CN114777354A - Distributed cooling, heating and power supply system and supply method - Google Patents
Distributed cooling, heating and power supply system and supply method Download PDFInfo
- Publication number
- CN114777354A CN114777354A CN202210417986.7A CN202210417986A CN114777354A CN 114777354 A CN114777354 A CN 114777354A CN 202210417986 A CN202210417986 A CN 202210417986A CN 114777354 A CN114777354 A CN 114777354A
- Authority
- CN
- China
- Prior art keywords
- power
- power supply
- cold
- heating
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 85
- 238000001816 cooling Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 233
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000003786 synthesis reaction Methods 0.000 claims description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 2
- 230000008016 vaporization Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- 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
-
- 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
- F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/002—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for driven by internal combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to the technical field of energy supply, in particular to a distributed cooling, heating and power supply system and a supply method. This distributing type cooling, heating and power supply system includes: a prime mover for converting chemical energy of the fuel into mechanical energy; the cold and hot electricity supply mechanism is connected with the motive power mechanism and comprises an electric power supply mechanism and a cold and hot supply mechanism which are arranged in parallel. The power supply mechanism is used for converting part of mechanical energy provided by the prime power mechanism into electric energy to supply power to the user side; the cold and heat supply mechanism is used for converting another part of mechanical energy provided by the motive power mechanism into heat energy to supply cold or heat for the user end. When carrying out the supply of cold and hot electricity for the user side through above distributing type cold and hot electricity supply system, can reduce energy conversion number of times, adjust alone power supply and cold and hot supply, the flexibility is higher, can respond in time the user side demand and make the adjustment.
Description
Technical Field
The invention relates to the technical field of energy supply, in particular to a distributed cooling, heating and power supply system and a supply method.
Background
The distributed cold, heat and electricity supply system is a modern energy supply system, and compared with a traditional centralized energy supply system, the distributed cold, heat and electricity supply system is arranged close to the side of a user end, is flexible in arrangement and various in structure, can integrally coordinate and meet the requirements of cold consumption, heat consumption and electricity consumption of the user end, and has the advantages of high energy efficiency, cleanness, environmental protection, good safety, good economic benefit and the like.
However, for the existing distributed cooling, heating and power supply system, the number of times of energy conversion is often large, the flexibility is poor, and the overall robustness of the system is low. As a result, when the demand of the user side changes, the existing distributed cooling and heating system cannot respond to the demand of the user side in a timely manner to make adjustments.
Disclosure of Invention
Therefore, the present invention provides a distributed cooling and heating power supply system and a distributed cooling and heating power supply method, which can overcome the defect that the distributed cooling and heating power supply system in the prior art cannot respond to the requirement of the user end in time to make adjustments.
In order to solve the above problems, the present invention provides a distributed cooling and heating power supply system, which includes a motive power mechanism and a cooling and heating power supply mechanism. The prime power mechanism is used for converting chemical energy of the fuel into mechanical energy; the cold, heat and electricity supply mechanism is connected with the prime power mechanism and comprises a power supply mechanism and a cold and heat supply mechanism which are arranged in parallel; the power supply mechanism is used for converting part of mechanical energy provided by the prime power mechanism into electric energy to supply power to the user side; the cold and hot supply mechanism is used for converting another part of mechanical energy provided by the motive power mechanism into heat energy to supply cold or heat for the user end.
Optionally, the distributed cooling, heating and power supply system further comprises a power distribution mechanism. The power distribution mechanism is arranged between the motive power mechanism and the cold and heat power supply mechanism and is used for adjusting the proportion of mechanical energy supplied to the power supply mechanism and the cold and heat supply mechanism by the motive power mechanism.
Optionally, the distributed cooling, heating and power supply system further comprises a feedback control mechanism. The feedback control mechanism is respectively in communication connection with the user side and the power distribution mechanism, and can control the power distribution mechanism to adjust the proportion of mechanical energy supplied to the electric power supply mechanism and the cold and hot supply mechanism by the motive power mechanism according to the electric load requirement and the cold and hot load requirement of the user side.
