US20110168163A1 - System for providing solar heating functionality to a fluid heating system - Google Patents
System for providing solar heating functionality to a fluid heating system Download PDFInfo
- Publication number
- US20110168163A1 US20110168163A1 US13/119,159 US200913119159A US2011168163A1 US 20110168163 A1 US20110168163 A1 US 20110168163A1 US 200913119159 A US200913119159 A US 200913119159A US 2011168163 A1 US2011168163 A1 US 2011168163A1
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- Prior art keywords
- fluid
- solar
- heating system
- water
- enabling heating
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- 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.)
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 69
- 239000012530 fluid Substances 0.000 title claims description 102
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000004891 communication Methods 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000009182 swimming Effects 0.000 claims description 3
- -1 antifreeze Substances 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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- 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
- F24D17/0036—Domestic hot-water supply systems with combination of different kinds of heating means
- F24D17/0063—Domestic hot-water supply systems with combination of different kinds of heating means solar energy and conventional heaters
- F24D17/0068—Domestic hot-water supply systems with combination of different kinds of heating means solar energy and conventional heaters 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
-
- 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
Definitions
- the present invention in some embodiments thereof, relates to heating systems. More particularly, the present invention relates to a system for providing solar heating functionality to fluid heating systems previously configured to use other heating methods such as gas, fuel, or electrically heated systems.
- a typical non-solar heating system typically uses a dual-pipeline boiler which is served by just two pipelines: a cold-water line and a hot-water line.
- the boiler requires two more pipelines connecting the boiler to the solar heating panels. Consequently, there is no simple way to use existing dual-pipeline boilers with solar heating systems.
- the present invention is directed to providing a solar enabling heating system for providing solar heating functionality to a base fluid heating system, wherein said base fluid heating system comprising at least one fluid reservoir having a cold fluid line in fluid communication with at least one fluid source and a hot fluid line in fluid communication with at least one fluid tap.
- the solar enabling heating system comprising: a solar heater, having an inlet for connecting to the cold fluid line and an outlet for connecting to the hot fluid line; and at least one diverter valve configured to disconnect the fluid reservoir from said solar heater when fluid is drawn from the fluid reservoir via the fluid tap.
- the solar heater comprises at least one solar panel configured to heat fluid passing therethrough.
- the solar enabling heating system further comprising at least a first circulator pump configured to drive fluid from the cold fluid line through said solar heater.
- the solar enabling heating system further comprising at least one heat exchanger unit configured to transfer heat to a first fluid circulation loop from a second fluid circulation loop.
- the first fluid circulation loop is in fluid communication with the fluid reservoir.
- the said first circulator pump configured to drive fluid from the cold fluid line of the fluid reservoir to said heat exchanger.
- the solar enabling heating system has a second fluid circulation loop comprises a closed loop including a solar panel and a second circulator pump wherein said second fluid circulation loop contains a fluid selected from a group consisting of: water, antifreeze, oil-based solutions, water-based solutions and combinations thereof.
- said diverter valve comprises a three way valve.
- the solar enabling heating system further comprising a control unit configured to activate at least one circulator pump.
- said control unit comprises: at least one flow switch configured to sense fluid flow into the system from the fluid source, at least one temperature monitor configured to monitor the temperature of fluid within the fluid reservoir and the temperature of fluid within said solar heater.
- said control unit is configured to set said diverter valve to disconnect the fluid reservoir from said solar heater when fluid is drawn from the fluid reservoir via the fluid tap.
- said control unit is configured to activate at least one circulator pump when the fluid within said solar heater has a higher temperature than the fluid within the fluid reservoir.
- said control unit comprises a differential thermostat configured to control at least one of said circulator pump and said diverter valve.
- said control unit is configured to communicate with at least one of said circulator pump and a diverter valve using a communication means selected from a group consisting of: wired communication lines, WiFi technology, Bluetooth, and radio communication (RF).
- a communication means selected from a group consisting of: wired communication lines, WiFi technology, Bluetooth, and radio communication (RF).
- said temperature monitor comprises at least one computerized thermostat in the fluid reservoir.
- said temperature monitor comprises at least one thermostat in the fluid reservoir and at least one thermostat in said solar heater.
- said fluid reservoir comprises at least one of a group consisting of: a boiler, a swimming pool, a storage tank, a chemical storage vat, a fuel tank, a gas balloon and a dewer.
- said fluid reservoir contains a fluid selected from a group comprising: water, oil, fuel, gas or combinations thereof.
- FIG. 1 is a schematic illustration of a solar enabled water heating system utilizing a solar heater in accordance with a first embodiment of the present invention
- FIG. 2 represents the system of FIG. 1 in a first configuration in which the water tap is closed so that hot water does not leave the system;
- FIG. 3 represents the system of FIG. 1 in a second configuration in which the water tap is open, allowing hot water to flow out of the system, and
- FIG. 4 is a schematic illustration of a solar enabled water heating system in which the solar panel operates as part of a closed system in accordance with a second embodiment of the present invention.
