CN111219909A - Distributed energy station regional energy supply method with energy storage device and combined with industrial waste heat - Google Patents
Distributed energy station regional energy supply method with energy storage device and combined with industrial waste heat Download PDFInfo
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- CN111219909A CN111219909A CN202010043303.7A CN202010043303A CN111219909A CN 111219909 A CN111219909 A CN 111219909A CN 202010043303 A CN202010043303 A CN 202010043303A CN 111219909 A CN111219909 A CN 111219909A
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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Abstract
The invention discloses a regional energy supply method of a distributed energy station containing an energy storage device and combined with industrial waste heat, wherein the system comprises a distributed energy station, a heat storage/cold storage tank, a separate transmission tank and a control device; the distributed energy station is connected with the heat storage/cold tank, the heat storage/cold tank is connected with the sub-transmission tank, and the sub-transmission tank is connected with each heat/cold energy user; the heat storage/cooling tank is connected with an industrial waste heat output end, and the control equipment is connected with the distributed energy station; the whole system preferentially utilizes industrial waste heat, and redundant energy is stored in the heat storage/cooling tank, so that the waste heat is utilized to the maximum extent. The distribution and transportation tank and the pipe network are optimized by a GEOsteiner method, the position of the distribution and transportation tank is determined, and the pipe network is more reasonable and economical. The whole system is intelligently operated and controlled by a central control system in the distributed energy station, so that the whole system can form sustainable energy supply. The heat supply/cold pipe network is further optimized, the layout is more reasonable, the energy consumption is further reduced, and the comprehensive utilization rate of energy is improved.
Description
Technical Field
The invention relates to a regional energy supply method of a distributed energy station containing an energy storage device and combining industrial waste heat, and a GEOsteiner algorithm is applied to enable the pipeline connection of a system to be optimal, so that the aims of energy conservation and consumption reduction are fully achieved.
Background
At present, in industrial production, about 1/3 energy is used in the industrial field, the industrial production is governed by the basic chemical principle, the heat utilization rate of the energy is generally not high, and a large amount of waste heat is discharged in a gas, liquid and solid form to cause loss in the production process despite the continuous introduction of energy-saving measures. Particularly for five high-energy-consumption manufacturing industrial departments such as petroleum coking, inorganic chemical industry, non-metal manufacturing, ferrous metal smelting, non-ferrous metal smelting and the like, the energy consumption of the industrial departments accounts for 2/3 of total industrial energy consumption, the space concentration of waste heat discharged by the five high-energy-consumption industrial departments is high, the grade of the waste heat is relatively high, and the recovery potential is huge. Meanwhile, the occurrence frequency of haze in northern China is obviously increased, and industrial emission and a heating mode of fossil energy combustion in winter are important reasons for the formation and occurrence of haze in northern China.
Along with the increasing expansion of the scale of cities and towns and the continuous improvement of the living standard of people, the heating area is increased rapidly by about 10 percent of the annual speed increase, and the rocket type II of the heating demand is increased, so that the situation that the heating heat source in northern areas of China is in short supply is caused, and a lot of cities have a large gap in the aspect of heating capacity. It is reported that the heating capacity of many northern cities (such as Beijing, Hebei Shijiazhuang, inner Mongolia red peak, Shanxi Jincheng, etc.) reaches or approaches to full load, and the contradiction between shortage of central heating heat sources is increasingly severe. Newly built large-scale central heating heat source projects are high in investment and long in construction period, and are often restricted by factors such as environmental capacity and the like and difficult to develop; the development of a small coal-fired heat source can seriously pollute the atmosphere; the development of gas heat source and electric heat source has high comprehensive cost and is limited by gas and electricity supply. Therefore, the heat source construction problem of central heating becomes a very intertwined heart disease in many cities in the north.
The outstanding problems and urgent needs in the current central heating system and industrial production system, and the essence of central heating lack of heat is lack of low-grade heat source and reasonable matching of high-grade heat and low-grade heat; the low heat utilization rate in the industrial production process is because the low-grade heat has high proportion and is difficult to be utilized by industrial departments, and the low-grade industrial waste heat utilization is suitable for the centralized heating of cities and towns from the aspects of quality and quantity of heat.
