CN114017838A - Multi-energy complementary clean heat supply system - Google Patents

Multi-energy complementary clean heat supply system Download PDF

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Publication number
CN114017838A
CN114017838A CN202111533756.9A CN202111533756A CN114017838A CN 114017838 A CN114017838 A CN 114017838A CN 202111533756 A CN202111533756 A CN 202111533756A CN 114017838 A CN114017838 A CN 114017838A
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CN
China
Prior art keywords
heat
energy
heat storage
storage device
solar
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Pending
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CN202111533756.9A
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Chinese (zh)
Inventor
王会
钟迪
黄永琪
彭烁
周贤
安航
白烨
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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Priority to CN202111533756.9A priority Critical patent/CN114017838A/en
Publication of CN114017838A publication Critical patent/CN114017838A/en
Pending legal-status Critical Current

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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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • 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
    • F24D12/00—Other central heating systems
    • F24D12/02—Other central heating systems having more than one heat source
    • 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
    • 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
    • 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
    • F24D2200/08—Electric heater
    • 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
    • F24D2200/14—Solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
    • 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
    • Y02B10/40—Geothermal heat-pumps
    • 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]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a multi-energy complementary clean heat supply system, which comprises: the solar heat collector is used for converting the radiation energy of the sun into heat energy; the geothermal source heat pump is used for converting geothermal energy into heat energy; the power supply input end of the electric heating equipment is selectively communicated with the power supply, and the electric heating equipment is used for providing heat energy for the heat load; the heat energy output end of the solar heat collector and the heat energy output end of the geothermal source heat pump are communicated with the heat energy input end of the heat storage system, and the heat energy output end of the heat storage system is communicated with the heat energy input end of the heat load. The solar energy and the geothermal energy are used as daily heat supply energy sources, so that the proportion of renewable clean energy sources in a heat supply system is improved, and meanwhile, the electric energy is used as emergency heat supply energy sources to deal with sudden events with rapidly increased heat supply demands, so that the heat supply stability is improved. In addition, the invention utilizes the off-peak electricity to heat, thereby improving the utilization rate of the off-peak electricity.

