CN106930827B - A kind of cogeneration energy supplying system, method and device - Google Patents
A kind of cogeneration energy supplying system, method and device Download PDFInfo
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- CN106930827B CN106930827B CN201710146503.3A CN201710146503A CN106930827B CN 106930827 B CN106930827 B CN 106930827B CN 201710146503 A CN201710146503 A CN 201710146503A CN 106930827 B CN106930827 B CN 106930827B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
- F02G5/04—Profiting from waste heat of exhaust gases in combination with other waste heat from combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G2260/00—Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to the integration of equipments technical field of energy supplying system, a kind of cogeneration energy supplying system, method and device are disclosed.Cogeneration energy supplying system includes internal combustion engine, air-conditioner set, organic rankine cycle system and the first generator and the second generator, in which: internal combustion engine has power output end and flue gas output end, and power output end is connect with the first generator；Air-conditioner set is connect with flue gas output end；Organic rankine cycle system includes by the sequentially connected evaporator of pipeline, expanding machine, condenser and working medium pump, and pipeline is interior to have working medium, and evaporator is connect with flue gas output end, and expanding machine is connect with the second generator.Compared with prior art, the utilization rate of cogeneration energy supplying system can be improved in the program, reduces energy supply cost.
Description
Technical field
The present invention relates to the integration of equipments technical fields of energy supplying system, energize system more particularly to a kind of cogeneration
System, method and device.
Background technique
Commercial building, for example, office building, market building etc., generally fallen into energy consumption electric load it is relatively high and
The relatively small number of low hotspot stress building of cooling and heating load.In summer or winter, for commercial building, existing a large amount of electricity
Demand has heat or cold demand simultaneously, utilizes cogeneration cooling heating system (Combined Cooling Heating and at this time
Power, abbreviation CCHP) and municipal power grid joint energy supply, wherein CCHP system can be while power generation, can also be using being
Waste heat of uniting carries out heat supply or cooling supply to commercial building, therefore this energization schemes can keep the same of high-energy source utilization efficiency
When sufficiently meet summer or winter cool and thermal power energy requirement.
Defect of the existing technology is, relatively low in the cooling and heating load of transition season, commercial building, uses CCHP
System energizes generated waste heat and utilizes because being unable to fully and cause to waste, and is unfavorable for reducing energy supply cost.
Summary of the invention
The purpose of the embodiment of the present invention is that a kind of cogeneration energy supplying system, method and device are provided, it is cold and hot to improve
Electricity Federation produces the utilization rate of energy supplying system, reduces energy supply cost.
The embodiment of the invention provides a kind of cogeneration energy supplying systems, including internal combustion engine, air-conditioner set, organic Rankine
The circulatory system and the first generator and the second generator, in which:
The internal combustion engine has power output end and flue gas output end, and the power output end is connect with the first generator；
The air-conditioner set is connect with the flue gas output end；
The organic rankine cycle system includes passing through the sequentially connected evaporator of pipeline, expanding machine, condenser and working medium
Pump, the pipeline is interior to have working medium, and the evaporator is connect with the flue gas output end, and the expanding machine and the second generator connect
It connects.
Using technical solution of the embodiment of the present invention, can be somebody's turn to do according to commercial building in the cold and hot electricity demanding determination in different times
The operating mode of cogeneration energy supplying system, the power of internal combustion engine output are transferred to the first generator for generating electricity, discharge
Flue gas can be supplied in summer or winter to air-conditioner set, to carry out refrigeration or heat supply, and in transition season Shi Zeke
Flue gas is delivered to organic rankine cycle system, so that organic rankine cycle system is done work using waste heat and power is transferred to the
Two generators are for generating electricity, and compared with prior art, still energize using the cogeneration energy supplying system in transition season
And the fume afterheat of internal combustion engine can be made full use of to generate electricity, therefore the program improves the utilization of cogeneration energy supplying system
Rate improves the full annual utilization hours of cogeneration energy supplying system, reduces energy supply cost.
Preferably, cogeneration energy supplying system further includes boiler and/or refrigeration machine.
