WO2008144781A2 - Chauffage d'eau solaire - Google Patents

Chauffage d'eau solaire Download PDF

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Publication number
WO2008144781A2
WO2008144781A2 PCT/ZA2008/000030 ZA2008000030W WO2008144781A2 WO 2008144781 A2 WO2008144781 A2 WO 2008144781A2 ZA 2008000030 W ZA2008000030 W ZA 2008000030W WO 2008144781 A2 WO2008144781 A2 WO 2008144781A2
Authority
WO
WIPO (PCT)
Prior art keywords
port
geyser
collector
battery
port adapter
Prior art date
Application number
PCT/ZA2008/000030
Other languages
English (en)
Other versions
WO2008144781A3 (fr
Inventor
Mario Sebastian Wlotzka
Ian Michael Dougal Campbell
Original Assignee
Mario Sebastian Wlotzka
Ian Michael Dougal Campbell
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 Mario Sebastian Wlotzka, Ian Michael Dougal Campbell filed Critical Mario Sebastian Wlotzka
Publication of WO2008144781A2 publication Critical patent/WO2008144781A2/fr
Publication of WO2008144781A3 publication Critical patent/WO2008144781A3/fr

Links

Classifications

    • 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0015—Domestic hot-water supply systems using solar energy
    • F24D17/0021—Domestic hot-water supply systems using solar energy with accumulation of the heated water
    • 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
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1057—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses 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
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • F24H9/136—Arrangement of inlet valves used therewith
    • 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
    • F24H9/00—Details
    • F24H9/40—Arrangements for preventing corrosion
    • F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
    • 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
    • F24H9/00—Details
    • F24H9/40—Arrangements for preventing corrosion
    • F24H9/45—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means
    • F24H9/455—Arrangements for preventing corrosion for preventing galvanic corrosion, e.g. cathodic or electrolytic means for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • 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
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • 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
    • 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

