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DE3005450A1 - Thermal store with storage bodies - bodies are gas-tight outer casings with filled latent heat storage substance - Google Patents

Thermal store with storage bodies - bodies are gas-tight outer casings with filled latent heat storage substance

Info

Publication number
DE3005450A1
DE3005450A1 DE19803005450 DE3005450A DE3005450A1 DE 3005450 A1 DE3005450 A1 DE 3005450A1 DE 19803005450 DE19803005450 DE 19803005450 DE 3005450 A DE3005450 A DE 3005450A DE 3005450 A1 DE3005450 A1 DE 3005450A1
Authority
DE
Germany
Prior art keywords
storage
bodies
gas
filled
outer casings
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.)
Withdrawn
Application number
DE19803005450
Other languages
German (de)
Inventor
Erwin Dipl.-Ing. 6336 Solms Groß
Anton Ladislaus Dipl.-Ing. 6348 Herborn Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buderus AG
Original Assignee
Buderus AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Buderus AG filed Critical Buderus AG
Priority to DE19803005450 priority Critical patent/DE3005450A1/en
Publication of DE3005450A1 publication Critical patent/DE3005450A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/023Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14Thermal energy storage

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Buffer Packaging (AREA)

Abstract

The thermal store has storage bodies which ensure a fixed shape. These bodies are gas-tight outer casings with a filled latent heat storage substance. There are movable parts on the storage bodies to allow volume changes. There are recesses (3) on the stable outer casings (1) of the storage body and air- or gas-filled sheaths (5) of elastic material are fitted in the storage bodies. The cross-section of the thermal storage bodies may be circular with a cutout or recess shaped as an arc of a circle. There may be six recesses giving a generally hexagonal shape or four recesses giving a generally square shape.

Description

BUDERUS AKTIENGESELLSCHAFT
TP/F/St/PG 15-129 -Z-
BUDERUS AKTIENGESELLSCHAFT
TP / F / St / PG 15-129 -Z-

WärmespeicherHeat storage

Die Erfindiang betrifft einen Wärmespeicher nach dem Oberbegriff des Patentanspruches. Ein Speicher dieser Art ist dem DE-GM 77 38 267 zu entnehmen.The invention relates to a heat storage device according to the generic term of the claim. A memory of this type can be found in DE-GM 77 38 267.

Die Latentspeichermasse aus einem geeigneten Salz besitzt sehr große Speicherkapazitäten bei relativ kleinem Volumen. In ihr laufen während des Speicherns und des Entladens jeweils Phasenumwandlungen ab, welche die gewünschten großen Speicherkapazitäten zur Folge haben. Die Phasenumwandlungen führen dabei zu starken Volumenänderungen. Im abgekühlten, flüssigen Zustand ist das Volumen der Speichermasse wesentlich kleiner als im erwärmten festen Zustand.The latent storage mass made from a suitable salt has very large storage capacities with a relatively small volume. Phase changes take place in it during storage and discharge, which are the desired large ones Result in storage capacities. The phase changes lead to strong changes in volume. In the cooled, In the liquid state, the volume of the storage mass is significantly smaller than in the heated solid state.

Da ein Diffundieren von schädlichen Bestandteilen durch die Außenhüllen der Speicherkörper auf jeden Fall verhindert werden muß, sind gasdicht verschlossene Hüllen erforderlich. Das bedeutet, daß diese Hüllen den fortwährenden Volumenänderungen folgen müssen oder daß sie so stabil sein müssen, daß sie den starken Druckschwankungen widerstehen können. Als Hüllen, die den Volumenänderungen folgen, haben sich flexible Schläuche bzw. Kissen, etwa aus Gummi bewährt. Sehr stabile Hüllen sind teuer und aufwendig. Sie verschlechtern den Wärmeübergang. Weniger dicke, jedoch noch eigenstabile Hüllen können bei hermetisch verschlossenen Speicherkörpern infoige des entstehenden Unterdrucks einklappen. An der Knickstelle entstehen dann unzulässig hohe Dauerwechselbeanspruchungen .Since a diffusion of harmful constituents through the outer shell of the storage body is prevented in any case must be, gas-tight sealed envelopes are required. This means that these envelopes are constantly changing in volume must follow or that they must be so stable that they can withstand the strong pressure fluctuations. Flexible tubes or cushions, for example made of rubber, have proven to be useful as covers that follow the changes in volume. very stable covers are expensive and complex. They worsen the heat transfer. Less thick, but still inherently stable In the case of hermetically sealed storage bodies, covers can fold in information about the resulting negative pressure. At the In this case, the kink is exposed to inadmissibly high continuous alternating loads.