Preferably, cogeneration energy supplying system further includes the First Heat Exchanger being connected to the cylinder sleeve of internal combustion engine.
Preferably, cogeneration energy supplying system further includes the second heat exchanger, and second heat exchanger, which has, to be isolated
Hot flow path and cold runner, the hot flow path are connected to First Heat Exchanger, and the cold runner is connected to the heat supply backwater channel of building.
Preferably, the air-conditioner set is connected to the output end of hot water of First Heat Exchanger.
Preferably, cogeneration energy supplying system further include:
Temperature sensor is set to interior, for detecting indoor temperature information；
Controller, respectively with internal combustion engine, air-conditioner set, organic rankine cycle system, boiler, refrigeration machine and temperature sensing
Device electrical connection, is used for
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown；
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And it controls air-conditioner set and is in cooling supply working condition, while controlling organic rankine cycle system and boiler down；
Wherein, the first temperature threshold, second temperature threshold value, third temperature threshold and the 4th temperature threshold need to meet: first
Temperature threshold, second temperature threshold value, third temperature threshold and the 4th temperature threshold are sequentially increased.
Based on identical inventive concept, the embodiment of the invention also provides a kind of cogeneration energy supply methods, comprising:
Obtain current indoor temperature information；
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine.
Using technical solution of the embodiment of the present invention, can be somebody's turn to do according to commercial building in the cold and hot electricity demanding determination in different times
The operating mode of cogeneration power supply device, the power of internal combustion engine output are transferred to the first generator for generating electricity, discharge
Flue gas can be supplied in summer or winter to air-conditioner set, to carry out refrigeration or heat supply, and in transition season Shi Zeke
Flue gas is delivered to organic rankine cycle system, so that organic rankine cycle system is done work using waste heat and power is transferred to the
Two generators are for generating electricity, and compared with prior art, still energize using the cogeneration power supply device in transition season,
The fume afterheat of internal combustion engine can be made full use of to generate electricity, therefore the program improves the utilization of cogeneration energy supplying system
Rate improves the full annual utilization hours of cogeneration energy supplying system, reduces energy supply cost.
Preferably, cogeneration energy supply method further include:
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown.
Preferably, cogeneration energy supply method further include:
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And it controls air-conditioner set and is in cooling supply working condition, while controlling organic rankine cycle system and boiler down.
Based on identical inventive concept, the embodiment of the invention also provides a kind of cogeneration power supply devices, comprising:
Equipment is obtained, for obtaining indoor temperature information；
Equipment is controlled, is used for
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine.
Using technical solution of the embodiment of the present invention, can be somebody's turn to do according to commercial building in the cold and hot electricity demanding determination in different times
The operating mode of cogeneration power supply device, the power of internal combustion engine output are transferred to the first generator for generating electricity, discharge
Flue gas can be supplied in summer or winter to air-conditioner set, to carry out refrigeration or heat supply, and in transition season Shi Zeke
Flue gas is delivered to organic rankine cycle system, so that organic rankine cycle system is done work using waste heat and power is transferred to the
Two generators are for generating electricity, and compared with prior art, still energize using the cogeneration power supply device in transition season,
The fume afterheat of internal combustion engine can be made full use of to generate electricity, therefore the program improves the utilization of cogeneration energy supplying system
Rate improves the full annual utilization hours of cogeneration energy supplying system, reduces energy supply cost.
Preferably, the control equipment is further used for the control when room temperature is less than the first temperature threshold of setting
Internal combustion engine, air-conditioner set and boiler are opened, and are controlled air-conditioner set and be in for hot working, while controlling Organic Rankine Cycle
System and refrigeration machine are shut down.
Preferably, the control equipment is further used for the control when four temperature threshold of the room temperature not less than setting
Internal combustion engine, air-conditioner set and refrigeration machine processed are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic Rankine
The circulatory system and boiler down.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cogeneration of embodiment of the present invention energy supplying system；
Fig. 2 is the flow diagram of cogeneration of embodiment of the present invention energy supply method；
Fig. 3 is the structural schematic diagram of cogeneration of embodiment of the present invention power supply device.
