CN107289494A - Central heating system based on distributed heating heat-storage technology - Google Patents

Central heating system based on distributed heating heat-storage technology Download PDF

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Publication number
CN107289494A
CN107289494A CN201610230337.0A CN201610230337A CN107289494A CN 107289494 A CN107289494 A CN 107289494A CN 201610230337 A CN201610230337 A CN 201610230337A CN 107289494 A CN107289494 A CN 107289494A
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CN
China
Prior art keywords
heat
heating
regenerative apparatus
high temperature
heat transfer
Prior art date
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Pending
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CN201610230337.0A
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Chinese (zh)
Inventor
俞铁铭
韩磊
阮炯明
周宇昊
阮慧锋
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Huadian Electric Power Research Institute Co Ltd
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Huadian Electric Power Research Institute Co Ltd
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Priority to CN201610230337.0A priority Critical patent/CN107289494A/en
Publication of CN107289494A publication Critical patent/CN107289494A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00Central heating systems using heat accumulated in storage masses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D12/00Other central heating systems
    • F24D12/02Other central heating systems having more than one heat source
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1096Arrangement or mounting of control or safety devices for electric heating systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]

Abstract

The present invention relates to a kind of central heating system based on distributed heating heat-storage technology, including the composition such as solar energy high temperature collecting system, regenerative apparatus, heat exchanger, control system, central heating network includes solar thermal collection system and phase-transition heat-storage system;Solar thermal collection system absorbs steam in solar energy heating pipe network and meets user's request, phase-transition heat-storage system has two kinds of operational modes of high temperature heat conductive oil accumulation of heat and electrical heating accumulation of heat, when solar thermal collection system heat is rich, control valve makes conduction oil flow through phase transition heat accumulation unit, and carrying out heating to heat-storing material realizes charging process;Or generated heat with low ebb electric drive resistance wire, this part thermmal storage is got up to realize charging process by heat-storing material;When solar thermal collection system can not meet demand for heat, the heat of storage is discharged into heating steam;Clean energy resource is made full use of, increases the economy of central heating system.