Optionally, a plurality of motive power mechanisms are provided, the plurality of motive power mechanisms are arranged in parallel, and each motive power mechanism is connected with the cooling, heating and power supply mechanism.
Optionally, the distributed cooling, heating and power supply system further comprises a power synthesis mechanism. The power synthesis mechanism is arranged between the plurality of motive power mechanisms and the cold-heat-electricity supply mechanism and is used for synthesizing mechanical energy provided by the plurality of motive power mechanisms.
Optionally, the prime mover mechanism comprises an internal combustion engine; the power supply mechanism comprises a generator, and an input shaft of the generator is in transmission connection with an output shaft of the internal combustion engine; the cold and hot supply mechanism comprises a compressor, the compressor is connected with a generator in parallel, and an input shaft of the compressor is in transmission connection with an output shaft of the internal combustion engine.
Optionally, the cold and heat supply mechanism further comprises a condenser, a throttle valve and an evaporator. The condenser is connected with the compressor and is used for condensing the refrigerant from the compressor and releasing heat to the outside; the throttling valve is connected with the condenser and used for throttling and depressurizing the refrigerant; the evaporator is connected with the throttling valve and used for gasifying the refrigerant and absorbing heat from the outside; the evaporator is also connected to the compressor to deliver refrigerant to the compressor to form a circulation loop.
The invention also provides a distributed cooling and heating power supply method, which uses the distributed cooling and heating power supply system to supply cooling and heating power to a user side, and the distributed cooling and heating power supply method comprises the following steps: converting chemical energy of the fuel into mechanical energy through a prime power mechanism; part of mechanical energy provided by the prime power mechanism is converted into electric energy through the power supply mechanism to supply power to the user side; the other part of mechanical energy provided by the prime power mechanism is converted into heat energy through the cold and heat supply mechanism to supply cold or heat for the user side.
Optionally, the distributed cooling, heating and power supply method further includes: according to the ratio of the electric load demand and the cold and hot load demand of the user end, the ratio of the mechanical energy supplied to the electric power supply mechanism and the cold and hot supply mechanism by the motive power mechanism is adjusted through the power distribution mechanism.
Optionally, the distributed cooling, heating and power supply method further includes: mechanical energy is provided for the cold, heat and electricity supply mechanism through a plurality of motive power mechanisms which are arranged in parallel, and the running quantity of the motive power mechanisms is adjusted according to the sum of the electric load demand and the cold and heat load demand of a user side.
The invention has the following advantages:
1. the invention provides a distributed cold, heat and electricity supply system, which can directly provide mechanical energy for an electric power supply mechanism and a cold and heat supply mechanism through a prime power mechanism respectively, then convert the mechanical energy into electric energy through the electric power supply mechanism, convert the mechanical energy into heat energy through the cold and heat supply mechanism, and has less overall energy conversion times. Meanwhile, the power supply mechanism and the cold and hot supply mechanism are relatively independent, so that power supply and cold and hot supply can be independently adjusted, the flexibility is higher, the response speed of the system is higher, and the overall robustness is higher.
2. The power distribution mechanism arranged between the motive power mechanism and the cold and heat power supply mechanism can adjust the proportion of the mechanical energy supplied to the power supply mechanism and the cold and heat power supply mechanism by the motive power mechanism, so that the distributed cold and heat power supply system can better respond to the requirements of a user terminal.
3. The invention also provides a distributed cooling, heating and power supply method, which can realize lower energy conversion times, realize independent adjustment of power supply and cooling and heating supply, has higher flexibility and can respond to the requirements of the user side in time to make adjustment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram illustrating a distributed cooling, heating and power supply system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram illustrating a distributed cooling, heating and power supply system according to a second embodiment of the present invention.
