CN109373551A - System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat - Google Patents
System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat Download PDFInfo
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- CN109373551A CN109373551A CN201811258256.7A CN201811258256A CN109373551A CN 109373551 A CN109373551 A CN 109373551A CN 201811258256 A CN201811258256 A CN 201811258256A CN 109373551 A CN109373551 A CN 109373551A
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- water
- heat
- refrigeration
- waste heat
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
-
- 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
- F24D3/00—Hot-water central heating systems
- F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
-
- 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]
- Y02B30/56—Heat recovery units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat, it include: concentrated supply of heating in the city ground net vibration means for main pipe for supplying water road and return water main line next time, the refrigeration unit of cold air user, made innovation is: center refrigeration Waste Heat Recovery station and/or point family refrigeration Waste Heat Recovery station being arranged along heat supply is once netted, consume hot water heat exchange station, connect the primary net branch line in Waste Heat Recovery station, the positive effect of the present invention is: " recovery " summer is in the primary net of central heating of " suspend mode " state, it conveys the refrigeration heat extraction collected and switchs to required hot water in region, can round-the-clock accumulation of energy and long range heat conveying, meet and disperses hot water user demand along primary net.The utilization efficiency of secondary energy sources is improved, monomer center will be freezed and a point family is freezed, is changed into the comprehensive utilization of large area cold and heat combined supply.The level of comprehensive utilization for improving point family refrigeration waste heat along primary net, reduces the energy energy consumption of production hot water.Alleviate the urban heat land effect generated by refrigeration.
Description
Technical field
The invention belongs to heating arts, are related to a kind of recuperation of heat utilization with central heating network transmission cooling in summer waste heat
System.
Background technique
Currently, organ, commercial buildings and residential houses, summer all generally uses air conditioner refrigerating.A large amount of cooling towers and household
The waste heat gas that outdoor machine of air-conditioner is persistently spread in city exacerbates the formation of urban heat land effect and atmosphere pollution；In addition, the summer
Still there are Residents and businessman (such as bathing place) to use hot water in season.These hot water user, none be not by power consumption, combustion gas,
Coal and obtain hot water.The contradictory phenomena that the abandoning heat being formed in the same area and energy consumption take heat and deposit.Quantitatively, building is collected
Waste heat conversion of freezing is that resident and business heat demand are more than sufficient, hot water needed for the refrigeration waste heat in city is switched to same city
Heat source can not only reduce city " heat island " effect of association due to refrigeration, and the acquisition of summer hot water in city is also made to reduce coal, electricity
Consumption.It so kills two birds with one stone, all because of the technological approaches and equipment of concentrating harvesting and relatively long distance conveying without refrigeration waste heat, causes
Make in city cooling in summer to currently still and depositing the phenomenon that atmosphere heat dissipation and hot water user power consumption, consumption fuel.
Ground in urban district heating system pipe network next time, it is main along city mostly by local municipal sector's unified planning
Street is laid with, and the transmission range of a underground heating network can reach 2 myriametres.A large size is set in the initial station of heating plant to follow
Ring pump, winter provide power by large-scale circulating pump, change the thermal energy of heating plant into 70-110 DEG C of high-temperature-hot-water and supply water along primary net
Pipeline returns to the underground heating facility of heating plant initial station along primary net water return pipeline after heat exchange station heat exchange cooling.Primary net is set
The original intention set is the infrastructure of the Heat transmission as Winter heat supply.After annual heating period, primary net just enters lay-up period,
But primary net does not discharge water during idle, i.e., hot medium is still stored among pipeline.Underground heat supply primary net vibration means for main pipe for supplying water road and
Water in return water main line just remains static, and is slowly dropped to because supplementing water temperature without heat source by 40-50 DEG C of latter stage of heating
20-30 DEG C at the beginning of summer.By taking the underground heating network of 2 myriametre of diameter DN1000 laying length as an example: total for water return pipeline
Length is 4 myriametres, and every linear meter(lin.m.) water-holding quantity is about 0.75 ton, and water-holding quantity is about 30,000 tons, and summer water temperature is at 20 DEG C or so.Through calculating,
30 DEG C of calculating are risen according to pipe memory water temperature, (about can heat energy storage) can absorb heat 3777 giggio.So it is huge and have potential function
Facility but have every year half-time deactivate.
