CN101907384B - Solar drying device - Google Patents
Solar drying device Download PDFInfo
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- CN101907384B CN101907384B CN2010102527798A CN201010252779A CN101907384B CN 101907384 B CN101907384 B CN 101907384B CN 2010102527798 A CN2010102527798 A CN 2010102527798A CN 201010252779 A CN201010252779 A CN 201010252779A CN 101907384 B CN101907384 B CN 101907384B
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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
- Y02E10/44—Heat exchange systems
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Abstract
The invention relates to a wood solar drying device. The drying device adopts an integral end-fan structure of a greenhouse and a heat collector and combines the advantages of the greenhouse and the heat collector. The heat sources of the drying device comprise a heat-pipe solar heat collector located on a south-end wall and an integral arched solar heat collector, and the heat collectors have large area and high heat efficiency. The two heat collecting systems can be used independently or cooperatively according to required drying temperature, and temperature control is flexible and stable. A heat-accumulation air-guiding wall is arranged inside the drying device so as to ensure the continuity and the uniformity of drying. A technical method of the wood solar drying device is as follows: when solar energy is sufficient in the daytime, the drying device is in a heating and drying stage, and when solar energy is insufficient in the night or on cloudy days, the drying device is in a heat preservation stage. The solar drying device has stable operation, high solar conversion efficiency and obviously reduced drying energy consumption, thereby having low drying cost and high drying quality.
Description
Technical field
The present invention relates to a kind of utilization of solar heat, particularly a kind of working fluid flows through the solar drying apparatus of heat collector.
Background technology
The energy is the important substance basis of economic construction and social development.Since the world to growing, the worsening shortages of conventional energy resource, the oil price of energy demand rise steadily, the pressure of global warming and environment; Countries in the world turn to strategic sight the exploitation of regenerative resource for seeking energy security and human social.So reproducible new forms of energy will become the most important thing of 21st century energy development.And solar energy is being paid attention to by each national industry-by-industry, and is being attracted increasing concern as a kind of cleaning, cheapness, never depleted regenerative resource.The solar energy resources of China is very abundant, and according to statistics, the annual solar radiation total amount that receives in Chinese land is equivalent to 2.4 hundred million tons of standard coals.Making full use of solar energy resources is that China realizes the strategy of sustainable development, advances one of important content of resource-conserving and friendly environment society.
There is abundant solar energy resources in China, has territory year of 2/3 radiated time to surpass 2200h approximately, and year radiation amount surpasses 5000MJ/m
2The solar energy that shines the vast area of China the whole year is equivalent to more than 2000 times of whole energy that conventional energy resource provides such as annual at present coal, oil, natural gas and various faggots etc.
Solar energy is intermittent energy source, and energy resource density is low, discontinuous, unstable, and for effectively solving effective energy storage problem of low-cost energy solar energy, the solar dryer of China's development can reduce 2 types: greenhouse (radiation) type, heat-collector type.
Typical greenhouse type drying chamber structure is that the top, chamber is frame structure building transparent, the translucent glass material with three side walls (east, west, south), and transparent cover plate is generally plastics.Solar thermal collector is one of part of hothouse.Because the hot isolation performance of most transparent materials is relatively poor, and is bigger through the heat conduction loss of wall.Simultaneously, there is the solar energy of considerable part to see through hothouse and do not absorbed or do not project recipient and lose by recipient.
Heat-collector type solar hothouse tool opaque wall, solar energy acceptor separates with hothouse, and hot-air or hot water are transmitted to hothouse by solar energy acceptor through circulation air flue or pipeline.Hothouse adopts complete Design on thermal insulation, to reduce thermal loss.Because solar energy acceptor in night and cloudy day meeting loses heat, so this design should be adopted the assistant heating source, uses the whole moisture content of the dry timber of this hothouse lower, equipment manufacturing cost is high than greenhouse type.
