US20130025309A1 - Energy-saving hot water-heating device and system applicable to the same - Google Patents
Energy-saving hot water-heating device and system applicable to the same Download PDFInfo
- Publication number
- US20130025309A1 US20130025309A1 US13/191,710 US201113191710A US2013025309A1 US 20130025309 A1 US20130025309 A1 US 20130025309A1 US 201113191710 A US201113191710 A US 201113191710A US 2013025309 A1 US2013025309 A1 US 2013025309A1
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- water
- hot water
- heating
- pipes
- coolant
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 117
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- 239000002826 coolant Substances 0.000 claims abstract description 91
- 238000004378 air conditioning Methods 0.000 claims abstract description 28
- 239000002918 waste heat Substances 0.000 claims abstract description 18
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- 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
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- 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
- F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
- F24D17/001—Domestic hot-water supply systems using recuperation of waste heat with accumulation of 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
-
- 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
- F24D2200/00—Heat sources or energy sources
- F24D2200/16—Waste heat
- F24D2200/31—Air conditioning systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Definitions
- the present invention relates to energy-saving hot water-heating devices and systems applicable thereto, and more particularly, to an energy-saving hot water-heating device and a system applicable thereto which are for use in treating waste heat produced as a result of the operation of an air conditioning system and heating-producing hot water.
- Operation of an air conditioning system involves releasing heat and absorbing heat by the expansion and compression of a coolant, absorbing indoor heat, and discharging the absorbed indoor heat outdoors.
- the hardware for controlling coolant circulation essentially comprises four components, namely an evaporator, a compressor, a condenser, and a coolant controller.
- coolant circulation entails turning an outdoor coolant into a high-temperature high-pressure gaseous coolant by the compressor, and then removing heat from the gaseous coolant by the condenser to turn the gaseous coolant into a moderate-temperature high-pressure liquid coolant.
- the coolant controller turns the moderate-temperature high-pressure liquid coolant into a moderate-temperature low-pressure liquid coolant for working at the evaporation temperature of the evaporator.
- the moderate-temperature low-pressure liquid coolant is conveyed to an indoor environment by a coolant conveying pipe, and in the indoor environment the evaporator absorbs indoor heat to turn the moderate-temperature low-pressure liquid coolant into a gaseous coolant.
- the gaseous coolant is introduced into the outdoor compressor by the coolant conveying pipe, such that the outdoor compressor turns the gaseous coolant into a high-temperature high-pressure gaseous coolant for circulation.
- the conventional condenser of an air conditioning system resorts to gas cooling and works by blowing the heat out of the air conditioning system by means of a fan and through the heat exchange that takes place between a coolant circulation coil pipe and a fin-like plate.
- heat can be removed by the aforesaid prior art, the heat thus removed contributes to accumulation of heat in a city, thereby exacerbating the greenhouse effect.
- a cooling tower is effective in performing a cooling process by means of a cooling liquid
- the temperature of the cooling liquid rises gradually because of heat exchange; as a result, it is necessary for a high-temperature cooling liquid to be turned into a mist by a spraying device, and then for cool air to be drawn by an exhaust fan to confront the mist of the cooling liquid undergo heat exchange therewith. Nevertheless, the resultant waste heat ends up being emitted to the atmosphere by the exhaust fan, thereby adding to the greenhouse effect.
- a conventional air conditioning system designed to treat waste heat and recycle cool air does overcome the problem with emission of waste heat to the atmosphere and is, in particular, effective in heating-producing hot water by means of a waste heat recovering and hot water producing device as well as lowering the coolant temperature by means of a high-temperature coolant. Nevertheless, the conversion efficiency of the heat exchange device employed by the conventional air conditioning system in heating-producing hot water is too low to enhance the performance of the conventional air conditioning system in waste heat recycling.
- the inventor of the present invention conducted extensive researches and experiments according to the inventor's years of experience in the related industry, and finally developed an energy-saving hot water-heating device and a system applicable thereto as disclosed in the present invention to enhance heating efficiency as well as effectuate waste heat recycling, power saving, and environmental protection.
- the present invention provides an energy-saving hot water-heating device for heating-producing hot water from waste heat generated by an air conditioning system, the device comprising a casing, a coolant circulation coil pipe, a plurality of heating pipes, and a plurality of communicating pipes.
- the coolant circulation coil pipe is made of metal, disposed in the casing, curved, and comprises a coolant inlet, a coolant outlet, and a plurality of heat-dissipating pipes, the coolant inlet extending out of the casing and communicating with the air conditioning system, the coolant outlet extending out of the casing and communicating with the air conditioning system, and the heat-dissipating pipes being connected between the coolant inlet and the coolant outlet.
- the heating pipes are water conveying pipes and are of a larger inner diameter than the coolant circulation coil pipe is, wherein each of the heat-dissipating pipes of the coolant circulation coil pipe fits inside a corresponding one of the heating pipes, thereby allowing a running water channel to be formed between an inner wall of each of the heating pipes and an outer wall of a corresponding one of the heat-dissipating pipes, wherein one of the heating pipes has a water inlet extending out of the casing, wherein another one of the heating pipes has a water outlet extending out of the casing.