Appended drawing reference:
10- internal combustion engine 11- power output end 12- flue gas output end 20- air-conditioner set
30- organic rankine cycle system 31- evaporator 32- expanding machine 33- condenser
34- working medium pump 40- the first generator 50- the second generator 60- boiler
70- refrigeration machine 80- First Heat Exchanger 90- the second heat exchanger 100- obtains equipment
200- controls equipment
Specific embodiment
In order to improve the utilization rate of cogeneration energy supplying system, energy supply cost is reduced, the embodiment of the invention provides one
Kind cogeneration energy supplying system, method and device.To make the object, technical solutions and advantages of the present invention clearer, below
For embodiment, invention is further described in detail.
As shown in Figure 1, cogeneration energy supplying system provided in an embodiment of the present invention, including internal combustion engine 10, air-conditioner set
20, organic rankine cycle system 30 and the first generator 40 and the second generator 50, in which:
Internal combustion engine 10 has power output end 11 and flue gas output end 12, and power output end 11 and the first generator 40 connect
It connects；
Air-conditioner set 20 is connect with flue gas output end 12；
Organic rankine cycle system 30 includes passing through the sequentially connected evaporator 31 of pipeline, expanding machine 32,33 and of condenser
Working medium pump 34, pipeline is interior to have working medium, and evaporator 31 is connect with flue gas output end 12, and expanding machine 32 and the second generator 50 connect
It connects.
Using technical solution of the embodiment of the present invention, can be somebody's turn to do according to commercial building in the cold and hot electricity demanding determination in different times
The operating mode of cogeneration energy supplying system, the power that internal combustion engine 10 exports are transferred to the first generator 40 and are used to generate electricity,
The flue gas of discharge can be supplied in summer or winter to air-conditioner set 20, to carry out refrigeration or heat supply, and in transition season
When flue gas can be then delivered to organic rankine cycle system 30, using waste heat make organic rankine cycle system 30 do work and will move
Power is transferred to the second generator 50 for generating electricity, compared with prior art, in transition season still using the cogeneration
Energy supplying system energizes and the fume afterheat of internal combustion engine 10 can be made full use of to generate electricity, therefore the program improves cogeneration
The utilization rate of energy supplying system improves the full annual utilization hours of cogeneration energy supplying system, reduces energy supply cost.
Organic rankine cycle system 30 (Organic Rankine Cycle, abbreviation ORC) is using low-boiling-point organic compound as work
The Rankine cycle of matter, organic working medium absorb heat in evaporator 31 from fume afterheat, and generating has certain pressure and temperature
Steam, steam, which enters, carries out expansion work in expanding machine 32, sent out so as to output power to the second generator 50
Electricity enters heat release in condenser 33 from the low-pressure steam being discharged in expanding machine 32 after acting and condenses into liquid, finally by work
Matter pump 34 comes back in evaporator 31, is recycled next time.Wherein, the concrete type of working medium is unlimited, such as can be five
Fluoro-propane, HFA 134a or 1, the refrigerants such as 1,1- trifluoroethane.
Fuel type used in internal combustion engine 10 is unlimited, such as can be coal or natural gas, as preferred reality of the invention
Apply example, the external output power of natural gas and fume afterheat that internal combustion engine 10 passes through burning gas distributing system offer.Internal combustion engine 10
Quantity it is unlimited, can be one or more, the energy requirement of cool and thermal power is determined with specific reference to building.
Air-conditioner set 20 in the embodiment of the present invention is to discharge flue gas and hot water as the fume hot-water of power using internal combustion engine 10
The quantity of type lithium bromide chiller, air-conditioner set 20 is unlimited, needed with specific reference to energy of the building to cool and thermal power for one or more
Ask determining.