Description of the reference numerals:
100. a user side;
1. a prime mover mechanism; 11. an internal combustion engine; 12. a gearbox; 13. a coupling; 2. a power split mechanism; 3. a cooling, heating and power supply mechanism; 31. a power supply mechanism; 32. a cold and heat supply mechanism; 321. a compressor; 322. a condenser; 323. a throttle valve; 324. an evaporator; 325. a water pump; 4. a feedback control mechanism; 5. and a power synthesis mechanism.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
In the present embodiment, as shown in fig. 1, the distributed cooling, heating and power supply system includes a motive power mechanism 1 and a cooling, heating and power supply mechanism 3 connected to each other, and the cooling, heating and power supply mechanism 3 includes a power supply mechanism 31 and a cooling, heating and power supply mechanism 32 connected in parallel.
The prime power mechanism 1 is used for converting chemical energy of fuel into mechanical energy; the power supply mechanism 31 is configured to convert part of the mechanical energy provided by the prime power mechanism 1 into electrical energy to supply power to the user end 100; the cold and heat supply mechanism 32 is used to convert another part of the mechanical energy provided by the motive power mechanism 1 into heat energy to supply cold or heat to the user terminal 100.
According to the above arrangement, when the distributed cooling, heating and power supply system is used, the motive power mechanism 1 can directly provide mechanical energy for the power supply mechanism 31 and the cold and heat supply mechanism 32, the mechanical energy is converted into electric energy through the power supply mechanism 31, and the mechanical energy is converted into heat energy through the cold and heat supply mechanism 32, so that the overall energy conversion frequency is low. Meanwhile, since the power supply mechanism 31 and the cold and hot supply mechanism 32 are relatively independent, when the user end 100 electrical load demand (i.e., the electrical demand) changes, the power supply can be independently adjusted, and when the user end 100 cold and hot load demand (i.e., the cold and hot demands) changes, the cold and hot supply can be independently adjusted, so that the adjustment flexibility is higher, the system response speed is higher, and the overall robustness is higher.
In addition, when the number of times of energy conversion is small, it is ensured that the overall energy utilization rate of the distributed cooling, heating and power supply system is maintained at a high level.
Further, as shown in fig. 1, the distributed cooling, heating and power supply system further includes a power distribution mechanism 2. The power split mechanism 2 is provided between the motive power mechanism 1 and the cooling/heating power supply mechanism 3, and is used to adjust the ratio of mechanical energy supplied from the motive power mechanism 1 to the electric power supply mechanism 31 and the cooling/heating power supply mechanism 32, thereby enabling the system to better respond to the demand of the user terminal 100.
For example, when the user end 100 has a large demand for electric load and a small demand for cooling/heating load, the power split device 2 may increase the ratio of the mechanical energy supplied from the motive power mechanism 1 to the electric power supply mechanism 31, and decrease the ratio of the mechanical energy supplied from the motive power mechanism 1 to the cooling/heating mechanism 32, that is, more mechanical energy of the motive power mechanism 1 is supplied to the electric power supply mechanism 31; conversely, when the user end 100 requires less electric load and requires more cooling/heating load, the power split device 2 can decrease the ratio of the mechanical energy supplied from the motive power mechanism 1 to the electric power supply mechanism 31 and increase the ratio of the mechanical energy supplied from the motive power mechanism 1 to the cooling/heating mechanism 32, that is, more mechanical energy of the motive power mechanism 1 is supplied to the cooling/heating mechanism 32.
In order to better respond to the demand of the user terminal 100, as shown in fig. 1, a feedback control mechanism 4 is further provided in the distributed cooling, heating and power supply system. The feedback control mechanism 4 is connected to the user end 100 and the power distribution mechanism 2 in communication, and is capable of controlling the power distribution mechanism 2 to adjust the ratio of the mechanical energy supplied by the motive power mechanism 1 to the electric power supply mechanism 31 and the cold and hot supply mechanism 32 according to the electric load demand and the cold and hot load demand of the user end 100.
