GB2085573A - Warm Water Store for a Solar Collector - Google Patents
Warm Water Store for a Solar Collector Download PDFInfo
- Publication number
- GB2085573A GB2085573A GB8129243A GB8129243A GB2085573A GB 2085573 A GB2085573 A GB 2085573A GB 8129243 A GB8129243 A GB 8129243A GB 8129243 A GB8129243 A GB 8129243A GB 2085573 A GB2085573 A GB 2085573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- warm water
- storage container
- storage means
- water storage
- means according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S2080/03—Arrangements for heat transfer optimization
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A warm water storage means for connection to a solar collector includes a storage container (9) in the base of which there is a horizontally arranged double-jacketed pipe (12) having an inner jacket (14), an outer jacket (13) and an annular space (15) between them. The space 15 is sealed off from the storage container and is provided with inlets (6,8) and outlets (5,7) to the collector. A cold water feed pipe (10) leads into the central region of the inner jacket (14) and discharges against it, and the jacket (14) is open to the interior of the storage container (Fig. 3). <IMAGE>
Description
SPECIFICATION
Warm Water Store for a Solar Collector
The invention relates to a warm water store for connecting to at least one solar collector, with cold water feedpipe and warm water discharge pipe connected to a cylindrical storage container.
In US-PS 1 889 238 there is described such a store. The store is arranged at the upper edge of an inclined solar collector and through two connecting points connected with the same.
Water heated in the solar collector through natural convection (thermosiphon action) flows into the store and can be tapped from the same.
The advantage of such plant is the fact that no electrical installation is necessary and that the arrangement is constructed simply. It is therefore of great advantage when these installations are installed in places in which there is no electrical energy available and where an installation which requires no servicing is of particular importance.
The store according to US-PS 1 889 238 however has the disadvantage that the usable water itself flows through the solar collector, in other works a heat carrier medium whose characteristics are adapted to the conditions of the solar collector is not provided. In US-PS 1 242-511 there is described a warm water store with connected solar collector in which the heating of the store takes place via a heat exchanger helix which has a heat carrier medium flowing through it. This permits pressure equalisation in the heat carrier circuit. The heat carrier helix is disadvantageously arranged in the storage container and this can have a detrimental effect on the heat transfer.
It is the object of the invention to provide a warm water store of the aforementioned type with a heat exchanger in which the heat exchange can take place by natural convection, so that heat transfer to the usable water is advantageous and that the store can be simply constructed.
According to the invention the above object is achieved in that in the base region of the storage container there is horizontally arranged a double jacketed pipe whose annular space, arranged between inner and outer jacket, which is sealed with respect to the storage container, is provided with the connections for the solar collector, and the cold water feedpipe feeds into the central area of the inner jacket which is open to the storage container and which is directed towards the inner jacket.
The heat carrier medium heated by the solar collector enters the annual chamber and heats up the two jackets which give off their heat to the adjoining regions of water. The water thus heated through natural convention gradually rises upwards in the storage container into the region of the warm water outflow. When usable water is tapped, the inflowing cold water initially contacts the inner jacket from which the in-flowing cold water on both sides flows away from the inner jacket and thus on the one hand provides a large heat exchange surface, while on the other hand, however, a strong vortex action is created in the water layers.
It can be seen that the construction of the heat exchanger is so simple that an economic construction is possible and the twin circuit system ensures that the heat carrier circuit is safe from corrosion and that a heat carrier medium which is safe from frost can also be used.
In a preferred embodiment of the invention a sidewall of the storage container at the same time provides a wall part of a pressure equalising chamber to which the annular chamber is connected. By using the integrated pressure equalising chamber it is unnecessary to use a separate installation of a pressure equalising vessel.
In order to improve the use of the convection flow of the usable water in the storage container it is preferable to arrange the axis of the inner jacket at a slight angle with respect to the axis of the storage container.
One form of warm water store in accordance with the invention is described below, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 is a side elevation of the solar warm water store,
Fig. 2 is a plan view of the store according to
Fig. 1,
Fig. 3 is a schematic side elevation of the storage container, and
Fig. 4 is a schematic cross-section of the storage container along line IV-IV according to
Figure 3.
The solar collector store according to Figs 1 and 2 comprises two solar collectors 1 and 2.