130034/0369130034/0369

Es sollen Speicherkörper geschaffen werden, die ihre Form bewahren, die aber nicht so stabil ausgeführt sind, daß die erwähnten negativen Eigenschaften zum Tragen kommen.The aim is to create storage bodies that retain their shape that are not made so stable that the mentioned negative properties come into play.

Gemäß der Erfindung erfolgt dieses durch die im Kennzeichen des Anspruches 1 genannte Maßnahme.According to the invention, this is done by means of the identifier of claim 1 mentioned measure.

Als bewegliche Partien eignen sich vorgegebene Einbuchtungen der an sich formstabilen Außenhüllen, die ihre Lage verändern können. Es werden nicht mehr gewisse Partien bei einer Volumenverringerung der Speichermasse nach innen gezogen, was erst zum Entstehen von Knickstellen führt, sondern die Knickstellen sind bereits im Urzustand der Hüllen vorhanden. Um diese Knickstellen können sich die Einbuchtungen bewegen. Somit sind die Druck- und Zugspannungen in der Wand und die Dauerwechselbeanspruchungen an der Knickstelle wesentlich verringert. .Predefined indentations in the inherently dimensionally stable outer shells, which change their position, are suitable as movable parts can. There are no longer certain games in one Volume reduction of the storage mass pulled inwards, which only leads to the development of kinks, but the kinks are already present in the original state of the envelopes. The indentations can be located around these kinks move. This means that the compressive and tensile stresses are in the wall and the alternating stresses are at the kink significantly reduced. .

Eine andere Möglichkeit zur Erzeugung eines Druckausgleiches besteht darin, daß in die Speicherkörper mit formstabilen Außenhüllen luft- oder gasgefüllte Hüllen aus elastischem Material wie etwa Niederdruckpolyäthylen eingelegt werden. Ohne Veränderung der Außenhüllen lassen sich so Volumenänderungen der Speichermasse auffangen.Another way to create a pressure equalization consists in that in the storage body with dimensionally stable outer shells air or gas-filled shells made of elastic Material such as low-pressure polyethylene can be inserted. Volume changes can be made without changing the outer shell the storage mass.

Grundsätzlich wäre es auch möglich, die Speicherkörper mit einer elastischen Außenhülle auszustatten und die Formstabilität durch ein netzartiges Stützskelett zu erreichen. Die Konturen der Außenhülle können sich dann innerhalb des StützSkelettes frei verändern.In principle, it would also be possible to equip the storage bodies with an elastic outer shell and to ensure dimensional stability to be reached by a net-like supporting skeleton. The contours of the outer shell can then be within the Free change of supporting skeletons.

130034/0369130034/0369

Die beigefügte Zeichnung stellt Ausfühningsbeispiele der Erfindung dar. Es zeigt:The attached drawing represents exemplary embodiments of the invention. It shows:

Fig. 1: Drei mögliche Querschnittsformen von Speicherkörpern mit Einbuchtungen,Fig. 1: Three possible cross-sectional shapes of storage bodies with indentations,

Fig. 2: Einen Längs- und einen Querschnitt durch einen Speicherkörper mit flexiblen Einlagen,Fig. 2: A longitudinal and a cross section through a storage body with flexible inserts,

Fig. 3: Einen Längs- und einen Querschnitt durch einen Speicherkörper mit einem Stützskelett.Fig. 3: A longitudinal and a cross section through a storage body with a supporting skeleton.