In this embodiment, the user terminal 100 is provided with a terminal system, and the terminal system stores information of the electrical load demand and the cold and hot load demand of the user terminal 100, and the information of the demand may be relatively fixed or may be adjusted in real time. The feedback control mechanism 4 is configured as an electronic controller, and the electronic controller is connected to the terminal system in a communication manner, and can acquire information about the electrical load demand and the cold and heat load demand of the user terminal 100, and feed back the information about these demands to the power split mechanism 2, so as to control the power split mechanism 2 to adjust the ratio of the mechanical energy supplied to the power supply mechanism 31 and the cold and heat supply mechanism 32. Illustratively, the electronic controller may be a PLC, which is not described herein since it is a prior art.
Next, a specific configuration of the distributed cooling and heating system provided in the present embodiment will be described.
Referring to fig. 1, the prime mover 1 includes an internal combustion engine 11. The internal combustion engine 11 may be an internal combustion engine 11 using fuel such as a diesel engine or a gasoline engine, or may be an internal combustion engine 11 using gas such as a natural gas engine. In order to facilitate the driving connection of the internal combustion engine 11 with other mechanisms, a gearbox 12 and a coupling 13 are also arranged in the prime mover 1. Illustratively, the transmission 12 is a change speed gearbox.
The electric power supply mechanism 31 comprises a generator, an input shaft of which is in transmission connection with an output shaft of the internal combustion engine 11; the cold and heat supply mechanism 32 includes a compressor 321, the compressor 321 is connected in parallel with the generator, and an input shaft of the compressor 321 is in transmission connection with an output shaft of the internal combustion engine 11.
Further, with the power split mechanism 2, it is provided as a transfer. The transfer case is of a gear transmission structure and comprises an input shaft and at least two output shafts.
In this case, the driving power mechanism 1, the power split mechanism 2, and the cooling/heating power supply mechanism 3 are integrally provided in a transmission connection manner as follows: an output shaft of the internal combustion engine 11, a gearbox 12, a coupling 13 and an input shaft of the transfer case are sequentially in transmission connection, one output shaft of the transfer case is in transmission connection with an input shaft of the generator, and the other output shaft of the transfer case is in transmission connection with an input shaft of the compressor 321.
After power transmission and distribution are realized, the generator can obtain partial mechanical energy and directly convert the mechanical energy into electric energy, and then the user terminal 100 is supplied with power through facilities such as electric wires. The compressor 321 can convert part of the mechanical energy into gas internal energy, and then the gas internal energy is converted into heat energy by other parts of the cooling and heating mechanism 32 to supply cooling or heating to the user end 100.
In this embodiment, a refrigerant flows in the compressor 321. The compressor 321 operates to compress refrigerant into refrigerant vapor of high temperature and high pressure. Further, referring to fig. 1, the cold and heat supplying mechanism 32 further includes a condenser 322, a throttle valve 323, and an evaporator 324. The condenser 322 is connected to the compressor 321, and the refrigerant (refrigerant vapor) from the compressor 321 can be condensed by the condenser 322 and release heat to the outside; the throttle valve 323 is connected with the condenser 322 and used for throttling and depressurizing the refrigerant; the evaporator 324 is connected with a throttle valve 323 for vaporizing the refrigerant and absorbing heat from the outside; the evaporator 324 is also connected to the compressor 321 to feed the refrigerant to the compressor 321 to form a circulation circuit.
In the present embodiment, a refrigerant passage through which refrigerant circulates is provided between the compressor 321, the condenser 322, the throttle valve 323, and the evaporator 324.
Further, for the convenience of the user end 100, the user end 100 is connected to the condenser 322 through a water return pipe; a water pump 325 is provided in the hot and cold water supply mechanism 32, and the water pump 325 is connected to the condenser 322. The condenser 322 may be supplied with heat exchange water through the water return pipe, and the condenser 322 may exchange heat between the heat exchange water and the refrigerant to obtain hot water, and the water pump 325 may supply the hot water to the user terminal 100, which may be more convenient for the user terminal 100 to use.