- the present invention provides a unique and novel system for providing non-solar enabled fluid heating systems with solar heating functionality.
- like element numerals are used to indicate like elements appearing in one or more of the figures.
- the main idea of embodiments of the present solution is to have a combined heating system in which fluid flow to the user may be separated from the flow to the solar panel.
- embodiments described hereinbelow refer to simple boiler applications for heating water. It will be appreciated, however that other embodiments of the system may be applied to the heating of other fluids such as water based solutions, oils, fuels, gases and the like. Such fluids may be stored in various reservoirs such as boilers, swimming pools, storage tanks, chemical storage vats, fuel tanks, gas balloons and dewers.
- FIG. 1 representing a water heating system 100 which uses a solar panel in accordance with a first embodiment of the present invention.
- the base system comprises a boiler 110 having a hot water line 113 , and a cold water line 112 ; the system also comprises a cold water source 150 and water tap 160 for drawing hot water from the system as found in non-solar based systems.
- embodiments of the solar enabling heating system 100 further include a solar heater consisting of: a solar panel 170 , a controller 120 , a circulator pump 180 , a flow switch 130 and a diverter valve 140 . These features may enhance the water heating system 100 by providing solar heating functionality as described below.
- the solar panel 170 includes at least one panel-inlet 172 for introducing cold water and at least one panel-outlet 173 for delivering hot water to the boiler.
- the controller 120 typically includes a differential thermostat control configured to receive input from a temperature monitor 122 .
- the temperature monitor 122 may include at least one panel monitor 174 , for monitoring the water temperature in the solar panel and at least one boiler monitor 114 , for monitoring the water temperature in the boiler.
- the temperature monitor may include a single sensor for monitoring the solar panel or the boiler.
- Various temperature monitors may be used for example thermometers, thermistors, temperature sensitive resistors, thermocouples and the like.
- a computerized “Virtual Thermostat” type HOT07C may be configured to monitor fluid temperatures in the system.
- the circulator pump 180 is configured and operable to urge water entering the pump 180 through pump-inlet 181 and exiting through pump-outlet 182 .
- the circulator pump 180 may drive the circulation of water through the system.
- the flow switch 130 is provided for monitoring water flow through the system. Water is drawn through the flow switch 130 via a switch-inlet 131 to a switch-outlet 132 .
- the flow switch 130 is configured to sense the water flowing through the system 100 when water is drawn from the system 100 through the water tap 160 .
- the diverter valve 140 in the embodiment is a three way valve configured to direct water from valve-inlet 142 to either a first valve-outlet 141 or a second valve-outlet 143 .
- the diverter valve 140 may provide a time delay of about 6 seconds or so as required.
- piping is provided to maintain fluid communication between the various components of the system 100 as outlined below:
- the controller 120 is configured to receive signals, typically from the flow switch 130 and the temperature monitor 122 , and to control the circulator pump 180 and the diverter valve 140 . Typically, electrical communication between these components is maintained via conducting wires. Alternatively, according to other embodiments, other communication protocols may be employed such as wireless communication, Bluetooth, WiFi, radio communication (RF) and the like.
- signals typically from the flow switch 130 and the temperature monitor 122 , and to control the circulator pump 180 and the diverter valve 140 .
- electrical communication between these components is maintained via conducting wires.
- other communication protocols may be employed such as wireless communication, Bluetooth, WiFi, radio communication (RF) and the like.
- Operation of circulator pump 180 may be controlled by the controller 120 and typically depends on the relative water-temperatures of the solar panel 170 and the boiler 110 .
- a differential thermostat control 120 may be configured to send control signals to the circulator pump 180 .
- control signals may be used to activate the circulator pump 180 only when the water-temperature in the solar panel 170 as measured by the panel monitor 174 is higher than the water-temperature in boiler 110 as measured by boiler monitor 114 . It is noted that when the water-temperature in the solar panel 170 is equal to or lower than the water-temperature in the boiler 110 , the circulator pump 180 may usefully be rendered inactive.
- FIG. 2 represents the system 100 in a first configuration in which the water tap 160 is closed.
- FIG. 3 represents the system 100 in a second configuration in which the water tap 160 is open.
- the system 100 of the first embodiment is shown in the first configuration.
- the tap 160 is closed so no water is drawn out of the system.
- hot water in the solar panel 170 may be driven into the boiler 110 by the pump 180 .
- the system 100 is controlled such that water is only transferred into the boiler 110 when the panel water-temperature is higher than that of the boiler water-temperature.
- the flow switch 130 senses no water flow. This is communicated to the controller 120 which, following a suitable delay, for example a delay of 6 seconds, sets the diverter valve 140 to allow water to flow from the valve-inlet 142 to the second valve-outlet 143 .
- An activation signal may also be communicated to the circulator pump 180 .
- Water is then circulated through the panel 170 , from the cold water line 112 of boiler 110 via the panel inlet 172 .
- the cold water flowing through the panel 170 may be heated by solar energy.