Description

Central heating system based on distributed heating heat-storage technology
Technical field
The present invention relates to a kind of central heating system based on distributed heating heat-storage technology, particularly one kind is carried The solar heating system of phase change material device, belong to central heating, high temperature Solar use, accumulation of energy, The fields such as energy and environment.
Background technology
At present, China's city heat supply thermal source includes:Coal, fuel oil, natural gas, electric energy, nuclear energy, solar energy, Underground heat etc., but the energy used in central heating is current still based on coal, and the economically developed city in part begins to use Natural gas and fuel oil.In the fast development of China's economic, living standards of the people and industrialized level are improved constantly, Under the promotion of relevant policies such as environmental protection and the saving energy, city heat supply is developed rapidly.
Under central heating pattern substitution dispersed supply of heating pattern, related heat supply problem is also gradually displayed.Due to Heat user is more dispersed, and steam (hot water) temperature in course of conveying is gradually reduced, and delivers to pipe network end heat During user, part heating parameter can not meet heat user demand;In addition central heating also has kurtosis, Supply falls short of demand when in face of load peak for thermal source, and drug on the market again during load valley.
Solar energy is widely used as a kind of regenerative resource of cleaning, and solar thermal utilization is just more next More it is taken seriously.Chinese patent " a kind of heat pipe type solar central heating net " (CN201310277088.7) a kind of heat pipe type solar collecting system heating hot-water supply system is disclosed, and It is aided with the auxiliary heating of vacuum gas furnace, the system has the advantages that heat transfer efficiency height, constant temperature and pressure, can met The need for 24 hours hot water of the public buildings such as hotel, but energy storage device is not equipped with, and vacuum gas furnace is as auxiliary Thermal, economy is poor.Chinese patent " the central heating and cooling association system for carrying energy storage tank " (CN201410721211.4) a kind of central heating and cooling association system with energy storage tank is disclosed, is passed through Large energy accumulation tank accumulation of heat and produces hot water in high load capacity in underload, but it belongs to the sensible heat heat accumulation of water, Storage density is low, and floor space is big;Relative to water accumulation of energy, phase-transition heat-storage is more potential, its heat storage capacity It is several times even tens times of water accumulation of energy.Therefore this invention address that developing the heat supply heating system of green energy conservation, With reference to solar thermal collection system and phase-change heat accumulation system, operating cost can be reduced to greatest extent, it is ensured that system Operation stability, reduces environmental pollution, reduces carbon emission.
The content of the invention
In order to improve the inadequate phenomenon of heating steam (water) temperature in existing central heating network, the present invention is provided A kind of central heating system based on distributed heating heat-storage technology, utilizes solar energy heating, trough-electricity heat accumulation Etc. technology, operating cost can be reduced to greatest extent, it is ensured that system run all right, reduce environmental pollution, Reduce a kind of technology of carbon emission.
A kind of central heating system based on distributed heating heat-storage technology described in the invention includes:In solar energy High-temperature heat collection system, regenerative apparatus, heat exchanger, terminal temperature difference and control system;Wrapped in central heating network Include solar thermal collection system and phase-transition heat-storage system;
Described solar energy high temperature collecting system, regenerative apparatus, heat exchanger and terminal temperature difference passes through heat transfer pipe It is sequentially connected;
Described regenerative apparatus includes electrical heating regenerative apparatus and high temperature heat conductive oil regenerative apparatus;
Described control system includes being arranged on temperature measuring instrument on heat conducting oil pipe, pressure measuring instruments with Flow measurement instrument.
Preferably, in the regenerative apparatus in the central heating system based on distributed heating heat-storage technology Electrical heating regenerative apparatus includes with high temperature heat conductive oil regenerative apparatus:Accumulator inlet, accumulator outlet, accumulation of heat Device outer wall, phase-change material, insulation material and resistance heating wire.
Preferably, in the heat transfer pipe in the central heating system based on distributed heating heat-storage technology Heat transfer medium is conduction oil.
Preferably, the phase-change material in the central heating system based on distributed heating heat-storage technology is molten Salt phase-change material.
Preferably, the solar energy high temperature in the central heating system based on distributed heating heat-storage technology Collecting system is solar groove type collecting system.
Preferably, after the heat exchanger in the central heating system based on distributed heating heat-storage technology successively It is connected with variable frequency pump and system recharging oil device, system recharging oil device is connected shape with solar energy high temperature collecting system Into circulation.
Preferably, the solar energy high temperature in the central heating system based on distributed heating heat-storage technology The two ends of collecting system are directly connected with the heat transfer pipe of belt controling valve.
Preferably, two of the regenerative apparatus in the central heating system based on distributed heating heat-storage technology End is directly connected with the heat transfer pipe of belt controling valve.
Preferably, the solar energy high temperature in the central heating system based on distributed heating heat-storage technology Be provided with heat transfer pipe between collecting system and regenerative apparatus temperature measuring instrument, pressure measuring instruments with Flow measurement instrument;Temperature measuring set is provided with heat transfer pipe between described regenerative apparatus and heat exchanger Table, pressure measuring instruments and flow measurement instrument;On heat transfer pipe between described heat exchanger and variable frequency pump It is provided with temperature measuring instrument;It is provided with heat transfer pipe between described variable frequency pump and system recharging oil device Flow measurement instrument and pressure measuring instruments;Described system recharging oil device and solar energy high temperature collecting system Between heat transfer pipe on be provided with pressure measuring instruments.
Specifically, a kind of central heating system based on distributed heating heat-storage technology being previously mentioned in the invention, Including solar energy high temperature collecting system, regenerative apparatus, heat exchanger and related circuit and blind controller system Deng.
Above-mentioned solar energy high temperature collecting system can be groove type heat collector, and heat collector collects solar energy heating heat transfer Medium, heat transfer medium heats the steam (water) in central heating network through heat exchanger, to reach terminal temperature difference side Use requirement.When collecting system heat is rich, heat transfer medium flows through phase transition heat accumulation unit and carries out energy stores.