- the communicating pipes are each connected between two adjacent ones of the heating pipes, such that the running water channels inside the heating pipes are in communication with each other through the communicating pipes.
- the present invention provides a system applicable to an energy-saving hot water-heating device.
- the system in a preferred embodiment thereof, comprises an energy-saving hot water-heating device, an automatic circulation water tank, a hot water canister, a heating boiler, a water feeding pipeline, a water returning pipeline, and a hot water discharging pipeline.
- the automatic circulation water tank stores water and has a first pumping motor and a temperature sensor, the first pumping motor drawing water from the automatic circulation water tank, and the temperature sensor having a controller and sensing temperature.
- the hot water canister provides thermal insulation for the stored hot water, and is independent of the automatic circulation water tank.
- the heating boiler heats up the hot water in the hot water canister, wherein the heating boiler and the hot water canister are either integrally formed as a unitary structure or separate.
- the water feeding pipeline is connected between the water inlet of the energy-saving hot water-heating device and the first pumping motor of the automatic circulation water tank for conveying water from the automatic circulation water tank to a running water channel of the energy-saving hot water-heating device through the first pumping motor, wherein a pressure reducing valve is disposed at the water feeding pipeline for regulating water pressure.
- the water returning pipeline is connected between the automatic circulation water tank and a water outlet of the energy-saving hot water-heating device for sending the hot water produced by the energy-saving hot water-heating device back to the automatic circulation water tank.
- the hot water discharging pipeline is connected between the automatic circulation water tank and the hot water canister and equipped with a second pumping motor adapted for delivering hot water from the automatic circulation water tank to the hot water canister and connected to the temperature sensor of the automatic circulation water tank.
- the energy-saving hot water-heating device further comprises a temperature sensor equipped with a controller, adapted for sensing temperature, disposed at the coolant circulation coil pipe, and connected to the first pumping motor of the automatic circulation water tank.
- a maintenance opening capable of being shut and opened is disposed at the automatic circulation water tank.
- a drainage hole is disposed at a bottom of the automatic circulation water tank for removing impurities.
- an exhaust vent is disposed at a top of the automatic circulation water tank for relieving pressure.
- the system applicable to the energy-saving hot water-heating device further comprises a raw water pipeline in communication with the automatic circulation water tank.
- a pressure reducing valve is disposed at the water returning pipeline for regulating water pressure.
- the pressure reducing valve is a spherical pressure reducing valve.
- the present invention provides an energy-saving hot water-heating device and a system applicable thereto, such that a coolant inlet and a coolant outlet of a coolant circulation coil pipe are connected to a coolant pipe of an air conditioning system for introducing waste heat generated by the air conditioning system in operation into the coolant circulation coil pipe and delivering cool water from an automatic circulation water tank to a running water channel of the heating pipes so as to effectuate heat exchange, lower the temperature of the coolant of the air conditioning system, and produce hot water repeatedly, thereby enhancing heat exchange and heating efficiency.
- the hot water thus produced returns to the automatic circulation water tank and a hot water canister for supplying hot water to serve household and industrial purposes.
- the present invention dispenses with the need to heat up hot water by means of any other energy resources, so as to recycle waste heat, save energy, and protect the environment.
- FIG. 1 is a schematic view of an energy-saving hot water-heating device according to a preferred embodiment of the present invention
- FIG. 2 is a first schematic perspective view of a system applicable to the energy-saving hot water-heating device according to a preferred embodiment of the present invention
- FIG. 3 is a second schematic perspective view of the system applicable to the energy-saving hot water-heating device according to a preferred embodiment of the present invention
- FIG. 4 is a cross-sectional view of a heating pipe taken along line A-A of FIG. 1 according to a preferred embodiment of the present invention.
- FIG. 5 is a schematic perspective view of a pressure reducing valve according to a preferred embodiment of the present invention.
- an energy-saving hot water-heating device and a system applicable thereto of the present invention are for use in heating-producing hot water, using waste heat generated from an air conditioning system 10 .
- the energy-saving hot water-heating device 1 in a preferred embodiment thereof, comprises a casing 11 , a coolant circulation coil pipe 12 , a plurality of heating pipes 13 , and a plurality of communicating pipes 14 .
- the casing 11 which is hollow is rectangular or of any other shapes.
- the casing 11 accommodates the coolant circulation coil pipe 12 , the heating pipes 13 and the communicating pipes 14 .
- the coolant circulation coil pipe 12 which is curved, is made of metal, preferably a metal of a high thermal conductivity, such as copper, and is essentially disposed in the casing 11 .
- the coolant circulation coil pipe 12 comprises a coolant inlet 121 , a coolant outlet 122 , and a plurality of heat-dissipating pipes 123 .
- the coolant inlet 121 is disposed at one end of the coolant circulation coil pipe 12 .
- the coolant inlet 121 extends out of the casing 11 and communicates with the air conditioning system 10 .
- the coolant outlet 122 is disposed at the other end of the coolant circulation coil pipe 12 .