Definitions

  • This patent covers a new solar water heating system.
  • the system is primarily designed for fast and simple installation.
  • the system is also designed for:
  • the system described herein is a direct water heating, forced circulation type system. It has a circulation pump controlled by an electronic controller, which circulates water from the geyser, through the collector, and back to the geyser.
  • the collector consists of pipes in a grid formation, sealed in a box, with one glass face. Black coloured collector fins collect radiant sunlight and transfer it as heat to the pipes.
  • the collector can be damaged if water freezes and expands in its internal pipes. Freeze protection consists of using the pump to circulate hot geyser water through the collector, heating up the collector pipes.
  • the entire system is not electrically connected to the household/building mains power system, and is therefore not affected by mains power surges, power failures, etc. It operates using a 12V DC circulation pump and a photovoltaic collector to supply electrical power.
  • a 12V DC controller controls the pump to ensure circulation only when required.
  • the controller also controls the charging of a 12V battery, for use when circulation is required when there is no sunshine, for example during freezing conditions.
  • the system has been designed to have very few pipe connections, such that the chances of leaking are minimized.
  • the system incorporates 3 parts:
  • MPA Multi-Port Adaptor
  • the multi-port adaptor is a 5 port valve which fits to an existing geyser. It is made of corrosion resistant materials only, such as brass, stainless steel and polymers (plastics). It fits into either the hot water outlet pipe or the TPR valve port. It has a thin pipe which is inserted into the port hole allowing cold water to be drawn up that pipe and circulated through the SEC, and at the same time allowing returning warmed water from the SEC to enter the geyser through the same port ( Figures 1 and 2). This pipe may incorporate a flexible joint to allow ease of fitting in confined areas, or in unusual geyser installations, such as where the outlet port is on the side of the geyser. Hot water to the taps in the bathroom or kitchen is drawn from the same port, from the top of the geyser.
  • an anode is incorporated into the MPA. This would be necessary for galvanic corrosion protection if any galvanized steel parts are used. It would also help to protect the geyser, which is often made from galvanized steel.
  • the MPA body is machined from a solid block of material, preferably plastic such as Nylon, since plastic has good thermal insulation and anti-corrosion properties.
  • plastic has a high coefficient of thermal expansion compared to metals. This can introduce problems relating to well-sealed connections and thermal cycling, since a metal connector will not expand as much as a plastic connector joined to it, potentially loosening the tightness of the joint under elevated temperatures.
  • This problem is solved by using off-the-shelf, approved (by SANS) plastic connector fittings between the Nylon MPA block and the metal fittings, such that the plastic fitting is always the male part in the female metal connector. This ensures that the thermal expansion of the plastic fitting is similar to the adjoining Nylon block, maintaining joint tightness under all temperatures. Under elevated temperatures, the plastic fitting will tighten inside the metal fitting, ensuring that this joint also does not loosen and the seal is maintained.
  • the MPA specifically connects to a port on top of the geyser, such that the geyser does not need to be drained during fitment. Also, by not using the inlet geyser port as is commonly done, it avoids having to accommodate the stopcock which is normally fitted there. Also, experience has shown that many new geysers have unusual inlet port configurations, with filters or other obstructions in the port hole. These make it difficult to design a universal 5-way valve that will fit all configurations, making the system more complicated.
  • the MPA has a backup battery (typically lead-acid) and a complete controller unit incorporated.
  • This controller is custom designed for the system. It is an electronic device in a box, consisting of electronic components on a printed circuit board. It has connections to the temperature sensors on the MPA and the SEC. It has a programmable chip for controlling when the circulation pump turns on and off, according to the temperature readings, as well as to set off an alarm if anything goes wrong, such as the sensors or cables to the sensors becoming faulty, or the battery becoming flat. It incorporates a battery charger designed to extend battery life. It has a freeze protection feature which circulates hot water from the geyser through the SEC during freezing conditions, heating up the SEC and preventing freezing of water in the SEC piping.
  • the controller also extends battery life by controlling the cycling characteristics of the battery. This occurs by allowing the pump to only draw power from the PV panel, not the battery, during the day. It then connects the battery to the pump in freezing temperatures, which are often at night when there is no sunshine and hence no PV power.
  • the controller also has a maximum water temperature setting. It will not circulate the pump if the geyser water exceeds this value.
  • controller features include:
  • a battery temperature sensor to optimize battery charging An air lock sensing function - If the differential temperature between the collector and the geyser temperature gets excessively high, an air lock (no flow) is indicated.
  • a pressure loss or pump running dry sensing function If the current to the pump increases markedly above the usual a pressure loss is indicated. In this case, the controller turns the pump off and waits a predetermined time (typically 2 hours) before retrying the pump.
  • Radio frequency remote wireless receiver connection The controller can be programmed remotely and wirelessly using a personal computer connected to a transmitter.
  • Memory A predetermined amount of all variable measured are stored on the controller memory. This memory can then be read using the wireless link for purposes of fault finding or system optimization.