- the hot water flowing out of the panel-outlet 173 flows via the diverter valve 140 , back to the hot-water line 113 of boiler 110 .
- the circulator pump 180 is typically activated only when the water-temperature in the solar panel 170 is higher than the water-temperature in the boiler 110 .
- the controller 120 sets the diverter valve 140 to change the direction of water flow enabling flow from the valve inlet 142 to the first valve outlet 141 . This prevents water from flowing from the solar panel 170 to the boiler 110 . In this configuration water does not flow from the panel 170 to the boiler 110 . Rather, if the circulator pump 180 is active water is circulated in a small loop through solar panel 170 and the diverter 140 . This enables the boiler to operate independently from the solar panel for example when water is running through water tap 160 . This brings the system 100 into the second configuration as presented in FIG. 3 .
- FIG. 3 represents the system 100 in the second configuration with the water tap 160 open.
- water is drawn into the system 100 from the source 150 .
- the flow switch 130 senses the flow and the controller 120 sets the diverter 140 to direct water to the first valve-outlet 141 if it is not already in this state.
- water may be drawn from boiler 110 via the water tap 160 in a similar manner to the operation of a non-solar boiler. It is noted that, in contradistinction to prior art solutions, the temperature of the water running from the water tap 160 of the system 100 in the second configuration is stable.
- the system may be a closed system in which the liquid from the solar panel does not mix with the water in the boiler. It is noted that in a closed system additives material such as antifreeze liquid may be introduced into the liquid in the solar panel.
- the liquid may be an oil-based solution, a water-based solution or the like. Closed systems may use devices such as heat exchanger to transfer heat energy between the panel liquid and the boiler water.
- the closed solar water heating system 400 further includes a heat exchange unit 190 configured to transfer heat between two separate water (liquid) circulation loops each circulation loop being driven by a dedicated circulator pump 180 , 195 .
- the second circulator 195 is configured to drive hot liquid from the solar panel 170 to the heat exchange unit 190 and may therefore be configured to operate when the liquid temperature in the solar panel 170 is higher than that of the water temperature in the boiler 110 .
- the operation of pump 195 may also be regulated by control 120 in the same manner as pump 180 .
- a first heat exchange inlet 194 and a first heat exchange outlet 193 connect the heat exchange to a first water loop, which includes the water boiler 110 .
- a second heat exchange inlet 191 and a second heat exchange outlet 192 connect the heat exchange to a second loop, which is a closed loop passing through the solar panel 170 .
- water heating systems 100 and 400 may provide a stream of hot water which has a steady homogeneous temperature when required. At other times, when water is not drawn from the system, the hot water may be collected in the boiler.
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- 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)
Abstract
Description
- The present invention, in some embodiments thereof, relates to heating systems. More particularly, the present invention relates to a system for providing solar heating functionality to fluid heating systems previously configured to use other heating methods such as gas, fuel, or electrically heated systems.
- Existing systems for heating fluids such as water and the like may operate on gas, diesel fuel, electricity or solar energy. Due to the rising cost of gas, diesel fuel, and electricity it is desirable to use solar energy for heating. In addition, solar energy is a green resource and its use does not generate pollution. In order to save the cost of buying a new boiler it is desirable to convert existing heating system to operate on solar energy or even mix the existing method together with operation on solar energy, and thus save the cost of a new boiler.
- A typical non-solar heating system typically uses a dual-pipeline boiler which is served by just two pipelines: a cold-water line and a hot-water line. In solar based systems the boiler requires two more pipelines connecting the boiler to the solar heating panels. Consequently, there is no simple way to use existing dual-pipeline boilers with solar heating systems.
- If the inlet and outlet of the solar heating panels are connected directly to the cold-water line and hot-water line of the boiler, respectively, water would only flow through the system when water is drawn from the boiler. As a result hot water would remain in the solar panel for long periods of time and this would prevent hot water from collecting in the boiler. This may even cause overheating and damage to the pipes in the solar panel. Furthermore, when hot water is drawn from the boiler, hot water from the solar panel may mix with water from the boiler resulting in the temperature of the water leaving the system being non-homogeneous. It will be appreciated that this would be most undesirable in many household settings such as during a shower or the like.
- One suggested system for adapting a boiler based heating system to suit solar heating technologies is described in the French patent document FR2557959 to Geneve Philippe, titled “Simplified Solar Water Heater”. Philippe suggests connecting a T-connector to the boiler inlet pipe in a way that reduces the diameter of the pipe. Such a pipe would impede the water flow and increase pressure needed for circulating the water in the system. Such a system is prone to build-up of lime scale inside the pipes. Furthermore, like similar commercial solutions, Philippe's solution involves making changes to the existing boiler by inserting a pipe into the boiler. It is noted that such a change to an old boiler is problematic as it may result in damage to boiler parts. Other solutions involve the addition of another boiler which would incur still more costs.
- There is a need for a retrofittable system for enhancing a standard heating system with solar heating functionality. The present invention addresses this need.