- the coolant outlet 122 extends out of the casing 11 and communicates with the air conditioning system 10 .
- the heat-dissipating pipes 123 are connected between the coolant inlet 121 and the coolant outlet 122 .
- the heat-dissipating pipes 123 are parallel.
- the heating pipes 13 are water conveying pipes and are of a larger inner diameter than the coolant circulation coil pipe 12 is.
- Each of the heat-dissipating pipes 123 of the coolant circulation coil pipe 12 fits inside a corresponding one of the heating pipes 13 .
- the two ends of each of the heating pipes 13 are closed, such that a running water channel 131 (shown in FIG.
- Each of the communicating pipes 14 is connected between two adjacent ones of the heating pipes 13 , such that the running water channels 131 inside the heating pipes 13 are in communication with each other through the communicating pipes 14 .
- the casing 11 , the coolant circulation coil pipe 12 , the heating pipes 13 , and the communicating pipes 14 of the energy-saving hot water-heating device 1 of the present invention together transfer waste heat generated from the air conditioning system 10 in operation to the coolant circulation coil pipe 12 , introduce room-temperature cool water into the heating pipes 13 , and thus enable heat exchange between the high-temperature coolant and the room-temperature cool water in the energy-saving hot water-heating device 1 .
- the energy-saving hot water-heating device 1 of the present invention lowers the temperature of a coolant in the air conditioning system 10 and circulates the hot water thus produced to thereby optimize heat exchange and enhance heating efficiency.
- the present invention proposes a system applicable to an energy-saving hot water-heating device.
- the energy-saving hot water-heating device 1 further comprises an automatic circulation water tank 2 , a hot water canister 3 , a heating boiler 4 , a water feeding pipeline 5 , a water returning pipeline 6 , and a hot water discharging pipeline 7 .
- the energy-saving hot water-heating device 1 in this preferred embodiment is the same as that in the preceding preferred embodiment and thus is not described hereunder again for the sake of brevity.
- the automatic circulation water tank 2 is for storing water.
- a first pumping motor 21 is disposed at the automatic circulation water tank 2 for drawing water therefrom.
- a controller is disposed at the automatic circulation water tank 2 for operating in conjunction with a temperature sensor 22 for sensing temperature.
- the first pumping motor 21 can be a pumping motor positioned outside the automatic circulation water tank 2 or a submersible motor positioned inside the automatic circulation water tank 2 .
- the temperature sensor 22 is positioned on top of the automatic circulation water tank 2 in a manner that a temperature-sensing probe is inserted into the automatic circulation water tank 2 .
- the hot water canister 3 provides thermal insulation for the stored hot water, and is independent of the automatic circulation water tank 2 .
- a thermally insulating layer can be disposed on the wall of the hot water canister 3 .
- the heating boiler 4 heats up the hot water in the hot water canister 3 .
- the heating boiler 4 and the hot water canister 3 are either integrally formed as a unitary structure (shown in FIG. 2 ) or separate (shown in FIG. 3 ).
- the water feeding pipeline 5 is connected between the water inlet 132 of the energy-saving hot water-heating device 1 and the first pumping motor 21 of the automatic circulation water tank 2 for conveying room-temperature water from the automatic circulation water tank 2 to the running water channel 131 of the energy-saving hot water-heating device 1 through the first pumping motor 21 .
- the water feeding pipeline 5 is equipped with a pressure reducing valve 51 for regulating water pressure.
- the pressure reducing valve 51 is a spherical pressure reducing valve (shown in FIG. 5 ) or the like.
- the water returning pipeline 6 is connected between the automatic circulation water tank 2 and the water outlet 133 of the energy-saving hot water-heating device 1 for sending the hot water produced by the energy-saving hot water-heating device 1 back to the automatic circulation water tank 2 .
- the hot water discharging pipeline 7 is connected between the automatic circulation water tank 2 and the hot water canister 3 and equipped with a second pumping motor 71 .
- the second pumping motor 71 delivers hot water from the automatic circulation water tank 2 to the hot water canister 3 .
- the second pumping motor 71 is connected to the temperature sensor 22 of the automatic circulation water tank 2 .
- the energy-saving hot water-heating device 1 further comprises a temperature sensor 15 .
- the temperature sensor 15 is equipped with a controller and adapted for sensing temperature.
- the temperature sensor 15 is disposed at the coolant circulation coil pipe 12 or the heating pipes 13 and connected to the first pumping motor 21 of the automatic circulation water tank 2 for regulating the speed at which water flows from the automatic circulation water tank 2 to the energy-saving hot water-heating device 1 via the first pumping motor 21 and the water feeding pipeline 5 , such that the energy-saving hot water-heating device 1 is allowed sufficient time to produce hot water.
- a maintenance opening 23 that can be shut and opened as needed and an exhaust vent 24 for relieving pressure are disposed at the top of the automatic circulation water tank 2 .
- the maintenance opening 23 caters for the need for maintenance and cleansing.
- the exhaust vent 24 precludes an elevating pressure that might otherwise be caused by a rising temperature and result in an explosion.
