CN111928216A - Latent heat energy storage method with high efficiency - Google Patents
Latent heat energy storage method with high efficiency Download PDFInfo
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- CN111928216A CN111928216A CN202010748959.9A CN202010748959A CN111928216A CN 111928216 A CN111928216 A CN 111928216A CN 202010748959 A CN202010748959 A CN 202010748959A CN 111928216 A CN111928216 A CN 111928216A
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- energy storage
- heat energy
- latent heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/028—Steam generation using heat accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
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Abstract
The invention discloses a latent heat energy storage method with high efficiency, which comprises the following steps: s1: preparing materials, namely preparing a latent heat energy storage boiler with the power of 50kw, a plurality of energy storage tanks, two sensible heat energy storage boilers, a preheating device, an evaporation/condensation device, a superheating device, a plurality of guide pipes and eutectic salt phase change energy storage materials; s2: installation of latent heat storage equipment; a 1: firstly, respectively filling eutectic salt phase change energy storage materials into a plurality of energy storage tanks; a 2: and then the liquid inlet end and the liquid outlet end of the preheating device are respectively communicated with an external energy source module and a photothermal power station through guide pipes. According to the invention, the latent heat energy storage boiler is communicated with the two sensible heat energy storage boilers, and heat is stored by the dual energy storage effects of latent heat energy storage and sensible heat energy storage, so that the energy storage amount and the working efficiency of energy storage are effectively improved, the utilization rate of heat is improved, the fields of heat supply and power generation can be effectively applied, and the utilization of latent heat energy storage is improved.
Description
Technical Field
The invention relates to the technical field of energy storage, in particular to a latent heat energy storage method with high efficiency.
Background
Latent heat energy storage, also called phase change energy storage, is energy storage or energy release by using heat absorption or heat release of a material during phase change, and the material not only has higher energy density, but also has simple device, small volume, flexible design, convenient use and easy management. In addition, there is a great advantage: in the phase change energy storage process of the material, the material is approximately constant in temperature, so that the temperature of a system can be controlled, and the latent heat energy storage has the most practical development prospect.
In the existing latent heat energy storage process, only a patch is difficult to connect a latent heat energy storage boiler with an energy storage pipe for storing energy, so that the energy storage efficiency is low, the energy storage amount is influenced, partial heat loss is caused, and the application of latent heat energy storage is influenced;
disclosure of Invention
The present invention is directed to a latent heat storage method with high efficiency, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a latent heat storage method with high efficiency, comprising the steps of: s1: preparing materials, namely preparing a latent heat energy storage boiler with the power of 50kw, a plurality of energy storage tanks, two sensible heat energy storage boilers, a preheating device, an evaporation/condensation device, a superheating device, a plurality of guide pipes and eutectic salt phase change energy storage materials;
s2: installation of latent heat storage equipment;
a 1: firstly, respectively filling eutectic salt phase change energy storage materials into a plurality of energy storage tanks;
a 2: then, the liquid inlet end and the liquid outlet end of the preheating device are respectively communicated with an external energy source module and a photothermal power station through guide pipes, the output end of the preheating device is fixedly connected with the liquid inlet end of one sensible heat energy storage boiler, and the liquid outlet end of one sensible heat energy storage boiler is fixedly connected with the liquid inlet end of the latent heat energy storage boiler through a guide pipe;
a 3: then fixedly connecting the output end of the latent heat energy storage boiler with the input end of an evaporation/condensation device, connecting the output end of the evaporation/condensation device with a plurality of energy storage tanks in series, fixedly connecting the liquid outlet end of the latent heat energy storage boiler with the liquid inlet end of another sensible heat energy storage boiler, and fixedly connecting the liquid outlet end of the other sensible heat energy storage boiler with the liquid inlet end of a superheating device;
a 4: finally, the liquid outlet end of the overheating device is respectively communicated with the photothermal power station and the energy module through a conduit, so that the installation of the latent heat energy storage equipment is completed;
s3: use of latent heat storage devices:
b1, preheating the energy module by a preheating device, and introducing the preheated energy into the sensible heat energy storage boiler for sensible heat energy storage to carry out primary energy storage;
b 2: an energy module in the sensible heat energy storage boiler flows into the latent heat energy storage boiler, flows into the evaporation/condensation device through the latent heat energy storage boiler, and sprays heat exchange working fluid to the energy storage tank from the evaporation/condensation device for storage;
b 3: the heat in the energy storage tank is sent to the energy module through the overheating device to be heated and generated.
