DE2555430A1 - Solar energy water heating device - provided with a closed system contg. an azeotropic mixt. of methyl propylene glycol and water - Google Patents
Solar energy water heating device - provided with a closed system contg. an azeotropic mixt. of methyl propylene glycol and waterInfo
- Publication number
- DE2555430A1 DE2555430A1 DE19752555430 DE2555430A DE2555430A1 DE 2555430 A1 DE2555430 A1 DE 2555430A1 DE 19752555430 DE19752555430 DE 19752555430 DE 2555430 A DE2555430 A DE 2555430A DE 2555430 A1 DE2555430 A1 DE 2555430A1
- Authority
- DE
- Germany
- Prior art keywords
- water
- propylene glycol
- heat
- methyl propylene
- solar 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/54—Electroplating of non-metallic surfaces
- C25D5/56—Electroplating of non-metallic surfaces of plastics
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- 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
- F24S80/20—Working fluids specially adapted for solar heat collectors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Einen geschlossenen Kreislauf durchlaufendes Wärmetransport- A closed cycle heat transfer system
mittel einer Anlage zur Ausnutzung von Sonnenenergie Die Erfindung bezieht sich auf ein einen geschlossenen Kreislauf durchlaufendes Wärmetransportmittel einer Anlage zur Ausnutzung von Sonnenenergie, das in einem der Sonneneinwirkung ausgesetzten Wärmekollektor verdampft und in einem insbesondere als Wärmetauscher ausgebildeten Gerät unter Abgabe von Wärme wieder verflüssigt wird. means of a system for utilizing solar energy. The invention refers to a heat transfer medium running through a closed circuit a system for utilizing solar energy in one of the sun's effects exposed heat collector evaporates and in particular as a heat exchanger trained device is liquefied again with the release of heat.
Als Wärmetransportmittel in Anlagen zur Ausnutzung von Sonnenenergie sind in der Literatur Wasser und - ganz allgemein -Kältemittel vorgeschlagen worden.As a means of heat transport in systems for utilizing solar energy water and, more generally, refrigerants have been proposed in the literature.
Der Erfindung liegt die Aufgabe zugrunde, ein Wärmetransportmittel zu finden, das sich insbesondere durch hohe Dichte, hohe Verdampfungswärme, niedrigen Sattdampfdruck und niedrigen Gefrierpunkt auszeichnet.The invention is based on the object of a heat transport medium to find that is particularly characterized by high density, high heat of vaporization, low Saturated steam pressure and low freezing point.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß es das azeotrope Gemisch aus Methylpropylenglykol und Wasser mit 53 Gewichtsprozent Methylpropylenglykol sowie 47 Gewichtsprozent Wasser ist.According to the invention, this object is achieved in that it is the azeotropic Mixture of methylpropylene glycol and water with 53 percent by weight of methylpropylene glycol and 47 percent by weight is water.
Die Verwendung des azeotropen Gemisches aus 53 Gewichtsprozent Methylpropylenglykol und 47 Gewichtsprozent Wasser bringt folgende Vorteile: a) Der Nenndruck kann 1 bar betragen; bedingt preisgünstige Anlage; b) die Verdampfungswärme ist relativ hoch (z.B. 149 x 103kJ kg bei 400 C Sattdampftemperatur); daher kann die Umlaufmenge relativ klein gehalten werden, c) hohe Wärmeübergangskoeffizienten bei Blasenverdampfung und Kondensation; & des Methylpropylenglykol-Wasser-Azeotropsl,() bis 1,1 mal so groß wie goldes des Wassers; d.h.The use of the azeotropic mixture of 53 percent by weight methyl propylene glycol and 47 percent by weight water has the following advantages: a) The nominal pressure can 1 be in cash; conditionally inexpensive system; b) the heat of vaporization is relative high (e.g. 149 x 103kJ kg at 400 C saturated steam temperature); therefore, the amount in circulation can are kept relatively small, c) high heat transfer coefficients with bubble evaporation and condensation; & of the methyl propylene glycol-water azeotrope, () up to 1.1 times as big as the gold of the water; i.e.