Description

Multi-energy complementary clean heat supply system
Technical Field
The invention relates to the field of heating systems, in particular to a multi-energy complementary clean heating system.
Background
Heat supply is an important civil guarantee related to the whole northern area of China. In northern areas of China, a heat supply mode mainly using clean coal central heat supply, using natural gas heat supply as an auxiliary and using other heat sources for supplement is mainly adopted. Because renewable energy sources have the defects of wide distribution, low density and poor stability, the heating energy source structure in China still takes coal as a main energy source, and the proportion of the renewable energy sources is still very small. After the double-carbon target is provided, heat supply in northern areas is further developed towards the direction of cleaning and low carbon.
Therefore, how to increase the proportion of renewable energy in the heating system and ensure stable heating is a key problem to be urgently solved by those skilled in the art.
Disclosure of Invention
The aim of the invention is to increase the proportion of renewable energy in the heating system, while ensuring stable heating. In order to achieve the purpose, the invention provides the following technical scheme:
a multi-energy complementary clean heat supply system comprising:
a solar heat collector for converting radiant energy of the sun into thermal energy;
the geothermal source heat pump is used for converting geothermal energy into heat energy;
the power supply input end of the electric heating equipment is selectively communicated with a power supply, and the electric heating equipment is used for providing heat energy for a heat load;
and the heat energy output end of the solar heat collector and the heat energy output end of the geothermal source heat pump are communicated with the heat energy input end of the heat storage system, and the heat energy output end of the heat storage system is communicated with the heat energy input end of the heat load.
Preferably, the heat storage system comprises a phase-change heat storage device, and the heat energy output end of the solar heat collector and the heat energy output end of the geothermal source heat pump are both communicated with the heat energy input end of the phase-change heat storage device.
Preferably, the phase-change heat storage device includes at least one heat storage medium of a crystalline hydrated salt and a molten salt.
Preferably, the heat storage system further comprises a thermochemical heat storage device, and a heat energy output end of the electric heating device is communicated with a heat energy input end of the thermochemical heat storage device; when the power supply is off-peak electricity, the power input end of the electric heating equipment is communicated with the power supply.
Preferably, the electric heating equipment is in communication connection with a starting controller, and when the power supply is off-peak electricity, the starting controller controls the power input end of the electric heating equipment to be conducted with the power supply.
Preferably, the thermochemical heat storage device comprises at least one heat storage medium of metal carbonate, metal hydroxide and metal oxide.
Preferably, a first heat exchange pipeline is arranged between the electric heating equipment and the thermochemical heat storage device, the first heat exchange pipeline is a closed-loop pipeline, a first heat exchange medium circulates in the first heat exchange pipeline, and the first heat exchange medium absorbs heat in the electric heating equipment and transfers the absorbed heat to a heat storage medium in the thermochemical heat storage device.
Preferably, the solar heat collector further comprises a solar heat pump, and the heat energy output end of the solar heat collector is communicated with the heat energy input end of the phase-change heat storage device through the solar heat pump.
Preferably, a second heat exchange pipeline is arranged between the solar heat pump and the phase-change heat storage device, the second heat exchange pipeline is a closed-loop pipeline, a second heat exchange medium circulates in the second heat exchange pipeline, and the second heat exchange medium absorbs heat of the solar heat pump and transfers the absorbed heat to the heat storage medium in the phase-change heat storage device.
Preferably, a third heat exchange pipeline is arranged between the geothermal heat source heat pump and the phase change heat storage device, the third heat exchange pipeline is a closed-loop pipeline, a third heat exchange medium circulates in the third heat exchange pipeline, and the third heat exchange medium absorbs heat of the geothermal heat source heat pump and transfers the absorbed heat to the heat storage medium in the phase change heat storage device.
According to the technical scheme, the multi-energy complementary clean heating system has the following advantages:
firstly, solar energy and geothermal energy are used as daily heat supply energy sources, so that the proportion of renewable clean energy sources in a heat supply system is improved, and meanwhile, electric energy is used as emergency heat supply energy sources to deal with sudden events with sharply increased heat supply demands, so that the heat supply stability is improved.
Second, solar energy and geothermal energy are stored in the phase-change heat storage device, thereby converting unstable energy into stable heat energy to ensure stable heat supply.
Thirdly, the low-ebb electricity is used for heating, so that the utilization rate of the low-ebb electricity is improved, and peak clipping and valley filling are facilitated.