Preferably, the preheating device comprises a shell and an annular preheating copper pipe, the preheating copper pipe is fixedly mounted on the inner wall of the shell, and preheating liquid is filled in the shell.
Preferably, evaporation condensing equipment includes box, evaporimeter and condenser, inside one side fixed mounting of box has the evaporimeter, the opposite side fixed mounting of box has the condenser, the evaporimeter can adopt the model on the market to be the evaporimeter of "4T", the condenser can adopt the model on the market can be the condenser of "HUANYU".
Preferably, the overheating device performs overheating protection on heat flowing out of the energy storage tank, and the overheating device can be a commercial overheating device with the model number being LHS 05-0.09-QY.
Preferably, the latent heat energy storage boiler, the plurality of energy storage tanks, the two sensible heat energy storage boilers, the preheating device, the evaporation/condensation device and the overheating device are electrically connected with an external power supply through an external Programmable Logic Controller (PLC).
The invention has the technical effects and advantages that: according to the invention, the latent heat energy storage boiler is communicated with the two sensible heat energy storage boilers, and heat is stored by the dual energy storage effects of latent heat energy storage and sensible heat energy storage, so that the energy storage amount and the working efficiency of energy storage are effectively improved, the utilization rate of heat is improved, the fields of heat supply and power generation can be effectively applied, and the utilization of latent heat energy storage is improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a latent heat storage boiler; 2. a sensible heat energy storage boiler; 3. a preheating device; 4. an evaporation/condensation device; 5. and a superheating device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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. The invention provides a latent heat energy storage method with high efficiency as shown in figure 1, which comprises the following steps: s1: preparing materials, namely preparing a latent heat energy storage boiler 1 with the power of 50kw, a plurality of energy storage tanks, two sensible heat energy storage boilers 2, a preheating device 3, an evaporation/condensation device 4, a superheating device 5, a plurality of guide pipes and eutectic salt phase change energy storage materials;
s2: installation of latent heat storage equipment;
a 1: firstly, respectively filling eutectic salt phase change energy storage materials into a plurality of energy storage tanks;
a 2: then, the liquid inlet end and the liquid outlet end of the preheating device 3 are respectively communicated with an external energy source module and a photothermal power station through guide pipes, the output end of the preheating device 3 is fixedly connected with the liquid inlet end of one sensible heat energy storage boiler 2, and the liquid outlet end of the one sensible heat energy storage boiler 2 is fixedly connected with the liquid inlet end of the latent heat energy storage boiler 1 through a guide pipe;
a 3: then fixedly connecting the output end of the latent heat energy storage boiler 1 with the input end of an evaporation/condensation device 4, connecting the output end of the evaporation/condensation device 4 with a plurality of energy storage tanks in series, fixedly connecting the liquid outlet end of the latent heat energy storage boiler 1 with the liquid inlet end of another sensible heat energy storage boiler 2, and fixedly connecting the liquid outlet end of the other sensible heat energy storage boiler 2 with the liquid inlet end of a superheating device 5;
a 4: finally, the liquid outlet end of the overheating device 5 is respectively communicated with the photothermal power station and the energy module through a conduit, so that the installation of the latent heat energy storage equipment is completed;
s3: use of latent heat storage devices:
b1, preheating the energy module by a preheating device 3, and introducing the preheated energy into the sensible heat energy storage boiler 2 for sensible heat energy storage to carry out primary energy storage;
b 2: an energy module in the sensible heat energy storage boiler 2 flows into the latent heat energy storage boiler 1, flows into the evaporation/condensation device 4 through the latent heat energy storage boiler 2, and sprays heat exchange working fluid to an energy storage tank from the evaporation/condensation device 4 for storage;
b 3: the heat in the energy storage tank is sent to the energy module through the overheating device 5 for heat supply and power generation;
the preheating device 3 comprises a shell and an annular preheating copper pipe, the preheating copper pipe is fixedly mounted on the inner wall of the shell, preheating liquid is filled in the shell, and the preheating device 3 is convenient for preheating the liquid from the energy module, so that the working efficiency of later-stage evaporation of energy is improved;
the evaporation/condensation device 4 comprises a box body, an evaporator and a condenser, wherein the evaporator is fixedly arranged on one side in the box body, the condenser is fixedly arranged on the other side in the box body, the evaporator can adopt a 4T-type evaporator on the market, the condenser can adopt a HUANYU-type condenser on the market, and the evaporation/condensation device is convenient for heat exchange and heating liquid;
the overheating device 5 performs overheating protection on heat flowing out of the energy storage tank, and the overheating device 5 can be an overheating device 5 with the market model number of LHS 05-0.09-QY;
latent heat energy storage boiler 1, a plurality of energy storage tank, two sensible heat energy storage boiler 2, preheating device 3, evaporation condensing equipment 4, superheating device 5 all through external programmable logic controller and external power supply electric connection, and programmable logic controller can adopt the programmable logic controller that the model is "8031L" on the market, through the work of each device of PLC controller control, realizes automated control, improves latent heat energy storage equipment's work efficiency.
The working principle of the invention is as follows: at first preheat the liquid that comes from the energy module, liquid after preheating flows into and carries out the sensible heat energy storage to sensible heat energy storage device's inside, liquid after the sensible heat energy storage flows into latent heat energy storage boiler and carries out the heat exchange through evaporation condensing equipment, and store the heat of exchange in the inside of energy storage jar, the inside liquid of latent heat energy storage boiler flows into to sensible heat energy storage boiler the inside and stores energy once more, effectual improvement energy storage efficiency, liquid after the energy storage sends to the energy module through superheating device, through the mutual cooperation work of sensible heat energy storage and latent heat energy storage, the make full use of the heat energy of being convenient for, can apply to heat supply and electricity generation field.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A latent heat storage method with high efficiency, comprising the steps of:
s1: preparing materials, namely preparing a latent heat energy storage boiler (1) with the power of 50kw, a plurality of energy storage tanks, two sensible heat energy storage boilers (2), a preheating device (3), an evaporation/condensation device (4), a superheating device (5), a plurality of pipes and eutectic salt phase change energy storage materials;
s2: installation of latent heat storage equipment;
a 1: firstly, respectively filling eutectic salt phase change energy storage materials into a plurality of energy storage tanks;
a 2: then, the liquid inlet end and the liquid outlet end of the preheating device (3) are respectively communicated with an external energy source module and a photothermal power station through guide pipes, the output end of the preheating device (3) is fixedly connected with the liquid inlet end of one sensible heat energy storage boiler (2), and the liquid outlet end of one sensible heat energy storage boiler (2) is fixedly connected with the liquid inlet end of the latent heat energy storage boiler (1) through a guide pipe;
a 3: then fixedly connecting the output end of the latent heat energy storage boiler (1) with the input end of an evaporation/condensation device (4), connecting the output end of the evaporation/condensation device (4) with a plurality of energy storage tanks in series, fixedly connecting the liquid outlet end of the latent heat energy storage boiler (1) with the liquid inlet end of another sensible heat energy storage boiler (2), and fixedly connecting the liquid outlet end of another sensible heat energy storage boiler (2) with the liquid inlet end of a superheating device (5);
a 4: finally, the liquid outlet end of the overheating device (5) is respectively communicated with the photothermal power station and the energy module through a conduit to complete the installation of the latent heat energy storage equipment;
s3: use of latent heat storage devices:
b1, preheating the energy module by a preheating device (3), and introducing the preheated energy into the sensible heat energy storage boiler (2) for sensible heat energy storage to carry out primary energy storage;
b 2: an energy module in the sensible heat energy storage boiler (2) flows into the latent heat energy storage boiler (1), flows into the evaporation/condensation device (4) through the latent heat energy storage boiler (2), and sprays heat exchange working fluid to an energy storage tank from the evaporation/condensation device (4) for storage;
b 3: the heat in the energy storage tank is sent to the energy module through the overheating device (5) for heat supply and power generation.
2. A latent heat energy storage method having a high efficiency according to claim 1, wherein said preheating device (3) comprises a housing and an annular preheating copper pipe, said housing has a preheating copper pipe fixedly mounted on the inner wall thereof, and the interior of said housing is filled with a preheating liquid.
3. A latent heat energy storage method having high efficiency according to claim 1, wherein said evaporation/condensation device (4) comprises a box body, an evaporator and a condenser, wherein an evaporator is fixedly installed at one side of the interior of said box body, and a condenser is fixedly installed at the other side of said box body, said evaporator can adopt a type of "4T" on the market, and said condenser can adopt a type of "HUANYU" on the market.
4. A latent heat energy storage method with high efficiency according to claim 1, characterized in that said superheating device (5) is used for superheating protection of the heat from the energy storage tank, and said superheating device (5) can be a superheating device (5) with the market model number "LHS 05-0.09-QY".
5. The latent heat energy storage method with high efficiency according to claim 1, characterized in that the latent heat energy storage boiler (1), the plurality of energy storage tanks, the two sensible heat energy storage boilers (2), the preheating device (3), the evaporation/condensation device (4) and the overheating device (5) are all electrically connected with an external power supply through an external Programmable Logic Controller (PLC).
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| CN106703908A (en) * | 2015-11-12 | 2017-05-24 | 国网智能电网研究院 | Rankine cycle system with phase change energy storage heat exchanger |
| CN107062973A (en) * | 2017-05-10 | 2017-08-18 | 北京桑德斯能源技术有限公司 | A kind of phase-change thermal storage thermal power plant unit |
| CN207570148U (en) * | 2017-08-16 | 2018-07-03 | 日出东方太阳能股份有限公司 | A kind of solar energy heat-collecting heat-storage system |
| CN108644880A (en) * | 2018-05-07 | 2018-10-12 | 华南理工大学 | A kind of solar energy heating system and its working method based on spiral-plate reactor |
| CN108709176A (en) * | 2018-06-05 | 2018-10-26 | 国电龙源节能技术有限公司 | Compound storage suitable for peaking generation takes hot systems and method |
| CN109945714A (en) * | 2019-04-23 | 2019-06-28 | 深圳市爱能森科技有限公司 | Phase-change accumulation energy heat-exchange system and the method for heating water |
-
2020
- 2020-07-30 CN CN202010748959.9A patent/CN111928216A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703908A (en) * | 2015-11-12 | 2017-05-24 | 国网智能电网研究院 | Rankine cycle system with phase change energy storage heat exchanger |
| CN107062973A (en) * | 2017-05-10 | 2017-08-18 | 北京桑德斯能源技术有限公司 | A kind of phase-change thermal storage thermal power plant unit |
| CN207570148U (en) * | 2017-08-16 | 2018-07-03 | 日出东方太阳能股份有限公司 | A kind of solar energy heat-collecting heat-storage system |
| CN108644880A (en) * | 2018-05-07 | 2018-10-12 | 华南理工大学 | A kind of solar energy heating system and its working method based on spiral-plate reactor |
| CN108709176A (en) * | 2018-06-05 | 2018-10-26 | 国电龙源节能技术有限公司 | Compound storage suitable for peaking generation takes hot systems and method |
| CN109945714A (en) * | 2019-04-23 | 2019-06-28 | 深圳市爱能森科技有限公司 | Phase-change accumulation energy heat-exchange system and the method for heating water |
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Application publication date: 20201113 |