AU2010200738A1 - Solar hot water system - Google Patents
Solar hot water system Download PDFInfo
- Publication number
- AU2010200738A1 AU2010200738A1 AU2010200738A AU2010200738A AU2010200738A1 AU 2010200738 A1 AU2010200738 A1 AU 2010200738A1 AU 2010200738 A AU2010200738 A AU 2010200738A AU 2010200738 A AU2010200738 A AU 2010200738A AU 2010200738 A1 AU2010200738 A1 AU 2010200738A1
- Authority
- AU
- Australia
- Prior art keywords
- hot water
- solar
- water system
- storage tank
- tank
- 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.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 145
- 238000004804 winding Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000013517 stratification Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000000037 vitreous enamel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
- 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
- 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
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S90/00—Solar heat systems not otherwise provided for
- F24S90/10—Solar heat systems not otherwise provided for using thermosiphonic circulation
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (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)
Description
P/00/011 Regulation 3.2 AUSTRALIA Patents Act 1990 ORIGINAL COMPLETE SPECIFICATION STANDARD PATENT Invention Title: "SOLAR HOT WATER SYSTEM" The following statement is a full description of this invention, including the best method of performing it known to me/us: 1 SOLAR HOT WATER SYSTEM FIELD OF THE INVENTION The invention relates to solar hot water systems. In particular, the 5 invention relates to a solar hot water system that includes a heating coil located in a particular location in a hot water tank. BACKGROUND TO THE INVENTION Hot water systems are required in homes, offices and other locations 10 to heat water. Conventional hot water systems commonly burn gas or utilise electrical heating elements in order to heat water. However, such conventional hot water systems are relatively expensive because of the cost of the gas or electricity to the consumer. Solar hot water systems overcome many of the disadvantages of conventional hot water systems by utilising the 15 energy from the sun to heat water. Hence, solar hot water systems utilise a renewable energy source and reduce green house gas emissions. Solar hot water systems can also utilise energy from the sun to heat water at minimal cost. The above-mentioned conventional hot water systems generally 20 incorporate a hot water tank and a thermostat or controller which controls the water temperature in the hot water storage tank within a desired range, which is usually slightly below 75*C. It is important to keep the water around 75 0 C as this temperature is ideal for most requirements, and further heating would simply be a waste of energy. Also, the hot water storage tanks used in such 25 conventional hot water systems are commonly made of steel or copper with a lining of vitreous or glass enamel. A conventional solar powered hot water system includes: (i) a number of solar panels located on a roof or other elevated height to receive heat from the sun; 30 (ii) a hot water storage tank containing water connected to a domestic premises for use in providing a continuous supply of hot water to the domestic premises; 2 (iii) a heat exchange coil in the hot water tank which normally extends the full length of the tank, and which is also provided with a thermostatically controlled booster; (iv) a circuit for transporting water or other heat exchange fluid 5 from the solar panels to the heat exchanger coil inside the hot water storage tank for heating the water occupying the hot water tank; and an electronic controller for maintaining the water temperature leaving the solar panels at about 75 0 C. In some cases, the heat exchange coil may extend almost the full 10 length of the hot water tank as shown in US patent 4,201,264, or alternatively may end through a bottom half of the tank as shown in US Patent 4,287,879. However, a particular problem of such conventional solar hot water systems is that if the weather provides a number of days without sunshine the bottom of the tank may cool down to 20 0 C and the hot water storage tank 15 may then rely excessively on use of the thermostatically controlled booster for heating the water inside the storage tank. This means that operating costs for operation of the solar hot water system may be excessive and operating efficiency of the solar hot water system is reduced. Also, inappropriate use of boosters can defeat the purpose of having a solar hot 20 water system. Thus, if the booster is activated before sunrise when the temperature of the water inside the hot water tank falls then the water may be hot by the time the sun comes out therefore wasting