As shown in Figure 1, in a preferred embodiment of the invention, cogeneration energy supplying system further include boiler 60 and/or
Refrigeration machine 70.Using the technical solution, when the thermic load of building is higher, the heating load of air-conditioner set 20 is not able to satisfy heat demand
When, it can use the supply that boiler 60 undertakes partial heat；When the refrigeration duty of building is higher, the refrigerating capacity of air-conditioner set 20 cannot
When meeting refrigeration requirement, the supply that refrigeration machine 70 undertakes part cooling capacity can use, therefore pass through setting boiler 60 and refrigeration machine
70 make the cogeneration energy supplying system can satisfy the various hot-cool demands of building, improve the energy supplying system to energy demand
The adaptability of variation.Wherein, fuel type used in boiler 60 is unlimited, it is preferred that uses natural gas in embodiments of the present invention
The natural gas that pipe network provides is as fuel.
In a preferred embodiment of the invention, cogeneration energy supplying system further includes being connected to the cylinder sleeve of internal combustion engine 10
First Heat Exchanger 80.First Heat Exchanger 80 can exchange heat to the jacket water of internal combustion engine, keep the work of internal combustion engine 10 more stable,
To improve the functional reliability of cogeneration energy supplying system.
Continuing with as shown in Figure 1, in a preferred embodiment of the invention, cogeneration energy supplying system further includes second changing
There is the hot flow path being isolated and cold runner, hot flow path to be connected to First Heat Exchanger 80 for hot device 90, the second heat exchanger 90, cold runner
It is connected to the heat supply backwater channel of building.It, will by the second heat exchanger 90 that hot water or cold water can be isolated using the technical solution
Cooling water of internal combustion engine and the heat supply return water of building exchange heat, and reenter First Heat Exchanger 80 after so that cooling water of internal combustion engine is carried out cooling
It is interior, and heat supplying pipeline is reentered after so that heat supply return water is heated up, therefore the program can make full use of internal combustion engine cooling
The waste heat of water, while heat supply return water can be polluted to avoid cooling water of internal combustion engine.Wherein, the second heat exchanger 90 can be plate
Formula heat exchanger or thermal wheel.
Preferably, air-conditioner set 20 is connected to the output end of hot water of First Heat Exchanger 80.The power of air-conditioner set 20 can be with
Flue gas is discharged by internal combustion engine 10 and cooling water of internal combustion engine provides simultaneously, to make full use of the fume afterheat and cooling water of internal combustion engine
Waste heat further reduced energy supply cost.
In a preferred embodiment of the invention, cogeneration energy supplying system further include:
Temperature sensor is set to interior, for detecting indoor temperature information；
Controller, respectively with internal combustion engine 10, air-conditioner set 20, organic rankine cycle system 30, boiler 60, refrigeration machine 70 with
And temperature sensor electrical connection.
When room temperature is less than the first temperature threshold of setting, controller controls internal combustion engine 10, air-conditioner set 20 and pot
Furnace 60 is opened, and is controlled air-conditioner set 20 and be in for hot working, while controlling organic rankine cycle system 30 and refrigeration machine
70 shut down.When the thermic load that the program is suitable for building is very high, air-conditioner set 20 and boiler 60 are needed at this time while opening progress
Heating, the flue gas that internal combustion engine 10 discharges all are supplied to air-conditioner set 20.
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, controller control
Internal combustion engine 10 and air-conditioner set 20 processed are opened, and are controlled air-conditioner set 20 and be in for hot working, while controlling organic Rankine
The circulatory system 30, boiler 60 and refrigeration machine 70 are shut down.When the thermic load that the program is suitable for building is higher, only need to open at this time
Air-conditioner set 20 heats, and the flue gas that internal combustion engine 10 discharges is supplied to air-conditioner set 20.It is noted that in the thermic load
Under the conditions of, if the partial fume that internal combustion engine 10 discharges can meet power demand when air-conditioner set 20 heats, then and it is extra
Flue gas also can transport to organic rankine cycle system 30 and generate electricity, so as to further increase the UTILIZATION OF VESIDUAL HEAT IN of energy supplying system
Rate reduces energy supply cost.
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, controller control
Internal combustion engine 10 and organic rankine cycle system 30 processed are opened, while being controlled air-conditioner set 20, boiler 60 and refrigeration machine 70 and being shut down.It should
When scheme is lower suitable for Building Cooling load, the flue gas that internal combustion engine 10 discharges at this time is all delivered to Organic Rankine Cycle system
System 30 generates electricity, and the daily heat demand of building can be provided by cooling water of internal combustion engine waste heat.