- In accordance with a first embodiment, the present invention is directed to providing a solar enabling heating system for providing solar heating functionality to a base fluid heating system, wherein said base fluid heating system comprising at least one fluid reservoir having a cold fluid line in fluid communication with at least one fluid source and a hot fluid line in fluid communication with at least one fluid tap. The solar enabling heating system comprising: a solar heater, having an inlet for connecting to the cold fluid line and an outlet for connecting to the hot fluid line; and at least one diverter valve configured to disconnect the fluid reservoir from said solar heater when fluid is drawn from the fluid reservoir via the fluid tap.
- Optionally, the solar heater comprises at least one solar panel configured to heat fluid passing therethrough.
- Preferably, the solar enabling heating system further comprising at least a first circulator pump configured to drive fluid from the cold fluid line through said solar heater.
- Preferably, the solar enabling heating system further comprising at least one heat exchanger unit configured to transfer heat to a first fluid circulation loop from a second fluid circulation loop.
- Preferably, the first fluid circulation loop is in fluid communication with the fluid reservoir. Preferably, the said first circulator pump configured to drive fluid from the cold fluid line of the fluid reservoir to said heat exchanger.
- In accordance with another embodiment the solar enabling heating system has a second fluid circulation loop comprises a closed loop including a solar panel and a second circulator pump wherein said second fluid circulation loop contains a fluid selected from a group consisting of: water, antifreeze, oil-based solutions, water-based solutions and combinations thereof.
- Preferably, in the solar enabling heating said diverter valve comprises a three way valve.
- Preferably, the solar enabling heating system further comprising a control unit configured to activate at least one circulator pump.
- Preferably, said control unit comprises: at least one flow switch configured to sense fluid flow into the system from the fluid source, at least one temperature monitor configured to monitor the temperature of fluid within the fluid reservoir and the temperature of fluid within said solar heater.
- Preferably, said control unit is configured to set said diverter valve to disconnect the fluid reservoir from said solar heater when fluid is drawn from the fluid reservoir via the fluid tap.
- Preferably, said control unit is configured to activate at least one circulator pump when the fluid within said solar heater has a higher temperature than the fluid within the fluid reservoir.
- Preferably, said control unit comprises a differential thermostat configured to control at least one of said circulator pump and said diverter valve.
- Preferably, said control unit is configured to communicate with at least one of said circulator pump and a diverter valve using a communication means selected from a group consisting of: wired communication lines, WiFi technology, Bluetooth, and radio communication (RF).
- Preferably, said temperature monitor comprises at least one computerized thermostat in the fluid reservoir.
- In accordance with another embodiment, said temperature monitor comprises at least one thermostat in the fluid reservoir and at least one thermostat in said solar heater.
- In accordance with other embodiments in the solar enabling heating system said fluid reservoir comprises at least one of a group consisting of: a boiler, a swimming pool, a storage tank, a chemical storage vat, a fuel tank, a gas balloon and a dewer.
- In accordance with other embodiments of the solar enabling heating system said fluid reservoir contains a fluid selected from a group comprising: water, oil, fuel, gas or combinations thereof.
- Some embodiments of the invention are herein described, by way of example only, with reference to the accompanying drawings. With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of the preferred embodiments of the present invention only, and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show structural details of the invention in more detail than is necessary for a fundamental understanding of the invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the invention may be embodied in practice.
- In the drawings:
-
FIG. 1 is a schematic illustration of a solar enabled water heating system utilizing a solar heater in accordance with a first embodiment of the present invention; -
FIG. 2 represents the system ofFIG. 1 in a first configuration in which the water tap is closed so that hot water does not leave the system; -
FIG. 3 represents the system ofFIG. 1 in a second configuration in which the water tap is open, allowing hot water to flow out of the system, and -
FIG. 4 is a schematic illustration of a solar enabled water heating system in which the solar panel operates as part of a closed system in accordance with a second embodiment of the present invention. - Before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not necessarily limited in its application to the details set forth in the following description or exemplified by the examples. The invention is capable of other embodiments or of being practiced or carried out in various ways.
- It will be appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination or as suitable in any other described embodiment of the invention. Certain features described in the context of various embodiments are not to be considered essential features of those embodiments, unless the embodiment is inoperative without those elements.
- The present invention provides a unique and novel system for providing non-solar enabled fluid heating systems with solar heating functionality. In the detailed description that follows, like element numerals are used to indicate like elements appearing in one or more of the figures.
- The main idea of embodiments of the present solution is to have a combined heating system in which fluid flow to the user may be separated from the flow to the solar panel.
- For clarity, embodiments described hereinbelow refer to simple boiler applications for heating water. It will be appreciated, however that other embodiments of the system may be applied to the heating of other fluids such as water based solutions, oils, fuels, gases and the like. Such fluids may be stored in various reservoirs such as boilers, swimming pools, storage tanks, chemical storage vats, fuel tanks, gas balloons and dewers.