Above-mentioned phase-transition heat-storage system heat storage medium is fused salt phase-change material, and heat transfer medium is conduction oil, its regenerator The outer wall of casing is enclosed with heat-insulation layer.
Above-mentioned phase-transition heat-storage system has two kinds of operational modes of electrical heating accumulation of heat and high temperature heat conductive oil accumulation of heat, runs mould Formula one:Generated heat using low ebb electric drive resistance wire, this part thermmal storage realization of getting up is filled hot mistake by heat-storing material Journey.Operational mode two:When solar thermal collection system heat is rich, control valve makes conduction oil flow through phase transformation Regenerative apparatus, carries out heating to heat-storing material and realizes charging process.Add when solar thermal collection system can not be met During heat demand, the heat of storage is discharged into heating steam (water).
It is obvious that compared with existing central heating system, the present invention uses groove type solar collecting system and phase Become heat reservoir heating user terminal steam (water), thermal source provided for user terminal by two systems " complementation ", The addition of phase-change heat accumulation system, effectively compensate for exclusive use solar thermal collection system is easily influenceed by weather, Disconnected unstable deficiency, phase-transition heat-storage system can not only store the solar energy of affluence, improve regenerative resource Utilization rate, can also effectively combine trough-electricity, system is had more preferable economy;Based on phase-change accumulation energy The addition of solar energy heating heating system, has effectively widened the application of solar thermal collection system, improves The overall heat capacity of central heating system, realizes energy-saving and emission-reduction, peak load shifting effect, and raising can be again Raw energy utilization rate and heating system overall economy and stability.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, in describing below Accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of distributed heating system of the invention.
Fig. 2 is the structural representation of phase transition heat accumulation unit.
Fig. 3 is the schematic cross-section of phase transition heat accumulation unit.
Label declaration:1st, solar groove type collecting system;2nd, phase transition heat accumulation unit;3rd, system repairing is filled Put;4th, heat exchanger;5th, variable frequency pump;6th, terminal temperature difference;7th, heat transfer pipe;8th, storage heater enters Mouthful;9th, accumulator outlet;10th, phase-change material;11st, insulation material;12nd, storage heater outer wall;13、 Resistance heating wire;14th, TT temperature measuring instruments;15th, PT pressure measuring instruments;16th, FT flow measurements Instrument;17th, control valve.
Embodiment
With reference to embodiment, the present invention is described in further detail, and following examples are the solutions to the present invention Release and the invention is not limited in following examples.
Embodiment 1:
As shown in Figure 1, Figure 2, Figure 3 shows, present embodiments provide a kind of based on distributed heating heat-storage technology Central heating system, including:Solar groove type collecting system 1, phase transition heat accumulation unit 2, heat exchanger 4, change Frequency pump 5, system recharging oil device 3, terminal temperature difference 6 and related circuit and blind controller system;Solar trough Formula collecting system 1, phase transition heat accumulation unit 2, heat exchanger 4, variable frequency pump 5, system recharging oil device 3, end are used The heat transfer medium being in turn connected to form between family 6 by heat transfer pipe 7 in circulation line, heat transfer pipe is to lead Deep fat;Phase transition heat accumulation unit 2 includes electrical heating regenerative apparatus and high temperature heat conductive oil regenerative apparatus, specifically includes Accumulator inlet 8, accumulator outlet 9, storage heater outer wall 12, phase-change material 10, insulation material 11 and Resistance heating wire, phase-change material 10 is fused salt phase-change material;The two ends of solar groove type collecting system 1 are direct It is connected with the heat transfer pipe of belt controling valve;The two ends of phase transition heat accumulation unit are directly connected with the heat transfer of belt controling valve Pipeline 7;TT is provided with heat transfer pipe between solar groove type collecting system 1 and phase transition heat accumulation unit 2 Temperature measuring instrument 14, PT pressure measuring instruments 15 and FT flow measurement instruments 16;Phase transition heat accumulation unit 2 TT temperature measuring instruments 14, PT pressure measuring instruments are provided with heat transfer pipe 7 between heat exchanger 4 15 with FT flow measurement instruments 16;TT is provided with heat transfer pipe 7 between heat exchanger 4 and variable frequency pump 5 Temperature measuring instrument 14;FT is provided with heat transfer pipe 7 between variable frequency pump 5 and system recharging oil device 3 Flow measurement instrument 16 and PT pressure measuring instruments 15;System recharging oil device 3 and solar groove type thermal-arrest system PT pressure measuring instruments 15 is provided with heat transfer pipe 7 between system 1.
Solar groove type collecting system 01 absorbs the heat transfer medium in heat heat transfer pipe 7, passes through regulation Valve Heat Transfer Control medium 07 directly heats the phase transformation material in steam or heating phase transition heat accumulation unit in heating network Material carries out the storage of energy.Phase transition heat accumulation unit 02 has two kinds of fortune of electrical heating accumulation of heat and high temperature heat conductive oil accumulation of heat Row mode, and automatically switched by intelligence control system in both of which.When trough-electricity period at night, profit Generated heat with low ebb electric drive resistance wire 13, this part thermmal storage is got up to realize charging process by heat-storing material;When When solar thermal collection system heat is rich, system can not only meet the requirement of heating steam (water), moreover it is possible to from Dynamic control valve makes part conduction oil flow through phase transition heat accumulation unit, and heating realization is carried out to heat-storing material and fills heat; When solar thermal collection system can not meet demand for heat or rainy weather, by the heat stored in regenerative apparatus Heating steam is discharged, industrial user's demand is reached.
Embodiment 2,
Substantially the same manner as Example 1, difference is:
In a kind of concentration life heating system based on distributing solar energy heat-collecting heat-storage technology, its heating network Medium is domestic hot-water, the heat transfer medium of solar groove type collecting system 01 and phase transition heat accumulation unit 02 be used for plus Hot domestic hot-water, to meet life heat demand.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, Named title etc. can be different.What all construction, feature and principles according to described in inventional idea of the present invention were done etc. In effect or simple change, the protection domain for being included in patent of the present invention.The skill of the technical field of the invention Art personnel can make various modifications or supplement to described specific embodiment or use similar mode Substitute, without departing from the present invention structure or surmount scope defined in the claims, all should belong to In protection scope of the present invention.