In other embodiments, when the cooling and heating mechanism 32 is used, the user terminal 100 can be directly supplied with heat through the condenser 322, and the user terminal 100 can be directly supplied with cold through the evaporator 324.
In this embodiment, the generator can realize 30% -100% of output power adjustment, and the condenser 322 can realize 0-100% of output power adjustment. The ratio of the output powers of the cold and heat supply means 32 and the electric power supply means 31 is set as a thermoelectric ratio as a whole, and the thermoelectric ratio can be controlled by the feedback control means 4 to vary within the interval of 0 to 2.3.
The embodiment also provides a distributed cooling and heating power supply method, which uses the distributed cooling and heating power supply system as described above, and the method includes the following steps: converting chemical energy of the fuel into mechanical energy by the motive power mechanism 1; converting part of the mechanical energy provided by the motive power mechanism 1 into electric energy through the electric power supply mechanism 31 to supply power to the user terminal 100; another part of the mechanical energy provided by the motive power mechanism 1 is converted into heat energy by the cold and heat supply mechanism 32 to supply cold or heat to the user terminal 100.
By the method, lower energy conversion times can be realized, independent adjustment of power supply and cold and hot supply can be realized, flexibility is higher, and adjustment can be performed in response to the requirements of the user terminal 100 in more time.
Further, the distributed cooling, heating and power supply method further comprises: the ratio of the mechanical energy supplied by motive power mechanism 1 to electric power supply mechanism 31 and cold and heat supply mechanism 32 is adjusted by power split mechanism 2 according to the ratio of the electric load demand and the cold and heat load demand of user terminal 100. For example, when the ratio of the electric load demand to the cooling/heating load demand is large, the ratio of the mechanical energy supplied to the electric power supply mechanism 31 can be appropriately increased, which indicates that the electric power demand is large; conversely, when the ratio of the electric load demand to the cooling/heating load demand is smaller, indicating that the cooling/heating demand is greater, the ratio of the mechanical energy supplied to the cooling/heating mechanism 32 can be appropriately increased.
At the adjustment timing, the adjustment of the above ratio may be completed before the mechanical energy is distributed to the electric power supply mechanism 31 and the cold and heat supply mechanism 32; it is also possible to distribute the mechanical energy to the power supply 31 and the cold and heat supply 32 in a certain ratio and then to perform the ratio adjustment during the operation of the system.
Example two
The present embodiment provides a distributed cooling and heating power supply system, as shown in fig. 2, which is basically the same as the distributed cooling and heating power supply system provided in the first embodiment, and the main differences are as follows: a plurality of prime power mechanisms 1 are provided, and the plurality of prime power mechanisms 1 are arranged in parallel. In this embodiment, any of the motive power mechanisms 1 is still in transmission connection with the cooling, heating and power supply mechanism 3.
When a plurality of prime power mechanisms 1 are provided, the total operation number of the prime power mechanisms 1 can be adjusted by independently controlling a single prime power mechanism 1, so that the total output power of the plurality of prime power mechanisms 1 can be more conveniently controlled, and the cooling, heating and power requirements of the user terminal 100 can be better matched. For example, when the sum of the electrical load demand and the cooling and heating load demand of user end 100 is large, a large number of prime power mechanisms 1 may be controlled to operate, so as to ensure that the total output power of prime power mechanisms 1 can ensure the demand of user end 100; when the sum of the electrical load demand and the cooling and heating load demand of the user end 100 is small, a small number of the motive power mechanisms 1 can be controlled to operate, so as to avoid waste caused by excessive total output power of the motive power mechanisms 1.
Further, as shown in fig. 2, a power combining mechanism 5 is provided in the distributed cooling, heating, and power supply system. The power combining means 5 is provided between the plurality of motive power mechanisms 1 and the cooling/heating power supply means 3, and combines the mechanical energy supplied from the plurality of motive power mechanisms 1, and supplies the combined mechanical energy to the cooling/heating power supply means 3.