- Reference is now made to
FIG. 1 representing awater heating system 100 which uses a solar panel in accordance with a first embodiment of the present invention. The base system comprises aboiler 110 having ahot water line 113, and acold water line 112; the system also comprises acold water source 150 andwater tap 160 for drawing hot water from the system as found in non-solar based systems. - In addition to the above components of the base system, embodiments of the solar enabling
heating system 100 further include a solar heater consisting of: asolar panel 170, acontroller 120, acirculator pump 180, aflow switch 130 and adiverter valve 140. These features may enhance thewater heating system 100 by providing solar heating functionality as described below. - The
solar panel 170 includes at least one panel-inlet 172 for introducing cold water and at least one panel-outlet 173 for delivering hot water to the boiler. - The
controller 120 typically includes a differential thermostat control configured to receive input from atemperature monitor 122. According to some embodiments, thetemperature monitor 122 may include at least onepanel monitor 174, for monitoring the water temperature in the solar panel and at least oneboiler monitor 114, for monitoring the water temperature in the boiler. Alternatively, the temperature monitor may include a single sensor for monitoring the solar panel or the boiler. Various temperature monitors may be used for example thermometers, thermistors, temperature sensitive resistors, thermocouples and the like. In particular embodiments, a computerized “Virtual Thermostat” type HOT07C, may be configured to monitor fluid temperatures in the system. - The
circulator pump 180 is configured and operable to urge water entering thepump 180 through pump-inlet 181 and exiting through pump-outlet 182. Thus thecirculator pump 180 may drive the circulation of water through the system. - The
flow switch 130 is provided for monitoring water flow through the system. Water is drawn through theflow switch 130 via a switch-inlet 131 to a switch-outlet 132. Theflow switch 130 is configured to sense the water flowing through thesystem 100 when water is drawn from thesystem 100 through thewater tap 160. - The
diverter valve 140, sometimes referred to as the inverter valve, in the embodiment is a three way valve configured to direct water from valve-inlet 142 to either a first valve-outlet 141 or a second valve-outlet 143. In certain embodiments, thediverter valve 140 may provide a time delay of about 6 seconds or so as required. - Note that piping is provided to maintain fluid communication between the various components of the
system 100 as outlined below: -
- The cold-
water line 112 ofboiler 110 is connected via piping to the pump-inlet 181, to the switch-outlet 132 and to the first valve-outlet 141. - The hot-
water line 113 ofboiler 110 is connected via piping to thewater tap 160 as well as to the second valve-outlet 143. - The
cold water source 150 is connected via piping to the switch-inlet 131. - The pump-
outlet 182 is connected via piping to the panel-inlet 172. The panel-outlet 173 is connected via piping to the valve-inlet 142.
- The cold-
- The
controller 120 is configured to receive signals, typically from theflow switch 130 and thetemperature monitor 122, and to control thecirculator pump 180 and thediverter valve 140. Typically, electrical communication between these components is maintained via conducting wires. Alternatively, according to other embodiments, other communication protocols may be employed such as wireless communication, Bluetooth, WiFi, radio communication (RF) and the like. - Operation of
circulator pump 180 may be controlled by thecontroller 120 and typically depends on the relative water-temperatures of thesolar panel 170 and theboiler 110. Accordingly, adifferential thermostat control 120 may be configured to send control signals to thecirculator pump 180. Usefully, control signals may be used to activate thecirculator pump 180 only when the water-temperature in thesolar panel 170 as measured by thepanel monitor 174 is higher than the water-temperature inboiler 110 as measured byboiler monitor 114. It is noted that when the water-temperature in thesolar panel 170 is equal to or lower than the water-temperature in theboiler 110, thecirculator pump 180 may usefully be rendered inactive. - Reference is now made to
FIG. 2 and toFIG. 3 showing thesystem 100 of the first embodiments in two flow configurations.FIG. 2 represents thesystem 100 in a first configuration in which thewater tap 160 is closed.FIG. 3 represents thesystem 100 in a second configuration in which thewater tap 160 is open. - With particular reference to
FIG. 2 , thesystem 100 of the first embodiment is shown in the first configuration. Thetap 160 is closed so no water is drawn out of the system. In this configuration of thesystem 100, hot water in thesolar panel 170 may be driven into theboiler 110 by thepump 180. Preferably, thesystem 100 is controlled such that water is only transferred into theboiler 110 when the panel water-temperature is higher than that of the boiler water-temperature. - With the