- a drainage hole 25 is disposed at the bottom of the automatic circulation water tank 2 for removing deposited impurities from the automatic circulation water tank 2 and thereby ensuring water quality.
- a pressure reducing valve 61 is disposed at the water returning pipeline 6 for regulating water pressure.
- the pressure reducing valve 61 is a spherical pressure reducing valve (shown in FIG. 5 ) or the like.
- a raw water pipeline 8 has one end in communication with the automatic circulation water tank 2 and has another end in communication with a water source (not shown), such as a utility water pipe, such that raw water can be supplied to the automatic circulation water tank 2 and kept in reserve.
- a water source such as a utility water pipe
- the coolant inlet 121 and the coolant outlet 122 of the coolant circulation coil pipe 12 of the energy-saving hot water-heating device 1 are connected to a coolant pipe disposed on a heat-dissipating side of the air conditioning system 10 (especially suitable for a central air conditioning system).
- a high-temperature coolant produced by the air conditioning system 10 in operation is introduced into the coolant circulation coil pipe 12 and thus circulated therein, thereby allowing the energy-saving hot water-heating device 1 to effectuate heat dissipation.
- a system applicable to an energy-saving hot water-heating device of the present invention will start automatically such that room-temperature cool water will be discharged from the automatic circulation water tank 2 by the first pumping motor 21 and introduced into the running water channel 131 of the heating pipes 13 via the water feeding pipeline 5 .
- the coolant circulation coil pipe 12 and the running water channel 131 have opposite flow directions, there is heat exchange between the high-temperature coolant in the coolant circulation coil pipe 12 and the cool water in the running water channel 131 so as to not only cool down the high-temperature coolant to become a low-temperature coolant but also heat up the cool water to become hot water.
- the present invention enhances heat exchange and heating efficiency.
- the hot water produced by the energy-saving hot water-heating device 1 returns to the automatic circulation water tank 2 via the water returning pipeline 6 .
- the aforesaid cycle repeats until the hot water stored in the automatic circulation water tank 2 reaches a sufficiently high temperature (such as 40 ⁇ 45° C. suitable for showering).
- the hot water can be conveyed by the hot water discharging pipeline 7 and the second pumping motor 71 to the hot water canister 3 and kept in reserve.
- the reserve hot water in the hot water canister 3 can be supplied to users as needed, for example, via a hot water pipeline installed in a building that accommodate the users, or can be delivered to the heating boiler 4 shown in FIG. 3 and further heated up to a higher temperature before being supplied to the users.
- an energy-saving hot water-heating device and a system applicable thereto of the present invention automatically produce hot water for household or industrial purposes without using additional resources (such as electric power). Even though the heating boiler 4 is employed to further heat up the reserve hot water to a higher temperature, the power consumed by the heating boiler 4 is still less than the power required for heating that starts with cool water. Hence, the present invention is effective in recycling waste heat, saving energy, and protecting the environment.
Abstract
Description
- The present invention relates to energy-saving hot water-heating devices and systems applicable thereto, and more particularly, to an energy-saving hot water-heating device and a system applicable thereto which are for use in treating waste heat produced as a result of the operation of an air conditioning system and heating-producing hot water.
- Operation of an air conditioning system involves releasing heat and absorbing heat by the expansion and compression of a coolant, absorbing indoor heat, and discharging the absorbed indoor heat outdoors. The hardware for controlling coolant circulation essentially comprises four components, namely an evaporator, a compressor, a condenser, and a coolant controller. Regarding its working principle, coolant circulation entails turning an outdoor coolant into a high-temperature high-pressure gaseous coolant by the compressor, and then removing heat from the gaseous coolant by the condenser to turn the gaseous coolant into a moderate-temperature high-pressure liquid coolant. Afterward, the coolant controller turns the moderate-temperature high-pressure liquid coolant into a moderate-temperature low-pressure liquid coolant for working at the evaporation temperature of the evaporator. Then, the moderate-temperature low-pressure liquid coolant is conveyed to an indoor environment by a coolant conveying pipe, and in the indoor environment the evaporator absorbs indoor heat to turn the moderate-temperature low-pressure liquid coolant into a gaseous coolant. The gaseous coolant is introduced into the outdoor compressor by the coolant conveying pipe, such that the outdoor compressor turns the gaseous coolant into a high-temperature high-pressure gaseous coolant for circulation.
- The conventional condenser of an air conditioning system resorts to gas cooling and works by blowing the heat out of the air conditioning system by means of a fan and through the heat exchange that takes place between a coolant circulation coil pipe and a fin-like plate. Although heat can be removed by the aforesaid prior art, the heat thus removed contributes to accumulation of heat in a city, thereby exacerbating the greenhouse effect. On the other hand, although a cooling tower is effective in performing a cooling process by means of a cooling liquid, the temperature of the cooling liquid rises gradually because of heat exchange; as a result, it is necessary for a high-temperature cooling liquid to be turned into a mist by a spraying device, and then for cool air to be drawn by an exhaust fan to confront the mist of the cooling liquid undergo heat exchange therewith. Nevertheless, the resultant waste heat ends up being emitted to the atmosphere by the exhaust fan, thereby adding to the greenhouse effect.