Utilize the research of solar energy drying material numerous; For example: Granted publication number discloses a kind of heat collector-greenhouse type solar dryer for the Chinese patent of CN201413009Y; Comprise the solar energy vacuum tube air collector that places on the support body; Above said solar energy vacuum tube air collector one side, be provided with the greenhouse type solar dryer that has inlet, outlet, the gas outlet of said solar energy vacuum tube air collector is connected through the air inlet of pipeline with greenhouse type solar dryer bottom.The efficient that this drier absorbs solar energy is low, and thermal loss is big, and the baking temperature fluctuating range is big during dried material, and dried materials quality is poor, and drying efficiency is low.
Summary of the invention
The objective of the invention is problem to the prior art existence; A kind of solar drying apparatus of continuous drying timber is provided; Solar drying apparatus heat absorption efficiency of the present invention is high, can significantly reduce energy consumption for drying, and thermal loss is little; Thereby the reduction drying cost, dried material has dry mass preferably.
For realizing the object of the invention, one aspect of the present invention provides a kind of solar drying apparatus, comprising:
Collect solar energy and convert it into the collecting system of heat energy, its integral body is arch, and inside has cavity;
Drying system is positioned at the cavity of collecting system, comprises the hothouse of placing material to be dried and the accumulation of heat air-guiding wall that is positioned at the hothouse both sides and the wind-guiding baffle plate that is positioned at hothouse one end.
Wherein, collecting system comprises greenhouse type air collector and heat pipe solar thermal collector, and heat pipe solar thermal collector is positioned at the inner end of greenhouse type air collector, and it is inner that instant heating tube solar heat-collecting device is wrapped in the greenhouse type air collector.
Particularly, described greenhouse type air collector is arch, and inside has cavity, the end sealing of its cavity, and the other end is established closing door to be opened/closed.
Wherein, hothouse is positioned at closing door one end of said greenhouse type air collector cavity, and said heat pipe solar thermal collector is positioned at the blind end of said greenhouse type air collector cavity.
Wherein, the top of greenhouse type air collector and both walls portion are made up of range upon range of dash board and base plate, leave the space between dash board and the base plate, form the hollow layer that supplies drying medium to flow.Drying medium changes into heat energy behind hollow layer absorbed inside solar energy, be used for dry material to be dried.
Particularly, the thickness of said hollow layer is 20-100mm.
Wherein, said dash board is by a kind of being made in PC sunlight board, plastic sheeting or the pmma material.
Particularly, the light transmittance of said dash board >=0.6.
Wherein, said base plate is made by metallic plate or plastic sheeting.
Particularly, also be provided with adiabator layer in the bottom of base plate, said adiabator layer is made up of polyurethane, alumina silicate, rock wool or glass fibre.
Wherein, the base plate of the side in the both walls portion of greenhouse type air collector is provided with hot-blast outlet, and the base plate of opposite side is provided with the cold wind import; The bottom of cold wind import is provided with the heat supply blower fan; Drying medium from the hollow layer of cold wind import inflow greenhouse type air collector, is discharged from hot-blast outlet behind the heat of acquisition under the drive of blower fan; Flow into drying system, the heating material to be dried.
Particularly, offer porting to be opened/closed on the both walls of greenhouse type air collector respectively, be used to reduce the temperature and humidity in the hothouse.
Wherein, described porting is arranged on the bottom of the both walls of greenhouse type air collector.
Particularly, open and close porting through automatic control system.
Particularly, be provided with the arch heat collector dividing plate consistent, the hollow layer of greenhouse type air collector is divided into a plurality of hollow layer locellus along greenhouse type air collector length direction with greenhouse type air collector shape in the inside of the hollow layer of greenhouse type air collector.The hollow layer locellus guarantees to absorb the uniformity of exchange heat behind the solar energy.
Especially, each independently the hollow layer locellus have a cold wind import and corresponding hot-blast outlet respectively.
Wherein, heat pipe solar thermal collector is made up of heat pipe and circulating fan, and the release end of heat of heat pipe is near hothouse, and heat absorbing end is passed the blind end of said greenhouse type air collector, is positioned at the outside of said greenhouse type air collector.
Particularly, said heat pipe is horizontal positioned from top to bottom, is arranged in into two groups, and said circulating fan is between two groups of heat pipes, and under the drive of circulating fan, the drying medium that has absorbed heat flows to hothouse by heat pipe collector, dry material to be dried.