kleine Wärmetauschflächen notwendig, d) keine Einfriergefahr im Winter; (Flockenbildung beginnt bei 350 C)> e) nicht giftig und ausgesprochen umweltfreundlich, f) hohe Dichte des Sattdampfes, g) fUr den Wärmetransport ist keine Umwälzpumpe erforderlich und h) Möglichkeit des Baus einfacher und wirtschaftlicher Haus-Sonnenenergie-Nutzungsgeräte zu erschwinglichen Preisen. small heat exchange surfaces necessary, d) no risk of freezing in winter; (Flake formation starts at 350 C)> e) non-toxic and extremely environmentally friendly, f) high density of saturated steam, g) there is no circulation pump for heat transport required and h) Possibility of building simple and economical house solar energy utilization devices at affordable prices.
In der Zeichnung ist das Grundschema einer Anlage zur Auswertung von Sonnenwärme dargestellt. Auf der Außenseite eines Hausdachs 1 ist der der Sonneneinstrahlung 2 ausgesetzte Wärmekollektor 3 angeordnet. Der Wärmekollektor 3 ist über Leitungen 4, 5 (Dampfleitung 4; Kondensatleitung 5) mit einem Wärmetauscher 6 verbunden. Das Rohrsystem im Wärmekollektor, die Leitungen 4, 5 und das Rohrsystem im Wärmetauscher bilden ein geschlossenes System, in dem das Wärmetransportmittel im Kreislauf geführt ist. Der Wärmetauscher gibt die Wärme an ein anderes Medium, z.B. kaltes Wasser, ab, was dadurch entsprechend erwärmt wird. Dieses erwärmte Wasser wird dann einem Verbraucher, z.B. im Haus installierten Heizkörpern zugeführt.The drawing shows the basic scheme of a system for evaluating Solar heat shown. On the outside of a house roof 1 is that of solar radiation 2 exposed heat collector 3 arranged. The heat collector 3 is via lines 4, 5 (steam line 4; condensate line 5) connected to a heat exchanger 6. That Pipe system in the heat collector, lines 4, 5 and the pipe system in the heat exchanger form a closed system in which the heat transport medium is circulated is. The heat exchanger transfers the heat to another medium, e.g. cold water, which is heated accordingly. This heated water then becomes one Consumers, e.g. heaters installed in the house.
Als Wärmetransportmittel wird das azeotrope Gemisch von Methylpropylenglykol und Wasser (53 Gewichtsprozent Methylpropylenglykol und 47 Gewichtsprozent Wasser) verwendet.The azeotropic mixture of methyl propylene glycol is used as the heat transport medium and water (53 percent by weight methyl propylene glycol and 47 percent by weight water) used.
Das Methylpropylenglykol (chemische Formel CH3 CH2 CHOH CH20H; Herstellung durch Anlagerung von 1 Mol Propylenoxyd an Methylalkohol) ist in der Verfahrenstechnik bekannt. Es wurde unseres Wissens bisher aber nur als Lösungsmittel eingesetzt.The methyl propylene glycol (chemical formula CH3 CH2 CHOH CH20H; manufacture by the addition of 1 mole of propylene oxide to methyl alcohol) is in process engineering known. To the best of our knowledge, however, it has only been used as a solvent so far.
Überraschenderweise hat sich nun aber gezeigt, daß das vorgenannte azeotrope Gemisch aus Methylpropylenglykol und Wasser als Wärmetransportmittel besondere Vorteile aufweist.Surprisingly, however, it has now been shown that the aforementioned azeotropic mixture of methyl propylene glycol and water as a special heat transport medium Has advantages.