the available solar energy. Usually the booster will be activated to increase the temperature of water inside the storage tank to about 60 0 C - 65 0 C. 25 It will also be appreciated that when use is made of a full length coil that if part of the coil is in the bottom cold layer operating efficiency of the solar hot water system may be reduced. This may also lead to a reduction in delivery of hot water to the domestic premises. Reference may also be made to US Patent 5,245,984 which 30 described a solar domestic hot water system with thermal siphon preheating which has a heat exchanger coil located in a top part of a non-pressurized storage tank which has an open top, and thus is only subject to atmospheric 3 pressure. This solar hot water system also includes multiple pumps and a thermal booster having two columns through one of which passes warm water from the output of a solar collector to pre-warm colder water coming from a solar storage tank which passes through the other of the columns to 5 an electric or gas domestic hot water heater. This reference being based on a thermal siphon preheating arrangement is extremely complicated and not related to the present invention which uses a single sealed hot water storage tank. 10 OBJECT THE INVENTION It is an object of the invention to produce a solar hot water system which alleviates the abovementioned disadvantage in relation to excessive use of the thermostatically controlled boosters. 15 SUMMARY OF THE INVENTION The invention therefore provides a solar hot water system which includes: (i) one or more solar collectors for exposure to the sun for extraction of solar energy; 20 (ii) a hot water storage tank sealed to atmosphere; (iii) a supply conduit interconnecting the solar collector(s) and the hot water storage tank for transfer of hot or heated transfer liquid from the solar collector(s) to the hot water storage tank; (iv) a return conduit interconnecting the hot water storage tank and 25 the solar collector(s) for return of relatively cold water to the solar collector(s); and (v) a heat exchange coil comprising coil windings, wherein all the coil windings are located in a top half of the hot water storage tank. 30 The solar hot water system of the invention may also include a pump in the return conduit for pumping the relatively cold water to the solar collectors which may be mounted on a roof or other structure having an 4 elevated height. There also may be included a differential temperature controller. The controller measures the temperature of the collector panels and compares this with the temperature of the tank water (normally measured at the bottom of the tank). The controller compares the 5 temperatures and when the collector temperature exceeds the tank temperature by 100 (approximately) it turns the pump on. When the temperature difference drops below 4* (approximately) the pump turns off. The pump is also shut off if the tank's temperature exceeds a maximum set point (e.g., 750). This allows the controller to sense when heat energy from 10 the sun is present and is significant enough to add to the current tank temperature and will proceed to heat the water until the maximum tank temperature is reached or the sun energy is reduced. Preferably, the heat exchange coil connects between the supply conduit and the return conduit. Alternatively, the heat exchange coil 15 connects to a domestic or industrial hot water system of a building. Ideally, the hot water storage tank includes a booster element to further heat water inside the hot water storage tank. The solar collector(s) may include one but more preferably a plurality of conventional flat plates, or use can be made of evacuated heat pipe 20 systems as an alternative type of solar collector. Usually flat plate panels can be used but it will also be appreciated that other types of solar heating units can be used such as vacuum tube collectors and concentrating collectors such as parabolic trough collectors. The hot water storage tank may be of any suitable type including a 25 tank outlet for hot water to be transferred to a domestic or industrial building and a cold water inlet for cold water to be transferred from the domestic or industrial building to the hot water storage tank. The nature of the invention refers to the use of a heat exchange coil that has a length that equates with a top part of the hot water storage tank 30 which has water in the tank at the highest temperature zone, e.g. from 60* 850 or even 65 - 75 0 C. Thus the heat exchange coil includes coil windings, and all the coil windings are located in a top half of the hot water storage 5 tank. This may be 20 - 35% of the tank measured from its top wall and more preferably may be 25 - 33%. The use of a coil much reduced in length compared to a conventional heat transfer coil which normally extends