The distributed energy station is combined with the industrial waste heat, so that the low-temperature waste heat is used, the energy interconnection is further enhanced, the energy technology, the energy management and the energy supply are developed towards the direction of diversification, cleanness and high efficiency, and the energy is flexibly and efficiently utilized. If the planning of the energy supply pipe network and the like are better performed in the area, the cost can be further reduced, the heat loss can be reduced, and the profitability of the project can be improved. At present, whether a path laid by a pipe network is really reasonable or not and whether the path laid by the pipe network is really economic or not are rarely considered in the pipe network laying process, and theoretical calculation is lacked.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a distributed energy station regional energy supply method which is reasonable in design and combines industrial waste heat and comprises an energy storage device.
The technical scheme adopted by the invention for solving the problems is as follows: a distributed energy station regional energy supply method which combines industrial waste heat and comprises an energy storage device is characterized in that a system comprises a distributed energy station, a heat storage/cold tank, a sub-transmission tank and a control device, wherein the distributed energy station is connected with the heat storage/cold tank, the heat storage/cold tank is connected with the sub-transmission tank, and the sub-transmission tank is connected with each heat/cold energy user; the heat storage/cooling tank is connected with an industrial waste heat output end, and the control equipment is connected with the distributed energy station;
the energy supply method comprises the following steps:
s1, because the position of each user of heat/cold energy utilization is determined, the position of the heat/cold storage tank is determined, thereby the pipeline path is shortest, the investment is minimum, and the heat energy loss is minimum; in a plurality of pipeline connections, a GEOsteiner algorithm is applied to obtain a minimum Europe type Steinertree, abbreviated EMST) set V of fixed pointsEMSTSet of edges EEMSTAnd corresponding set of weights WeEMST；
S2, adding various restriction factors to minimize the annual total cost of the pipeline;
and S3, obtaining the optimal connection mode of the pipeline, and further optimally obtaining the optimal position of the corresponding sub-delivery tank.
Further, the industrial waste heat output end conveys industrial waste heat to the heat storage/cooling tank, and the industrial waste heat is a heat source which is not used by a factory and has a recycling value.
Further, the heat/cold storage tank stores excess industrial waste heat.
Furthermore, the distribution and transmission tank distributes energy to each heat/cold energy user, so that the aim of saving energy is fulfilled; meanwhile, the separate transmission tank also has certain heat/cold storage capacity.
Further, the heat exchange medium of the whole system adopts internal circulation.
Furthermore, the whole system is automatically controlled by a central control system, so that energy is accurately allocated, and energy is fully saved and consumption is reduced.
Compared with the prior art, the invention has the following advantages and effects: the whole system preferentially utilizes industrial waste heat, and redundant energy is stored in the heat storage/cooling tank, so that the waste heat is utilized to the maximum extent. The distribution and transportation tank and the pipe network layout are optimized by using a GEOsteiner method, the position of the distribution and transportation tank is determined, and the pipe network is more reasonable and economical.
The distributed energy station is combined with industrial waste heat, so that the industrial low-grade waste heat and waste heat are fully utilized, and the consumption of fossil energy is further reduced. The heat supply/cold pipe network is further optimized, the layout is more reasonable, the cost is further reduced, the energy consumption is further reduced, the comprehensive utilization rate of energy is improved, the profitability of a project is enhanced, and the comprehensive competitiveness of the project is improved.
Drawings
Fig. 1 is a schematic system structure according to an embodiment of the present invention.
Fig. 2 is a flow chart of a pipe network optimization method in the embodiment of the present invention.
In the figure: the system comprises a distributed energy station 1, a heat storage/cooling tank 2, a distribution tank 3 and a control device 4.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 1 to 2, in this embodiment, a method for supplying energy to a distributed energy station area containing an energy storage device by using industrial waste heat is characterized in that a system includes a distributed energy station 1, a heat storage/cold tank 2, a sub-delivery tank 3 and a control device 4, wherein the distributed energy station 1 is connected to the heat storage/cold tank 2, the heat storage/cold tank 2 is connected to the sub-delivery tank 3, and the sub-delivery tank 3 is connected to each energy user for heat/cold use; the heat storage/cooling tank 2 is connected with an industrial waste heat output end, and the control equipment 4 is connected with the distributed energy station 1;
the energy supply method comprises the following steps:
s1, because the position of each heat/cold energy user is determined, the position of the heat/cold storage tank 2 is determined, thereby the pipeline path is shortest, the investment is minimum, and the heat energy loss is minimum; in a plurality of pipe connections, a GEOsteiner algorithm is applied to obtain a fixed point set V of a minimum Europe minor Steiner tree (abbreviated as EMST)EMSTSet of edges EEMSTAnd corresponding set of weights WeEMST；
S2, adding various restriction factors to minimize the annual total cost of the pipeline;
and S3, obtaining the optimal connection mode of the pipeline, and further optimally obtaining the optimal position of the corresponding sub-delivery tank 3.