Die Sonneneinstrahlung bewirkt die Verdampfung des Methylpropylenglykol-Wasser-Azeotrops im Wärmekollektor 3. Der entstehende Dampf strömt von selbst zum Wärmetauscher 6, wo er seine Kondensationswärme an das zu erwärmende Wasser abgibt. Das Kondensat fließt von selbst durch das geodätische Gefälle zum Wärmekollektor zurück, wo es erneut verdampft.The sunlight causes the evaporation of the methyl propylene glycol-water azeotrope in the heat collector 3. The resulting steam flows by itself to the heat exchanger 6, where it gives off its heat of condensation to the water to be heated. The condensate flows by itself through the geodetic gradient back to the heat collector, where it evaporated again.
Die Erfindung ist nicht auf die Verwendung des speziellen Wärmetransportmittels im Zusammenhang mit der Anlage gemäß dem dargestellten Grundschema beschränkt. So kann beispielsweise zwischen Wärmetauscher und Wärmekollektor auch eine Wärmepumpe vorgesehen sein.The invention is not limited to the use of the specific heat transport medium limited in connection with the system according to the basic diagram shown. So For example, a heat pump can also be installed between the heat exchanger and the heat collector be provided.
Bei dem angegebenen azeotropen Gemisch des Wärmetransportmittels handelt es sich um das aktive, im Kreislauf geführte Wärmetransportmittel. - Werden vom azeotropen Gemisch etwas abweichende Einfüllmischungen gewählt, dann stellt sich nach einer Anlaufphase das azeotrope Gemisch von selbst ein.In the specified azeotropic mixture of the heat transport agent acts it is the active, circulating heat transport medium. - Will be dated azeotropic mixture slightly different filling mixtures selected, then it turns out after a start-up phase, the azeotropic mixture starts up by itself.
Die entsprechende Überschußmenge des einen Gemischpartners verbleibt als inaktives Medium an einer geeigneten Stelle im Kreislauf.The corresponding excess amount of one mixture partner remains as an inactive medium at a suitable point in the circuit.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752555430 DE2555430A1 (en) | 1975-12-10 | 1975-12-10 | Solar energy water heating device - provided with a closed system contg. an azeotropic mixt. of methyl propylene glycol and water |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752555430 DE2555430A1 (en) | 1975-12-10 | 1975-12-10 | Solar energy water heating device - provided with a closed system contg. an azeotropic mixt. of methyl propylene glycol and water |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2555430A1 true DE2555430A1 (en) | 1977-06-16 |
Family
ID=5963933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19752555430 Pending DE2555430A1 (en) | 1975-12-10 | 1975-12-10 | Solar energy water heating device - provided with a closed system contg. an azeotropic mixt. of methyl propylene glycol and water |
Country Status (1)
Country | Link |
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DE (1) | DE2555430A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2945159A1 (en) * | 1979-11-02 | 1981-05-14 | Rolf Ing.(grad.) 6000 Frankfurt Rafflenbeul | Solar heat recovery system - uses vapour directed by diffusion into collector in continuous circuit |
US4290417A (en) | 1979-07-18 | 1981-09-22 | Walter Todd Peters | Solar heat system using gravitational circulation of heated transfer medium |
DE4224437A1 (en) * | 1992-07-24 | 1992-11-26 | Andreas Goetz | Heat transference in thermal solar system - involves circuit in which heat exchanger acts as condenser and collector as vaporiser |
-
1975
- 1975-12-10 DE DE19752555430 patent/DE2555430A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4290417A (en) | 1979-07-18 | 1981-09-22 | Walter Todd Peters | Solar heat system using gravitational circulation of heated transfer medium |
DE2945159A1 (en) * | 1979-11-02 | 1981-05-14 | Rolf Ing.(grad.) 6000 Frankfurt Rafflenbeul | Solar heat recovery system - uses vapour directed by diffusion into collector in continuous circuit |
DE4224437A1 (en) * | 1992-07-24 | 1992-11-26 | Andreas Goetz | Heat transference in thermal solar system - involves circuit in which heat exchanger acts as condenser and collector as vaporiser |
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Legal Events
Date | Code | Title | Description |
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OD | Request for examination | ||
OGA | New person/name/address of the applicant | ||
OHJ | Non-payment of the annual fee |