Die Speicherkörper besitzen eine Außenhülle 1 und eine Füllung einer geeigneten LatentSpeichermasse 2. Die Außenhülle aus einem Material mit ausreichender Eigenstabilität hat gemäß Fig. 1 Einbuchtungen 3> die um längs verlaufende Knickstellen 4 ihre Lage verändern können. Auf diese Weise sind Volumenveränderungen der Speichermasse auszugleichen. Die Fig. 1 a,b und c zeigen jeweils eine wechselnde Anzahl von Einbuchtungen auf dem Umfang der Außenhüllen verteilt.The storage bodies have an outer shell 1 and a filling of a suitable latent storage mass 2. The outer shell 1, made of a material with sufficient inherent stability, has indentations 3> which can change their position around longitudinal kinks 4. In this way changes in the volume of the storage mass must be compensated for. FIGS. 1 a, b and c each show a changing number distributed by indentations on the circumference of the outer sheaths.

Nach Fig. 2 bleibt die Außenhülle 1 konstant. Die Belastung mit der zu erwartenden Formveränderung im Falle der Volumenveränderung der Speichermasse 2 wird durch eine eingelegte luftgefüllte Hülle 5 aus elastischem Material verhindert.According to Fig. 2, the outer shell 1 remains constant. The load with the expected change in shape in the case of a change in volume the storage mass 2 is prevented by an inserted air-filled envelope 5 made of elastic material.

Nach Fig. 3 besteht die Außenhülle 1 selbst aus elastischem Material. Die Formstabilität wird durch ein äußeres Stützskelett 6 erzielt. In den Fig. 1-3 ist nur der prinzipielle Aufbau angedeutet. Einzelheiten wie etwa verschweißte Einfüllstutzen sind nicht dargestellt.According to Fig. 3, the outer shell 1 itself consists of an elastic material. The dimensional stability is ensured by an external supporting skeleton 6 scored. Only the basic structure is indicated in FIGS. 1-3. Details such as welded filler necks are not shown.

130034/0369130034/0369

Claims (4)

BUDERUS AKTIENGESELLSCHAFT TP/F/St/PG 15-129 PatentansprücheBUDERUS AKTIENGESELLSCHAFT TP / F / St / PG 15-129 patent claims 1.Ί Wärmespeicher mit eine festgelegte Form bewahrenden Speicherkörpern aus gasdichten Außenhüllen und einer eingefüllten Latentspeichermasse, gekennzeichnet durch Volumenveränderungen zulassende bewegliche Partien an den Speicherkörpern.1.Ί Heat storage with storage bodies that retain a defined shape made of gas-tight outer shells and a filled latent storage mass, characterized by volume changes allowable moving parts on the storage bodies. 2. Wärmespeicher nach Anspruch 1, gekennzeichnet durch ihre Lager verändernde Einbuchtungen (3) der an sich formstabilen Außenhüllen (1) der Speicherkörper.2. Heat accumulator according to claim 1, characterized by indentations (3) which change their bearings and which are inherently dimensionally stable Outer shells (1) of the storage body. 3. Wärmespeicher nach Anspruch 1, gekennzeichnet.durch in die Speicherkörper mit formstabilen Außenhüllen (1) eingelagerte luft- oder gasgefüllte Hüllen (5) aus elastischem Material.3. Heat storage device according to claim 1, characterized.by in the Storage body with dimensionally stable outer shells (1) embedded air- or gas-filled shells (5) made of elastic Material. 4. Wärmespeicher nach Anspruch 1, gekennzeichnet durch elastische Außenhüllen (1) der Speicherkörper und durch ein netzartiges, eine vorgegebene Form einhaltendes Stützskelett (6).4. Heat accumulator according to claim 1, characterized by elastic outer shells (1) of the storage body and through a net-like supporting skeleton (6) maintaining a predetermined shape. 130034/0369130034/0369
DE19803005450 1980-02-14 1980-02-14 Thermal store with storage bodies - bodies are gas-tight outer casings with filled latent heat storage substance Withdrawn DE3005450A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19803005450 DE3005450A1 (en) 1980-02-14 1980-02-14 Thermal store with storage bodies - bodies are gas-tight outer casings with filled latent heat storage substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803005450 DE3005450A1 (en) 1980-02-14 1980-02-14 Thermal store with storage bodies - bodies are gas-tight outer casings with filled latent heat storage substance