In the present embodiment, the power combining mechanism 5 is provided upstream of the power split mechanism 2 to supply the combined mechanical energy to the power split mechanism 2 first, and then distribute the mechanical energy to the electric power supply mechanism 31 and the cold and hot supply mechanism 32 via the power split mechanism 2. Preferably, the power combining mechanism 5 may be a power combiner, which is a planetary gear transmission mechanism including a plurality of input shafts and one output shaft.
In this embodiment, as shown in fig. 2, the feedback control mechanism 4 is also connected to the plurality of prime power mechanisms 1 in a communication manner. The feedback control mechanism 4 can obtain the sum of the electric load demand and the cold and hot load demand of the user terminal 100, and further transmit information to the prime power mechanism 1 to adjust the operation number of the prime power mechanism 1.
Correspondingly, the present embodiment further provides a distributed cooling and heating power supply method, which is basically the same as the distributed cooling and heating power supply method provided in the first embodiment, and the main difference is that the method further includes: mechanical energy is provided for the cooling, heating and power supply mechanism 3 through a plurality of motive power mechanisms 1 arranged in parallel, and the operation quantity of the motive power mechanisms 1 is adjusted according to the sum of the electric load demand and the cooling and heating load demand of the user terminal 100. The advantages of this method can be referred to the above, and will not be described herein.
In the adjustment time, the adjustment of the operation quantity of the prime power mechanism 1 can be completed before the mechanical energy is provided for the cold, heat and electricity supply mechanism 3; or a certain number of the motive power mechanisms 1 may be controlled to operate first, and then the operating number of the motive power mechanisms 1 may be adjusted according to the total cooling, heating and power requirements of the user end 100 during the system operation process.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (10)
1. A distributed cooling, heating and power supply system, comprising:
a prime mover (1) for converting chemical energy of the fuel into mechanical energy;
a cooling and heating power supply mechanism (3) connected to the motive power mechanism (1), the cooling and heating power supply mechanism (3) including a power supply mechanism (31) and a cooling and heating power supply mechanism (32) arranged in parallel;
wherein the power supply mechanism (31) is used for converting part of mechanical energy provided by the prime power mechanism (1) into electric energy to supply power to a user end (100); the cold and heat supply mechanism (32) is used for converting another part of mechanical energy provided by the motive power mechanism (1) into heat energy to supply cold or heat for the user end (100).
2. The distributed cooling heating and heating power supply system according to claim 1, further comprising:
and a power distribution mechanism (2) provided between the motive power mechanism (1) and the cold/heat/electricity supply mechanism (3), wherein the power distribution mechanism (2) is configured to adjust a ratio of mechanical energy supplied from the motive power mechanism (1) to the electric power supply mechanism (31) and the cold/heat supply mechanism (32).
3. The distributed cooling heating power supply system according to claim 2, further comprising:
a feedback control mechanism (4) communicatively connected to the user terminal (100) and the power distribution mechanism (2), respectively, wherein the feedback control mechanism (4) is configured to control the power distribution mechanism (2) to adjust the proportion of the mechanical energy supplied by the motive power mechanism (1) to the electric power supply mechanism (31) and the cold and hot supply mechanism (32) according to the electric load demand and the cold and hot load demand of the user terminal (100).
4. The distributed cooling and heating power supply system according to any one of claims 1 to 3, wherein a plurality of the motive power mechanisms (1) are provided, a plurality of the motive power mechanisms (1) are provided in parallel, and each of the motive power mechanisms (1) is connected to the cooling and heating power supply mechanism (3).
5. The distributed cooling heating and heating power supply system according to claim 4, further comprising:
and the power synthesis mechanism (5) is arranged between the plurality of motive power mechanisms (1) and the cold, heat and electricity supply mechanism (3), and the power synthesis mechanism (5) is used for synthesizing mechanical energy provided by the plurality of motive power mechanisms (1).