Summary of the invention
The object of the present invention is to provide a kind of recuperations of heat with central heating network transmission cooling in summer waste heat to utilize system,
For have the city of central heating system freeze in summer recovery zone waste heat and as with thermal field heat source, will be in region
Refrigeration and heat supply organically combine, and eliminate influence and summer of a large amount of refrigeration waste heat to urban environment and are disappeared with heat to electric energy or fuel
Consumption.
Refrigeration waste heat recycling system of the invention include: concentrated supply of heating in the city next time net vibration means for main pipe for supplying water road and return
Water main line, cold air user refrigeration unit, made innovation is: along heat supply is once netted be arranged center refrigeration waste heat return
It receives station and/or divides family refrigeration Waste Heat Recovery station, consumption hot water heat exchange station, connect the center refrigeration host's pipeline of Waste Heat Recovery station one time
Primary net branch line.
The center refrigeration Waste Heat Recovery station includes electric heating pump assembly, connection electric heating pump assembly and the secondary of end that freeze
Net, the circulating pump being mounted on secondary network, the cooling tower being mounted on primary net branch line, control system composition, wherein electricity
The import of heat pump condenser connects primary net branch line water supplying pipe, and condensator outlet connects primary net branch line return pipe, electric heating
The evaporator of pump connects refrigeration end through secondary network；The cooling tower is connected across primary net branch by electric three passes switching valve
Between pipeline water supplying pipe and return pipe.
Described divides family refrigeration Waste Heat Recovery station to be connected to including the valve being mounted on primary net water return pipeline
Two of valve two sides once net back-flowing and branched pipeline, and the primary net return pipe branch line for being connected to valve downstream is point family system
Cold Waste Heat Recovery station water supplying pipe, the primary net return pipe branch line for being connected to valve downstream is that a point family refrigeration Waste Heat Recovery station is returned
Water pipe connects secondary network between point family refrigeration Waste Heat Recovery station and user terminal electric heating pump, is mounted on circulating pump on secondary network, even
User terminal electric heating pump is connect to connect refrigeration with the refrigerating circulation for end of freezing, user terminal electric heating pump evaporator with refrigeration end and follow
The user terminal circulating pump of endless tube road installation, is connected across primary net branch line water supplying pipe and return water by electric three passes switching valve
Cooling tower between pipe, wherein secondary network water supplying pipe connects user terminal electric heating pump condenser inlet, and condensator outlet connects secondary network and returns
Water pipe.
Of the invention further improving is: passing through in point condenser of family refrigeration consumer end electric heating pump for occupying domestic hot water
Running water pipe.
The consumption hot water heat exchange station is in increase original secondary network heating heat-exchange station increase hot water water- to-water heat exchanger, once
Net circulating pump is formed across the tap water pipe line of water water- to-water heat exchanger, heat user end and control system.
The working principle of the invention includes
1, center refrigeration and primary net accumulation of energy
Power, 7 DEG C of cold water that electric heating pump assembly is produced are provided by the secondary network circulating pump at center refrigeration Waste Heat Recovery station first
It is sent into the refrigeration end in building along secondary network water supply pipe, 7 DEG C of cold water carry out temperature after heat exchanges with room air and rise to
12 DEG C, then enter electric heating pump assembly evaporation ends along secondary network water return pipeline, it is cold as 7 DEG C again after the cooling of unit evaporation ends
Water enters secondary network circulating pump, enters in secondary network water supply pipe under the action of secondary network circulating pump, to complete in primary
Entreat a cyclic process of refrigeration.
Power is provided by the primary net circulating pump at center refrigeration Waste Heat Recovery station, extracts heat supply primary net vibration means for main pipe for supplying water road
20-30 DEG C of warm water is sent into electric heating pump assembly condensation side along primary net water supply branch pipe, and the electric compressor through electric heating pump assembly, which is done manual work, to be inhaled
The heat for receiving evaporator cool circulation water is changed into high temperature thermal conductivity and enters in 20-30 DEG C of warm water warm water of condensation end, by unit condensation end
Become 40-50 DEG C of hot water after heating, then along the return water main line that primary net return branch returns to that heat supply is once netted.Extract heat supply
Primary 20-30 DEG C of road of net vibration means for main pipe for supplying water warm water, after being heated up by electric heating pump assembly again recharge to the primary net return water main line of heat supply,
For the hydraulic equilibrium for return water main line itself for maintaining heat supply once to net, the primary net return water main line of heat supply can be from distal end and confession
Hot primary net vibration means for main pipe for supplying water road connection, fills into heat supply from the return water main line once netted for the higher water of temperature and once nets water supply master
In pipeline, the hydraulic equilibrium and the primary net of underground heat supply for return water main line that heat supply is once netted is achieved in for return water main line
One process of accumulation of energy.