- In an attempt to solve the aforesaid problem, a conventional air conditioning system designed to treat waste heat and recycle cool air does overcome the problem with emission of waste heat to the atmosphere and is, in particular, effective in heating-producing hot water by means of a waste heat recovering and hot water producing device as well as lowering the coolant temperature by means of a high-temperature coolant. Nevertheless, the conversion efficiency of the heat exchange device employed by the conventional air conditioning system in heating-producing hot water is too low to enhance the performance of the conventional air conditioning system in waste heat recycling.
- Accordingly, it is imperative to provide an energy-saving hot water-heating device and a system applicable thereto for enhancing the performance of a conventional heat exchange device in heating-producing hot water and effecting waste heat recycling, power saving, and environmental protection.
- In view of the drawbacks of the prior art, the inventor of the present invention conducted extensive researches and experiments according to the inventor's years of experience in the related industry, and finally developed an energy-saving hot water-heating device and a system applicable thereto as disclosed in the present invention to enhance heating efficiency as well as effectuate waste heat recycling, power saving, and environmental protection.
- It is an objective of the present invention to provide an energy-saving hot water-heating device and a system applicable thereto for use in heating-producing hot water by means of waste heat generated from an air conditioning system, lowering the temperature of the coolant of the air conditioning system, enhancing heating efficiency, as well as effectuating waste heat recycling, power saving, and environmental protection.
- In order to achieve the above and other objectives, the present invention provides an energy-saving hot water-heating device for heating-producing hot water from waste heat generated by an air conditioning system, the device comprising a casing, a coolant circulation coil pipe, a plurality of heating pipes, and a plurality of communicating pipes. The coolant circulation coil pipe is made of metal, disposed in the casing, curved, and comprises a coolant inlet, a coolant outlet, and a plurality of heat-dissipating pipes, the coolant inlet extending out of the casing and communicating with the air conditioning system, the coolant outlet extending out of the casing and communicating with the air conditioning system, and the heat-dissipating pipes being connected between the coolant inlet and the coolant outlet. The heating pipes are water conveying pipes and are of a larger inner diameter than the coolant circulation coil pipe is, wherein each of the heat-dissipating pipes of the coolant circulation coil pipe fits inside a corresponding one of the heating pipes, thereby allowing a running water channel to be formed between an inner wall of each of the heating pipes and an outer wall of a corresponding one of the heat-dissipating pipes, wherein one of the heating pipes has a water inlet extending out of the casing, wherein another one of the heating pipes has a water outlet extending out of the casing. The communicating pipes are each connected between two adjacent ones of the heating pipes, such that the running water channels inside the heating pipes are in communication with each other through the communicating pipes.
- In order to achieve the above and other objectives, the present invention provides a system applicable to an energy-saving hot water-heating device. The system, in a preferred embodiment thereof, comprises an energy-saving hot water-heating device, an automatic circulation water tank, a hot water canister, a heating boiler, a water feeding pipeline, a water returning pipeline, and a hot water discharging pipeline. The automatic circulation water tank stores water and has a first pumping motor and a temperature sensor, the first pumping motor drawing water from the automatic circulation water tank, and the temperature sensor having a controller and sensing temperature. The hot water canister provides thermal insulation for the stored hot water, and is independent of the automatic circulation water tank. The heating boiler heats up the hot water in the hot water canister, wherein the heating boiler and the hot water canister are either integrally formed as a unitary structure or separate. The water feeding pipeline is connected between the water inlet of the energy-saving hot water-heating device and the first pumping motor of the automatic circulation water tank for conveying water from the automatic circulation water tank to a running water channel of the energy-saving hot water-heating device through the first pumping motor, wherein a pressure reducing valve is disposed at the water feeding pipeline for regulating water pressure. The water returning pipeline is connected between the automatic circulation water tank and a water outlet of the energy-saving hot water-heating device for sending the hot water produced by the energy-saving hot water-heating device back to the automatic circulation water tank. The hot water discharging pipeline is connected between the automatic circulation water tank and the hot water canister and equipped with a second pumping motor adapted for delivering hot water from the automatic circulation water tank to the hot water canister and connected to the temperature sensor of the automatic circulation water tank.
- In a preferred embodiment, the energy-saving hot water-heating device further comprises a temperature sensor equipped with a controller, adapted for sensing temperature, disposed at the coolant circulation coil pipe, and connected to the first pumping motor of the automatic circulation water tank.
- In a preferred embodiment of the system applicable to the energy-saving hot water-heating device, a maintenance opening capable of being shut and opened is disposed at the automatic circulation water tank.
- In a preferred embodiment of the system applicable to the energy-saving hot water-heating device, a drainage hole is disposed at a bottom of the automatic circulation water tank for removing impurities.
- In a preferred embodiment of the system applicable to the energy-saving hot water-heating device, an exhaust vent is disposed at a top of the automatic circulation water tank for relieving pressure.
- In a preferred embodiment, the system applicable to the energy-saving hot water-heating device further comprises a raw water pipeline in communication with the automatic circulation water tank.