water source 150 disconnected (closed), theflow switch 130 senses no water flow. This is communicated to thecontroller 120 which, following a suitable delay, for example a delay of 6 seconds, sets thediverter valve 140 to allow water to flow from the valve-inlet 142 to the second valve-outlet 143. An activation signal may also be communicated to thecirculator pump 180. Water is then circulated through thepanel 170, from thecold water line 112 ofboiler 110 via thepanel inlet 172. The cold water flowing through thepanel 170 may be heated by solar energy. The hot water flowing out of the panel-outlet 173 flows via thediverter valve 140, back to the hot-water line 113 ofboiler 110. As noted above, thecirculator pump 180 is typically activated only when the water-temperature in thesolar panel 170 is higher than the water-temperature in theboiler 110. - When the
flow switch 130 senses water flow into thesystem 100 from thesource 150, then thecontroller 120 sets thediverter valve 140 to change the direction of water flow enabling flow from thevalve inlet 142 to thefirst valve outlet 141. This prevents water from flowing from thesolar panel 170 to theboiler 110. In this configuration water does not flow from thepanel 170 to theboiler 110. Rather, if thecirculator pump 180 is active water is circulated in a small loop throughsolar panel 170 and thediverter 140. This enables the boiler to operate independently from the solar panel for example when water is running throughwater tap 160. This brings thesystem 100 into the second configuration as presented inFIG. 3 . - Reference is now made to
FIG. 3 which represents thesystem 100 in the second configuration with thewater tap 160 open. When thewater tap 160 is opened water is drawn into thesystem 100 from thesource 150. Theflow switch 130 senses the flow and thecontroller 120 sets thediverter 140 to direct water to the first valve-outlet 141 if it is not already in this state. In this second configuration, water may be drawn fromboiler 110 via thewater tap 160 in a similar manner to the operation of a non-solar boiler. It is noted that, in contradistinction to prior art solutions, the temperature of the water running from thewater tap 160 of thesystem 100 in the second configuration is stable. - In other embodiments of the solar heating system, the system may be a closed system in which the liquid from the solar panel does not mix with the water in the boiler. It is noted that in a closed system additives material such as antifreeze liquid may be introduced into the liquid in the solar panel. Variously, the liquid may be an oil-based solution, a water-based solution or the like. Closed systems may use devices such as heat exchanger to transfer heat energy between the panel liquid and the boiler water.
- Reference is now made to
FIG. 4 representing a closed solarwater heating system 400 according to another embodiment. It is noted that similar numbers are used for similar components as those of the first embodiments shown inFIG. 1 . The closed solarwater heating system 400 further includes aheat exchange unit 190 configured to transfer heat between two separate water (liquid) circulation loops each circulation loop being driven by adedicated circulator pump 180, 195. It is noted that the second circulator 195 is configured to drive hot liquid from thesolar panel 170 to theheat exchange unit 190 and may therefore be configured to operate when the liquid temperature in thesolar panel 170 is higher than that of the water temperature in theboiler 110. The operation of pump 195 may also be regulated bycontrol 120 in the same manner aspump 180. - A first
heat exchange inlet 194 and a firstheat exchange outlet 193 connect the heat exchange to a first water loop, which includes thewater boiler 110. A secondheat exchange inlet 191 and a secondheat exchange outlet 192 connect the heat exchange to a second loop, which is a closed loop passing through thesolar panel 170. -
- The first loop is formed by piping connecting the pump-
outlet 182 to the firstheat exchange inlet 194 and piping connecting the firstheat exchange outlet 193 to thevalve inlet 142. - The second loop is formed by piping connecting
solar panel outlet 173 to the secondheat exchange inlet 191, piping connecting the secondheat exchange outlet 192 to a pump-inlet 197 associated with the second circulator pump 195; and piping connecting a pump-outlet 196 of the second circulator pump 195 to thepanel inlet 172.
- The first loop is formed by piping connecting the pump-
- It will be appreciated that, in contradistinction to the prior art,
water heating systems - It should be clear that the description of the embodiments and attached Figures set forth in this specification serves only for a better understanding of the invention, without limiting its scope as covered by the following Claims.
- It should also be clear that a person skilled in the art, after reading the present specification can make adjustments or amendments to the attached Figures and above described embodiments that would still be covered by the following Claims.
