CN111121440A - Solar drying device - Google Patents
Solar drying device Download PDFInfo
- Publication number
- CN111121440A CN111121440A CN202010051236.3A CN202010051236A CN111121440A CN 111121440 A CN111121440 A CN 111121440A CN 202010051236 A CN202010051236 A CN 202010051236A CN 111121440 A CN111121440 A CN 111121440A
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- CN
- China
- Prior art keywords
- solar
- air
- drying
- heat collector
- air inlet
- 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.)
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- 238000001035 drying Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 abstract description 7
- 230000005855 radiation Effects 0.000 abstract description 6
- 239000003570 air Substances 0.000 description 72
- 238000005338 heat storage Methods 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
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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
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a solar drying device which comprises a first solar air heat collector, a second solar air heat collector, a heat accumulator, a drying chamber and a solar chimney, wherein an air inlet of the first solar air heat collector is communicated with the atmosphere, an air outlet of the first solar air heat collector is respectively connected with a first air inlet of the drying chamber and an air inlet of the second solar air heat collector, an air outlet of the second solar air heat collector is connected with one end of the heat accumulator, the other end of the heat accumulator is connected with a second air inlet of the drying chamber, an air outlet of the drying chamber is connected with an air inlet of the solar chimney, and an air outlet of the solar chimney is communicated with the atmosphere; the solar chimney is used as a driving device for air flow, so that the number of running parts in the system is reduced to the greatest extent, and the fan only works when no solar radiation exists; saves the drying cost, improves the drying efficiency and can be used for drying mass materials.
Description
Technical Field
The invention relates to a drying device, in particular to a solar drying device.
Background
The drying energy consumption mainly corresponds to latent heat corresponding to moisture in an evaporation material, and accounts for 10-15% of industrial energy consumption, and the main direction for reducing the energy consumption at present is to adopt new energy sources such as solar energy and the like, but the drying cannot be continuously carried out when no sunlight exists at night. At present, a water tank is generally adopted as a heat storage component, but a matched water-air heat exchanger is required to transfer heat to air serving as a drying medium, and a water pump in a water circulation loop increases energy consumption and complexity of a system.
The invention patent with the patent application number of 201620933131.X discloses a heat storage and preservation type drying chamber, which comprises a greenhouse wall body, an air inlet, an air outlet, a fan and an air door, wherein the air inlet, the air outlet, the fan and the air door are respectively arranged below the drying chamber; the wall body comprises an aluminum plate shell and an acrylic plate with the light transmittance of 90% from inside to outside, the outer layer of the aluminum plate shell is subjected to black plating treatment, a plurality of salient points with the height of 2-3 mm are rolled, the salient points are in contact with the acrylic plate and serve as supporting points of the acrylic plate, and a gap between the acrylic plate and the outer layer of the aluminum plate shell is vacuumized; and a heat storage material is filled between the inner layer and the outer layer of the aluminum plate shell. The wall plate is a solar heat collecting device, and heat storage materials are filled in the wall plate to solve the problem that the temperature in the drying chamber fluctuates too much along with solar radiation; the scheme has no external air circulation pipeline, low drying efficiency and long drying time, and is suitable for drying small-batch materials.
The invention patent with the application number of 201721793484.5 discloses a trough type solar high-temperature heat storage hot air supply drying system, which comprises a trough type solar heat collector and a molten salt heat storage box body, wherein the inlet of the trough type solar heat collector is connected to the outlet of the molten salt heat storage box body through a molten salt pump, and the outlet of the trough type solar heat collector is connected to the inlet of the molten salt heat storage box body; the output end of the fused salt heat storage box body is connected to the input end of the high-temperature side of the plate heat exchanger through a variable frequency fan, and the input end of the fused salt heat storage box body is connected to the output end of the high-temperature side of the plate heat exchanger; the low-temperature side output end of the plate heat exchanger is connected with the air inlets of the drying chambers which are connected in parallel, and the input end of the plate heat exchanger is connected with the air outlet of the drying chamber through a variable frequency fan; the molten salt pump and the control end of the variable frequency fan are connected to the PLC control system. The invention adopts the focusing groove type solar heat collector, the drying temperature is high, and the cost is higher for common drying; the adopted heat accumulator is fused salt, has corrosiveness and has high requirement on pipelines; the fan is required to drive the air, and the cost is correspondingly increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the solar drying device which is low in cost, high in efficiency and suitable for drying mass materials.