- In a preferred embodiment of the system applicable to the energy-saving hot water-heating device, a pressure reducing valve is disposed at the water returning pipeline for regulating water pressure.
- In a preferred embodiment of the system applicable to the energy-saving hot water-heating device, the pressure reducing valve is a spherical pressure reducing valve.
- Accordingly, the present invention provides an energy-saving hot water-heating device and a system applicable thereto, such that a coolant inlet and a coolant outlet of a coolant circulation coil pipe are connected to a coolant pipe of an air conditioning system for introducing waste heat generated by the air conditioning system in operation into the coolant circulation coil pipe and delivering cool water from an automatic circulation water tank to a running water channel of the heating pipes so as to effectuate heat exchange, lower the temperature of the coolant of the air conditioning system, and produce hot water repeatedly, thereby enhancing heat exchange and heating efficiency. Afterward, the hot water thus produced returns to the automatic circulation water tank and a hot water canister for supplying hot water to serve household and industrial purposes. In doing so, the present invention dispenses with the need to heat up hot water by means of any other energy resources, so as to recycle waste heat, save energy, and protect the environment.
- Objectives, features, and advantages of the present invention are hereunder illustrated with specific embodiments in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a schematic view of an energy-saving hot water-heating device according to a preferred embodiment of the present invention; -
FIG. 2 is a first schematic perspective view of a system applicable to the energy-saving hot water-heating device according to a preferred embodiment of the present invention; -
FIG. 3 is a second schematic perspective view of the system applicable to the energy-saving hot water-heating device according to a preferred embodiment of the present invention; -
FIG. 4 is a cross-sectional view of a heating pipe taken along line A-A ofFIG. 1 according to a preferred embodiment of the present invention; and -
FIG. 5 is a schematic perspective view of a pressure reducing valve according to a preferred embodiment of the present invention. - As shown in
FIG. 1 ,FIG. 2 , andFIG. 4 , an energy-saving hot water-heating device and a system applicable thereto of the present invention are for use in heating-producing hot water, using waste heat generated from anair conditioning system 10. The energy-saving hot water-heating device 1, in a preferred embodiment thereof, comprises acasing 11, a coolantcirculation coil pipe 12, a plurality ofheating pipes 13, and a plurality of communicatingpipes 14. - The
casing 11 which is hollow is rectangular or of any other shapes. Thecasing 11 accommodates the coolantcirculation coil pipe 12, theheating pipes 13 and the communicatingpipes 14. The coolantcirculation coil pipe 12, which is curved, is made of metal, preferably a metal of a high thermal conductivity, such as copper, and is essentially disposed in thecasing 11. The coolantcirculation coil pipe 12 comprises acoolant inlet 121, acoolant outlet 122, and a plurality of heat-dissipating pipes 123. Thecoolant inlet 121 is disposed at one end of the coolantcirculation coil pipe 12. Thecoolant inlet 121 extends out of thecasing 11 and communicates with theair conditioning system 10. Thecoolant outlet 122 is disposed at the other end of the coolantcirculation coil pipe 12. Thecoolant outlet 122 extends out of thecasing 11 and communicates with theair conditioning system 10. The heat-dissipating pipes 123 are connected between thecoolant inlet 121 and thecoolant outlet 122. The heat-dissipating pipes 123 are parallel. Theheating pipes 13 are water conveying pipes and are of a larger inner diameter than the coolantcirculation coil pipe 12 is. Each of the heat-dissipating pipes 123 of the coolantcirculation coil pipe 12 fits inside a corresponding one of theheating pipes 13. The two ends of each of theheating pipes 13 are closed, such that a running water channel 131 (shown inFIG. 4 ) is formed between the inner wall of each of theheating pipes 13 and the outer wall of a corresponding one of the heat-dissipating pipes 123. One of theheating pipes 13 has awater inlet 132 extending out of thecasing 11. Another one of theheating pipes 13 has awater outlet 133 extending out of thecasing 11. Thewater inlet 132 is positioned proximate to thecoolant outlet 122, and thewater outlet 133 is positioned proximate to thecoolant inlet 121, such that the coolantcirculation coil pipe 12 and the runningwater channel 131 have opposite flow directions. Each of the communicatingpipes 14 is connected between two adjacent ones of theheating pipes 13, such that the runningwater channels 131 inside theheating pipes 13 are in communication with each other through the communicatingpipes 14. - The
casing 11, the coolantcirculation coil pipe 12, theheating pipes 13, and the communicatingpipes 14 of the energy-saving hot water-heating device 1 of the present invention together transfer waste heat generated from theair conditioning system 10 in operation to the coolantcirculation coil pipe 12, introduce room-temperature cool water into theheating pipes 13, and thus enable heat exchange between the high-temperature coolant and the room-temperature cool water in the energy-saving hot water-heating device 1. Hence, the energy-saving hot water-heating device 1 of the present invention lowers the temperature of a coolant in theair conditioning system 10 and circulates the hot water thus produced to thereby optimize heat exchange and enhance heating efficiency. - As shown in
