16 extends a connecting line 17 with a plurality of valves, preferably solenoid valves, to allow optimized thermal management between the two memories. By means of this circuit according to the invention between the two heat exchangers, a number of the above-mentioned advantages are made possible. Denoted at 18 is a compressor, 19 denotes a pressure relief device, 20 represents the collector, 22 the expansion valve and 23 the evaporator. These heat pump components are shown here only schematically and are not shown in the following figures, but are also housed in the housing 21 , As already mentioned, other components, even with different interconnections, can be provided among each other, depending on the particular application.

In Fig. 2, two separate memory 24 for drinking water and 25 for heating water are shown in a schematic horizontal section. The module according to the invention is mounted laterally on these two memories, wherein the protruding from the housing 21 heat exchanger 1, 4 and 5 with the dip tubes 3 and 9 and optionally present electric heaters 2 and 6 are arranged horizontally to each other and are mounted here on the flange.

However, drinking water and heating water storage tanks can also be combined with each other. For this purpose, various designs are known in the market. Representing many of these variants, a combination memory is shown in schematic vertical section in FIG. 3, whose drinking water heat storage space 25 is separated from the heating water storage space 29 by a separating plate 24. In the version shown here is located in the partition plate 24 has a bore 26. The partition plate 24 reduces the mixing in the memory, while allowing a heat flow from the lower storage space in the upper storage space. This heat flow is important, for example, if the lower storage space is connected via a connected register heat exchanger, for example Solar system is heated. In place of the bore 26 and lateral slots are conceivable, they can be omitted entirely. Here, the module according to the invention with its housing 21, the capacitors 1, 4, 5 and the already mentioned other internals also flanged laterally on the storage container, in which case the capacitors are aligned perpendicular to each other. The operation is identical to that of FIG. 2.

As is apparent from Fig. 4, the module according to the invention can be grown in the simplest way to a conventional combi solar heat pump storage. The embodiment of such a memory shown here in schematic horizontal section again represents an example of a multiplicity of variants of execution known on the market. Here, the module is again aligned with horizontally aligned capacitors 1, 4 and 5 with the already mentioned other internals. From the storage outstanding corresponding sealing sleeves 30 and 31 prevent disturbing heat radiation. For reasons of simplification of the illustration, other components have been omitted here in the figure of the capacitors, which of course are present here as well as in the figures described above.

As is apparent from Fig. 5, the module according to the invention can also be designed so that it has in the housing 21 integrated plate capacitors 36 and 37 with associated charge pumps 38 and 39. Here, in contrast to the previous versions, an indirect loading of the memory. In this embodiment, in place of the capacitors 1 and 5 pipe leads 32 and 34 and pipe outlets 33 and 35 protrude out of the housing 21 and are usually connected via screw connections with the inner tubes arranged inside the store. Here the refrigerant leading components are all housed in the module.

Claims

claims

1. module for heating or cooling of one or more

Storage media, in particular for a drinking water and heating device, with a combined or several separate ones

Storage tanks for the individual storage media, which serves as a heat or cooling source, a heat pump and possibly also the heat input from a solar system or other, conventional heat generators can be involved, by direct condensation and / or evaporation, the coefficient of performance of the system is increased, characterized in that Module comprises two or more juxtaposed heat exchangers (1, 5) with corresponding inlets and outlets (15, 16) which can be connected to one another via a separate circuit (17) arranged in a housing (21), wherein a first heat exchanger ( 1) with a corresponding first

Connection (15, 16) in the first storage space (25), the second heat exchanger (5) with the corresponding second port (15, 16) protrude into a second storage space (29) and optionally existing further heat exchangers with their corresponding terminals in further storage spaces , wherein the storage spaces (25, 29) can be connected or disconnected, and wherein the heat exchangers (1, 5) are connected to a single heat pump, which is also located in the housing (21) from which the heat exchangers (1 , 5) and / or their supply lines (15, 16) protrude.

2. Module according to claim 1, characterized in that the

Heat pump components (18, 19, 20, 22, 23) are designed so that they serve for the production of heat, for the production of cold or for a combination of both applications.

3. Module according to claim 1 or 2, characterized in that it can be used both for domestic use as well as for commercial and industrial applications.

4. Module according to claim 1, 2 or 3, characterized in that the module with vertically or horizontally arranged heat exchangers (1, 5) is laterally mounted on the combined or the separate storage (24, 25), wherein the assembly via flanges (10, 11) or other suitable compounds.

5. Module according to claim 1, 2, 3 or 4, characterized in that the heat exchangers (1, 5) are designed as Rippenrohr-, smooth tube or plate heat exchanger.

6. Module according to one of the preceding claims 1 to 5, characterized in that when using plate heat exchangers (36, 37) with the associated charge pumps (38, 39) in the housing (21) are integrated, from which pipe leads (32, 34 ) and pipe outlets (33, 35) protrude into the associated storage space (25, 29).

7. Module according to one of the preceding claims 1 to 6, characterized in that for each heat exchanger (1, 5) a separate

Immersion tube (3, 9) is provided for one or more temperature sensor, which projects together with the heat exchanger (1, 5) into the storage space (25, 29).

8. Module according to one of the preceding claims 1 to 7, characterized in that in addition in each case an electric heater (2, 6) in the

Storage spaces (25, 29) protrudes, which in addition to the respective heat exchanger (1, 5) or, in the case of a finned tube heat exchanger, is arranged centrally in the same.

9. Module according to one of the preceding claims 1 to 8, characterized in that the module immediately adjacent to the flanges (10, 11) each have an eccentric (12) for exact horizontal and / or vertical mounting orientation.

10. Module according to one of the preceding claims 1 to 9, characterized in that each flange (10, 11) separate passages for the heat exchanger (1, 5), the dip tube (3, 9), the electric heater (2, 6) and optionally further components.

11. Module according to one of the preceding claims 1 to 10, characterized in that within the storage spaces (25, 29) plate heat exchangers (1, 5) are provided which with by the flanges (10, 11) guided Wärmetauscherzu- and derivatives ( 15, 16) are connected from the module.

12. Module according to one of the preceding claims 1 to 11, characterized in that the heat pump can also be designed as an electrically driven heat pump or as a thermal adsorption heat pump or as a thermal absorption heat pump.

13. Module according to one of the preceding claims 1 to 12, characterized in that according to need via a corresponding circuit, for example a four-way valve at least one of the heat exchanger (1, 5) from the condenser to the evaporator.