Fourthly, the thermochemical heat storage device is used for storing the heat energy prepared by the electric heating equipment, the heat storage period of the thermochemical heat storage device is long, and seasonal heat storage can be realized so as to be beneficial to emergency heat supply.
Fifth, the multifunctional complementary clean heating system of the invention has simple principle and convenient implementation, and can utilize renewable energy according to local conditions.
Drawings
In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a multi-energy complementary cleaning and heating system according to an embodiment of the present invention.
Wherein, 1 is an electric heating device, 2 is a solar heat collector, 3 is a solar heat pump, 4 is a geothermal heat pump, 5 is a heat storage system, 6 is a thermochemical heat storage device, and 7 is a phase change heat storage device.
Detailed Description
The invention discloses a multi-energy complementary clean heating system, wherein renewable energy sources in the heating system have a large proportion, and the heating system can ensure stable heating.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a multi-energy complementary clean heat supply system, which comprises: a solar heat collector 2, a ground heat source heat pump 4, an electric heating device 1 and a heat storage system 5. The solar heat collector 2 is used for converting solar radiation energy into heat energy, the heat energy output end of the solar heat collector 2 is communicated with the heat energy input end of the heat storage system 5, and the heat energy prepared by the solar heat collector 2 can flow into the heat storage system 5 to be stored. The geothermal heat pump 4 is used for converting geothermal energy into heat energy, the heat energy output end of the geothermal heat pump 4 is communicated with the heat energy input end of the heat storage system 5, and the heat energy prepared by the geothermal heat pump 4 flows into the heat storage system 5 to be stored. The heat energy output end of the heat storage system 5 is communicated with the heat energy input end of the heat load, and the heat energy stored in the heat storage system 5 can finally flow into the heat load. The power input end of the electric heating apparatus 1 is selectively communicated with the power supply, and after the power input end of the electric heating apparatus 1 is communicated with the power supply, the electric heating apparatus 1 converts electric energy into heat energy, and the heat energy finally flows into the heat load.
Solar energy and geothermal energy are both renewable clean energy sources. The solar energy and the geothermal energy are used as daily heat supply energy sources, so that the proportion of renewable clean energy sources in a heat supply system is improved. In addition, the invention also provides an electric heating device 1 as an emergency heating energy source based on the consideration of stable heating. The emergency heating energy refers to heating energy which is started only when an emergency event that the heating demand is increased sharply occurs. The mode of combining the daily heat supply energy and the emergency heat supply energy in the invention effectively ensures the stability of heat supply.
It should be noted that, because both solar energy and geothermal energy have the disadvantage of poor stability, the present invention does not directly utilize solar energy and geothermal energy to supply heat, but first stores the heat energy generated by solar energy and geothermal energy in the heat storage system 5, so that the solar energy and geothermal energy are changed into stable heat energy, and then supplies heat to the heat load, thus further improving the stability of heat supply.
The heat storage system 5 comprises a phase-change heat storage device 7, and a heat energy output end of the solar heat collector 2 and a heat energy output end of the geothermal source heat pump 4 are both communicated with a heat energy input end of the phase-change heat storage device 7. Because solar energy and geothermal energy are daily heating energy sources, the phase-change heat storage device 7 with short heat storage period is used for storing the heat energy generated by the solar heat collector and the geothermal source heat pump 4. The phase change heat storage device 7 includes at least one heat storage medium of a crystalline hydrated salt and a molten salt. That is, the heat storage medium in the phase change heat storage device 7 may be a crystalline hydrated salt or a molten salt. In addition, two different chambers can be arranged in the phase-change heat storage device 7, and the two chambers are respectively used for containing crystalline hydrate salt and fused salt.
The heating principle of the electric heating apparatus 1 will be described next. The electric heating apparatus 1 is powered by an electric power supply. Those skilled in the art will appreciate that the user's power usage is relatively large during the daytime and relatively small during the nighttime. Those skilled in the art refer to the power supply source with a small amount of power used at night as off-peak power. The present invention preferably uses off-peak electricity to power the electric heating apparatus 1 in consideration of peak clipping and valley filling. When the electricity is in the valley, the power input end of the electric heating device 1 is communicated with the power supply, and the electric heating device 1 starts to heat. The heat energy output end of the electric heating equipment 1 is communicated with the heat energy input end of the thermochemistry heat storage device 6. That is, the electric heating apparatus 1 converts the valley electricity into thermal energy, which is stored in the thermochemical heat storage device 6.