FIG. 2 andFIG. 3 , to optimize the energy-saving hot water-heating device 1 in producing usable hot water, the present invention proposes a system applicable to an energy-saving hot water-heating device. In a preferred embodiment, the energy-saving hot water-heating device 1 further comprises an automaticcirculation water tank 2, ahot water canister 3, aheating boiler 4, awater feeding pipeline 5, awater returning pipeline 6, and a hotwater discharging pipeline 7. - The energy-saving hot water-
heating device 1 in this preferred embodiment is the same as that in the preceding preferred embodiment and thus is not described hereunder again for the sake of brevity. The automaticcirculation water tank 2 is for storing water. Afirst pumping motor 21 is disposed at the automaticcirculation water tank 2 for drawing water therefrom. A controller is disposed at the automaticcirculation water tank 2 for operating in conjunction with atemperature sensor 22 for sensing temperature. Thefirst pumping motor 21 can be a pumping motor positioned outside the automaticcirculation water tank 2 or a submersible motor positioned inside the automaticcirculation water tank 2. Thetemperature sensor 22 is positioned on top of the automaticcirculation water tank 2 in a manner that a temperature-sensing probe is inserted into the automaticcirculation water tank 2. Thehot water canister 3 provides thermal insulation for the stored hot water, and is independent of the automaticcirculation water tank 2. A thermally insulating layer can be disposed on the wall of thehot water canister 3. Theheating boiler 4 heats up the hot water in thehot water canister 3. Theheating boiler 4 and thehot water canister 3 are either integrally formed as a unitary structure (shown inFIG. 2 ) or separate (shown inFIG. 3 ). Thewater feeding pipeline 5 is connected between thewater inlet 132 of the energy-saving hot water-heating device 1 and thefirst pumping motor 21 of the automaticcirculation water tank 2 for conveying room-temperature water from the automaticcirculation water tank 2 to the runningwater channel 131 of the energy-saving hot water-heating device 1 through thefirst pumping motor 21. Thewater feeding pipeline 5 is equipped with apressure reducing valve 51 for regulating water pressure. Thepressure reducing valve 51 is a spherical pressure reducing valve (shown inFIG. 5 ) or the like. Thewater returning pipeline 6 is connected between the automaticcirculation water tank 2 and thewater outlet 133 of the energy-saving hot water-heating device 1 for sending the hot water produced by the energy-saving hot water-heating device 1 back to the automaticcirculation water tank 2. The hotwater discharging pipeline 7 is connected between the automaticcirculation water tank 2 and thehot water canister 3 and equipped with asecond pumping motor 71. Thesecond pumping motor 71 delivers hot water from the automaticcirculation water tank 2 to thehot water canister 3. Thesecond pumping motor 71 is connected to thetemperature sensor 22 of the automaticcirculation water tank 2. - As shown in
FIG. 1 andFIG. 2 , in a preferred embodiment of the present invention, the energy-saving hot water-heating device 1 further comprises atemperature sensor 15. Thetemperature sensor 15 is equipped with a controller and adapted for sensing temperature. Thetemperature sensor 15 is disposed at the coolantcirculation coil pipe 12 or theheating pipes 13 and connected to thefirst pumping motor 21 of the automaticcirculation water tank 2 for regulating the speed at which water flows from the automaticcirculation water tank 2 to the energy-saving hot water-heating device 1 via thefirst pumping motor 21 and thewater feeding pipeline 5, such that the energy-saving hot water-heating device 1 is allowed sufficient time to produce hot water. - As shown in
FIG. 2 andFIG. 3 , in a preferred embodiment of the present invention, amaintenance opening 23 that can be shut and opened as needed and anexhaust vent 24 for relieving pressure are disposed at the top of the automaticcirculation water tank 2. Themaintenance opening 23 caters for the need for maintenance and cleansing. Theexhaust vent 24 precludes an elevating pressure that might otherwise be caused by a rising temperature and result in an explosion. Adrainage hole 25 is disposed at the bottom of the automaticcirculation water tank 2 for removing deposited impurities from the automaticcirculation water tank 2 and thereby ensuring water quality. Apressure reducing valve 61 is disposed at thewater returning pipeline 6 for regulating water pressure. Thepressure reducing valve 61 is a spherical pressure reducing valve (shown inFIG. 5 ) or the like. - As shown in
FIG. 2 andFIG. 3 , in a preferred embodiment of the present invention, araw water pipeline 8 has one end in communication with the automaticcirculation water tank 2 and has another end in communication with a water source (not shown), such as a utility water pipe, such that raw water can be supplied to the automaticcirculation water tank 2 and kept in reserve. - As shown in