Wherein, the wind-guiding baffle plate is between hothouse and heat pipe solar thermal collector.
Particularly, the wind-guiding baffle plate is between hothouse and heat pipe solar thermal collector release end of heat, and under the drive of circulating fan, the drying medium that has absorbed heat flows to drying system by heat pipe collector, dry material to be dried.
Wherein, the accumulation of heat air-guiding wall is made up of the many independently metal heat accumulation pipes that phase change heat storage material is housed, be used for heat energy is transformed into heat of transformation storage, and with the drying medium uniform distribution.
Particularly, said metal heat accumulation pipe is the both sides that fork row or in-line arrangement mode are arranged in hothouse, forms described accumulation of heat air-guiding wall, realizes described heat accumulation and uniform distribution drying medium.
Especially, said metal heat accumulation pipe adopts vertical, level or oblique arrangement mode to carry out arranged.
Particularly, the wind rate of crossing of said accumulation of heat air-guiding wall is greater than 30% (the described wind rate of crossing is the percentage of crossing wind area and accumulation of heat air-guiding wall body of wall windward side area perpendicular to accumulation of heat air-guiding wall body of wall).
Heat accumulation pipe adopts aluminum material, and the phase-change material that be equipped with inside is a paraffin.
The process of timber solar drying apparatus, when daytime, solar energy was sufficient, drying device was in the intensification drying stage, and when night or cloudy solar energy were not enough, drying device was in the heat preservation and dryness stage.
The present invention has following beneficial effect:
1, solar drying apparatus of the present invention adopts greenhouse type and heat-collector type solar drying apparatus structure combining; Take into account both advantages; Its origin of heat is formed in heat pipe solar thermal collector and whole greenhouse type air collector two parts that are arch, and heat collector area is big, and the thermal efficiency is high; Two heat collectors can use according to required baking temperature alone or synergistically, and temperature control is flexible, baking temperature is stable.
2, solar drying apparatus of the present invention is provided with the accumulation of heat air-guiding wall of even distribution and accumulation of heat, and the wind rate of crossing of accumulation of heat air-guiding wall is greater than 30%, and is even to guarantee drying medium flow velocity on the length direction of hothouse, guarantees the synchronous drying of whole stacking yard material.
3, accumulation of heat air-guiding wall of the present invention is made up of the metal heat accumulation pipe that the solid-liquid phase-changeable heat-storing material is housed that is no less than 1 row; The metal heat accumulation pipe is pitched arranged on the dry gas stream loop direction; Accumulation of heat air-guiding wall volume is little; But heat storage capacity is strong, and can determine the consumption of heat accumulation pipe according to the amount of intensity of sunshine and material to be dried, and it is good to have good practicality.
4, adopt the inventive method desiccated wood, cost is low, and timber can continuous drying, can improve the dry mass of timber.
5, the present invention adopts hot-air as heat transferring medium, and hot-air is a heat transferring medium, also is drying medium, in dry run, only has a heat exchange, and the heat utilization efficiency of heat transferring medium is higher.
Description of drawings
Fig. 1 is the positive cross-sectional schematic of timber solar drying apparatus of the present invention;
Fig. 2 is an A-A cross-sectional schematic among Fig. 1;
Fig. 3 is a B-B cross-sectional schematic among Fig. 1.
Description of reference numerals: 1. closing door; 2. heat-insulation layer; 3. dash board; 4. arch solar thermal collector; 5. timber; 6. wind-guiding baffle plate; 7. heat pipe; 8. heat pipe solar thermal collector; 9. axial-flow type circulating fan; 10. accumulation of heat air-guiding wall; 11. arch heat collector hot-blast outlet; 12. arch heat collector dividing plate; 13. porting; 14. centrifugal heat supply blower fan; 15. arch heat collector cold wind import; 16. hothouse; 17. hollow layer; 18. hollow layer locellus; 19. metal heat accumulation pipe; 20. base plate; 21. fan house; 22. thermocouple temperature sensor; 23. the heat absorbing end of heat pipe; 24. the release end of heat of heat pipe; 25. automatic control box.