6. The distributed cold and heat power supply system according to any one of claims 1 to 3, wherein the motive power mechanism (1) comprises an internal combustion engine (11);
the electric power supply mechanism (31) comprises a generator, and an input shaft of the generator is in transmission connection with an output shaft of the internal combustion engine (11);
the cold and heat supply mechanism (32) comprises a compressor (321), the compressor (321) is connected with the generator in parallel, and an input shaft of the compressor (321) is in transmission connection with an output shaft of the internal combustion engine (11).
7. The distributed cold and heat power supply system according to claim 6, wherein said cold and heat supply mechanism (32) further comprises:
a condenser (322) connected to the compressor (321) for condensing the refrigerant from the compressor (321) and releasing heat to the outside;
a throttle valve (323) connected with the condenser (322) for throttling and depressurizing the refrigerant;
an evaporator (324) connected to the throttle valve (323) for vaporizing the refrigerant and absorbing heat from the outside;
the evaporator (324) is also connected to the compressor (321) to feed the refrigerant to the compressor (321) forming a circulation loop.
8. A distributed cooling, heating and power supply method, wherein the distributed cooling, heating and power supply system according to any one of claims 1-7 is used for supplying cooling, heating and power to a user terminal (100), and the distributed cooling, heating and power supply method comprises:
converting chemical energy of the fuel into mechanical energy through a motive power mechanism (1);
converting part of mechanical energy provided by the motive power mechanism (1) into electric energy through an electric power supply mechanism (31) to supply power to the user end (100);
another part of the mechanical energy provided by the motive power mechanism (1) is converted into heat energy through a cold and heat supply mechanism (32) to supply cold or heat for the user end (100).
9. The distributed cooling heating and power supply method according to claim 8, further comprising:
the proportion of the mechanical energy supplied to the electric power supply mechanism (31) and the cold and hot supply mechanism (32) by the motive power mechanism (1) is adjusted by a power distribution mechanism (2) according to the ratio of the electric load demand and the cold and hot load demand of the user terminal (100).
10. The distributed cooling and heating power supply method according to claim 8 or 9, further comprising:
mechanical energy is provided for the cold and heat power supply mechanism (3) through a plurality of motive power mechanisms (1) which are arranged in parallel, and the operation quantity of the motive power mechanisms (1) is adjusted according to the sum of the electric load demand and the cold and heat load demand of the user side (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210417986.7A CN114777354A (en) | 2022-04-20 | 2022-04-20 | Distributed cooling, heating and power supply system and supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210417986.7A CN114777354A (en) | 2022-04-20 | 2022-04-20 | Distributed cooling, heating and power supply system and supply method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114777354A true CN114777354A (en) | 2022-07-22 |
Family
ID=82431084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210417986.7A Pending CN114777354A (en) | 2022-04-20 | 2022-04-20 | Distributed cooling, heating and power supply system and supply method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114777354A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201123691A (en) * | 2009-12-25 | 2011-07-01 | Energy Spring Tech Inc | Power generator-heat pump complex apparatus. |
| CN105841390A (en) * | 2016-03-31 | 2016-08-10 | 山东省食品发酵工业研究设计院 | Gas-driven air source heat pump heat supply unit for central heating system |
| CN108561228A (en) * | 2018-03-26 | 2018-09-21 | 新兴能源装备股份有限公司 | A kind of moveable mini gas distributed energy resource system |
| CN208186900U (en) * | 2018-03-06 | 2018-12-04 | 华电电力科学研究院有限公司 | A kind of distributed energy resource system based on Demand-side energy supply |