The electric heating equipment 1 is an emergency heat supply energy source, and the heat energy produced by the electric heating equipment 1 is started only when an emergency event that the heat supply demand is increased sharply occurs, so that the thermochemical heat storage device 6 with a long heat storage period is used for storing the heat energy produced by the off-peak electricity.
At off-peak electricity, the electric heating apparatus 1 converts the off-peak electricity into thermal energy, which is stored in the thermochemical heat storage 6. In daily heating, heat is supplied to a heat load by the phase change heat storage device 7. In the event of an emergency with a rapidly increasing heat demand, heat is supplied to the thermal load by the phase change heat storage device 7 and the thermochemical heat storage device 6 together. Thus, stable heat supply can be ensured.
In order to improve the intelligent heating of the electric heating equipment 1, the invention is also provided with a starting controller which is in communication connection with the electric heating equipment 1. When the power supply is off-peak electricity, the starting controller controls the power input end of the electric heating device 1 to be communicated with the power supply so that the electric heating device 1 starts to heat.
Further, it is possible to detect whether the power supply source is off-peak power by providing a detector. The detector collects the power consumption of the user, the power consumption of the user is transmitted to the starting controller, when the starting controller judges that the power consumption of the user is lower than the preset power consumption, the power supply at the moment is indicated to be off-peak electricity, and then the starting controller controls the power input end of the electric heating equipment 1 to be conducted with the power supply, so that the electric heating equipment 1 starts to heat.
The thermochemical heat storage device 6 comprises at least one heat storage medium of metal carbonate, metal hydroxide and metal oxide. That is, the heat storage medium in the thermochemical heat storage device 6 may be metal carbonate, metal hydroxide, or metal oxide. In addition, two or three different chambers can be arranged in the thermochemical heat storage device 6, and different heat storage media can be contained in the different chambers.
A first heat exchange pipeline is arranged between the electric heating equipment 1 and the thermochemical heat storage device 6, the first heat exchange pipeline is a closed loop pipeline, and a first heat exchange medium circulates in the first heat exchange pipeline. The first heat exchange medium absorbs heat in the electric heating apparatus 1 and transfers the absorbed heat to the heat storage medium in the thermochemical heat storage device 6.
The heating principle of solar and geothermal energy is now explained: the solar heat pump 3 is arranged between the solar heat collector 2 and the phase-change heat storage device 7. The heat energy output end of the solar heat collector 2 is communicated with the heat energy input end of the solar heat pump 3, and the heat energy output end of the solar heat pump 3 is communicated with the heat energy input end of the phase-change heat storage device 7. The solar collector 2 collects solar energy and converts the solar energy into heat energy. The solar heat pump 3 converts the thermal energy generated by the solar collector 2 into high-quality thermal energy, which is stored in the thermo-chemical heat storage device 6.
A second heat exchange pipeline is arranged between the solar heat pump 3 and the phase change heat storage device 7, the second heat exchange pipeline is a closed loop pipeline, and a second heat exchange medium circulates in the second heat exchange pipeline. The second heat exchange medium absorbs heat of the solar heat pump 3 and transfers the absorbed heat to the heat storage medium in the phase-change heat storage device 7.
The geothermal source heat pump 4 includes a horizontal ground source heat pump, a vertical ground source heat pump, a surface water type ground source heat pump, an underground water type ground source heat pump, and the like. And a third heat exchange pipeline is arranged between the geothermal source heat pump 4 and the phase change heat storage device 7, the third heat exchange pipeline is a closed-loop pipeline, and a third heat exchange medium circulates in the third heat exchange pipeline. The third heat exchange medium absorbs heat of the ground heat source heat pump 4 and transfers the absorbed heat to the heat storage medium in the phase change heat storage device 7.
In summary, the multi-energy complementary cleaning and heating system of the present invention has the following advantages:
firstly, solar energy and geothermal energy are used as daily heat supply energy sources, so that the proportion of renewable clean energy sources in a heat supply system is improved, and meanwhile, electric energy is used as emergency heat supply energy sources to deal with sudden events with sharply increased heat supply demands, so that the heat supply stability is improved.
Second, solar energy and geothermal energy are stored in the phase-change heat storage device 7, thereby converting unstable energy into stable heat energy to ensure stable heat supply.
Thirdly, the low-ebb electricity is used for heating, so that the utilization rate of the low-ebb electricity is improved, and peak clipping and valley filling are facilitated.