The technical scheme for solving the technical problems is as follows: the utility model provides a solar drying device, includes first solar energy air heat collector, second solar energy air heat collector, heat accumulator, drying chamber and solar energy chimney, the air inlet and the atmosphere intercommunication of first solar energy air heat collector, the gas outlet of first solar energy air heat collector respectively with the first air inlet of drying chamber with the air inlet of second solar energy air heat collector is connected, the gas outlet of second solar energy air heat collector with the one end of heat accumulator is connected, the other end of heat accumulator is connected with the second air inlet of drying chamber, the air outlet of drying chamber with the air inlet of solar energy chimney is connected, the air outlet and the atmosphere intercommunication of solar energy chimney.
Further, the heat accumulator is a pebble bed.
Further, an air outlet of the drying chamber is connected with an air inlet of the solar chimney through a first pipeline, and a fan is arranged on the first pipeline.
Further, an induced air port of the fan is communicated with the first pipeline, and outlet air of the fan is communicated with the atmosphere.
Further, the air outlet of the first solar air heat collector is connected with the first air inlet of the drying chamber through a second pipeline, and the air inlet of the second solar air heat collector is communicated with the second pipeline through a third pipeline.
Furthermore, a flow control valve is arranged on the third pipeline.
The invention has the beneficial effects that:
1) the solar chimney is used as a driving device for air flow, so that the number of running parts in the system is reduced to the greatest extent, and the fan only works when no solar radiation exists, and if the fan only needs to dry when solar radiation exists, the fan does not need to be started; the drying cost is saved, the drying efficiency is improved, and the method can be used for drying large-batch materials;
2) the second solar air heat collector is additionally arranged, so that the flexibility of air flow regulation of the two loops is improved, key parameters such as temperature and humidity of the drying chamber are better controlled, the quality of a dried product is improved, and the heat storage effect of the pebble bed is also improved;
3) the pebble bed is used as a heat storage device, so that the pebble bed is non-corrosive, has low requirement on pipelines, and reduces the manufacturing cost of the device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a solar drying device comprises a first solar air heat collector 1, a second solar air heat collector 2, a heat accumulator, a drying chamber 4 and a solar chimney 5, wherein an air inlet of the first solar air heat collector 1 is communicated with the atmosphere, an air outlet of the first solar air heat collector 1 is respectively connected with a first air inlet of the drying chamber 4 and an air inlet of the second solar air heat collector 2, an air outlet of the second solar air heat collector 2 is connected with one end of the heat accumulator, the heat accumulator is a pebble bed 3, the other end of the heat accumulator is connected with a second air inlet of the drying chamber 4, an air outlet of the drying chamber 4 is connected with an air inlet of the solar chimney 5, and an air outlet of the solar chimney 5 is communicated with the atmosphere.
Under the condition of solar radiation, the gas in the solar chimney 5 is heated to generate upward buoyancy, so that power is provided for the whole system, and ambient air can smoothly enter from the air inlet of the first solar air heat collector 1 and is finally discharged from the air outlet of the solar chimney 5.
An air outlet of the drying chamber 4 is connected with an air inlet of the solar chimney 5 through a first pipeline 10, and a fan 6 is arranged on the first pipeline 10. An air inducing port of the fan 6 is communicated with the first pipeline 10, and outlet air of the fan 6 is communicated with the atmosphere.
The air outlet of the first solar air heat collector 1 is connected with the first air inlet of the drying chamber 4 through a second pipeline 8, and the air inlet of the second solar air heat collector 2 is communicated with the second pipeline 8 through a third pipeline 9.
And a flow control valve 7 is arranged on the third pipeline 9.