In the process of running, detect that primary net vibration means for main pipe for supplying water temperature is higher than electric heating pump assembly condensation side design temperature, no
Can as electric heating pump assembly cooling water in use, electric T-shaped valve is followed pipeline from primary net by controller output signal
Ring heat dissipation, which switches in closed cooling tower, radiates, spare radiator of the closed cooling tower as primary net accumulation of heat, it is ensured that electricity
The safe operation of heat pump unit.
2, refrigeration waste heat in region is transmitted at a distance and is utilized
Primary net circulating pump by consumption hot water heat exchange station is arranged in provides power, by the 40- of the primary net return water main line of heat supply
50 DEG C of hot water are pumped into a net side import of water water- to-water heat exchanger along primary net return branch road, in water water- to-water heat exchanger and secondary network
After the 15-20 DEG C of tap water heat exchange of side, after the water temperature once netted is down to 20-30 DEG C by 40-50 DEG C, from the primary of water water- to-water heat exchanger
Net side outlet enters in heat supply primary net vibration means for main pipe for supplying water road along primary net water supply bye-pass, and 20-30 DEG C of the tap water edge of heating up
Tap water hot water line enters heat user end, thus complete sub-region refrigeration waste heat at a distance with a process utilizing.
3, the primary net accumulation of heat for dividing family to freeze and Waste Heat Reuse
Firstly, providing power, the cool circulation water that user terminal electric heating pump evaporation ends are produced, along refrigeration cycle by user terminal circulating pump
Pipeline is sent into fan coil, and after cold water carries out heat exchange by fan coil and room air, cool circulation water temperature is risen
High room temperature is reduced, and the cool circulation water after heating returns to user terminal electric heating pump evaporation ends along refrigerating circulation, by user
End electric heating pump evaporation ends are again introduced into refrigerating circulation after becoming cool circulation water after cooling down again, to complete once to divide family
Refrigerative circle system.
At the same time, power is provided by secondary network circulating pump, extracts the water at low temperature of the primary net return water upstream of heat supply, edge
Secondary network water supplying pipe is sent into the secondary net side condensation end of user terminal electric heating pump, and the electric compressor workmanship through user terminal electric heating pump, which absorbs, steams
The heat of hair device cool circulation water is changed into high temperature thermal conductivity and enters in the water at low temperature of condensation end, the water at low temperature after condensation end heats up,
It is returned in the primary net return water downstream pipe of heat supply along secondary network return pipe.The primary net return water upstream water at low temperature of heat supply is extracted,
Recharge is to the primary net return water downstream pipe of heat supply again after being heated up by user terminal electric heating pump, to maintain that heat supply once nets for return water
The hydraulic equilibrium of main line itself, the primary net return water main line of heat supply can be connect from distal end with heat supply primary net vibration means for main pipe for supplying water road,
The lower water of temperature is filled into the primary net return water upstream of heat supply from the vibration means for main pipe for supplying water road once netted, is achieved in heat supply one
Secondary net for return water main line hydraulic equilibrium and the primary net of underground heat supply for water return pipeline accumulation of energy a process.
In the process of running, detect that primary net return water upstream temperature is higher than user terminal electric heating pump condensation end design temperature
Degree, cannot function as the cooling water of user terminal electric heating pump in use, pipeline to be cut to electric T-shaped valve by controller output signal
It shifts in closed cooling tower and radiates, spare radiator of the closed cooling tower as primary net accumulation of heat, it is ensured that user terminal electric heating
The safe operation of pump.
Divide family refrigeration Waste Heat Reuse using running water pipe and user terminal electric heating pump condensation end heat exchange mode, directly heats unit
Interior heat user cold water is the refrigeration waste heat of user terminal electric heating pump using heat source.