In this embodiment, the industrial waste heat output end transmits industrial waste heat to the heat storage/cooling tank 2, and the industrial waste heat is a heat source which is not used by a factory and has a recycling value. The heat/cold storage tank 2 stores excess industrial waste heat. The distribution and transmission tank 3 distributes energy to each heat/cold energy user to achieve the purpose of energy conservation; meanwhile, the distribution and transmission tank 3 also has certain heat/cold storage capacity.
In this embodiment, the heat exchange medium of the entire system adopts internal circulation. The whole system is automatically controlled by a central control system, so that energy is accurately allocated, and energy is fully saved and consumption is reduced.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (6)
1. A distributed energy station regional energy supply method which combines industrial waste heat and comprises an energy storage device is characterized in that a system comprises a distributed energy station (1), a heat storage/cold tank (2), a distribution tank (3) and a control device (4), wherein the distributed energy station (1) is connected with the heat storage/cold tank (2), the heat storage/cold tank (2) is connected with the distribution tank (3), and the distribution tank (3) is connected with each heat/cold energy user; the heat storage/cooling tank (2) is connected with an industrial waste heat output end, and the control equipment (4) is connected with the distributed energy station (1);
the energy supply method comprises the following steps:
s1, because the position of each heat/cold energy user is determined, the position of the heat/cold storage tank (2) is determined, thereby the pipeline path is shortest, the investment is minimum, and the heat energy loss is minimum; in a plurality of pipeline connections, a GEOsteiner algorithm is applied to obtain a set V of fixed points of the minimum Europe type Steiner treeEMSTSet of edges EEMSTAnd corresponding set of weights WeEMST；
S2, adding various restriction factors to minimize the annual total cost of the pipeline;
and S3, obtaining the optimal connection mode of the pipeline, and further optimally obtaining the optimal position of the corresponding sub-delivery tank (3).
2. The method for regional energy supply of a distributed energy station with energy storage devices combined with industrial waste heat according to claim 1, characterized in that the industrial waste heat output end supplies industrial waste heat to the heat storage/cooling tank (2), and the industrial waste heat is a heat source which is not used by a factory and has a recycling value.
3. The method for regional energy supply of a distributed energy station with energy storage combined with industrial waste heat according to claim 2, characterized in that the heat/cold storage tank (2) stores excess industrial waste heat.
4. The regional energy supply method of the distributed energy station with the energy storage device combined with the industrial waste heat according to the claim 1, characterized in that the distribution tank (3) distributes energy to each heat/cold energy user to achieve the purpose of energy saving; meanwhile, the distribution and transmission tank (3) also has heat/cold storage capacity.
5. The regional energy supply method of the distributed energy resource station with the energy storage device combined with the industrial waste heat as claimed in claim 1, characterized in that the heat exchange medium of the whole system adopts internal circulation.
6. The method as claimed in claim 1, wherein the whole system is automatically controlled by a central control system to achieve precise energy allocation, thereby saving energy and reducing consumption.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010043303.7A CN111219909A (en) | 2020-01-15 | 2020-01-15 | Distributed energy station regional energy supply method with energy storage device and combined with industrial waste heat |
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| CN202010043303.7A CN111219909A (en) | 2020-01-15 | 2020-01-15 | Distributed energy station regional energy supply method with energy storage device and combined with industrial waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594761A (en) * | 2020-11-11 | 2021-04-02 | 华电电力科学研究院有限公司 | Centralized regional energy supply method |
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Patent Citations (8)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112594761A (en) * | 2020-11-11 | 2021-04-02 | 华电电力科学研究院有限公司 | Centralized regional energy supply method |
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