These are arranged at an angle held at the upper edge by a frame 3 and at the lower edge supported by a support vessel 4. The pipe system of each of the two collectors 1 and 2 comprises a feed connection 5 or 7 and a discharge connection 6 or 8. On the frame3 there is mounted a storage container 9 to which is connected a cold water supply pipe 10 and a warm water discharge pipe 1 The cylindrical storage container 9 is arranged in a horizontal position.
In the base region of the storage container 9 there is arranged a double jacketed pipe 12 whose diameter is smaller than the radius of the storage container 9. The double jacketed pipe 12 is made up of an outer jacket 13 and an inner jacket 14. The annular chamber 1 5 between the outer jacket 13 and the inner jacket 14 is sealed with respect to the storage container 9. In the annular chamber 15 the discharge pipes 6 and 8 are connected at the top and the feedpipes 5 and 7 of the solar collectors 1 and 2 are connected at the bottom. The annular chamber 15 is connected with a pressure equulisation chamber 17 through a connecting tube 16. The pressure equalisation chamber 17 is formed by an end cap 18 of the storage container 9 and a further cap 19 seated on top of the first cap.
Connected to the annular chamber 15 is furthermore a charging and ventilating pipe 20 which through the storage container 9 leads to the outside.
The inner space 21 of the inner jacket 13 in any case is in direct contact with the storage chamber of the storage container 9. As can be seen in Figure 3 the double jacketed pipe 12 extends practically over the whole length of the storage container 9, however leaving on both sides a gap of such dimensions between the double jacketed pipe 12 and the storage container 9 that water flow from the inner chamber 21 towards the top is possible.
A cold water fcednine 1 n is provided with a s;ety valve V and extends approximately to the centre of the inner jacket 14 and at this point is angled in such a way that the outflow opening is directed towards the inner jacket 14.
The axis of the outer jacket 13 is arranged essentially parallel to the axis of the storage container 9. The axis of the inner jacket 14 on the other hand is slightly inclined towards the axis of the outer jacket 13 or the storage container 9.
The inner jacket 14 is therefore arranged at a slight incline from bottom to the top.
The warm water discharge pipe 11 extends into the centre of the storage container 9, has its flow-in right at the top and is directed upwards.
The pipe system of the solar collectors 1 and 2 as well as the annular chamber 15 and partly the pressure equalisation chamber 17 (see the level line 22) are filled with a heat carrier liquid. The ventilation pipe 20 is closed.
After the pipes 10 and 11 have been connected to the water circuit the storage container 9 is filled with water.
The arrangement described works as follows:
When the sun's rays hit the solar collectors 1 and 2 the heat carrier liquid becomes warmed and under the action of convenction flows through the openings 6 and 8 at the top into the annual chamber 15. By offsetting the feed openings 5, 7 and discharge openings 6, 8 in the annular chamber 15 (see Figure 3) it is ensured that the outer jacket 13 and the inner jacket 14 become heated along their entire length. As the heat carrier liquid becomes warm it expands. A quantity of heat carrier liquid corresponding to the expansion volume of the same compresses the volume of low pressure fair in the pressure equalisation chamber 17.
The pressure in the heat carrier circuit therefore rises only in an advantageous manner and this even in the case when no usable water is taken. During cooling of the heat carrier liquid the said process takes place in the reverse sequence.
In the course of operation it cannot be excluded that air bubbles collect in the top of the annular chamber 15. The space between the inner jacket 14 and the outer jacket 13 is sufficiently large so as not to affect the operation in a detrimental manner. Occasionally it is possible to allow accumulated air to be discharged through the ventilation pipes 20.
The jackets 13 and 14 transfer heat to the water enabling this also to flow upwards by means of convection. The angular positioning of the inner jacket 14 helps the heat flow when no water enters through the cold water supply line 10. Without vorticity there will be different temperature layers in the storage container 9.
When warm water is tapped at pipe 1 cold water will flow through the pipe 10 to replace the warm water 10. This initially contacts the inner jacket 14 and then flows along both sides out of the inner chamber 21, thus extracting heat from the inner jacket 14. The creation of vortices in the different layers of water because of the inflowing cold water is therefore prevented.
Because lhe storage container 9 functions as a warm water store it is provided with a heat insulation, but this is not shown in the accompanying drawings.