FIG. 2 andFIG. 3 , in a preferred embodiment of the present invention, to put an energy-saving hot water-heating device and a system applicable thereto in use, it is necessary that thecoolant inlet 121 and thecoolant outlet 122 of the coolantcirculation coil pipe 12 of the energy-saving hot water-heating device 1 are connected to a coolant pipe disposed on a heat-dissipating side of the air conditioning system 10 (especially suitable for a central air conditioning system). In doing so, a high-temperature coolant produced by theair conditioning system 10 in operation is introduced into the coolantcirculation coil pipe 12 and thus circulated therein, thereby allowing the energy-saving hot water-heating device 1 to effectuate heat dissipation. Hence, once the user starts theair conditioning system 10, a system applicable to an energy-saving hot water-heating device of the present invention will start automatically such that room-temperature cool water will be discharged from the automaticcirculation water tank 2 by thefirst pumping motor 21 and introduced into the runningwater channel 131 of theheating pipes 13 via thewater feeding pipeline 5. Since the coolantcirculation coil pipe 12 and the runningwater channel 131 have opposite flow directions, there is heat exchange between the high-temperature coolant in the coolantcirculation coil pipe 12 and the cool water in the runningwater channel 131 so as to not only cool down the high-temperature coolant to become a low-temperature coolant but also heat up the cool water to become hot water. Hence, the present invention enhances heat exchange and heating efficiency. - As shown in
FIG. 2 andFIG. 3 , the hot water produced by the energy-saving hot water-heating device 1 returns to the automaticcirculation water tank 2 via thewater returning pipeline 6. The aforesaid cycle repeats until the hot water stored in the automaticcirculation water tank 2 reaches a sufficiently high temperature (such as 40˜45° C. suitable for showering). Afterward, the hot water can be conveyed by the hotwater discharging pipeline 7 and thesecond pumping motor 71 to thehot water canister 3 and kept in reserve. The reserve hot water in thehot water canister 3 can be supplied to users as needed, for example, via a hot water pipeline installed in a building that accommodate the users, or can be delivered to theheating boiler 4 shown inFIG. 3 and further heated up to a higher temperature before being supplied to the users. - Hence, an energy-saving hot water-heating device and a system applicable thereto of the present invention automatically produce hot water for household or industrial purposes without using additional resources (such as electric power). Even though the
heating boiler 4 is employed to further heat up the reserve hot water to a higher temperature, the power consumed by theheating boiler 4 is still less than the power required for heating that starts with cool water. Hence, the present invention is effective in recycling waste heat, saving energy, and protecting the environment. - The present invention is disclosed above by preferred embodiments. However, persons skilled in the art should understand that the preferred embodiments are illustrative of the present invention only, but should not be interpreted as restrictive of the scope of the present invention. Hence, all equivalent modifications and replacements made to the aforesaid embodiments should fall within the scope of the present invention. Accordingly, the legal protection for the present invention should be defined by the appended claims.
Claims (10)
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US13/191,710 US20130025309A1 (en) | 2011-07-27 | 2011-07-27 | Energy-saving hot water-heating device and system applicable to the same |
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US13/191,710 US20130025309A1 (en) | 2011-07-27 | 2011-07-27 | Energy-saving hot water-heating device and system applicable to the same |
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US13/191,710 Abandoned US20130025309A1 (en) | 2011-07-27 | 2011-07-27 | Energy-saving hot water-heating device and system applicable to the same |
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CN104062988A (en) * | 2013-03-20 | 2014-09-24 | 金华市恒飞电工材料有限公司 | Automatic temperature control device for waste heat recycle and bath solution concentrated heating |
CN105078245A (en) * | 2015-08-25 | 2015-11-25 | 佛山市顺德区畅联万方科技管理有限公司 | Flowing heating type warm and boiled water device |
DK178562B1 (en) * | 2015-03-05 | 2016-06-27 | Fredericia Spildevand Og Energi As | Heat exchanger for heating viscous sludge |
CN108608931A (en) * | 2018-07-06 | 2018-10-02 | 云南力帆骏马车辆有限公司 | Caravan hot-water heating system and caravan |
CN109032204A (en) * | 2018-05-31 | 2018-12-18 | 安徽沃屹智能装备有限公司 | A kind of testboard cooling water control system |
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CN114530645A (en) * | 2022-01-19 | 2022-05-24 | 广州东力科技有限公司 | Air-cooled alternating-current variable-frequency parallel system |
WO2022160882A1 (en) * | 2021-01-26 | 2022-08-04 | 深圳市米惜智能电器科技有限公司 | Warm boiled water machine able to perform precise temperature adjustment, and milk brewing machine |
USD969847S1 (en) | 2018-05-18 | 2022-11-15 | Carefusion 303, Inc. | Display screen with graphical user interface for an infusion device |
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CN104062988A (en) * | 2013-03-20 | 2014-09-24 | 金华市恒飞电工材料有限公司 | Automatic temperature control device for waste heat recycle and bath solution concentrated heating |
DK178562B1 (en) * | 2015-03-05 | 2016-06-27 | Fredericia Spildevand Og Energi As | Heat exchanger for heating viscous sludge |
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CN113500891A (en) * | 2021-07-05 | 2021-10-15 | 徐州天一红点车用空调有限公司 | Energy-saving new forms of energy air conditioner for engineering vehicle |
CN114530645A (en) * | 2022-01-19 | 2022-05-24 | 广州东力科技有限公司 | Air-cooled alternating-current variable-frequency parallel system |
CN115682645A (en) * | 2022-11-10 | 2023-02-03 | 浙江同景冻干科技有限公司 | Freeze-drying equipment of contact heating |
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