about the full length or height of the hot water storage tank takes advantage of the 5 stratification of water in a hot water tank wherein on rainy or overcast days, water may be separated into different strata or levels inside the tank, e.g., a top part being a relatively hot zone of 650 - 85*C, a bottom part of the tank having cold water at a temperature of 15* - 25*C and an intermediate zone between these top and bottom strata having a temperature range of 250 10 65 0 C. BRIEF DESCRIPTION OF THE DRAWINGS Reference may now be made to a preferred embodiment of the invention shown in the attached drawings wherein 15 FIG 1 is a view of a conventional solar hot water system; FIG 2 is a view of one embodiment part of a solar hot water system constructed in accordance with the invention; and FIG 3 is a view of another embodiment of a solar hot water system constructed in accordance with the invention. 20 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In FIG 1 there is shown a conventional hot water system 10 in accordance with the invention that includes hot water storage tank 11 and an assembly 13 of solar collector panels mounted on a roof of a building (not 25 shown). The hot water storage tank 11 has a hot water outlet 14 for supply to a domestic premises (not shown) as well as a cold water inlet 15 from the domestic premises (not shown). There is also provided an electrical booster element 16 and a continuous peripheral wall 17 of tank 11 that seals tank 11 from the atmosphere. Tank 11 also has a lining 18 of vitreous enamel, a 30 supply conduit 19 and a return conduit 20. There is also provided a heat exchange coil 21 extending substantially the length of hot water tank 11 and which has an inlet tube 22 and outlet tube 23. There is also shown filter 6 valve 24 and filter tube 25. There is also shown pump 26 and electrical controller or microcontroller 27 which compares temperatures T 1 at location A and T 2 at location B. The solar collector panel assembly 13 includes individual solar 5 collector panels 30 and 31 interconnected by brackets 32 and 33 and flow manifolds 34 and 35 connected to each of supply conduit 19 and return conduit 20 at inlet 37 and outlet 36. It will be noted in FIG 1 that coil 21 will normally consist of about 12 15 coils or turns and have a length of 27 - 33 feet. A problem with the 10 conventional arrangement shown in FIG 1 is that on a sunny day the temperature of water inside tank 11 may be controlled by controller 27 to have a maximum value of 750*. However, on a rainy or overcast day wherein there is substantially no solar input it is only the top part (e.g., 0.25 - 0.35 of tank measured from the 15 top) that is being heated. This means that it is necessary for the electrical booster element which is thermostatically controlled to heat the remainder of the tank. However, if there is a repeating pattern of cloudy days with minimal sunlight the tank 11 will end up having booster element 16 mainly controlling the temperature of the water inside tank 11. Thus, the bottom section of the 20 tank may cool down to 150 - 25 0 C and thus stratification may occur as discussed above. The liquid inside coil 21 may also have a similar temperature corresponding to the stratification layers. It should be appreciated that the booster 16 may alternatively be a gas booster or any other appropriate booster system. 25 Stratification in regard to solar powered hot water systems is undesirable in that it reduces the overall working efficiency of the hot water tank, and thus water when discharged from the hot water tank may not be at the desired temperature in some cases. To overcome this problem, it is now proposed to use a heat exchange 30 coil or coil 21A shown in FIG 2 which will have a much reduced length compared to length of coil 21 which corresponds substantially to the length of hot water storage tank. Thus in accordance with the invention, the length of 7 coil 21A may be approximately 50% of the length of the tank 11 and more preferably from 25 - 35% the length of tank 11. Furthermore, the coil 21A includes coil windings that are located wholly in a top half of the tank 11 or more preferably a top third of the tank 11 depending on the length of the coil 5 21A. Although FIGs 2 and 3 show that the coil 21A is horizontally oriented it should be appreciated that coil 21A may be mounted in any orientation as long as the coil 21A is located wholly in the top half of the tank 11. It is also highly desirable that coil 21A will have the same heat exchange qualities as coil 21 and to that end, coil 21A may have from 12 10 15 turns and thus, may correspond to a compressed version of coil 21. By providing coil 21A in FIG 2 which ideally is located in the top one third of the tank 11, then this means that even if stratification occurs as described above then about the top