The positive effect of the present invention is
" recovery " summer is in the primary net of central heating of " suspend mode " state, switchs to same city needs as summertime collection refrigeration heat extraction
The transmission of facility of the heating source in hot water place, social benefit have:
1, the advantage for making full use of north city underground heat supply network realizes 24 hours large energy accumulations and the conveying of long range heat, full
Disperse discontinuous to use heat demand along the primary net of foot.
2, monomer center is freezed and resident point family refrigeration mode, is changed into large area cold and heat combined supply comprehensive utilization mould
Formula.The level of comprehensive utilization of point family refrigeration waste heat along primary net is improved, reduction produces 40-50 DEG C of secondary energy sources energy consumption,
And then control region electricity consumption of coal and flue gas pollutant total emission volumn.
3, reduce the refrigeration waste heat discharge total amount for being incorporated to the organ once netted, commercial buildings and residential houses, alleviate
The formation of tropical island effect in urban area.
Detailed description of the invention
Fig. 1 is overall system view of the invention.
Specific embodiment
Refering to fig. 1, the recuperation of heat of refrigeration waste heat of the invention using system include: concentrated supply of heating in the city next time net supply
The refrigeration unit 13 and 14 of water main line 2 and return water main line 1, cold air user, made innovation is: on the primary net edge of heat supply
Line is arranged center refrigeration Waste Heat Recovery station 5-2 and/or divides family refrigeration Waste Heat Recovery station 5-1, consumption hot water heat exchange station 5-3, connects
Once the net back-flowing and branched pipeline 10-1 and water supply branch line 10-2 of the center refrigeration host's pipeline of Waste Heat Recovery station one time；
The center refrigeration Waste Heat Recovery station 5-2 includes the two of electric heating pump assembly 14, connection electric heating pump assembly and refrigeration end
Circulating pump 6 that secondary net water return pipeline 11-1, secondary network water supply pipe 11-2 are mounted on secondary network is mounted on primary net branched pipe
The closed cooling tower 7 of road, the primary net being mounted on primary net branch line and cooling tower circulating pump 8, electric centralized control
System, wherein the import of 14 condenser 14-1 of electric heating pump assembly meets primary net branch line water supplying pipe 10-2, and condensator outlet connects
The evaporator 14-2 of primary net branch line return pipe 10-1, electric heating pump assembly connect refrigeration end 16 through secondary network；Described
Cooling tower 7 is connected across between primary net branch line water supplying pipe 10-2 and return pipe 10-1 by electric three passes switching valve 9；
Described divides family refrigeration Waste Heat Recovery station 5-1 to be connected to including the valve 4 being mounted on primary net water return pipeline
Two of valve two sides once net back-flowing and branched pipeline 10-1, and the primary net return pipe branch line for being connected to valve downstream is point
Freeze Waste Heat Recovery station 5-1 water supplying pipe at family, and the primary net return pipe branch line for being connected to valve downstream is a point family refrigeration waste heat
Recycle bin 5-1 return pipe, point family, which is freezed, connects secondary network between Waste Heat Recovery station 5-1 and user terminal electric heating pump 13, is mounted on two
Secondary online circulating pump 6, the refrigerating circulation 15 of connection user terminal electric heating pump 13 and end 16 of freezing, user terminal electric heating pump steam
Hair device 13-2 connect the user terminal circulating pump 21 installed in refrigerating circulation 15 with refrigeration end 16, is switched by electric three passes
Valve 9 is connected across the cooling tower 7 between primary net branch line water supplying pipe and return pipe, wherein secondary network water supplying pipe 11-2 connects point
Cloth electric heating pump condenser 13-1 import, the outlet condenser 13-1 meet secondary network return pipe 11-1；
The running water pipe 17 for occupying domestic hot water is passed through in the condenser 13-1 of user terminal electric heating pump 13.
The consumption hot water heat exchange station be it is original including heating water water- to-water heat exchanger 20, user's radiator 19 it is secondary
Increase water water- to-water heat exchanger 12, primary net circulating pump 8 and the electric three passes switching valve 9, originally of supplying hot water in net heating heat-exchange station 5-3
Water lines 17, heat user end 18, consumption hot water heat exchange station electric control system composition.
