DE2554095A1 - Solar collector with double plastic pipe - with direct connection to drinking water supply - Google Patents

Solar collector with double plastic pipe - with direct connection to drinking water supply

Info

Publication number
DE2554095A1
DE2554095A1 DE19752554095 DE2554095A DE2554095A1 DE 2554095 A1 DE2554095 A1 DE 2554095A1 DE 19752554095 DE19752554095 DE 19752554095 DE 2554095 A DE2554095 A DE 2554095A DE 2554095 A1 DE2554095 A1 DE 2554095A1
Authority
DE
Germany
Prior art keywords
pipe
solar collector
drinking water
plastic pipe
direct connection
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
Application number
DE19752554095
Other languages
German (de)
Inventor
Wilfried Ing Grad Kromer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19752554095 priority Critical patent/DE2554095A1/en
Publication of DE2554095A1 publication Critical patent/DE2554095A1/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/73—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits being of plastic material
    • 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
    • Y02E10/44—Heat exchange systems

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

Solar collector in which the heated water can be passed to existing heating installations comprises a relatively cheap double plastic pipe which can easily be mounted on a house roof. to maintain throughflow of water without additional energy consumption, the solar collector is connected by a pressure-reducing valve to the drinking water pipe. Rate of throughflow is controlled by a metering valve at the output of the collector. The plastic pipe can be mfd. in an extruder press, and is flexible and can therefore be attached to the roof in coil form with simple support means. The angle of incidence of sun rays in all positions of the sun is always perpendicular to the pipe dia. due to the round pipe cross-section. A circulating pump is eliminated by direct connection to the drinking water supply.

Description

B e s c h r e i b u n g Description

Titel: Sonnenkollektor aus Kunststoffrohren Anwendungsgebiet: Die Erfindung betrifft einen Sonnenkolleltor aus Jtunststoffrohren, durch den Wasser fließt, das durch Sonnenenergie aufgeheizt wird. Das erwärmte Wasser kann bestehenden Heizungsanlagen zugeleitet werden.Title: Solar collector made of plastic pipes Area of application: The The invention relates to a solar panel door made of plastic pipes through which water flows that is heated by solar energy. The heated water can be existing Heating systems are fed.

Zweck: Durch die Gewinnung von Warmwasser aus Sonnenenergie sollen die herkömmlichen Energieträger wie Erdöl, Gas, Kohle u.a. entlastet und auf längere Sicht eine Kostenminderung erzielt werden. Gleichzeitig wird auch die Verschmutzung infolge Ruß- und Ab gas entwicklung herabgesetzt.Purpose: The aim is to obtain hot water from solar energy the conventional energy sources such as crude oil, gas, coal, etc. relieved and for a longer period of time A cost reduction can be achieved. At the same time there is also pollution reduced as a result of soot and exhaust gas development.

Stand der Technik mit Fundstellen: Die Erkenntnis, Sonnenstrahlen durch dunkle Stoffe zu absorbieren um damit Wasser aufzuheizefis-rird schon seit längerem praktisch nutzbar gemacht ( siehe auch die Broschüre " Solarenergie heute ", herausgegeben von der Firma Walter Zink in Nürtingen).State of the art with sites of discovery: The knowledge, sun rays to absorb through dark fabrics in order to heat up water has been around for a long time Made practically usable for a longer period of time (see also the brochure "Solar Energy Today ", published by Walter Zink in Nürtingen).

Kritik des Standes der Technik: Der Bauaufwand und die davon abhängenden Herstellungskosten sind beträchtlich und oft bereitet auch die anzustrebende senkrecht zum Strahleneinfall aufzustellende Kollektorfläche weitere aufwendige Maßnahmen.Criticism of the state of the art: The construction costs and the ones that depend on it Manufacturing costs are considerable and often the desired vertical one also prepares Collector surface to be set up for incidence of radiation, further elaborate measures.

Aufgabe: Das Ziel der Erfindung ist, die Herstellungskosten von Sonnenkollektoren wesentlich zu vermindern, die Montage zu vereinfachen, Materialien auszuwählen, die den Wirkungsgrad verbessern und einen günstigen Strahleneinfallswinkel zu erzielen.Task: The aim of the invention is to reduce the manufacturing costs of solar panels to reduce significantly, to simplify assembly, to select materials, which improve the efficiency and achieve a favorable angle of incidence of the rays.