  • the controller incorporates a buzzer which emits various sequences of noise (beeps) to indicate various faults. For example, it can be programmed to beep one short beep every hour to indicate that there is a pressure loss, or beep two short and one long beeps every hour to indicate an excessively warm battery.
  • beeps various sequences of noise
  • the controller has a battery monitor which can indicate if the battery is flat
  • the controller does not need the battery to operate - When it receives power from the photovoltaic panel in the morning, it powers up and initializes itself, then runs its program for pump control and system monitoring. This allows the system to be installed with or without the battery, for example, in areas where freezing never occurs, or for example, if the emergency anti-freeze protection device (EAFD) is installed. This could be done in areas where freezing only occurs very rarely.
  • EAFD emergency anti-freeze protection device
  • the MPA incorporates a temperature sensor somewhere along the channel where the water drawn from the geyser flows through it. This may be, for example, in the nylon body, or in a fitting attached to the body. However, an alternative configuration that can be used to achieve a specific objective is to incorporate the sensor into the pipe which inserts into the geyser interior. Such a configuration is shown in Figure 3.
  • the MPA need not necessarily have the controller, battery or temperature sensors, in which case the PV panel is electrically connected directly to the pump. This version of the system described will then be suitable for areas where freeze protection is not necessary.
  • the circulation pump will only operate when the PV panels provides sufficient electrical power, ie when the sun is shining.
  • the MPA may or may not include an emergency anti-freeze protection device (EAFD).
  • EAFD emergency anti-freeze protection device
  • EAFD could also be used on any other direct-type solar water heating systems such as natural convection systems, negating the need to use freeze-resistant collectors.
  • the EAFD is a simple device designed for direct systems to circulate hot or warm water from the tank to the collector if there is both a power failure and freezing temperatures. It does not need a circulation pump, and is therefore suitable for both forced and natural convection circulation type systems. It operates using a DC battery.
  • the EAFD consists of a normally closed, automatic return, 12VDC operated solenoid valve connected via a T-piece to the pipe from the solar collector outlet to the tank inlet (figure 1).
  • a non-return valve may be required if the system is not already fitted with one.
  • This valve is controlled using a 220V AC NC coil relay and a 15 degrees C thermostat NC switch thermally attached to a pipe in or near the collector, or even unattached near the collector (figure 2).
  • the switch remains closed up to 15 deg C, and above that will open. On cooling, it closes when it reaches 3 to 5 deg C.
  • the relay is connected to and controlled by the 220 VAC power supply, and the contacts remain open until there is a power failure. In that case the contacts will close.
  • a 12 VDC battery is used in series with the relay contacts and the thermostat switch to operate (open) the solenoid valve.
  • the warm water from the tank is then released through the valve, effectively heating the collector.
  • the thermostat switches open and the valve closes.
  • the valve also closes if the power turns on and operates the relay coil, opening the relay switch.
  • the relay coil could be different, for example, it may also be operated from a battery of another size, such as a 6V DC battery.
  • the mechanical thermostat described is a commonly available version, :but others could be used, such as one with an operating temperature of 3 degrees C on a temperature drop, and a resetting temperature above 3 degrees C. As long as the solenoid valve operating coil, the relay contacts, the battery and the thermostat are connected in series, the actual order of these components in the circuit is unimportant.
  • geyser outlet port for fitment (or, alternatively, the TPR port) instead of the inlet port. This allows the valve to be fitted without draining the geyser. It also avoids other problems associated with being adaptable to many different geyser types (eg filters or unusual configurations of the geyser inlet port), and problems associated with geyser inlet piping configurations such as stopcock valves.
  • plastic block alternatively stainless steel, or brass, in order of preference
  • one piece body for the MPA improves thermal insulation and allows easy manufacture.
  • Plastic is preferable since it has good thermal insulation properties.
  • the type of plastic to be used in practice is typically Nylon. However, matching the plastic type to the fitting type will allow welding of fittings which will improve join reliability.
  • the controller only draws power from the PV panel and not the battery during the day when the sun is shining, in order to drive the circulation pump. It effectively allows charging of the battery only during sunshine. However, during freezing conditions, typically at night, it connects the battery for the purpose of supplying power to the pump to allow freeze protection circulation.
  • the pipe which inserts into the geyser has a flexible joint. This is typically done by, for example, using a stainless steel pipe, cutting it and joining it with a flexibly silicon pipe over it (Figure 2). This allows ease of fitment of the MPA to the geyser in confined spaces. It also allows the MPA to be fitted to a port on the side of the geyser, because the pipe will then automatically hang down towards the bottom of the geyser. This could occur, for example, if the plumber has installed a horizontal geyser in a vertical position.
  • the SEC ( Figure 4) is designed to collect radiant solar energy and convert it into heat energy, by heating up water in a pipe grid ( Figure 5).
  • the pipe grid is housed in a flat, thin but wide and long, thermally insulated box, one large face of which is a strengthened glass sheet to allow sunlight in. Radiant solar energy is absorbed by black-coloured aluminium or copper sheet fins. These act to absorb solar energy and transfer it to the pipes in the grid, which in turn heat the water.
