DE2756721A1 - Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency - Google Patents

Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency

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Publication number
DE2756721A1
DE2756721A1 DE19772756721 DE2756721A DE2756721A1 DE 2756721 A1 DE2756721 A1 DE 2756721A1 DE 19772756721 DE19772756721 DE 19772756721 DE 2756721 A DE2756721 A DE 2756721A DE 2756721 A1 DE2756721 A1 DE 2756721A1
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Germany
Prior art keywords
solar energy
boiler
heating
energy center
center according
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Withdrawn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
DE19772756721
Other languages
German (de)
Inventor
Valentin Rosel
Otto Schuster
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to DE19772756721 priority Critical patent/DE2756721A1/en
Publication of DE2756721A1 publication Critical patent/DE2756721A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0221—Central heating systems using heat accumulated in storage masses using heat pumps water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1042—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1045—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump and solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • 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
    • 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
    • Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating

Abstract

The Parent Patent described a solar heat recovery system which includes a storage tank with a boiler insert. The heat loss of the boiler insert is now directly added to the storage medium. In the bottom part of the storage tank, the medium, which is preheated by solar heat, is directed by baffle plates directly into close contact with the boiler insert. It is then allowed to rise in the upper part for secondary heating. Ths utilizes the solar heat energy to the best advantage.

Description

Beschreibungdescription

Dieses Zusatzpatent stellt eine Optimierung der Solar-Energie-Zentrale dar. Durch die weiteren Zueateansprüche ist es möglich, ein ausbaufähiges Solar-Speicher-System für die optimale Nutzung der Solar-Energie zusammen zu stellen.This additional patent represents an optimization of the solar energy center The additional additional claims make it possible to create an expandable solar storage system to put together for the optimal use of solar energy.

Erläuterung zum Anspruch 2 Die Solar-Energie-Zentrale wird mit einem Leitsystem (16) ausgerüstet, das den unteren Teil des Kesseleinsatzes (2) umschließt. Durch dieses Leit-System (16) wird das durch Solarenergie vorgeheizte Medium direkt an den Kesselwandungen vorbeigeleitet und aufgeheizt. Hierdurch ist eine schnelle Aufheizung des Speicher-Nachheizteiles (lb) gegeben. Der erhöhte Zirkulationsfluß um den Kesseleinsatz (2) bewirkt, daß die Wärmeabgabe des Kessels durch das Medium sofort in den Speicher-Naohheisteil (lb) transportiert wird und somit das Speicher-Vorwärmteil (la) mit seinem gesamten Volumen der Aufnahme von Solarenergie immer zur Verfügung steht.Explanation of claim 2 The solar energy center is with a Control system (16) equipped which encloses the lower part of the boiler insert (2). The medium, which has been preheated by solar energy, is transferred directly through this control system (16) bypassed the boiler walls and heated up. This is a quick one Heating of the storage post-heating part (lb) given. The increased circulation flow around the boiler insert (2) causes the boiler to dissipate heat through the medium is immediately transported into the storage near-heating part (lb) and thus the storage preheating part (la) with its entire volume of absorption of solar energy always available stands.

Erläuterung zum Anspruch 4 Die Solar-Energie-Zentrale ist mit einem oberen Nachheizmantel (13a) und einem unteren Vorheizmantel (13b) ausgestattet. Diese Anordnung ermöglicht je nach Bedarf verschiedene Schaltarten.Explanation of claim 4 The solar energy center is with a upper post-heating jacket (13a) and a lower preheating jacket (13b). This arrangement enables different types of switching as required.

1. Zur schnellen Aufheizung des Mediums im oberen Nachheizteil (1b) wird der obere Doppelmantel (13a) an den Heizungavorlauf und -rücklauf angeschlossen. (Siehe Blatt 10 Bild II) 2. Zur wirtschaftlichen Ausnützung der Solarenergie wird der Vorheizmantel (13b) und der Nachheizmantel (13a) über zwei Umwälzpumpen je nach vorhandenem Solar-Energieangebot angefahren.1. For rapid heating of the medium in the upper post-heating part (1b) the upper double jacket (13a) is connected to the heating flow and return. (See sheet 10 Fig. II) 2. For the economical use of solar energy the preheating jacket (13b) and the post-heating jacket (13a) via two circulating pumps depending on available solar energy.