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/119,159 US20110168163A1 (en) | 2008-09-16 | 2009-09-13 | System for providing solar heating functionality to a fluid heating system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9729808P | 2008-09-16 | 2008-09-16 | |
PCT/IL2009/000892 WO2010032236A1 (en) | 2008-09-16 | 2009-09-13 | System for providing solar heating functionality to a fluid heating system |
US13/119,159 US20110168163A1 (en) | 2008-09-16 | 2009-09-13 | System for providing solar heating functionality to a fluid heating system |
Publications (1)
Publication Number | Publication Date |
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US20110168163A1 true US20110168163A1 (en) | 2011-07-14 |
Family
ID=42039125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/119,159 Abandoned US20110168163A1 (en) | 2008-09-16 | 2009-09-13 | System for providing solar heating functionality to a fluid heating system |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110168163A1 (en) |
EP (1) | EP2340403A1 (en) |
AU (1) | AU2009294228A1 (en) |
WO (1) | WO2010032236A1 (en) |
ZA (1) | ZA201102718B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103196237A (en) * | 2013-04-08 | 2013-07-10 | 山东力诺瑞特新能源有限公司 | Solar system |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010014767A1 (en) * | 2010-04-13 | 2011-10-13 | Robert Bosch Gmbh | Mixing device for setting the hot water temperature |
EP2383523B1 (en) * | 2010-04-30 | 2012-07-11 | Alfa Laval Corporate AB | Heating plant for the production of domestic hot water |
EP2673571A4 (en) * | 2011-02-08 | 2015-08-05 | Trathom Corp | Solar thermal energy capture system with overheating protection and cold temperature bypass |
CN114396729A (en) * | 2022-01-10 | 2022-04-26 | 东营市东达机械制造有限责任公司 | Photo-thermal heating device with controllable heating temperature |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2041461A (en) * | 1933-04-15 | 1936-05-19 | Bendix Aviat Corp | Welding machine |
US3931806A (en) * | 1974-05-06 | 1976-01-13 | Johnson Service Company | Method and apparatus for storing a medium heated by solar energy |
US4027821A (en) * | 1975-07-18 | 1977-06-07 | International Telephone And Telegraph Corporation | Solar heating/cooling system |
US4061132A (en) * | 1976-06-25 | 1977-12-06 | Larry Ashton | Control valve means particularly adapted for swimming pool heater installations embodying a solar heater |
US4119087A (en) * | 1976-07-26 | 1978-10-10 | A. O. Smith Corporation | Solar water heating system |
US4156455A (en) * | 1975-07-04 | 1979-05-29 | Der Meulen Theo Van | Method and apparatus for controlling a heat transfer installation |
US4191166A (en) * | 1977-12-27 | 1980-03-04 | Richdel, Inc. | Solar heat system |
US4191172A (en) * | 1978-05-19 | 1980-03-04 | General Motors Corporation | Thermostatic mixer valve |
US4246886A (en) * | 1978-11-20 | 1981-01-27 | Rondal Sitzlar | Freeze protected hot water solar heating apparatus |
US4273184A (en) * | 1978-09-05 | 1981-06-16 | Osaka Gas Kabushiki Kaisha | Solar heat utilized air-conditioning system |
US4339930A (en) * | 1980-07-03 | 1982-07-20 | The United States Of America As Represented By The Secretary Of The Navy | Control system for solar-assisted heat pump system |
US4350144A (en) * | 1980-08-18 | 1982-09-21 | Stanford Associates, Inc. | Hot water heating system |
US4376436A (en) * | 1979-08-28 | 1983-03-15 | Victorio Tacchi | Household hot water systems |
US4378784A (en) * | 1980-02-20 | 1983-04-05 | Grumman Aerospace Corporation | Solar heating system |
US4397294A (en) * | 1981-08-10 | 1983-08-09 | Mancebo Ronald A | Solar water heating system |
US4404957A (en) * | 1979-11-30 | 1983-09-20 | Hoechst Aktiengesellschaft | Equipment and process for heating water by solar energy |
US4478210A (en) * | 1979-04-16 | 1984-10-23 | Sieradski Leonard M | Solar heating system |
US4644935A (en) * | 1984-09-21 | 1987-02-24 | Rayflow Corp. | Solar heater control |
US5806511A (en) * | 1995-01-13 | 1998-09-15 | Hart; Douglas Robinson Sanford | Method and apparatus to provide freeze protection for solar water heating systems |
US6119682A (en) * | 1996-07-30 | 2000-09-19 | Hazan; Haim | Water heater and storage tank |
US6536677B2 (en) * | 2000-06-08 | 2003-03-25 | University Of Puerto Rico | Automation and control of solar air conditioning systems |
US20050125083A1 (en) * | 2003-11-10 | 2005-06-09 | Kiko Frederick J. | Automation apparatus and methods |
WO2006136163A2 (en) * | 2005-06-20 | 2006-12-28 | Cn Energy Developments A/S | A solar water heating system |
US20070227529A1 (en) * | 2006-03-29 | 2007-10-04 | Fafco, Inc. | Kit for solar water heating system |
US20080216821A1 (en) * | 2007-03-05 | 2008-09-11 | Taco, Inc. | Solar heating systems with integrated circulator control |
US20100031953A1 (en) * | 2008-08-07 | 2010-02-11 | Krassimire Mihaylov Penev | Hybrid Water Heating System |
US7848853B2 (en) * | 2008-05-13 | 2010-12-07 | Solarlogic, Llc | System and method for controlling hydronic systems having multiple sources and multiple loads |