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, controller control
Internal combustion engine 10 and air-conditioner set 20 processed are opened, and are controlled air-conditioner set 20 and be in cooling supply working condition, while controlling organic Rankine
The circulatory system 30, boiler 60 and refrigeration machine 70 are shut down.When the refrigeration duty that the program is suitable for building is higher, only need to open at this time
Air-conditioner set 20 freezes, and the flue gas that internal combustion engine 10 discharges is supplied to air-conditioner set 20.It is noted that in the refrigeration duty
Under the conditions of, if the partial fume that internal combustion engine 10 discharges can meet power demand when air-conditioner set 20 freezes, then and it is extra
Flue gas also can transport to organic rankine cycle system 30 and generate electricity, so as to further increase the UTILIZATION OF VESIDUAL HEAT IN of energy supplying system
Rate reduces energy supply cost.
When four temperature threshold of the room temperature not less than setting, controller controls internal combustion engine 10,20 and of air-conditioner set
Refrigeration machine 70 is opened, and is controlled air-conditioner set 20 and be in cooling supply working condition, while controlling organic rankine cycle system 30 and pot
Furnace 60 is shut down.When the refrigeration duty that the program is suitable for building is very high, air-conditioner set 20 and refrigeration machine 70 are needed at this time while being opened
Freeze, the flue gas that internal combustion engine 10 discharges all is supplied to air-conditioner set 20.
Wherein, the first temperature threshold, second temperature threshold value, third temperature threshold and the 4th temperature threshold need to meet: first
Temperature threshold, second temperature threshold value, third temperature threshold and the 4th temperature threshold are sequentially increased, and such as the first temperature threshold can be set
It is set to 5 DEG C, second temperature threshold value can be set as 18 DEG C, and third temperature threshold can be set as 28 DEG C, and the 4th temperature threshold can
To be set as 35 DEG C, but the present invention is not limited to these specific numerical value.
More detailed description will be done to the embodiment of the present invention by taking certain commercial building as an example below.
Certain commercial building, including market and office building, 5080 ㎡ of overall floorage, use cogeneration energy supplying system
Energy supply.The energy supply demand of the commercial building is divided into three periods: the refrigeration period is 5~September, about 150 days, 3600 hours；Heating
Period be December, January and 2 months, about 90 days, 2160 hours；Transition period be March, April and October, November, about 120 days,
2880 hours.The commercial building is less with energy demand festivals or holidays, therefore can be ignored.Section at work, the commercialization are built
The electric load built is more steady, and unit area power load is about 100W/ ㎡, and total power load is about 500kW；Summer refrigeration duty
Larger, unit area refrigeration duty is about 160W/ ㎡, is always about 800kW with refrigeration duty；Winter unit area thermic load is about 60W/
㎡ is always about 300kW with thermic load.
The cogeneration energy supplying system of present case includes a gas internal-combustion engine, a fume hot-water type lithium bromide machine
Group, organic rankine cycle system and gas fired-boiler and electric refrigerating machine, the wherein important technological parameters of gas internal-combustion engine sum such as table 1
Shown, the important technological parameters of organic rankine cycle system are as shown in table 2.
The important technological parameters of 1 gas internal-combustion engine sum of table
The important technological parameters of 2 organic rankine cycle system of table
By taking a certain working day in transition period as an example, the operation conditions of cogeneration energy supplying system is analyzed.
Assuming that the commercial building uses 10 hours on weekdays, by analysis above, the commercial building is in the cold and hot negative of transition period
Lotus is less, if the electric load of 500kW is provided all of municipal power grid, according to the price standard of current alternating current, then
The electric energy of 5000kWh needs to spend about 3900 yuan；If energized using cogeneration energy supplying system and municipal power grid joint,
In 10 hours on weekdays, there are 6 hours to be in the high crest segment of electricity price, is energized in this 6 hours using cogeneration
System, it is possible to provide the electric energy of 2400kWh, and gas internal-combustion engine discharge flue gas can be delivered to organic rankine cycle system into
Row power generation, it is possible to provide electric energy be
W=297kW × 6 × 19% ≈ 340kWh
This scheme whole day consumes natural gas
Wherein.Q is the Lower heat value of natural gas, takes q=35MJ/N ㎡, then consuming natural gas m is 650N ㎡.