(Siehe BlattlO Bild I) Erläuterung zum Anspruch 5 Die Solar-St euerung der Solar-Energi e-Zentrale erfolgt über eine handelaübliche Differenz-Temperatursteuerung (25), die durch einen Umschaltthermostaten (21) erweitert wird. (See BlattlO Fig. I) Explanation of claim 5 The solar control the solar energy center takes place via a commercially available differential temperature control (25), which is expanded by a changeover thermostat (21).

Steigt die Temperatur im Kollektorkreislauf über einen eingestellten Wert (ca. 500 C), so schaltet der Thermostat (21) automatisch auf die obere Speicher-Nachheizzone um.If the temperature in the collector circuit rises above a set Value (approx. 500 C), the thermostat (21) automatically switches to the upper storage tank reheating zone around.

(Siehe Blatt 12-) Erläuterung zum Anspruch 6 Die Steuerung des ol/Gas- Gebläsebrennern erfolgt über eine patentwürdige automatische Sommer- Winterschaltung.(See sheet 12-) Explanation of claim 6 The control of the oil / gas fan burner takes place via a patent-worthy automatic summer Winter switching.

Im Winterbetrieb wird der Brenner über den Kesseltemperaturregler (19a) geschaltet, der von Hand auf Normaltemperatur 700 - 800 C für Radiatorenheizung oder 500 C für Niedertemperatursysteme eingestellt wird. Schließt nun an warmen Tagen das Dreiwegeventil (17), so kühlt die Heizkreisvorlauftemperatur ab. Der Umschaltthermostat (18) im Heizkreievorlauf schaltet von Winter- auf Sommerbetrieb. Bei dieser Stellung wird der Brenner über den Speicherthermostaten (20) und dem Kesselthermostaten (19), (die durch den Umschaltthermostaten (18) frei gegeben werden) ein- und ausgeschaltet. Durch dieses Schaltungssystem sind im Sommerbetrieb die Brenner- Lauf- und Stillstandszeiten länger. Der Umsohaltthermostat (1d) schaltet gleichzeitig die Hei zungsumwälzpumpe (26) automatisch ein oder aus, sodaß sich diese bei Bedari selbstständig in Betrieb setzt.In winter operation, the burner is controlled by the boiler temperature controller (19a) switched by hand to normal temperature 700 - 800 C for radiator heating or 500 C is set for low temperature systems. Now closes on warm If the three-way valve (17) is activated, the heating circuit flow temperature cools down. The changeover thermostat (18) in the heating circuit flow switches from winter to summer mode. In this position the burner is switched on via the storage thermostat (20) and the boiler thermostat (19), (which are released by the changeover thermostat (18)) switched on and off. This switching system means that the burner running and downtimes are in summer operation longer. The circulating thermostat (1d) switches the heating circulation pump at the same time (26) automatically on or off, so that Bedari operates independently puts.

Bedienungskomfort, Strom- und Brennetoffersparnis und eine längere Puipenlebensdauer sind die Vorteile dieser patentwürdigen Steuerung. In den oft sehr wechselhaften Übergangezeiten iet die Ausnutzung der Sonnenenergie durch diese automatische Sonuner- Winterumechaltung optimal gelöst.Ease of use, electricity and fuel savings and a longer one Puipen life are the advantages of this patentable control. In the often The use of solar energy by these means that the transition times are very changeable automatic Sonuner winter changeover optimally solved.

Erläuterung zum Anspruch M Die Solar-Energie-Zentrale wird ohne Nachheizkesselteil ausgeführt. Dieser Zusatzspeicher (14), der mit einem oder zwei getrennten Doppelmänteln (13a und 13b)> ausgestattet wird, ermöglicht unter Zuhilfenahme von Zusatzbausteinen wie Wärmepumpe, Rohrleitungssysteme eine Vielzahl von Schaltungsmöglichkeiten.Explanation of claim M The solar energy center does not have an after-heating boiler part executed. This additional storage (14), with one or two separate double jackets (13a and 13b)> is made possible with the help of additional modules such as heat pumps, piping systems, a multitude of circuit options.

Eine von vielen Kombinationsmöglichkeiten ist im Blatt 11 dargestellt. Es handelt sich hierbei um eine aufgeflanschte Wärmepumpe (15) mit Doppelrohrverflüssiger und Verdampfer.One of the many possible combinations is shown on sheet 11. This is a flange-mounted heat pump (15) with a double pipe condenser and evaporator.