Claims (9)

1. a kind of central heating system based on distributed heating heat-storage technology, it is characterised in that:Described collection Middle heating system includes:Solar energy high temperature collecting system, regenerative apparatus, heat exchanger, terminal temperature difference and control System processed;
Described solar energy high temperature collecting system, regenerative apparatus, heat exchanger and terminal temperature difference passes through heat transfer pipe It is sequentially connected;
Described regenerative apparatus includes electrical heating regenerative apparatus and high temperature heat conductive oil regenerative apparatus;
Described control system includes being arranged on temperature measuring instrument on heat conducting oil pipe, pressure measuring instruments with Flow measurement instrument.
2. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:Electrical heating regenerative apparatus in described regenerative apparatus includes with high temperature heat conductive oil regenerative apparatus:Store Hot device entrance, accumulator outlet, storage heater outer wall, phase-change material, insulation material and resistance heating wire.
3. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:Heat transfer medium in described heat transfer pipe is conduction oil.
4. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:Described phase-change material is fused salt phase-change material.
5. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:Described solar energy high temperature collecting system is solar groove type collecting system.
6. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:Be connected with variable frequency pump and system recharging oil device after described heat exchanger in turn, system recharging oil device with Solar energy high temperature collecting system is connected to form circulation.
7. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:The two ends of described solar energy high temperature collecting system are directly connected with the heat transfer pipe of belt controling valve.
8. the central heating system according to claim 1 based on distributed heating heat-storage technology, it is special Levy and be:The two ends of described regenerative apparatus are directly connected with the heat transfer pipe of belt controling valve.
9. the central heating system according to claim 6 based on distributed heating heat-storage technology, it is special Levy and be:Temperature is provided with heat transfer pipe between described solar energy high temperature collecting system and regenerative apparatus Spend measuring instrumentss, pressure measuring instruments and flow measurement instrument;Between described regenerative apparatus and heat exchanger Temperature measuring instrument, pressure measuring instruments and flow measurement instrument are provided with heat transfer pipe;Described heat exchange Temperature measuring instrument is provided with heat transfer pipe between device and variable frequency pump;Described variable frequency pump and system repairing Flow measurement instrument and pressure measuring instruments are provided with heat transfer pipe between device;Described system repairing Pressure measuring instruments is provided with heat transfer pipe between device and solar energy high temperature collecting system.
CN201610230337.0A 2016-04-13 2016-04-13 Central heating system based on distributed heating heat-storage technology Pending CN107289494A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266783A (en) * 2018-01-22 2018-07-10 王体会 A kind of luminous energy air energy thermal source and the three-in-one heat collector of electric heating heat accumulating type
CN113028478A (en) * 2021-04-08 2021-06-25 浙江大学 Heat accumulating type steam heating network heat supply system and method with greatly-fluctuating load
CN113292125A (en) * 2021-05-24 2021-08-24 海南大坤环保科技有限公司 Multifunctional sewage treatment device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108266783A (en) * 2018-01-22 2018-07-10 王体会 A kind of luminous energy air energy thermal source and the three-in-one heat collector of electric heating heat accumulating type
CN113028478A (en) * 2021-04-08 2021-06-25 浙江大学 Heat accumulating type steam heating network heat supply system and method with greatly-fluctuating load
CN113292125A (en) * 2021-05-24 2021-08-24 海南大坤环保科技有限公司 Multifunctional sewage treatment device

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