Lösung: Diese Aufgabe wird erfindungsmäßig dadurch gelöst, daß der Sonnenkollektor aus einem verhältnismäßig billigem doppeltem Kunststoffrohr besteht und in einfacher Weise auf einem Hausdach montiert werden kann.Solution: This object is achieved according to the invention in that the Solar collector consists of a relatively cheap double plastic tube and can be easily mounted on a house roof.

Weitere Ausgestal- Um den Wasserdurchfluß ohne zusätzlichen Energietung der Erfindung: aufwand aufrecht zu erhalten, wird der Sonnenkollektor mit einem Druckminderungsventil an die Trinkwasserleitung angeschlossen. Die Durchflußgeschwindigkeit regelt ein Dosierventil am Auslauf des Kollektors.Further designs around the water flow without additional energy the invention: effort to maintain is the solar collector connected to the drinking water pipe with a pressure reducing valve. The flow rate regulates a metering valve at the collector outlet.

Erzielbare Vorteile: Die Herstellung des doppelten t.unststoffrohres kann fabrikmäßig ait Hilfe einer Strangpresse vorgenommen werden. Das nststoffrohr ist biegsam und kann daher in Schneckenform mit einfachen Halterungen am Dach befestigt werden. Der Sonnenstrahleneinfallswinkel ist bei allen Sonnenstellungen, infolge des runden Rohrquerschnittes, immer senkrecht zu einem Rohrdurchmesser. Durch den Anschluß an die Trinkwasserversorgung wird eine Umwälzpumpe eingespart.Achievable advantages: The production of the double plastic pipe can be done at the factory using an extrusion press. The plastic pipe is flexible and can therefore be attached to the roof in a snail shape with simple brackets will. The angle of incidence of the sun's rays is a result of all sun positions of the round pipe cross-section, always perpendicular to a pipe diameter. Through the There is no need for a circulation pump connected to the drinking water supply.

Beschreibung eines Ausführungsbeispieles: Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Die obere Abbildung zeigt unmaßstäblich den in Schneckenform verlegten , 300m langen,Kollektor.Description of an exemplary embodiment: An exemplary embodiment the invention is illustrated in the drawing and will be described in more detail below. The picture above shows, not to scale, the 300m long collector laid in a spiral shape.

Unten ist ein Querschnitt des doppelten Kunststoffrohres dargestellt.A cross-section of the double plastic pipe is shown below.

Wirkungsweise: Aus der Trinkwasserleitung fließt das Wasser über einen Zähler zum Druckminderungsventil, worin der Wasserdruck soweit herabgesetzt wird, daß alle Gesamtwiderstände überwunden werden. Während des Durchflusses absorbiert das Wasser Sonnenenergie und erwärmt sich.How it works: The water flows over you from the drinking water pipe Counter for the pressure reducing valve, in which the water pressure is reduced so far, that all total resistances are overcome. Absorbed during flow the water solar energy and heats up.

Das erwärmte Wasser fließt mit einer errechneten konstanten Geschwindigkeit, geregelt vom Dosierventil, zu einem Warmwasserspeicher.The heated water flows at a calculated constant speed, regulated by the metering valve, to a hot water storage tank.

Die Anlage enthält die Berechnung des Beispieles.The appendix contains the calculation of the example.