US8201553B2 (en) * | 2007-10-03 | 2012-06-19 | Dux Manufacturing Limited | Solar hot water system and method of operating a solar hot water system |
US8375934B2 (en) * | 2010-04-26 | 2013-02-19 | Shanghai Jite Enterprise Co., Ltd. | Solar water heater retrofitted from conventional water heater, system and method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6915656B2 (en) * | 2003-07-14 | 2005-07-12 | Eco Technology Solutions, Llc | Heat pump system |
-
2009
- 2009-09-13 AU AU2009294228A patent/AU2009294228A1/en not_active Abandoned
- 2009-09-13 US US13/119,159 patent/US20110168163A1/en not_active Abandoned
- 2009-09-13 EP EP09814178A patent/EP2340403A1/en not_active Withdrawn
- 2009-09-13 WO PCT/IL2009/000892 patent/WO2010032236A1/en active Application Filing
-
2011
- 2011-04-12 ZA ZA2011/02718A patent/ZA201102718B/en unknown
Patent Citations (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2041461A (en) * | 1933-04-15 | 1936-05-19 | Bendix Aviat Corp | Welding machine |
US3931806A (en) * | 1974-05-06 | 1976-01-13 | Johnson Service Company | Method and apparatus for storing a medium heated by solar energy |
US4156455A (en) * | 1975-07-04 | 1979-05-29 | Der Meulen Theo Van | Method and apparatus for controlling a heat transfer installation |
US4027821A (en) * | 1975-07-18 | 1977-06-07 | International Telephone And Telegraph Corporation | Solar heating/cooling system |
US4061132A (en) * | 1976-06-25 | 1977-12-06 | Larry Ashton | Control valve means particularly adapted for swimming pool heater installations embodying a solar heater |
US4119087A (en) * | 1976-07-26 | 1978-10-10 | A. O. Smith Corporation | Solar water heating system |
US4191166A (en) * | 1977-12-27 | 1980-03-04 | Richdel, Inc. | Solar heat system |
US4191172A (en) * | 1978-05-19 | 1980-03-04 | General Motors Corporation | Thermostatic mixer valve |
US4273184A (en) * | 1978-09-05 | 1981-06-16 | Osaka Gas Kabushiki Kaisha | Solar heat utilized air-conditioning system |
US4246886A (en) * | 1978-11-20 | 1981-01-27 | Rondal Sitzlar | Freeze protected hot water solar heating apparatus |
US4478210A (en) * | 1979-04-16 | 1984-10-23 | Sieradski Leonard M | Solar heating system |
US4376436A (en) * | 1979-08-28 | 1983-03-15 | Victorio Tacchi | Household hot water systems |
US4404957A (en) * | 1979-11-30 | 1983-09-20 | Hoechst Aktiengesellschaft | Equipment and process for heating water by solar energy |
US4378784A (en) * | 1980-02-20 | 1983-04-05 | Grumman Aerospace Corporation | Solar heating system |
US4339930A (en) * | 1980-07-03 | 1982-07-20 | The United States Of America As Represented By The Secretary Of The Navy | Control system for solar-assisted heat pump system |
US4350144A (en) * | 1980-08-18 | 1982-09-21 | Stanford Associates, Inc. | Hot water heating system |
US4397294A (en) * | 1981-08-10 | 1983-08-09 | Mancebo Ronald A | Solar water heating system |
US4644935A (en) * | 1984-09-21 | 1987-02-24 | Rayflow Corp. | Solar heater control |
US5806511A (en) * | 1995-01-13 | 1998-09-15 | Hart; Douglas Robinson Sanford | Method and apparatus to provide freeze protection for solar water heating systems |
US6119682A (en) * | 1996-07-30 | 2000-09-19 | Hazan; Haim | Water heater and storage tank |
US6536677B2 (en) * | 2000-06-08 | 2003-03-25 | University Of Puerto Rico | Automation and control of solar air conditioning systems |
US20050125083A1 (en) * | 2003-11-10 | 2005-06-09 | Kiko Frederick J. | Automation apparatus and methods |
US20100218757A1 (en) * | 2005-06-20 | 2010-09-02 | Cn Energy Development A/S | solar water heating system |
WO2006136163A2 (en) * | 2005-06-20 | 2006-12-28 | Cn Energy Developments A/S | A solar water heating system |
US20070227529A1 (en) * | 2006-03-29 | 2007-10-04 | Fafco, Inc. | Kit for solar water heating system |
US20080216821A1 (en) * | 2007-03-05 | 2008-09-11 | Taco, Inc. | Solar heating systems with integrated circulator control |
US8201553B2 (en) * | 2007-10-03 | 2012-06-19 | Dux Manufacturing Limited | Solar hot water system and method of operating a solar hot water system |
US7848853B2 (en) * | 2008-05-13 | 2010-12-07 | Solarlogic, Llc | System and method for controlling hydronic systems having multiple sources and multiple loads |
US20100031953A1 (en) * | 2008-08-07 | 2010-02-11 | Krassimire Mihaylov Penev | Hybrid Water Heating System |
US8375934B2 (en) * | 2010-04-26 | 2013-02-19 | Shanghai Jite Enterprise Co., Ltd. | Solar water heater retrofitted from conventional water heater, system and method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103196237A (en) * | 2013-04-08 | 2013-07-10 | 山东力诺瑞特新能源有限公司 | Solar system |
Also Published As
Publication number | Publication date |
---|---|
ZA201102718B (en) | 2012-06-27 |
AU2009294228A8 (en) | 2011-06-09 |
AU2009294228A1 (en) | 2010-03-25 |
WO2010032236A1 (en) | 2010-03-25 |
EP2340403A1 (en) | 2011-07-06 |
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