Publications (1)

Publication Number Publication Date
DE3005450A1 true DE3005450A1 (en) 1981-08-20

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158378A1 (en) * 1984-03-02 1985-10-16 Philips Patentverwaltung GmbH Latent-heat tank for refrigeration
US4565242A (en) * 1981-03-13 1986-01-21 Kubota Ltd. Heat accumulating material enclosing container and heat accumulating apparatus
FR2609536A1 (en) * 1987-01-13 1988-07-15 Jean Patry FILLING BODY FOR RECEIVING LATENT HEAT ENERGY STORAGE AGENT FOR FUSION-CRYSTALLIZATION
EP0304883A1 (en) * 1987-08-25 1989-03-01 Zenshin Electric Power Engineering Co., Ltd. Heat accumulator element
US5090207A (en) * 1987-02-06 1992-02-25 Reaction Thermal Systems, Inc. Ice building, chilled water system and method
US5853045A (en) * 1995-03-31 1998-12-29 Patry; Jean Accumulator-exchanger device
WO1999058912A1 (en) * 1998-05-11 1999-11-18 Integral Energietechnik Gmbh Ice-filled cold accumulator for repeated freezing and melting
ITMI20121815A1 (en) * 2012-10-25 2013-01-24 Gioacchino Nardin EQUIPMENT AND METHOD FOR REDUCING THE TEMPERATURE OF GASEOUS PROCESS PRODUCTS
CN103575145A (en) * 2013-11-04 2014-02-12 西安建筑科技大学 D-shaped latent heat storage component

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565242A (en) * 1981-03-13 1986-01-21 Kubota Ltd. Heat accumulating material enclosing container and heat accumulating apparatus
EP0158378A1 (en) * 1984-03-02 1985-10-16 Philips Patentverwaltung GmbH Latent-heat tank for refrigeration
FR2609536A1 (en) * 1987-01-13 1988-07-15 Jean Patry FILLING BODY FOR RECEIVING LATENT HEAT ENERGY STORAGE AGENT FOR FUSION-CRYSTALLIZATION
EP0277847A1 (en) * 1987-01-13 1988-08-10 Jean Patry Storage body containing an energy-accumulating material providing high fusion-crytallisation latent heat
US4768579A (en) * 1987-01-13 1988-09-06 Jean Patry Recipient design to contain an energy storage medium with high fusion-crystallization latent heat
US5090207A (en) * 1987-02-06 1992-02-25 Reaction Thermal Systems, Inc. Ice building, chilled water system and method
US5042459A (en) * 1987-08-25 1991-08-27 Zenshin Electric Power Engineering Inc. Heat accumulator element
EP0304883A1 (en) * 1987-08-25 1989-03-01 Zenshin Electric Power Engineering Co., Ltd. Heat accumulator element
US5853045A (en) * 1995-03-31 1998-12-29 Patry; Jean Accumulator-exchanger device
WO1999058912A1 (en) * 1998-05-11 1999-11-18 Integral Energietechnik Gmbh Ice-filled cold accumulator for repeated freezing and melting
US6308530B1 (en) 1998-05-11 2001-10-30 Integral Energietechnik Gmbh Ice-filled cold storage means for repeated freezing and melting
ITMI20121815A1 (en) * 2012-10-25 2013-01-24 Gioacchino Nardin EQUIPMENT AND METHOD FOR REDUCING THE TEMPERATURE OF GASEOUS PROCESS PRODUCTS
CN103575145A (en) * 2013-11-04 2014-02-12 西安建筑科技大学 D-shaped latent heat storage component
CN103575145B (en) * 2013-11-04 2015-04-15 西安建筑科技大学 D-shaped latent heat storage component

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