Fourthly, the thermal energy prepared by the electric heating equipment 1 is stored by the thermochemical heat storage device 6, the heat storage period of the thermochemical heat storage device 6 is long, and seasonal heat storage can be realized so as to be beneficial to emergency heat supply.
Fifth, the multifunctional complementary clean heating system of the invention has simple principle and convenient implementation, and can utilize renewable energy according to local conditions.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A multi-energy complementary clean heat supply system, comprising:
a solar heat collector for converting radiant energy of the sun into thermal energy;
the geothermal source heat pump is used for converting geothermal energy into heat energy;
the power supply input end of the electric heating equipment is selectively communicated with a power supply, and the electric heating equipment is used for providing heat energy for a heat load;
and the heat energy output end of the solar heat collector and the heat energy output end of the geothermal source heat pump are communicated with the heat energy input end of the heat storage system, and the heat energy output end of the heat storage system is communicated with the heat energy input end of the heat load.
2. The multi-energy complementary clean heating system of claim 1, wherein the heat storage system comprises a phase-change heat storage device, and the heat energy output end of the solar heat collector and the heat energy output end of the geothermal source heat pump are both in communication with the heat energy input end of the phase-change heat storage device.
3. The multi-energy complementary clean heat supply system of claim 2, wherein the phase change heat storage device comprises at least one heat storage medium of a crystalline hydrated salt and a molten salt.
4. The multi-energy complementary clean heat supply system of claim 1, wherein the heat storage system further comprises a thermochemical heat storage device, the thermal energy output of the electrical heating apparatus being in communication with the thermal energy input of the thermochemical heat storage device; when the power supply is off-peak electricity, the power input end of the electric heating equipment is communicated with the power supply.
5. The multi-energy complementary clean heating system of claim 4, wherein the electric heating device is communicatively connected to a start-up controller, and the start-up controller controls a power input of the electric heating device to be conducted with the power supply when the power supply is off-peak power.
6. The multi-energy complementary clean heat supply system of claim 4, wherein the thermochemical heat storage device comprises at least one heat storage medium selected from metal carbonates, metal hydroxides, and metal oxides.
7. The multi-energy complementary clean heat supply system according to claim 4, wherein a first heat exchange pipeline is arranged between the electric heating device and the thermochemical heat storage device, the first heat exchange pipeline is a closed loop pipeline, a first heat exchange medium circulates in the first heat exchange pipeline, and the first heat exchange medium absorbs heat in the electric heating device and transfers the absorbed heat to the heat storage medium in the thermochemical heat storage device.
8. The multi-energy complementary clean heating system of claim 2, further comprising a solar heat pump, wherein the thermal energy output end of the solar heat collector is communicated with the thermal energy input end of the phase-change heat storage device through the solar heat pump.
9. The multi-energy complementary clean heating system according to claim 8, wherein a second heat exchange pipeline is arranged between the solar heat pump and the phase-change heat storage device, the second heat exchange pipeline is a closed-loop pipeline, a second heat exchange medium circulates in the second heat exchange pipeline, and the second heat exchange medium absorbs heat of the solar heat pump and transfers the absorbed heat to the heat storage medium in the phase-change heat storage device.
10. The multi-energy complementary clean heating system according to claim 2, wherein a third heat exchange pipeline is arranged between the geothermal source heat pump and the phase-change heat storage device, the third heat exchange pipeline is a closed-loop pipeline, a third heat exchange medium circulates in the third heat exchange pipeline, and the third heat exchange medium absorbs heat of the geothermal source heat pump and transfers the absorbed heat to the heat storage medium in the phase-change heat storage device.
CN202111533756.9A 2021-12-15 2021-12-15 Multi-energy complementary clean heat supply system Pending CN114017838A (en)

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CN202111533756.9A CN114017838A (en) 2021-12-15 2021-12-15 Multi-energy complementary clean heat supply system

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Application Number Priority Date Filing Date Title
CN202111533756.9A CN114017838A (en) 2021-12-15 2021-12-15 Multi-energy complementary clean heat supply system

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Publication Number Publication Date
CN114017838A true CN114017838A (en) 2022-02-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115823750A (en) * 2022-10-24 2023-03-21 国电投重庆能源研究院有限公司 Heat storage and supply system utilizing composite energy and operation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115823750A (en) * 2022-10-24 2023-03-21 国电投重庆能源研究院有限公司 Heat storage and supply system utilizing composite energy and operation method thereof
CN115823750B (en) * 2022-10-24 2023-10-27 国电投重庆能源研究院有限公司 Heat storage and supply system utilizing composite energy and operation method thereof

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