  • Both the inlet and outlet water pipes are next to each other at the top of the collector box. This allows easy installation. It also means that during installation there are only two pipe connections that need to be made to the SEC, reducing the chances of leakage when compared to other systems, which commonly have 4 pipe connection points (Figure 6). The disadvantage is that it is more difficult to connect two solar collectors together for larger systems. To overcome this, the collector is designed to be large enough in collector area for the commonly used large geysers in residential homes, such that only one collector is ever needed.
  • the pipe grid consists of risers, a down-pipe and two header pipes.
  • the down-pipe in the collector box connects the inlet pipe to the bottom header pipe, from where water will go up through the riser pipes to the top header pipe, then leave the collector through the outlet fitting.
  • the SEC incorporates an air purge valve and a photovoltaic (PV) panel ( Figure 4).
  • the PV panel is placed at the top of the collector box, such that after installation it hides the inlet and outlet pipe connections from being visible to observers, improving aesthetics.
  • the collector is designed specifically for forced circulation systems, and may not work as well or at all with natural convection systems, because of the down-pipe being included in the collector box. In a natural convection system, water will heat up in the down-pipe and will tend to cause reverse circulation, slowing or stopping the natural circulation required to cause the system to work properly. In the forced circulation system described here, the down-pipe acts in a similar heat collection manner to the riser pipes.
  • the inlet and outlet pipe fittings and the PV panel are situated such that, after installation, the PV Panel covers the pipes and fittings, offering sun protection (especially protecting the plastic water pipes from UV) and improving aesthetics.
  • the PV panel can also cover the point where the two water pipes go under a roof tile and into the ceiling area, improving aesthetics.
  • the collector is designed such that both water inlet and outlet points are next to each other at the top.
  • This configuration means that the pipe grid can "float" within the collector box, naturally allowing for thermal expansion movement. Restriction of this movement can cause cyclic stresses and reduce the life of the collector pipe grid, eventually causing leaks.
  • the fact that the inlet and outlet are close together also means that only one tile needs to be lifted to allow both pipes to the collector to be fed together into the ceiling area. Also, the pipes can now be of the same length, allowing standardization and ease of fitment.
  • the inlet and outlet pipe fittings can be swiveled 90 degrees, allowing ease of fitment for both tiled (where the inlet and outlet needs to be inline with the roof) and for sheet roofs, such as corrugated iron (where the inlet and outlet needs to face down towards the roof surface). This improves aesthetics and means more installation simplicity
  • FCH Flexible Connection Harness
  • the SEC and MPA are connected together by means of a FCH.
  • the FCH can be made to different lengths to accommodate different installation configurations. It consists of:
  • a sensor cable to transfer the temperature sensor signal on the SEC to the controller on the MPA.
  • a cable to transfer the electrical power absorbed from the PV panel to the controller, battery and pump.
  • Figure is a schematic drawing
  • Figure 2 is a functional drawing
  • Figure 3 shows an alternative
  • Figure 4 shows a roof installation
  • Figure 5 shows a solar collector
  • Figure 6 shows a battery of collectors
  • Figure 7 show a multi-port valve
  • Figures 8, 9 and 10 show orthogonal views of the multi-port valve.
  • the system 1 of the invention includes connecting the multi- port adapter to the outlet port of an existing cistern 3.
  • the secret is the pipe 4 that is concentric with the outer pipe 5, the pipe 4 communicating from a colder water level 6 of the cistern with the pipe 7 that leads to the solar heat collector (not shown in these views) while the return pipe 8 from the solar collector communicates with the upper hot water level 9 of the cistern and also with the outlet pipe 10 for hot water to be supplied to consumers, e.g. a household.
  • Figure 2 shows optional protection anode 11 and a sensor pocket 12, the sensor 13 being indicated schematically in figure 1, as well as a pump 14 in the delivery pipe to the solar collector and a non-return valve 15 in the return pipe from the solar collector.
  • Figure 3 shows an alternative arrangement for the sensor 16 consisting of a tube 17 from which the sensor cable 18 emerges.
  • FIG. 4 shows a roof installation in which the solar collector panel 19 rests on the roofing, shown here as tiles or shingles 20, with a purge valve 21 and piping 22 leading to the multi port valve.
  • a panel 23 is provided to protect the pipes 22 from UV damage and doubles as a photo-voltaic panel to supply electrical power to the controller during periods of sunlight and/or recharge the battery.
  • Figure 5 shows the solar collector panel 19 with water passages 23A for incoming water at 24 and outgoing water at 25, located in a collection box 26.
  • Several panels may be interconnected as a battery of panels as shown in figure 6, to provide greater heating power.
  • Figure 7 shows the multi-purpose valve 2 with pipes 5, 7, 8 and 10, reference being made to the description of figures 1 and 2.
  • the pump 14 and non-return valve 15 are shown and sensor cable 13.
  • FIGs 8, 9 and 10 show the multi-port valve 2 with the pipe 4, threaded socket 27 for the pipe 5, threaded socket 28 for the pipe 7, threaded socket 29 for the pipe 8, and threaded socket 30 for the pipe 10.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Photovoltaic Devices (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention concerne un adaptateur multi-orifice pour un dispositif de chauffage d'eau solaire et un système de dispositif de chauffage d'eau solaire incorporant l'adaptateur. L'adaptateur multi-orifice peut être fixé sur l'orifice de sortie de réservoir de geyser existant au sommet du réservoir, simplifiant grandement l'adaptation et conduisant à plusieurs autres avantages.
PCT/ZA2008/000030 2007-05-23 2008-04-14 Chauffage d'eau solaire WO2008144781A2 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
ZA200704178 2007-05-23
ZA2007/04178 2007-05-23
ZA200707659 2007-09-06
ZA2007/07659 2007-09-06
ZA2007/09063 2007-10-19
ZA200709063 2007-10-19