Mittels einer Wärmepumpe wird über dem im Zusatzspeicher (14) eingebauten Verdampfer die gespeicherte Wärme entzogen über den Kompressor und Doppelrohrverflüssiger in das Heizungssystem eingespeist.A heat pump is installed in the additional storage tank (14) Evaporator the stored heat is extracted via the compressor and double tube condenser fed into the heating system.

In den Sommermonaten wird die nicht verwertbare Solarenergie über ein an dem Zusatzspeicher (14) angeschlossens Rohrsystem (27) einem Großspeicher (Erd- oder Flüssigkeitsspeicher) zugeführt. Diese Energie steht dann während der Wintermonate für Heizungszwecke zur Verfügung.In the summer months the non-usable solar energy is over a pipe system (27) connected to the additional storage unit (14), a large storage unit (Underground or liquid storage) supplied. This energy is then available during the Winter months available for heating purposes.

Vorteile gegenüber bisher bekannten Systemen Die patentwürdige Solar-Energie-Zentrale ermöglicht mit ihren Zusatzpatentanmeldungen eine preisgünstige Ausnützung der Sonnenenergie für Heizungs- und Brauchwassererwärmung.Advantages compared to previously known systems The patented solar energy center With its additional patent applications, it enables inexpensive use of solar energy for heating and domestic water heating.

Durch ihre Konstruktion, vielseitige Anwendung, sinnvolle Kombinations- und Compaktbauweise, ist sie in der Lage, den Energiebedarf eines Gebäudes um ca. 30 bis 50 fi zu reduzieren.Due to their construction, versatile application, meaningful combination and compact design, it is able to reduce the energy requirements of a building by approx. 30 to 50 fi reduce.

Claims (1)