The ambient air enters the first solar air heat collector 1, is divided into two paths after being heated under the action of solar radiation, wherein one path enters the drying chamber 4 to dry the materials, and the other path enters the second solar air heat collector 2, flows through the pebble bed 3 after being further heated and heated, and stores heat therein; the air after heat accumulation also enters the drying chamber 4 to dry the materials. The air flow in the system under the sunshine condition in the daytime can be driven by the buoyancy lift force generated by the solar chimney 5. The blower 6 is only required to be started at night, and an air inlet of the blower 6 is communicated with the first pipeline to drive the air in the whole device to flow, so that the air flows through the pebble bed 3 to release the heat stored in the pebble bed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The solar drying device is characterized by comprising a first solar air heat collector, a second solar air heat collector, a heat accumulator, a drying chamber and a solar chimney, wherein an air inlet of the first solar air heat collector is communicated with the atmosphere, an air outlet of the first solar air heat collector is respectively connected with a first air inlet of the drying chamber and an air inlet of the second solar air heat collector, an air outlet of the second solar air heat collector is connected with one end of the heat accumulator, the other end of the heat accumulator is connected with a second air inlet of the drying chamber, an air outlet of the drying chamber is connected with an air inlet of the solar chimney, and an air outlet of the solar chimney is communicated with the atmosphere.
2. The solar drying apparatus of claim 1, wherein the thermal mass is a pebble bed.
3. The solar drying device of claim 1, wherein the air outlet of the drying chamber is connected with the air inlet of the solar chimney through a first pipeline, and a fan is arranged on the first pipeline.
4. The solar drying apparatus of claim 3, wherein the induced air port of the fan is in communication with the first duct and the outlet air port of the fan is in communication with the atmosphere.
5. The solar drying apparatus of any one of claims 1 to 4, wherein the air outlet of the first solar air collector is connected to the first air inlet of the drying chamber by a second conduit and the air inlet of the second solar air collector is in communication with the second conduit by a third conduit.
6. The solar drying apparatus of claim 1, wherein a flow control valve is disposed on the third conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051236.3A CN111121440A (en) | 2020-01-17 | 2020-01-17 | Solar drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051236.3A CN111121440A (en) | 2020-01-17 | 2020-01-17 | Solar drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111121440A true CN111121440A (en) | 2020-05-08 |
Family
ID=70490780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010051236.3A Pending CN111121440A (en) | 2020-01-17 | 2020-01-17 | Solar drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111121440A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104088Y (en) * | 2007-10-24 | 2008-08-20 | 王瑞娟 | Heat accumulation type solar drying equipment |
| CN101776377A (en) * | 2009-12-29 | 2010-07-14 | 北京林业大学 | Drying method by using solar energy and device thereof |
| CN101779818A (en) * | 2009-06-09 | 2010-07-21 | 上海海事大学 | Poronsmedium heat collection combined solar chimney food drier |
| CN205619583U (en) * | 2016-05-13 | 2016-10-05 | 兰州理工大学 | Solar drying device |
| CN207831812U (en) * | 2017-12-20 | 2018-09-07 | 上海置信节能环保有限公司 | A kind of groove type solar high-temperature heat accumulation hot wind supply drying system |
| CN211695797U (en) * | 2020-01-17 | 2020-10-16 | 烟台欧森纳地源空调股份有限公司 | Solar drying device |
-
2020
- 2020-01-17 CN CN202010051236.3A patent/CN111121440A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201104088Y (en) * | 2007-10-24 | 2008-08-20 | 王瑞娟 | Heat accumulation type solar drying equipment |
| CN101779818A (en) * | 2009-06-09 | 2010-07-21 | 上海海事大学 | Poronsmedium heat collection combined solar chimney food drier |
| CN101776377A (en) * | 2009-12-29 | 2010-07-14 | 北京林业大学 | Drying method by using solar energy and device thereof |
| CN205619583U (en) * | 2016-05-13 | 2016-10-05 | 兰州理工大学 | Solar drying device |
| CN207831812U (en) * | 2017-12-20 | 2018-09-07 | 上海置信节能环保有限公司 | A kind of groove type solar high-temperature heat accumulation hot wind supply drying system |
| CN211695797U (en) * | 2020-01-17 | 2020-10-16 | 烟台欧森纳地源空调股份有限公司 | Solar drying device |
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