Publications (2)

Publication Number Publication Date
WO2008144781A2 true WO2008144781A2 (fr) 2008-11-27
WO2008144781A3 WO2008144781A3 (fr) 2009-07-30

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Application Number Title Priority Date Filing Date
PCT/ZA2008/000030 WO2008144781A2 (fr) 2007-05-23 2008-04-14 Chauffage d'eau solaire

Country Status (1)

Country Link
WO (1) WO2008144781A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832283A (zh) * 2012-08-24 2012-12-19 浙江天煌科技实业有限公司 一种利用水循环调节光伏组件温度的组件结构
CN107747818A (zh) * 2017-11-14 2018-03-02 绵阳雅地圣格智能家居设计有限公司 一种远程控制的太阳能热水器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619118U1 (de) * 1995-10-30 1996-12-12 Vaillant Joh Gmbh & Co Schichtspeicher
WO2002081978A1 (fr) * 2001-03-26 2002-10-17 Braathen Thor F Dispositif pour reservoir d'eau chaude de type chauffage sous pression et raccord pour reservoir d'eau chaude de type chauffage sous pression
EP1637816A1 (fr) * 2004-09-16 2006-03-22 Robert Bosch GmbH Dispositif de raccordement pour ballon d'accumulation d'eau chaude
EP1840474A2 (fr) * 2006-03-29 2007-10-03 Fafco Incorporated Kit pour système de chauffage solaire de l'eau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29619118U1 (de) * 1995-10-30 1996-12-12 Vaillant Joh Gmbh & Co Schichtspeicher
WO2002081978A1 (fr) * 2001-03-26 2002-10-17 Braathen Thor F Dispositif pour reservoir d'eau chaude de type chauffage sous pression et raccord pour reservoir d'eau chaude de type chauffage sous pression
EP1637816A1 (fr) * 2004-09-16 2006-03-22 Robert Bosch GmbH Dispositif de raccordement pour ballon d'accumulation d'eau chaude
EP1840474A2 (fr) * 2006-03-29 2007-10-03 Fafco Incorporated Kit pour système de chauffage solaire de l'eau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102832283A (zh) * 2012-08-24 2012-12-19 浙江天煌科技实业有限公司 一种利用水循环调节光伏组件温度的组件结构
CN107747818A (zh) * 2017-11-14 2018-03-02 绵阳雅地圣格智能家居设计有限公司 一种远程控制的太阳能热水器

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