Claims (2)
1. system is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat, it is characterized in that: including: that confession is concentrated in city
The thermally refrigeration unit on net vibration means for main pipe for supplying water road and return water main line, cold air user next time, made innovation is: in heat supply one
Center refrigeration Waste Heat Recovery station is set along secondary net and/or divides family refrigeration Waste Heat Recovery station, consumption hot water heat exchange station, connects waste heat
Recycle bin station and primary net branch line with host's pipeline；
Described center refrigeration Waste Heat Recovery station, including electric heating pump assembly, connection electric heating pump assembly and end of freezing secondary network,
The circulating pump that is mounted on secondary network, is mounted on primary net branch line the cooling tower being mounted on primary net branch line
Primary net and cooling tower circulating pump, control system, wherein the import of electric heating pump condenser connects primary net branch line and supplies water
Pipe, condensator outlet connect primary net branch line return pipe, and the evaporator of electric heating pump connects refrigeration end through secondary network；Described
Cooling tower is connected across between primary net branch line water supplying pipe and return pipe by electric three passes switching valve；
Described divides family refrigeration Waste Heat Recovery station to be connected to valve including the valve being mounted on primary net water return pipeline
Two of two sides once net back-flowing and branched pipeline, and the primary net return pipe branch line for being connected to valve downstream is that point family refrigeration is useless
Recuperation of heat station water supplying pipe, the primary net return pipe branch line for being connected to valve downstream is that point family refrigeration waste heat returns station return pipe,
Secondary network is connected between point family refrigeration Waste Heat Recovery station and user terminal electric heating pump, the circulating pump that is mounted on secondary network, connection are used
Family end electric heating pump connect refrigeration cycle pipe with the refrigerating circulation of refrigeration end, user terminal electric heating pump evaporator with refrigeration end
The user terminal circulating pump of road installation, by electric three passes switching valve be connected across primary net branch line water supplying pipe and return pipe it
Between cooling tower, wherein secondary network water supplying pipe connects resident end electric heating pump condenser inlet, and condensator outlet connects secondary network and returns
Water pipe；
The consumption hot water heat exchange station is followed in increase original secondary network heating heat-exchange station increase hot water water- to-water heat exchanger, primary net
Ring pumps, across the tap water pipe line of water water- to-water heat exchanger, heat user end, consumption hot water heat exchange station electric control system composition.
2. the recuperation of heat according to claim 1 with central heating network transmission cooling in summer waste heat utilizes system, special
Sign is: passing through the running water pipe for occupying domestic hot water in the condenser of user terminal electric heating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258256.7A CN109373551A (en) | 2018-10-26 | 2018-10-26 | System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258256.7A CN109373551A (en) | 2018-10-26 | 2018-10-26 | System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109373551A true CN109373551A (en) | 2019-02-22 |
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ID=65389945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811258256.7A Pending CN109373551A (en) | 2018-10-26 | 2018-10-26 | System is utilized with the recuperation of heat of central heating network transmission cooling in summer waste heat |
Country Status (1)
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| CN (1) | CN109373551A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388685A (en) * | 2019-07-09 | 2019-10-29 | 鞍钢股份有限公司 | System and method for simultaneously recovering multiple industrial waste heat |
| CN110873354A (en) * | 2019-12-23 | 2020-03-10 | 北京市热力集团有限责任公司 | One-machine multi-effect heat pump system for peak regulation heat supply plant and heat pump control method |
| CN113357719A (en) * | 2020-03-04 | 2021-09-07 | 贵州电网有限责任公司 | Comprehensive energy recycling device |
-
2018
- 2018-10-26 CN CN201811258256.7A patent/CN109373551A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388685A (en) * | 2019-07-09 | 2019-10-29 | 鞍钢股份有限公司 | System and method for simultaneously recovering multiple industrial waste heat |
| CN110388685B (en) * | 2019-07-09 | 2021-05-28 | 鞍钢股份有限公司 | System and method for simultaneously recovering multiple industrial waste heat |
| CN110873354A (en) * | 2019-12-23 | 2020-03-10 | 北京市热力集团有限责任公司 | One-machine multi-effect heat pump system for peak regulation heat supply plant and heat pump control method |
| CN113357719A (en) * | 2020-03-04 | 2021-09-07 | 贵州电网有限责任公司 | Comprehensive energy recycling device |
| CN113357719B (en) * | 2020-03-04 | 2023-05-26 | 贵州电网有限责任公司 | Comprehensive energy recycling device |
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Application publication date: 20190222 |
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