DE202018005757U1 - Improve energy storage using waste heat - Google Patents
Improve energy storage using waste heat Download PDFInfo
- Publication number
- DE202018005757U1 DE202018005757U1 DE202018005757.6U DE202018005757U DE202018005757U1 DE 202018005757 U1 DE202018005757 U1 DE 202018005757U1 DE 202018005757 U DE202018005757 U DE 202018005757U DE 202018005757 U1 DE202018005757 U1 DE 202018005757U1
- Authority
- DE
- Germany
- Prior art keywords
- compressed air
- heat
- energy storage
- waste heat
- energy
- 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.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/185—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters using waste heat from outside the plant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/42—Storage of energy
Abstract
Description
Pumpspeicherwerke sind bis jetzt die besten Energiespeicher. Doch leider sind die geeigneten Standorte für diese Speicher sehr rar. Druckluftspeicher haben einen sehr schlechten Wirkungsgrad von etwa dreißig Prozent. Grund dafür ist der Energieverlust in Form von Wärme während der Energiespeicherung. Wird ein Gas komprimiert, steigt die Temperatur des Gases an und diese Wärme geht verloren.Pumped storage plants are the best energy storage systems so far. Unfortunately, the suitable locations for these storage facilities are very rare. Compressed air accumulators have a very poor efficiency of around thirty percent. The reason for this is the loss of energy in the form of heat during energy storage. If a gas is compressed, the temperature of the gas rises and this heat is lost.
Doch man kann den Wirkungsgrad eines Druckluftspeichers stark verbessern. Bei der Energieabgabe wird dem Druckluftspeicher Wärme zugeführt. Idealerweis ist es Wärme die sonst ungenutzt in die Umwelt abgelassen würde. Wird dem Druckluftspeicher bei der Energieabgabe mehr Wärme zugeführt als dieser während der Energiespeicherung verloren hat, kann der Wirkungsgrad auf ein hohes Niveau angehoben werden.But you can greatly improve the efficiency of a compressed air reservoir. Heat is supplied to the compressed air reservoir when the energy is released. Ideally, it is heat that would otherwise be released into the environment unused. If more heat is supplied to the compressed air storage during the energy output than it lost during energy storage, the efficiency can be increased to a high level.
Biogasanlagen sollten nur Strom erzeugen, wenn Strom benötigt wird. Die Abgase aus den Gasmotoren/Gasturbinen sind sehr heiß. Mit diesen Abgasen kann der Wirkungsgrad eines Druckluftspeichers erhöht werden. Selbstverständlich kann auch jegliche Art von Abwärme zur Erhöhung des Wirkungsgrades von Druckluftspeicher verwendet werden.Biogas plants should only generate electricity when electricity is needed. The exhaust gases from the gas engines / gas turbines are very hot. The efficiency of a compressed air reservoir can be increased with these exhaust gases. Of course, any type of waste heat can also be used to increase the efficiency of compressed air storage.
Wird der Druckluftspeicher sehr stark erhitzt, kann in den Wärmetauscherkreislauf eine Art Ausdehnungsgefäß integriert werden. Als Energieträger kommt in dem Wärmetauscher normalerweise Wasser zum Einsatz. Der Druck im Wärmetauscherkreislauf kann sehr hoch werden, wenn das Wasser darin ebenfalls sehr stark erhitzt wird. Das treibt die Erstellungskosten in die Höhe. Um den Druck in dem System nicht zu stark ansteigen zu lassen, wird in dem Ausdehnungsgefäß des Wärmetauschers im kalten Zustand ein grobes Vakuum erzeugt. Damit kann erreicht werden, dass der Druck nur bis zu einem vorher bestimmten Wert steigen kann.If the compressed air reservoir is heated very strongly, a kind of expansion vessel can be integrated into the heat exchanger circuit. Water is normally used as the energy source in the heat exchanger. The pressure in the heat exchanger circuit can become very high if the water in it is also heated very strongly. This drives up the creation costs. In order not to let the pressure in the system rise too much, a rough vacuum is created in the expansion vessel of the heat exchanger when it is cold. This means that the pressure can only increase up to a predetermined value.