Berechnung zum beschriebenen Beispiel Angenommene Strahlungsenergie ( laut Prof. Schöll ) 800 - 900 W/m² Aufheizung des Absorptionsrohres: # = 5,67 . 10-8W m-2 K-4 # = Absorptionsgrad 0,80 1/# = 1,25 A = Bestrahlungsfläche T1 = Aufheiztemperatur T2 = Umgebungstemperatur ang. 20°C Dimensionierung der Rohrleitung: Rohrleitungslänge L = 300 m Durchflußmenge Q = 150 l/h s 300 v = = = 0,08 m/s t 60 . 60 Aerf = Q/v = = 0,052 dm² = 5,2 cm² 0,8 gewählt d = 26 mm, D = 30 mm Wärmeenergieaufnahme: entspricht dem Wärmeübergang fließendes Wasser an glatten Flächen Q =α. A . t .#t A = U . L = 8,17 cm . 30 000 cm = 245 100 cm² = 24,51 m² Q = 800 . 24,51 . 1 . 77 = 1 510 ooo Kcal/h α= Wärmeübergangszahl A = Fläche t = Zeit lh T = Temperaturdifferenz 370°K - 293°K = 77°C Berechnung zum beschriebenen Beispiel Wärme energieverluste: 1. Verlust durch Wärmeausgleich c1 . m1 . t1 + c2 . m2 . t2 = tm ( c1 . m1 + c2 . m2 ) c1 . m1 . t1 + c2 . m2 . t2 tm = c1Wasser = 1 c1 . m1 + c2 . m2 c2Kunstst. = 0,5 1.0,53.283 + 0,5.0,18.370 # Kunstst. = 1,0 tm = = 296°K 1.0,53 + 0,5.0,18 t1 = 283°K 296 - 273 #tm = = 0,43 t2 = 370°K 283 + 370 -273 Ad = 5,30 cm² 2 AD = 7,07 cm² AK = 1,77 cm 2. Verlust durch einseitige Sonnenbestrahlung: 3. Verlust durch Wärmaleitung: d Luft = 4,8 + 3,4 . 5 = 22 #Kunstst. = 0,2 . 1 ooo = 40 5 100 #Luft = 0,02 . = 1 2 αLuft = = 5 1 000 # Kunstst. = 0,2 . =100 2 K = 168 Berechnung zum beschriebenen Beispiel K1 168 #Tw =#T . = 77 . = 16,2°C 800 Kü 800 - 168 #w = = 0,79 Verlust durch Aufheizung: Mögliche Wärmeeindringung Q = b . A . d . T b = Wärmeeindringzahl A = Fläche Q = 8 . 1 . . 77 = 308 000 Kcal/h 0,002 d = Stoffdichte #T = Temperaturdifferenz Aifheizzeit Sonnenscheinannahme loo Tage je 6 Std. ; mittlere Zeit = 3 Std. Calculation for the example described Assumed radiation energy (according to Prof. Schöll) 800 - 900 W / m² heating of the absorption pipe: # = 5.67. 10-8W m-2 K-4 # = degree of absorption 0.80 1 / # = 1.25 A = irradiation area T1 = heating temperature T2 = ambient temperature ang. 20 ° C Dimensioning of the pipeline: pipeline length L = 300 m flow rate Q = 150 l / hs 300 v = = = 0.08 m / st 60. 60 Aerf = Q / v = = 0.052 dm² = 5.2 cm² 0.8 selected d = 26 mm, D = 30 mm Heat energy absorption: corresponds to the heat transfer of flowing water on smooth surfaces Q = α. A. t. # t A = U. L = 8.17 cm. 30,000 cm = 245 100 cm² = 24.51 m² Q = 800. 24.51. 1 . 77 = 1 510,000 Kcal / h α = heat transfer coefficient A = area t = time lh T = temperature difference 370 ° K - 293 ° K = 77 ° C Calculation of the example described heat energy losses: 1. Loss through heat compensation c1. m1. t1 + c2. m2. t2 = tm (c1. m1 + c2. m2) c1. m1. t1 + c2. m2. t2 tm = c1water = 1 c1. m1 + c2. m2 c2 art. = 0.5 1.0.53.283 + 0.5.0.18.370 # plastic = 1.0 tm = = 296 ° K 1.0.53 + 0.5.0.18 t1 = 283 ° K 296 - 273 #tm = = 0.43 t2 = 370 ° K 283 + 370 -273 Ad = 5.30 cm² 2 AD = 7.07 cm² AK = 1.77 cm 2. Loss due to one-sided solar radiation: 3. Loss through thermal conduction: d air = 4.8 + 3.4. 5 = 22 #Artst. = 0.2. 1 ooo = 40 5 100 #Air = 0.02. = 1 2 αair = = 5 1,000 # Plastic = 0.2. = 100 2 K = 168 Calculation for the example described K1 168 #Tw = # T. = 77. = 16.2 ° C 800 Kü 800 - 168 #w = = 0.79 Loss due to heating: possible heat penetration Q = b. A. d. T b = heat penetration number A = area Q = 8. 1 . . 77 = 308,000 Kcal / h 0.002 d = stock density #T = temperature difference after heating time Sunshine assumption loo days each 6 hours; mean time = 3 hours