Zusatzpatentanmeldung zur PA Az.: P 27 42 845.1 Solar-Energie-Zentrale Patentansprüche Die unter dem Az P 27 42 845.1 angemeldeten Patentansprüche werden um folgende Patentansprüche erweitert.Additional patent application for the PA Az .: P 27 42 845.1 Solar energy center Patent claims The patent claims filed under Az P 27 42 845.1 become extended by the following claims. Anspruch Qi Solar-Energie-Zentrale dadurch gekennzeichnet, daß der Wärmeverlust des Kesseleinsatzes (2) direkt dem Speichermedium zugeführt wird.Claim Qi solar energy center characterized in that the Heat loss from the boiler insert (2) is fed directly to the storage medium. Anspruch 2 Solar-ergie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß im unteren Speichervorwärmteil (ja), das durch Sonnenenergie vorgewärmte Medium durch Leitbleche (16) an den Kesseleinsatz (2) gelenkt, nachgeheizt und durch den dabei entstehenden Auftrieb in den oberen Speichernachheizteil (lb) aufsteigt.Claim 2 solar energy center according to one or more claims characterized in that in the lower storage preheating part (yes) that is generated by solar energy The preheated medium is directed to the boiler insert (2) through guide plates (16), then reheated and through the resulting buoyancy in the upper storage post-heating part (lb) ascends. Anspruch 3 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß statt des Kesseleinsatzes (2) in der gleichen Höhe ein Wärmetauscher (27) für Fremdenergieübertragung, wie Fernheizwärme, Dampf, Heißwasser, Wärmepumpen oder Elektroenergie eingebaut ist.Claim 3 solar energy center according to one or more claims characterized in that instead of the boiler insert (2) at the same height Heat exchanger (27) for transferring external energy, such as district heating, steam, hot water, Heat pumps or electrical energy is installed. Anspruch 4 Solar-Energie-Zentrale nach einem oder mehreren Ansprechen dadurch gekennzeichnet, daß der Heizmantel in einem oberen Nachheizmantel (13a) und einem unteren Vorheizmantel (13b) unterteilt ist und je nach Schaltungsart getrennt an den Solar- oder Kesseikreis angeschlossen werden kann. Hierdurch ist es möglich, daß die Sonnenenergie bei hohen Temperaturen zu erst die obere Nachheizzone erhitzt und erst wenn diese aufgeheizt ist, den Vorheizteil erwärmt.Claim 4 solar energy center after one or more response characterized in that the heating jacket is in an upper post-heating jacket (13a) and a lower preheating jacket (13b) is divided and separated depending on the type of circuit can be connected to the solar or boiler circuit. This makes it possible that the solar energy first heats the upper post-heating zone at high temperatures and only when this is heated up, the preheating part is heated. Anspruch 5 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß durch den Einbau eines Umschaltthermostaten (21) bei einer eingestellten Kollektorkreislauftemperatur (ca 500 C) automatisch auf den oberen Nachheizmantel (13a) und bei niederen Temperaturen auf den unteren Vorheizmantel (13b) umgeschaltet wird. (Siehe Schaltbild Blatt 12 ) Anspruch 6 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß über einen hinter dem Heizungsmischventil eingebauten Umschalttheriostaten (18) und über einen zweiten Kesselthermostaten (19) und dem Speicherthermostaten (20) eine automatische Sommer- Winterumscha}-tung mit gleichzeitiger längerer Brennerlauf- und Stillstandszeit und dadurch ein wirtschaftlicher Betrieb im Sommer erreicht wird. (Siehe Schaltbild Blatt 12 ) Anspruch 7 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß im Kesselteil ein Wärmetauscher (26) für Schwimmbad- oder Warmwassernacherwärmung eingebaut ist.Claim 5 solar energy center according to one or more claims characterized in that by installing a changeover thermostat (21) a set collector circuit temperature (approx. 500 C) automatically to the upper post-heating jacket (13a) and at lower temperatures on the lower preheating jacket (13b) is switched. (See circuit diagram on sheet 12) Claim 6 Solar energy center according to one or more claims, characterized in that that via a switching thermostat (18) installed behind the heating mixing valve and via a second boiler thermostat (19) and the storage thermostat (20) an automatic summer-winter changeover with simultaneous longer burner running and downtime and thus an economical operation in summer is achieved will. (See circuit diagram sheet 12) Claim 7 solar energy center according to one or several claims, characterized in that a heat exchanger in the boiler part (26) is installed for swimming pool or hot water reheating. Anspruch ti Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß die Wärseübertragung vom Kesseleinsatz (2) zum Speicherinhalt oder in umgekehrter Richtung, vom Speicher zum Kesseleinsatz erfolgt und dadurch die flbertragung von Solarenergie auf das Heizsystem gegeben ist.Claim ti solar energy center according to one or more claims characterized in that the heat transfer from the boiler insert (2) to the storage contents or in the opposite direction, from the storage tank to the boiler insert and thereby the transfer of solar energy to the heating system is given. Anspruch 9 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß auf dieser eine Wärmepumpe (15), bestehend aus Verdampfer und Doppelrohrverflüssiger, eowie Kompressor auf- bzw. eingebaut ist.Claim 9 solar energy center according to one or more claims characterized in that on this a heat pump (15) consisting of an evaporator and double pipe condenser, as well as the compressor is built in or built in. Anspruch 10 Solar-Energie-Zentrale nach einem oder mehreren Ansprüchen dadurch gekennzeichnet, daß diese über ein Rohrsystem mit einem Erdkollektor (27) oder mit einem Latentspeicher verbunden ist.Claim 10 solar energy center according to one or more claims characterized in that it is connected to a ground collector (27) via a pipe system or connected to a latent storage system.
DE19772756721 1977-12-20 1977-12-20 Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency Withdrawn DE2756721A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772756721 DE2756721A1 (en) 1977-12-20 1977-12-20 Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency

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Application Number Priority Date Filing Date Title
DE19772756721 DE2756721A1 (en) 1977-12-20 1977-12-20 Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency

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DE2756721A1 true DE2756721A1 (en) 1979-06-21

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DE19772756721 Withdrawn DE2756721A1 (en) 1977-12-20 1977-12-20 Solar heat collector system - with baffle plates around boiler insert for optimum heat efficiency

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076391A2 (en) * 1981-10-03 1983-04-13 AL-KO POLAR Maschinenfabrik GmbH Device for heat production
US6682350B2 (en) 2001-06-02 2004-01-27 Hermann Kehl Laser pistol and method or system for retrofitting sharpshooting pistols

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076391A2 (en) * 1981-10-03 1983-04-13 AL-KO POLAR Maschinenfabrik GmbH Device for heat production
EP0076391A3 (en) * 1981-10-03 1983-09-28 Al-Ko Polar Maschinenfabrik Gmbh Device for heat production
US6682350B2 (en) 2001-06-02 2004-01-27 Hermann Kehl Laser pistol and method or system for retrofitting sharpshooting pistols

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