This scheme need to take electricity from municipal power grid
P=5000kW-2400kW-340kW=2260kW
According to current electricity rates and Gas Prices, the program about spends 3328 yuan.
As it can be seen that in transition period, if the commercial building utilizes cogeneration provided in an embodiment of the present invention energy supply system
System energy supply, the scheme energized compared to the prior art merely with municipal power grid can reduce cost 15% or so, while cool and thermal power
Coproduction energy supplying system can at least run 528 hours in transition period.Therefore, the program improves cogeneration energy supply system
The utilization rate of system, and significantly reduce energy supply cost.
Based on identical inventive concept, the embodiment of the invention also provides a kind of cogeneration energy supply methods, comprising:
Obtain current indoor temperature information；
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine.
Using technical solution of the embodiment of the present invention, confession can be determined in the cold and hot electricity demanding in different times according to commercial building
Energy method, the power of internal combustion engine output are transferred to the first generator for generating electricity, and the flue gas of discharge is in summer or winter
It can supply to air-conditioner set, to carry out refrigeration or heat supply, and then flue gas can be delivered to organic Rankine in transition season
The circulatory system makes organic rankine cycle system do work and power is transferred to the second generator and is used to generate electricity, compare using waste heat
The prior art is energized using the cogeneration energy supply method in transition season, can make full use of the fume afterheat of internal combustion engine
It generates electricity, therefore the program improves the utilization rate of cogeneration energy supplying system, that is, improves cogeneration energy supply system
The full annual utilization hours of system, reduce energy supply cost.
Preferably, cogeneration energy supply method further include:
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and are controlled
Air-conditioner set processed is in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown.
Preferably, cogeneration energy supply method further include:
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened,
And it controls air-conditioner set and is in cooling supply working condition, while controlling organic rankine cycle system and boiler down.
As shown in Fig. 2, a specific embodiment of cogeneration energy supply method of the present invention, comprising the following steps:
Step 101: obtaining current indoor temperature information；
Step 102: judge whether room temperature is less than the first temperature threshold of setting, if so, step 103 is executed, it is no
Then, step 104 is executed；
Step 103: control internal combustion engine, air-conditioner set and boiler are opened, and are controlled air-conditioner set and be in for hot working,
Organic rankine cycle system is controlled simultaneously and refrigeration machine is shut down；
Step 104: judging whether room temperature is not less than the first temperature threshold of setting and is less than the second temperature of setting
Otherwise threshold value, executes step 106 if so, executing step 105；
Step 105: control internal combustion engine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, simultaneously
Organic rankine cycle system, boiler and refrigeration machine is controlled to shut down；
Step 106: judging whether room temperature is not less than the second temperature threshold value of setting and is less than the third temperature of setting
Otherwise threshold value, executes step 108 if so, executing step 107；
Step 107: control internal combustion engine and organic rankine cycle system are opened, while controlling air-conditioner set, boiler and refrigeration
Machine is shut down；
Step 108: judging whether room temperature is not less than the third temperature threshold of setting and is less than the 4th temperature of setting
Otherwise threshold value, executes step 110 if so, executing step 109；
Step 109: control internal combustion engine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, simultaneously
Organic rankine cycle system, boiler and refrigeration machine is controlled to shut down；
Step 110: control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled air-conditioner set and be in cooling supply work shape
State, while controlling organic rankine cycle system and boiler down.
It should be pointed out that the step of cogeneration energy supply method of the present invention implementation sequence be not limited in Fig. 2 it is cited
Mode, above-mentioned steps can be adjusted flexibly according to the actual situation, to meet building to the energy requirement of cool and thermal power.