Stoffe mit einem niedrigen Siedepunkt können ebenfalls zur Energiespeicherung eingesetzt werden. Während der Energiespeicherung werden der Druck und die Temperatur in einem Bereich gehalten, in dem der Siedepunkt unterschritten wird. Dadurch wechselt der Stoff mit niedrigem Siedepunkt vom gasförmigen in den flüssigen Zustand und verkleinert dabei wesentlich sein Volumen.Substances with a low boiling point can also be used for energy storage. During energy storage, the pressure and temperature are kept in a range in which the boiling point is not reached. As a result, the substance with a low boiling point changes from the gaseous to the liquid state and thereby significantly reduces its volume.
Luft ist ein schlechter Wärmeleiter. Bei Fenstern wird Luft sogar als Isolierung eingesetzt. Deshalb ist es schwierig mit Hilfe eines Wärmetauschers im herkömmlichen Sinn, die notwendige Wärme schnell in den Druckluftspeicher zu übertragen. Abhilfe kann mit Rohren, die im Druckluftspeicher verlegt werden, geschaffen werden. Die Wärme wird sofort bei Bedarf im ganzen Druckluftspeicher verteilt und dadurch der Druck erhöht.Air is a poor heat conductor. Air is even used as insulation for windows. It is therefore difficult with the help of a heat exchanger in the conventional sense to quickly transfer the necessary heat to the compressed air storage. This can be remedied with pipes that are laid in the compressed air reservoir. The heat is immediately distributed throughout the compressed air reservoir as required, thereby increasing the pressure.
Auch Wasser kann im Druckluftspeicher mit erhitzt werden. Der Wasserdampf verteilt sich im ganzen Druckluftspeicher und verbessert die Wärmeübertragung vom Wärmetauscher auf die Druckluft. Außerdem wird der Wirkungsgrad des Druckluftspeichers mit dieser Maßnahme zusätzlich verbessert.Water can also be heated in the compressed air reservoir. The water vapor is distributed throughout the compressed air storage and improves the heat transfer from the heat exchanger to the compressed air. This measure also improves the efficiency of the compressed air reservoir.
Der hier vorgestellte Energiespeicher sollte vor allem dazu dienen, die Abschaltungen von erneuerbaren Energien zu verhindern wenn zu viel el. Strom vorhanden ist.The energy storage presented here should primarily serve to prevent the shutdown of renewable energies if there is too much electricity.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1.1.
- Abwärmewaste heat
- 2.Second
- Wärmetauscherheat exchangers
- 3.Third
- Umwälzpumpecirculating pump
- 4.4th
- Wärmetauscher im DruckluftspeicherHeat exchanger in the compressed air storage
- 5.5th
- Anschluss DruckluftCompressed air connection
- 6.6th
- Ausdehnungsgefäßexpansion tank
- 7.7th
- Rohrleitung WärmezirkulationPipeline heat circulation
- 8.8th.
- DruckluftspeicherCompressed air storage
- 9.9th
- Wasserwater
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE202018004662 | 2018-10-08 | ||
DE202018004662.0 | 2018-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202018005757U1 true DE202018005757U1 (en) | 2020-01-16 |
Family
ID=69320719
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202018005672.3U Expired - Lifetime DE202018005672U1 (en) | 2018-10-08 | 2018-12-11 | Improve energy storage using waste heat |
DE202018005757.6U Expired - Lifetime DE202018005757U1 (en) | 2018-10-08 | 2018-12-13 | Improve energy storage using waste heat |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202018005672.3U Expired - Lifetime DE202018005672U1 (en) | 2018-10-08 | 2018-12-11 | Improve energy storage using waste heat |
Country Status (1)
Country | Link |
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DE (2) | DE202018005672U1 (en) |
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2018
- 2018-12-11 DE DE202018005672.3U patent/DE202018005672U1/en not_active Expired - Lifetime
- 2018-12-13 DE DE202018005757.6U patent/DE202018005757U1/en not_active Expired - Lifetime
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DE202018005672U1 (en) | 2020-01-09 |
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Legal Events
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R207 | Utility model specification | ||
R156 | Lapse of ip right after 3 years |