one-third of tank 11 will still contain hot water of around 75*C, and thus the hot water system 10A shown in FIG 2 will 15 operate more efficiently than hot water system 10 shown in FIG 1. In operation water is normally used as the heat exchange fluid which travels through coil 21A, although other heat exchange fluids could be utilized such as ethylene glycol or propylene glycol usually in admixture with water. A commonly used ratio is 50% water and 50% glycol or 60% water 20 and 40% glycol. The water as shown by the arrow in full outline will travel from outlet 36 through supply conduit 19 to inlet tube 23A of coil 21A and subsequently through coil 21A and out through outlet tube 22A and into return line 20 to inlet 37. By occupying a top part of tank 11 as shown, heat exchange fluid 25 will always be at an optimum temperature of around 75*C and inhibit heat loss from the hot water tank on overcast days whereby if a full length conventional coil is used the heat exchange fluid by passing through the cold bottom layer of water in the hot water tank will have its heat exchange ability impaired, and this will reduce the heating efficiency of the tank in providing 30 domestic hot water through outlet 14. Another embodiment of the invention is shown in FIG 3 where coil 21A instead of being connected to solar collector panel assembly 13 as 8 shown in FIG 2 may be connected to the domestic system. Thus, in this arrangement there is shown a tap or faucet 40 of the domestic system which is connected to outlet tube 22A of coil 21A and inlet tube 23A connected to mains supply 41. In FIG 3 there is also shown bypass conduit 42 between 5 supply conduit 19 and return conduit 20. There is also provided pump 29, check valve 43, tempering valve 44, inlet tube 47 and outlet tube 48. For the sake of convenience controller 27 has been deleted from FIG 3. It will be appreciated therefore that coil 21A may be connected to the domestic system as shown in FIG 3 or to the solar collector panel assembly 10 13 as shown in FIG 2. The advantages of use of a coil 21A, which is of a relatively short length that corresponds with the hot zone at the top of hot water tank 11 and is located wholly in a top half of the tank 11 means that more efficient use is made of the solar hot water system in delivery of hot water when required, 15 and that efficient use of thermal booster 16 is substantially decreased. The above description of various embodiments of the present invention is provided for purposes of description to one of ordinary skill in the related art. It is not intended to be exhaustive or to limit the invention to a single disclosed embodiment. As mentioned above, numerous alternatives 20 and variations to the present invention will be apparent to those skilled in the art of the above teaching. Accordingly, while some alternative embodiments have been discussed specifically, other embodiments will be apparent or relatively easily developed by those of ordinary skill in the art. Accordingly, this patent specification is intended to embrace all alternatives, modifications 25 and variations of the present invention that have been discussed herein, and other embodiments that fall within the spirit and scope of the above described invention. Limitations in any patent claims should be interpreted broadly based on the language used in the claims, and such limitations should not be 30 limited to specific examples described herein. In this specification, the terminology "present invention" is used as a reference to one or more aspects within the present disclosure. The terminology "present invention" 9 should not be improperly interpreted as an identification of critical elements, should not be improperly interpreted as applying to all aspects and embodiments, and should not be improperly interpreted as limiting the scope of any patent claims. 5
Claims (18)
1. A solar hot water system including: one or more solar collectors for exposure to the sun for extraction of solar energy; 5 a hot water storage tank sealed to atmosphere; a supply conduit interconnecting the solar collector(s) and the hot water storage tank for transfer of hot or heated transfer liquid from the solar collector(s) to the hot water storage tank; a return conduit interconnecting the hot water storage tank and 10 the solar collector(s) for return of relatively cold water to the solar collector(s); and a heat exchange coil comprising coil windings, wherein all the coil windings are located in a top half of the hot water storage tank. 15
2. The solar hot water system of claim 1 wherein the heat exchange coil has a length that equates to 50% or less of the length of the hot water storage tank.
3. The solar hot water system of claim 1 wherein the heat exchange coil 20 has a length that equates to 35% or less of the length of the hot water storage tank.