As shown in figure 3, being based on identical inventive concept, the embodiment of the invention also provides a kind of energy supplies of cogeneration to fill
It sets, comprising:
Equipment 100 is obtained, for obtaining indoor temperature information；
Equipment 200 is controlled, is used for
When room temperature is not less than the first temperature threshold set and is less than the second temperature threshold value of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine；
When room temperature is not less than the second temperature threshold value set and is less than the third temperature threshold of setting, internal combustion is controlled
Machine and organic rankine cycle system are opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature is not less than the third temperature threshold set and is less than four temperature threshold of setting, internal combustion is controlled
Machine and air-conditioner set are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler
It is shut down with refrigeration machine.
Using technical solution of the embodiment of the present invention, can be somebody's turn to do according to commercial building in the cold and hot electricity demanding determination in different times
The operating mode of cogeneration power supply device, the power of internal combustion engine output are transferred to the first generator for generating electricity, discharge
Flue gas can be supplied in summer or winter to air-conditioner set, to carry out refrigeration or heat supply, and in transition season Shi Zeke
Flue gas is delivered to organic rankine cycle system, so that organic rankine cycle system is done work using waste heat and power is transferred to the
Two generators are for generating electricity, and compared with prior art, still energize using the cogeneration power supply device in transition season,
The fume afterheat of internal combustion engine can be made full use of to generate electricity, therefore the program improves the utilization of cogeneration energy supplying system
Rate improves the full annual utilization hours of cogeneration energy supplying system, reduces energy supply cost.
Preferably, equipment is controlled, is further used for controlling internal combustion when room temperature is less than the first temperature threshold of setting
Machine, air-conditioner set and boiler are opened, and are controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system
It is shut down with refrigeration machine.
Preferably, equipment is controlled, is further used for when four temperature threshold of the room temperature not less than setting, in control
Combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled air-conditioner set and be in cooling supply working condition, while controlling Organic Rankine Cycle
System and boiler down.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of cogeneration energy supplying system, which is characterized in that including internal combustion engine, air-conditioner set, organic rankine cycle system
And first generator and the second generator, in which:
The internal combustion engine has power output end and flue gas output end, and the power output end is connect with the first generator；
The air-conditioner set is connect with the flue gas output end；
The organic rankine cycle system includes by the sequentially connected evaporator of pipeline, expanding machine, condenser and working medium pump, institute
Stating has working medium in pipeline, the evaporator is connect with the flue gas output end, and the expanding machine is connect with the second generator；
Cogeneration energy supplying system further include: boiler and refrigeration machine；
Temperature sensor is set to interior, for detecting indoor temperature information；
Controller, it is electric with internal combustion engine, air-conditioner set, organic rankine cycle system, boiler, refrigeration machine and temperature sensor respectively
Connection, is used for
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and control sky
It adjusts unit to be in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown；
When room temperature not less than setting the first temperature threshold and be less than setting second temperature threshold value when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When room temperature not less than setting second temperature threshold value and be less than setting third temperature threshold when, control internal combustion engine and
Organic rankine cycle system is opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature not less than setting third temperature threshold and be less than setting four temperature thresholds when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled
Air-conditioner set processed is in cooling supply working condition, while controlling organic rankine cycle system and boiler down；
Wherein, the first temperature threshold, second temperature threshold value, third temperature threshold and the 4th temperature threshold need to meet: the first temperature
Threshold value, second temperature threshold value, third temperature threshold and the 4th temperature threshold are sequentially increased.
2. cogeneration energy supplying system as described in claim 1, which is characterized in that further include being connected to the cylinder sleeve of internal combustion engine
First Heat Exchanger.
3. cogeneration energy supplying system as claimed in claim 2, which is characterized in that it further include the second heat exchanger, described
There is two heat exchangers the hot flow path that is isolated and cold runner, the hot flow path to be connected to First Heat Exchanger, the cold runner with build
The heat supply backwater channel connection built.
4. cogeneration energy supplying system as claimed in claim 2, which is characterized in that the air-conditioner set and First Heat Exchanger
Output end of hot water connection.