Within the context of the invention a number df other embodiment examples also exist. Thus for example, it is also possible to install the solar collectors 1 and 2 on the one hand and the storage container 9 on the other hand at separate places, for example on a roof or beneath a roof. If under unfavourable conditions the convection effect is insufficient for the required transport of the heat carrier medium, it Is possible to use a circulating pump which, however, requires electrical energy.
The double jacketed pipe 12 may also be of rectangular cross-section.
Claims (10)
1. Warm water storage means for connecting to at least one solar collector, with a cold water supply pipe and a warm water discharge pipe fitted to a storage container, wherein the base region of the storage container houses a horizontally arranged, double-jacketed pipe whose annular space arranged between inner and outer jacket is sealed with respect to the storage container and is provided with connections for the solar collector, and the cold water feed pipe feeds into the central area of the inner jacket, which is open to the storage container, and is directed towards the inner jacket.
2. Warm water storage means according to
Claim 1, wherein a side wall of the storage container also forms a wall part of a pressure equalisation chamber to which the annular space is connected.
3. Warm water storage means according to
Claim 1 or 2, wherein the inner jacket is slightly inclined with respect to the horizontal.
4. Warm water storage means according to
Claim 1, 2, or 3, wherein the double-jacketed pipe extends essentially over the entire length of the storage container.
5. Warm water storage means according to any one of the preceding claims, wherein the annular chamber has connecting pipes leading into the top part of the annular chamber.
6. Warm water storage means according to any one of the preceding claims, wherein feed and discharge pipes are fitted to the double-jacketed pipe in offset manner
7. Warm water storage means according to any one of the preceding claims, wherein, at the top of the double-jacketed pipe there is arranged a ventilating pipe extending through the storage container to the extension thereof.
8. Warm water storage means according to any one of the preceding claims, wherein the opening of the cold water feed pipe is directed downwardly towards the inner jacket.
9. Warm water storage means according to any one of the preceding claims, wherein the warm water discharge pipe extends into the centre of the storage contci;er and is then directed upwardly.
10. Warm water storage means substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803036244 DE3036244A1 (en) | 1980-09-26 | 1980-09-26 | HOT WATER TANK FOR A SOLAR COLLECTOR |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2085573A true GB2085573A (en) | 1982-04-28 |
| GB2085573B GB2085573B (en) | 1983-12-21 |
Family
ID=6112862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8129243A Expired GB2085573B (en) | 1980-09-26 | 1981-09-28 | Warm water store for a solar collector |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3036244A1 (en) |
| GB (1) | GB2085573B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001181A1 (en) * | 1985-08-14 | 1987-02-26 | Gerhard Weber | Sun energy device for hot water production |
| EP1340948A1 (en) * | 2002-02-27 | 2003-09-03 | Green&one&TEC&Solarindustrie GmbH | Storage tank for thermosyphon apparatuses |
| CN102635959A (en) * | 2012-04-01 | 2012-08-15 | 王树 | Wall-mounted solar water heater |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT388232B (en) * | 1982-09-16 | 1989-05-26 | Mueller Rudolf | SYSTEM AND STORAGE FOR HOT WATER HEATING BY MEANS OF SOLAR ENERGY |
| DE102008007799A1 (en) * | 2008-02-06 | 2009-08-13 | Martin Lippmann | Solar low-temperature flat-plate collector for industry and household applications, has absorber plate connected with aluminum frame, where collector water is in direct contact with absorber plate and is not guided in pipes |
| DE102013218966A1 (en) * | 2013-09-20 | 2015-03-26 | Aventa As | Thermosiphon collector and method for its production |
| DE202015006547U1 (en) | 2015-09-22 | 2015-11-24 | Jürgen Bretschneider | Device for heat transfer |
-
1980
- 1980-09-26 DE DE19803036244 patent/DE3036244A1/en not_active Withdrawn
-
1981
- 1981-09-28 GB GB8129243A patent/GB2085573B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001181A1 (en) * | 1985-08-14 | 1987-02-26 | Gerhard Weber | Sun energy device for hot water production |
| EP1340948A1 (en) * | 2002-02-27 | 2003-09-03 | Green&one&TEC&Solarindustrie GmbH | Storage tank for thermosyphon apparatuses |
| CN102635959A (en) * | 2012-04-01 | 2012-08-15 | 王树 | Wall-mounted solar water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2085573B (en) | 1983-12-21 |
| DE3036244A1 (en) | 1982-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |