CN103216950A - Unit-assembled-type solar thermal storage and thermal insulation device - Google Patents

Unit-assembled-type solar thermal storage and thermal insulation device Download PDF

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Publication number
CN103216950A
CN103216950A CN2013101695499A CN201310169549A CN103216950A CN 103216950 A CN103216950 A CN 103216950A CN 2013101695499 A CN2013101695499 A CN 2013101695499A CN 201310169549 A CN201310169549 A CN 201310169549A CN 103216950 A CN103216950 A CN 103216950A
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China
Prior art keywords
heat
unit
thermal
outer container
thermal insulation
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CN2013101695499A
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Chinese (zh)
Inventor
梁勇
马涛
王国良
张凤凤
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HEFEI YAOHUI SOLAR ENERGY HEAT POWER ENGINEERING TECHNOLOGY Co Ltd
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HEFEI YAOHUI SOLAR ENERGY HEAT POWER ENGINEERING TECHNOLOGY Co Ltd
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Application filed by HEFEI YAOHUI SOLAR ENERGY HEAT POWER ENGINEERING TECHNOLOGY Co Ltd filed Critical HEFEI YAOHUI SOLAR ENERGY HEAT POWER ENGINEERING TECHNOLOGY Co Ltd
Priority to CN2013101695499A priority Critical patent/CN103216950A/en
Publication of CN103216950A publication Critical patent/CN103216950A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/20—Arrangements for storing heat collected by solar heat collectors using chemical reactions, e.g. thermochemical reactions or isomerisation reactions
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)

Abstract

The invention discloses a unit-assembled-type solar thermal storage and thermal insulation device. The unit-assembled-type solar thermal storage and thermal insulation device is characterized in that an external box is internally provided with external box positioning ribs; units are fixed in the external box by the external box positioning ribs; sealed thermal insulation layers are arranged between the external box and the units and are vacuum layers; the thermal insulation layers are internally filled with heat protection media; the units are sealed bodies consisting of inner boxes, heat collecting S-shaped heat exchangers, heat taking S-shaped heat exchangers and heat storage media; nitrogen is filled into the inner boxes; the heat collecting S-shaped heat exchangers and the heat taking S-shaped heat exchangers are arrayed in layers in the inner boxes; the heat storage media are filled in the inner boxes; and heat collecting outlets at one ends of the inner boxes and heat taking inlets and heat taking outlets at the other ends of the inner boxes extend out of the external box through the thermal insulation layers. The unit-assembled-type solar thermal storage and thermal insulation device provided by the invention is small in volume, and has a good thermal insulation effect.

Description

A kind of unit assembly type solar heat-preservation attemperator
Technical field
The present invention is a solar utilization technique, particularly a kind of unit assembly type solar heat-preservation-attemperator.
Technical background
People utilize conversion of solar energy to do a large amount of work for thermal source, and the heat of conversion of solar energy is stored efficiently, use for people are convenient, and be the key technology of utilizing solar energy.Adopting the fuse salt phase-transition heat-storage is the main mode of at present thermmal storage of conversion of solar energy being got up.Concrete see also following patent: high temperature mesolimnion mixed heat accumulation device in utility model application number 200720051634.5 fuse salts; Patent application 200810102397.X passive molten salt thermal absorber; The utility model application number removable demarcation strip list of 201020643773.9 high-temperature fusion salt tank storage thermic devices; Patent application 201110133971.X fuse salt phase transition heat accumulation unit that is applied to solar airconditioning; Utility model application number 201120305189.7 1 kinds of two jars of fuse salt heat reservoirs; Utility model application number 201120096552.9 solar energy heat-storage devices.The shortcoming that above-mentioned prior art exists is: the volume of regenerative apparatus is bigger, and required heat-barrier material is also more, the integral heat insulation poor performance.So as storing the heat of equal number, then the quantity of required heat storage medium is many, volume is big.Industry at present and civilian heat-barrier material nearly all are to use insulation material to pile up formula, this heat insulation mode is concerning being lower than the regenerative apparatus below 100 ℃, existing performance of heat protective material and technology can adapt to requirement, but to being higher than the regenerative apparatus more than 200 ℃, for guaranteed efficiency, have to strengthen the thickness of heat-insulation layer, cause regenerative apparatus bulky.Heat storage medium makes the cost of whole heat reservoir higher more, and institute takes up space also bigger; Also, will weaken heat-transfer intensity, have a strong impact on the collection utilization of energy along with the increase of fused salt amount because there was the cold-peace phenomenon of phase separation in the heat storage medium fused salt.Fused salt contacts with air and can take place chemical reaction, the heat accumulation efficient and the service life of having reduced fused salt.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of unit assembly type solar heat-preservation attemperator is provided, adopt the vacuum heat-insulation technology, reduce the volume of device, strengthening heat insulation effect; In the unit, charge into nitrogen, avoid fused salt to contact oxidative degradation takes place, improve the heat accumulation efficient of fused salt and increase service life with air; Adopt and disperse encapsulation and overall package, the unit of requirement can be provided according to user's demand, increase the heat-transfer intensity between fused salt and the heat transfer medium conduction oil, improve heat utilization efficiency.
The present invention adopts following technical scheme for the technical solution problem:
Unit of the present invention assembly type solar heat-preservation attemperator, its design feature is: the outer container positioning bar is set in outer container, and the unit is fixed in the outer container by described outer container positioning bar; Be provided with airtight heat-insulation layer between described outer container and unit, described heat-insulation layer is a vacuum layer, is filled with heat insulation medium in described heat-insulation layer; The obturator that described unit is made up of interior case, thermal-arrest S type heat exchanger, heat-obtaining S type heat exchanger and heat storage medium has charged into nitrogen in interior case; Thermal-arrest S type heat exchanger and heat-obtaining S type heat exchanger storied placement in interior case, heat storage medium is full of interior case; The thermal-arrest outlet of interior case one end and the heat-obtaining import of the thermal-arrest import and the other end and heat-obtaining outlet are all stretched out outer container by heat-insulation layer.
Unit of the present invention assembly type solar heat-preservation attemperator, its design feature also is: described unit is one or more; A plurality of unit is between the adjacent cells between described thermal-arrest S type heat exchanger, and adopts tube connector to be connected in series or parallel between described heat-obtaining S type heat exchanger.
Unit of the present invention assembly type solar heat-preservation attemperator, its design feature also is: the vacuum of the heat-insulation layer between described outer container and the unit is 0.1Pa-1Pa.
Compared with the prior art, beneficial effect of the present invention is embodied in: volume of the present invention is less, compact conformation, heat insulation mode adopt the vacuum heat-insulation technology, i.e. filling porous heat-insulating material in insulated space, again insulated space is vacuumized, form the vacuum heat-insulating mode, reduce the volume of energy storage device, strengthened heat insulation effect.In the unit, charge into nitrogen, avoid fused salt to contact oxidative degradation takes place, improved the heat accumulation efficient of fused salt and increased service life with air.The present invention has the characteristics of disperseing encapsulation and overall package concurrently; can and then select the quantity of required unit according to user's demand; not only obviously increased the heat-transfer intensity between heat storage medium fused salt and the heat transfer medium conduction oil; improved heat utilization efficiency; and be beneficial to the large-scale production of regenerative apparatus, have good and economic and practicality.
Description of drawings
Fig. 1 is the structural representation of a unit among the present invention;
Fig. 2 is the cross-sectional view of a unit among the present invention;
Fig. 3 is set to the structural representation of two unit for the present invention;
Fig. 4 is set to the cross-sectional view of two unit for the present invention;
Fig. 5 is set to the structural representation of four unit for the present invention;
Number in the figure: 1 outer container, 2 interior casees, 3 heat insulation media, 4 thermal-arrest imports, the outlet of 5 thermal-arrests, 6 heat-obtaining imports, the outlet of 7 heat-obtainings, 8 thermal-arrest S type heat exchangers, 9 heat storage mediums, 10 outer container positioning bars, 11 tube connectors, 12 heat-obtaining S type heat exchangers.
The specific embodiment
Embodiment 1
Referring to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of a unit of the present invention, and Fig. 2 is the cross-sectional view of a unit of the present invention.
A unit of the present invention assembly type solar heat-preservation heating plant, be provided with the position of outer container positioning bar 10 fixed cells in outer container 1, be provided with heat-insulation layer between outer container 1 and the unit, heat-insulation layer is a closed structure, be filled with heat insulation medium 3, heat insulation medium 3 is selected foam glass board or rock cotton board for use; Heat-insulation layer is a vacuum layer.
The obturator that unit of the present invention is made up of interior case 2, thermal-arrest S type heat exchanger 8, heat-obtaining S type heat exchanger 12 and heat storage medium 9 charges into nitrogen in the obturator; Thermal-arrest S type heat exchanger 8 and heat-obtaining S type heat exchanger 12 storied placement in interior case 2, heat storage medium 9 is full of interior case 2; The thermal-arrest outlet 5 of interior case 2 one ends and thermal-arrest import 4 are all stretched out outer container 1 by heat-insulation layer with the heat-obtaining import 6 and the heat-obtaining outlet 7 of the other end.
Heat storage medium 9 is selected the nitric acid fused salt for use, and by KNO3+NaNO2 ,+NaNO3 forms by a certain percentage.The appearance and size that the present invention designs a unit is that length is respectively 400 mm, 300 mm and 200mm, can take up 30KG nitric acid fused salt.Charging into nitrogen in the obturator of unit, charge into the purpose of nitrogen, is the air in the rejected unit obturator, avoids fused salt to contact with air oxidative degradation takes place.
Heat-insulation layer between outer container 1 and the unit is vacuumized, and vacuum is in 0.1Pa to 1Pa scope.Through actual detected, in room temperature is under 27 ℃ of situations, when the temperature in the unit reaches 100 ℃, does not vacuumize, outer container 1 surface temperature is 40 ℃, after vacuumizing, outer container 1 surface temperature remains on 27 ℃ substantially, and the temperature in the unit reaches 226 ℃, do not vacuumize, outer container 1 surface temperature is 55 ℃, and after vacuumizing, outer container 1 surface temperature is 35 ℃.
The present invention is designed to the solar heat-preservation heating plant of a unit, be under 27 ℃ the sunny weather in room temperature, the heat transfer medium conduction oil is after solar thermal collector is heated to 270 ℃, flow into thermal-arrest S type heat exchanger 8 after thermal-arrest outlet 5 is flowed out by thermal-arrest import 4, work through 4 hours, the temperature of heat storage medium 9 fused salts reaches 226 ℃ in the unit, and as calculated, the heat of storage is 11030KJ.When needs, the heat transfer medium conduction oil is flowed through heat-obtaining S type heat exchanger 12 backs from heat-obtaining outlet 7 outflows through heat-obtaining import 6, promptly comes out stored heat extraction for people to use.
Embodiment 2
Referring to Fig. 3 and Fig. 4.Fig. 3 is the structural representation of two unit of the present invention, and Fig. 4 is the cross-sectional view of two unit of the present invention.
Two unit are installed in outer container 1, and concrete structure is seen I and the II among Fig. 3; Other identical with embodiment 1.
Thermal-arrest outlet 5 between two unit of the present invention assembly type solar heat-preservation heating plant, two unit adopts tube connector 11 serial or parallel connections to be connected with thermal-arrest import 4 separately; Heat-obtaining import 6 between two unit adopts tube connector 11 serial or parallel connections to be connected with heat-obtaining outlet 7 separately.
In room temperature is under the sunny weather of 27oC, and through 11 hours work, the temperature of heat storage medium 9 fused salts reached 226oC. as calculated, and the heat of storage is 22060KJ.
Embodiment 3
Referring to Fig. 5, Fig. 5 is the structural representation of four unit of the present invention.
Four unit are installed in outer container 1, and concrete structure is seen I, II, III and the IV among Fig. 5; Thermal-arrest outlet 5 between four unit adopts tube connector 11 serial or parallel connections to be connected with thermal-arrest import 4 separately; Heat-obtaining import 6 between four unit adopts tube connector 11 serial or parallel connections to be connected with heat-obtaining outlet 7 separately.Other identical with embodiment 1.
In room temperature is under the sunny weather of 27oC, and through 20 hours work, the temperature of heat storage medium 9 fused salts reached 226oC. as calculated, and the heat of storage is 44120KJ.
Thermal-arrest outlet 5 and thermal-arrest import 4 shown in each figure are import and exports of thermal-arrest S type heat exchanger 8; Heat-obtaining import 6 and heat-obtaining outlet 7 are the import and export of heat-obtaining S type heat exchanger 12.

Claims (3)

1. unit assembly type solar heat-preservation attemperator, it is characterized in that: outer container positioning bar (10) is set in outer container (1), and the unit is fixed in the outer container (1) by described outer container positioning bar (10); Be provided with airtight heat-insulation layer between described outer container (1) and unit, described heat-insulation layer is a vacuum layer, is filled with heat insulation medium (3) in described heat-insulation layer; The obturator that described unit is made up of interior case (2), thermal-arrest S type heat exchanger (8), heat-obtaining S type heat exchanger (12) and heat storage medium (9) has charged into nitrogen in interior case (2); Thermal-arrest S type heat exchanger (8) and heat-obtaining S type heat exchanger (12) storied placement in interior case (2), heat storage medium (9) is full of interior case (2); The thermal-arrest outlet (5) of interior case (2) one ends and thermal-arrest import (4) are all stretched out outer container (1) by heat-insulation layer with the heat-obtaining import (6) and the heat-obtaining outlet (7) of the other end.
2. unit according to claim 1 assembly type solar heat-preservation attemperator, it is characterized in that: described unit is one or more; A plurality of unit is between the adjacent cells between described thermal-arrest S type heat exchanger (8), and adopts tube connector (11) to be connected in series or parallel between described heat-obtaining S type heat exchanger (12).
3. unit according to claim 1 and 2 assembly type solar heat-preservation attemperator, it is characterized in that: the vacuum of the heat-insulation layer between described outer container (1) and the unit is 0.1Pa-1Pa.
CN2013101695499A 2013-05-09 2013-05-09 Unit-assembled-type solar thermal storage and thermal insulation device Pending CN103216950A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103644663A (en) * 2013-11-04 2014-03-19 李洪伟 Solar vacuum phase-change thermal storage device
CN105423576A (en) * 2015-12-19 2016-03-23 湖南科技大学 Overheat protection device and overheat protection method of heat absorber for solar energy photothermal conversion

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201191144Y (en) * 2007-12-03 2009-02-04 陈定兴 Phase change energy storageheat exchanger
CN203216028U (en) * 2013-05-09 2013-09-25 合肥耀辉太阳能热力工程科技有限公司 Unit assembly type solar energy heat storage heat preservation device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201191144Y (en) * 2007-12-03 2009-02-04 陈定兴 Phase change energy storageheat exchanger
CN203216028U (en) * 2013-05-09 2013-09-25 合肥耀辉太阳能热力工程科技有限公司 Unit assembly type solar energy heat storage heat preservation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103644663A (en) * 2013-11-04 2014-03-19 李洪伟 Solar vacuum phase-change thermal storage device
CN105423576A (en) * 2015-12-19 2016-03-23 湖南科技大学 Overheat protection device and overheat protection method of heat absorber for solar energy photothermal conversion
CN105423576B (en) * 2015-12-19 2017-09-05 湖南科技大学 The overtemperature protection system and method for excessive heating protection of solar energy hot-cast socket heat dump

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Application publication date: 20130724