5. a kind of cogeneration energy supply method, which is characterized in that the cogeneration energy supply method is applied to cold and hot Electricity Federation
It produces in energy supplying system, cogeneration energy supplying system includes internal combustion engine, air-conditioner set, organic rankine cycle system and the first hair
Motor and the second generator, boiler and refrigeration machine, in which: the internal combustion engine has power output end and flue gas output end, described
Power output end is connect with the first generator；The air-conditioner set is connect with the flue gas output end；The Organic Rankine Cycle
System includes by the sequentially connected evaporator of pipeline, expanding machine, condenser and working medium pump, and the pipeline is interior to have working medium, institute
It states evaporator to connect with the flue gas output end, the expanding machine is connect with the second generator；
The cogeneration energy supply method includes:
Obtain current indoor temperature information；
When room temperature not less than setting the first temperature threshold and be less than setting second temperature threshold value when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When room temperature not less than setting second temperature threshold value and be less than setting third temperature threshold when, control internal combustion engine and
Organic rankine cycle system is opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature not less than setting third temperature threshold and be less than setting four temperature thresholds when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down.
6. cogeneration energy supply method as claimed in claim 5, which is characterized in that further include:
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and control sky
It adjusts unit to be in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown.
7. cogeneration energy supply method as claimed in claim 5, which is characterized in that further include:
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and are controlled
Air-conditioner set processed is in cooling supply working condition, while controlling organic rankine cycle system and boiler down.
8. a kind of cogeneration power supply device, which is characterized in that the cogeneration power supply device is applied to cold and hot Electricity Federation
It produces in energy supplying system, cogeneration energy supplying system includes internal combustion engine, air-conditioner set, organic rankine cycle system and the first hair
Motor and the second generator, boiler and refrigeration machine, in which: the internal combustion engine has power output end and flue gas output end, described
Power output end is connect with the first generator；The air-conditioner set is connect with the flue gas output end；The Organic Rankine Cycle
System includes by the sequentially connected evaporator of pipeline, expanding machine, condenser and working medium pump, and the pipeline is interior to have working medium, institute
It states evaporator to connect with the flue gas output end, the expanding machine is connect with the second generator；
The cogeneration power supply device includes:
Equipment is obtained, for obtaining indoor temperature information；
Equipment is controlled, is used for
When room temperature not less than setting the first temperature threshold and be less than setting second temperature threshold value when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in for hot working, while controlling organic rankine cycle system, boiler and system
Cold is shut down；
When room temperature not less than setting second temperature threshold value and be less than setting third temperature threshold when, control internal combustion engine and
Organic rankine cycle system is opened, while being controlled air-conditioner set, boiler and refrigeration machine and being shut down；
When room temperature not less than setting third temperature threshold and be less than setting four temperature thresholds when, control internal combustion engine and
Air-conditioner set is opened, and is controlled air-conditioner set and be in cooling supply working condition, while controlling organic rankine cycle system, boiler and system
Cold is shut down.
9. cogeneration power supply device as claimed in claim 8, which is characterized in that the control equipment is further used for
When room temperature is less than the first temperature threshold of setting, control internal combustion engine, air-conditioner set and boiler are opened, and control air conditioner
Group is in for hot working, while controlling organic rankine cycle system and refrigeration machine shutdown.
10. cogeneration power supply device as claimed in claim 8, which is characterized in that the control equipment is further used for
When four temperature threshold of the room temperature not less than setting, control internal combustion engine, air-conditioner set and refrigeration machine are opened, and control sky
It adjusts unit to be in cooling supply working condition, while controlling organic rankine cycle system and boiler down.
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| CN108775967B (en) * | 2018-07-18 | 2020-07-28 | 电子科技大学 | Digital temperature sensor |
| CN110206698A (en) * | 2019-05-09 | 2019-09-06 | 华电电力科学研究院有限公司 | A kind of internal combustion engine flue gas and jacket water UTILIZATION OF VESIDUAL HEAT IN organic rankine cycle system |
| CN111102066A (en) * | 2019-12-13 | 2020-05-05 | 华鼎电源(天津)有限公司 | Gas generator system for combined production of heat, power and cold and control method thereof |
| CN112260316B (en) * | 2020-10-20 | 2022-05-03 | 浙江大学 | Off-grid type multifunctional complementary combined cooling, heating and power and humidity system and method thereof |
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