4. The solar hot water system of claim 1 wherein the heat exchange coil has a length that equates to 20% or less of the length of the hot water 25 storage tank.
5. The solar hot water system of claim 1 wherein the heat exchange coil is located wholly in a top one-third of the hot water storage tank. 30
6. The solar hot water system of claim 1 further including: a pump in the return conduit for pumping the relatively cold water to the solar collectors which may be mounted on a roof or other 11 structure having an elevated height.
7. The solar hot water system of claim 1 further including a differential temperature controller, wherein the controller measures the temperature of 5 the collector panels and compares this with the temperature of the tank water.
8. The solar hot water system of claim 8 wherein the controller turns the pump on when the temperature of the collector panels exceeds the 10 temperature of the tank by 100.
9. The solar hot water system of claim 8 wherein the controller turns the pump off when the temperature of the collector panels is within 40 of the temperature of the tank. 15
10. The solar hot water system of claim 8 wherein the controller turns the pump off if the temperature of the tank exceeds a maximum set point.
11. The solar hot water system of claim 10 wherein the maximum set 20 point is approximately 75*C.
12. The solar hot water system of claim 1 wherein the solar collector(s) include one or more conventional flat plates. 25
13. The solar hot water system of claim 1 wherein the solar collector(s) are made of evacuated heat pipe systems.
14. The solar hot water system of claim 1 wherein the solar collector(s) are flat plate panels. 30
15. The solar hot water system of claim 1 wherein the solar collector(s) are any one or a combination of vacuum tube collectors, concentrating 12 collectors or parabolic trough collectors.
16. The solar hot water system of claim 1 wherein the heat exchange coil connects between the supply conduit and the return conduit. 5
17. The solar hot water system of claim 1 wherein the heat exchange coil connects to a domestic or industrial hot water system of a building.
18. The solar hot water system of claim 1 further including a booster 10 element located in the hot water storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2010200738A AU2010200738A1 (en) | 2009-02-27 | 2010-02-26 | Solar hot water system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2009900878 | 2009-02-27 | ||
| AU2009900878A AU2009900878A0 (en) | 2009-02-27 | Solar hot water system | |
| AU2010200738A AU2010200738A1 (en) | 2009-02-27 | 2010-02-26 | Solar hot water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2010200738A1 true AU2010200738A1 (en) | 2010-09-16 |
Family
ID=42732340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2010200738A Abandoned AU2010200738A1 (en) | 2009-02-27 | 2010-02-26 | Solar hot water system |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2010200738A1 (en) |
| NZ (1) | NZ583609A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009418A1 (en) * | 2014-07-14 | 2016-01-21 | Keane Bernard Michael | A heating system and a method for controlling a heating system |
| ITUA20163639A1 (en) * | 2016-05-20 | 2017-11-20 | Brahma S P A | HYBRID HEATING SYSTEM |
| US11549693B2 (en) | 2017-07-17 | 2023-01-10 | Wise Earth Pty Ltd | Hot water tank |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780430B (en) * | 2020-07-10 | 2021-09-03 | 戴志刚 | Water adding system and method for solar water heater |
-
2010
- 2010-02-26 AU AU2010200738A patent/AU2010200738A1/en not_active Abandoned
- 2010-02-26 NZ NZ583609A patent/NZ583609A/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016009418A1 (en) * | 2014-07-14 | 2016-01-21 | Keane Bernard Michael | A heating system and a method for controlling a heating system |
| ITUA20163639A1 (en) * | 2016-05-20 | 2017-11-20 | Brahma S P A | HYBRID HEATING SYSTEM |
| US11549693B2 (en) | 2017-07-17 | 2023-01-10 | Wise Earth Pty Ltd | Hot water tank |
Also Published As
| Publication number | Publication date |
|---|---|
| NZ583609A (en) | 2011-07-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC1 | Assignment before grant (sect. 113) |
Owner name: SOLARPOWER PTY LTD Free format text: FORMER APPLICANT(S): SOLARPOWERREX PTY LTD |
|
| MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |