DE2856374A1 - Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water - Google Patents

Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water

Info

Publication number
DE2856374A1
DE2856374A1 DE19782856374 DE2856374A DE2856374A1 DE 2856374 A1 DE2856374 A1 DE 2856374A1 DE 19782856374 DE19782856374 DE 19782856374 DE 2856374 A DE2856374 A DE 2856374A DE 2856374 A1 DE2856374 A1 DE 2856374A1
Authority
DE
Germany
Prior art keywords
latent heat
heat storage
storage medium
solar energy
water
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Withdrawn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
DE19782856374
Other languages
German (de)
Inventor
Uwe Breinlinger
Thomas Schaeuble
Roland Zimmer
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.)
ZIMMER ROLAND DIPL MATH
Original Assignee
ZIMMER ROLAND DIPL MATH
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 ZIMMER ROLAND DIPL MATH filed Critical ZIMMER ROLAND DIPL MATH
Priority to DE19782856374 priority Critical patent/DE2856374A1/en
Publication of DE2856374A1 publication Critical patent/DE2856374A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

An alcohol the m.pt. of which is at a temp. approaching that which is desired for the water to be circulated for use, is employed as a storage medium in a latent heat store absorbing solar energy; the principle exploited being that of the alteration of the condition of the aggregate from solid to fluid. This arrangement overcomes the problems of the use of salt hydrates which tend to become excessively cool and which are less sol. at high temps.

Description

Latentwärmespeicher haben die Aufgabe, die von den Sonnenkollek-Latent heat storage systems have the task of

toren gelieferte Energie zu speichern, um die jahreszeitlichen, täglichen und meteorologischen Schwankungen der Sonnenstrahlung auszugleichen und damit die Nutzung der Sonnenenergie bei Warmwasserbereitwig und Heizung effektiver zu machen.gates to store the energy supplied to the seasonal, daily and to compensate for meteorological fluctuations in solar radiation and thus the To make use of solar energy for hot water and heating more effective.

Es ist bekannt in Latentwärmespeichern Speichermedien einzusetzen, die für die Änderung des Aggregatzustandes "test-fldssig" geeignet sind, wie zum Beispiel Salzhydrate(Deutsche Gesellschaft fUr Sonnenenergie: Heizen mit Sonne Bd. 3, Freiburg 1977).It is known to use storage media in latent heat storage media, which are suitable for changing the state of aggregation "test-liquid", such as for Example salt hydrates (German Society for Solar Energy: Heating with the Sun, Vol. 3, Freiburg 1977).

Bei der Verwendung bisher bekannter Latentspeichermedien traten jedoch Schwierigkeiten auf. So neigen Salzhydrate zum UnteriUhlen, bevor die Kristallisation einsetzt. Zusätzliche tonplikationen entstehen bei diesen Stoffen durch die Abnahme der Löslichkeit bei steigender Temperatur.When using previously known latent storage media, however, occurred Difficulties arise. Salt hydrates, for example, tend to undercut before crystallization begins. Additional tonal applications arise from the acceptance of these fabrics the solubility with increasing temperature.

Der Erfindung liegt die Aufgabe zugrunde, ein wärmespeicheriedium bei der Solarwärmegewinnung aufzufinden, das die vorgenannten Nachteile nicht aufweist und das im üblichen Brauchwassertesperaturbereich zu verwenden ist.The invention is based on the object of a wärmespeicheriedium to find in solar heat recovery that does not have the aforementioned disadvantages and that is to be used in the normal service water temperature range.

Es'wurde gefunden, daß zur Lösung dieser Aufgabe Alkohole geeignet sind, deren Schmelzpunkt im Brauchwassertemperaturbereich liegt.It has been found that alcohols are suitable for solving this problem whose melting point is in the domestic water temperature range.

Hierzu geeignete Alkohole sind beispielsweise Stearylalkohol, Hexadecanol oder Octandiol.Alcohols suitable for this purpose are, for example, stearyl alcohol and hexadecanol or octanediol.

Die Erfindung betrifft auch ein Latentwärmespeichersyste in Verbindung mit Solarkollektoren, wobei das Speichermedium seinen Aggregatzustand zwischen fest und flUssig ändert, dadurch gekennzeichnet, daß man als Medium die oben beschriebenen Alkohole verwendet.The invention also relates to a latent heat storage system in connection with solar collectors, the storage medium being fixed between its physical state and liquid changes, characterized in that the medium described above is used as the medium Alcohols used.

Ein Ausfuhru£igsbeispiel der Erfindung ist in der beiliegenden Zeichnung dargestellt.An exemplary embodiment of the invention is shown in the accompanying drawing shown.

Claims (2)

Verwendung eines Latentwärmespeichermediums bei der Solarwärmegewinnung Patentansnrüche 1. Verwendung von Wärmespeichermedien in einem Latentwärmespeicher unter Ausnutzung der Aggregatzustandeänderung "£est-flüssig", d a d u r c h g e k e n n z e i e h n e t , daß man als Speichermedium einen Alkohol verwendet, dessen Schmelzpunkt im Brauchwassertemperaturbereich liegt.Use of a latent heat storage medium for solar heat generation Claims 1. Use of heat storage media in a latent heat storage taking advantage of the change in the state of aggregation "est-liquid", d a u r c h g e it is not stated that an alcohol is used as a storage medium, its Melting point is in the domestic hot water temperature range. 2. Latentwärmespeichersystem in Verbindung mit Solarkollektoren, wobei das Speichermedium seinen Aggregatzustand zwischen fest und flUssig ändert, d a d u r c h g e k e n n z e i c h n e t daß man ein Medium nach Anspruch 1 verwendet.2. Latent heat storage system in connection with solar collectors, whereby the storage medium changes its physical state between solid and liquid, i.e. it is indicated that a medium according to claim 1 is used.
DE19782856374 1978-12-27 1978-12-27 Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water Withdrawn DE2856374A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782856374 DE2856374A1 (en) 1978-12-27 1978-12-27 Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782856374 DE2856374A1 (en) 1978-12-27 1978-12-27 Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water

Publications (1)

Publication Number Publication Date
DE2856374A1 true DE2856374A1 (en) 1980-07-10

Family

ID=6058515

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782856374 Withdrawn DE2856374A1 (en) 1978-12-27 1978-12-27 Latent heat storage medium for utilising solar energy - comprising alcohol melting at temperature required for water

Country Status (1)

Country Link
DE (1) DE2856374A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3137290A1 (en) * 1980-10-02 1982-05-19 Alfa-Laval AB, 14700 Tumba Method and device for storing heat at low temperature, and the use thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3137290A1 (en) * 1980-10-02 1982-05-19 Alfa-Laval AB, 14700 Tumba Method and device for storing heat at low temperature, and the use thereof

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