| CN109297211A (en) * | 2018-09-28 | 2019-02-01 | 蓝焰高科（天津）燃气技术有限公司 | Intelligent cold-hot chp system |
| CN109826708A (en) * | 2018-12-29 | 2019-05-31 | 东莞理工学院 | A kind of compressed-air energy-storage system and application method of advanced distributed multiple-supplying |
| CN111811206A (en) * | 2020-07-07 | 2020-10-23 | 上海电力大学 | Gas combined cooling heating and power supply distributed energy system |
| CN215863670U (en) * | 2021-01-22 | 2022-02-18 | 中益能(北京)供热技术有限公司 | Steam-electricity combined supply device and heat supply system |
-
2022
- 2022-04-20 CN CN202210417986.7A patent/CN114777354A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201123691A (en) * | 2009-12-25 | 2011-07-01 | Energy Spring Tech Inc | Power generator-heat pump complex apparatus. |
| CN105841390A (en) * | 2016-03-31 | 2016-08-10 | 山东省食品发酵工业研究设计院 | Gas-driven air source heat pump heat supply unit for central heating system |
| CN208186900U (en) * | 2018-03-06 | 2018-12-04 | 华电电力科学研究院有限公司 | A kind of distributed energy resource system based on Demand-side energy supply |
| CN108561228A (en) * | 2018-03-26 | 2018-09-21 | 新兴能源装备股份有限公司 | A kind of moveable mini gas distributed energy resource system |
| CN109297211A (en) * | 2018-09-28 | 2019-02-01 | 蓝焰高科（天津）燃气技术有限公司 | Intelligent cold-hot chp system |
| CN109826708A (en) * | 2018-12-29 | 2019-05-31 | 东莞理工学院 | A kind of compressed-air energy-storage system and application method of advanced distributed multiple-supplying |
| CN111811206A (en) * | 2020-07-07 | 2020-10-23 | 上海电力大学 | Gas combined cooling heating and power supply distributed energy system |
| CN215863670U (en) * | 2021-01-22 | 2022-02-18 | 中益能(北京)供热技术有限公司 | Steam-electricity combined supply device and heat supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7629701B2 (en) | Modular power generating system | |
| CN111164276A (en) | System and method for converting electrical energy into thermal energy and for storing thermal energy | |
| EP1016775A2 (en) | Waste heat recovery in an organic energy converter using an intermediate liquid cycle | |
| CN110635150B (en) | Thermal management system and method for combination of multiple fuel cell modules | |
| CN108418251A (en) | A kind of garden grade comprehensive energy energy supplying system | |
| WO2008082388A1 (en) | A power split device for a combined heat and power (chp) system | |
| CN102395787A (en) | Method for increasing the net electric power of solar thermal power stations | |
| JPH084586A (en) | Cogeneration system | |
| CN105757978B (en) | A kind of boat-carrying heat pump water heater system and heating method | |
| CN102373998B (en) | System and method for combined supplying of living hot water/electricity by combining fossil fuel with terrestrial heat | |
| CN114777354A (en) | Distributed cooling, heating and power supply system and supply method | |
| CN116123519A (en) | Coal-based poly-generation flexible variable load system and operation method thereof | |
| CN214065297U (en) | Heating system based on natural gas | |
| CN105752310B (en) | A kind of boat-carrying heat pump type air conditioning system and heating refrigerating method | |
| CN213807862U (en) | Combined cycle power plant natural gas pressure energy in-plant comprehensive utilization system | |
| CN115507405A (en) | Regional energy system and operation mode | |
| CN115183497A (en) | Cooling, heating and power supply system and cooling, heating and power supply method | |
| CN211625419U (en) | Solar energy and gas thermoelectric combined energy supply system | |
| CN112503764A (en) | Heating system based on natural gas | |
| US20130145762A1 (en) | Coupling system for a hybrid energy plant | |
| CN113048018A (en) | Electric heating and storage integrated wind turbine system and working method thereof | |
| US20060059911A1 (en) | Space heating and cooling system having a co-generator drive a geothermal connected heat pump | |
| CN110148064A (en) | Real-time new energy based on the response of stimulable type integration requirement assists consumption method | |
| US20220107095A1 (en) | Micro-Combined Heat and Power System with Exterior Generator and Heating System Compatibility and Method of Use | |
| UA144166U (en) | MULTIFUNCTIONAL POWER PLANT |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220722 |