Gesamtwirkungsgrad #ges = 0,43 . 0,32 . 0,79 . 0,35 = 0,038 Tatsächliche Wärmeleistung: Q = #ges es . Q = = o,o38 . 1 510 ooo = 57 400 Kcal/h 57 400 Qm²netto = Q/A = = 2 340 Kcal/m²h 57 400 Qm²brutto = Q/A = = 730 Kcal/m²h A 5.5.3,14 Tatsächliche Leistung pro Jahr: Q = 57 400 . 600 = 34 440 ooo Kcal 34 440 000 Öleinsparung = = 6000 1 11 600 . 0,5 Ersparte Kosten 6 ooo . 0,40 = 2 400.- DM Durch Verbesserung der Materialkonstanten kann noch mehr Wirtschaftlichkeit erreicht werden.Total efficiency #total = 0.43. 0.32. 0.79. 0.35 = 0.038 actual Heat output: Q = #total. Q = = o, o38. 1,510,000 = 57,400 Kcal / h 57,400 square meters net = Q / A = = 2 340 Kcal / m²h 57 400 Qm²gross = Q / A = = 730 Kcal / m²h A 5.5.3,14 Actual Performance per year: Q = 57 400. 600 = 34 440,000 Kcal 34 440,000 oil savings = = 6000 1 11 600. 0.5 Costs saved 6,000. 0.40 = 2,400 DM through improvement the material constants, even more economic efficiency can be achieved.

Claims (1)

Patentanspr#ch#: Der Patentanspruch soll sich auf folgendes erstrecken: Sonnenkollektor aus einem doppelten, beliebig langem, Kunststoffrohr mit Direktanschluß an die Trinhvasserversorgung.Patent claim: The patent claim should extend to the following: Solar collector made from a double plastic pipe of any length with a direct connection to the Trinhvasserversorgung.
DE19752554095 1975-12-02 1975-12-02 Solar collector with double plastic pipe - with direct connection to drinking water supply Pending DE2554095A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752554095 DE2554095A1 (en) 1975-12-02 1975-12-02 Solar collector with double plastic pipe - with direct connection to drinking water supply

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Application Number Priority Date Filing Date Title
DE19752554095 DE2554095A1 (en) 1975-12-02 1975-12-02 Solar collector with double plastic pipe - with direct connection to drinking water supply

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DE2554095A1 true DE2554095A1 (en) 1977-06-16

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004060A1 (en) * 1978-03-07 1979-09-19 Hans Rodler Solar collector
EP0005665A1 (en) * 1978-05-18 1979-11-28 Tibor Arvai Tubular solar energy absorber
FR2512936A1 (en) * 1981-08-10 1983-03-18 Michel Jacques Roof-mounted solar heat collector - has flexible water tube located within much larger transparent flexible outer tube
FR2588070A1 (en) * 1985-09-27 1987-04-03 Ruffier Michel Double-casing flexible heat exchanger
FR2922633A1 (en) * 2007-10-23 2009-04-24 Sotep Soc Tech Extrusion Plast Tubular type solar collector for e.g. pre-heating water in swimming pool, has black color central tube for transporting fluid, and transparent external wall maintained at distance from tube by radial walls, where collector is flexible
DE102009056102A1 (en) * 2009-11-30 2011-06-01 Polyvanced Gmbh Thermal solar collector for use as water heater or liquid storage, has solar energy absorber with spiral shaped wound absorber pipe
CN108479093A (en) * 2018-03-29 2018-09-04 陈晖� Intelligent evaporator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004060A1 (en) * 1978-03-07 1979-09-19 Hans Rodler Solar collector
EP0005665A1 (en) * 1978-05-18 1979-11-28 Tibor Arvai Tubular solar energy absorber
FR2512936A1 (en) * 1981-08-10 1983-03-18 Michel Jacques Roof-mounted solar heat collector - has flexible water tube located within much larger transparent flexible outer tube
FR2588070A1 (en) * 1985-09-27 1987-04-03 Ruffier Michel Double-casing flexible heat exchanger
FR2922633A1 (en) * 2007-10-23 2009-04-24 Sotep Soc Tech Extrusion Plast Tubular type solar collector for e.g. pre-heating water in swimming pool, has black color central tube for transporting fluid, and transparent external wall maintained at distance from tube by radial walls, where collector is flexible
DE102009056102A1 (en) * 2009-11-30 2011-06-01 Polyvanced Gmbh Thermal solar collector for use as water heater or liquid storage, has solar energy absorber with spiral shaped wound absorber pipe
CN108479093A (en) * 2018-03-29 2018-09-04 陈晖� Intelligent evaporator

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