The specific embodiment
Describe specific embodiment of the present invention with reference to the accompanying drawings in detail.
As shown in Figure 1, solar drying apparatus of the present invention is by collecting solar energy, and changes into heat energy, is used for the collecting system and drying system composition of dry material to be dried.
With reference to Fig. 1,2 and 3, collecting system comprises greenhouse type air collector 4 and heat pipe solar thermal collector 8, and wherein greenhouse type air collector 4 integral body are arch; Its inwall is provided with heat-insulation layer 2; Inner formation cross section is the cavity of arch, the end sealing of cavity, and the other end is established closing door 1 to be opened/closed; The blind end of cavity is processed by insulation material, forms heat-insulation layer 2.The internal cavities of greenhouse type air collector 4 is divided into 2 parts by wind-guiding baffle plate 6 along its length, and is as illustrated in fig. 1 and 2, promptly comprises the fan house 21 that is used to place heat pipe solar thermal collector 8 near the hothouse 16 of closing door one end with near blind end.
Integral body is top and the two sides side wall of arch of the greenhouse type air collector 4 of arch and is made up of range upon range of dash board 3 and base plate 20, offers porting 13 in the bottom of its two sides side wall, is used to reduce the interior temperature and humidity of hothouse 16.
Leave the space between the dash board 3 of greenhouse type air collector 4 and the base plate 20, forming thickness is the hollow layer 17 of 20-100mm, and drying medium changes into heat energy behind hollow layer 17 absorbed inside solar energy, be used for dry material to be dried.
Dash board is made by PC sunlight board, plastic sheeting or pmma material, light transmittance >=0.6.Base plate is made by metallic plate or plastic sheeting, and the bottom of base plate also is provided with the heat-insulation layer of being made up of polyurethane, alumina silicate, rock wool or glass fibre, and the present embodiment dash board adopts the PC sunlight board to process, and base plate adopts metallic plate to process, and heat-insulation layer is made up of rock wool.
The base plate of the side in the two sides side wall of greenhouse type air collector 4 is provided with hot-blast outlet 11; The base plate of opposite side is provided with cold wind import 15, is provided with centrifugal heat supply blower fan 14 near the bottom of a side wall that is provided with cold wind import 15, and drying medium is under the drive of blower fan 14; Flow into the hollow layer of greenhouse type air collector from the cold wind import; Discharge from hot-blast outlet behind the heat that obtains, flow into drying system, the heating material to be dried.
Offer porting to be opened/closed 13 on the both walls of greenhouse type air collector 4 respectively through automatic control system 25 controls; Be used to reduce the temperature and humidity in the hothouse, described porting 13 is arranged on the bottom of the both walls of greenhouse type air collector 4.
Be provided with the heat collector dividing plate 12 of arch in the inside of the hollow layer 17 of greenhouse type air collector 4, hollow layer 17 is divided into a plurality of independently hollow layer locellus 18, guarantee to absorb the uniformity of exchange heat behind the solar energy.Each independently is respectively equipped with a cold wind import 15 and corresponding hot-blast outlet 11 on the base plate 20 of hollow layer locellus 18.
Wherein, From top to bottom form by horizontal positioned heat pipe 7 and the circulating fan between two groups of heat pipes 79 by two groups for heat pipe solar thermal collector 8; The release end of heat of heat pipe 7 is positioned at the inside of the cavity of greenhouse type air collector 4; Near hothouse 16, promptly the release end of heat of heat pipe 7 is near the blind end of greenhouse type air collector 4, and the heat absorbing end of heat pipe 7 is passed the blind end of the cavity of greenhouse type air collector 4; Be the outside that the heat absorbing end of heat pipe 7 is positioned at heat-insulation layer 2, be used to absorb the solar energy of collecting system outside.
Under the drive of circulating fan 9, the solar energy that heat pipe solar thermal collector 8 is absorbed passes to drying medium through the release end of heat of heat pipe 7, and the drying medium that has absorbed heat flows to hothouse 16 by fan house 21, dry material to be dried.
Like Fig. 1, shown in 2 and 3; Comprise that the drying system of hothouse 16, two sides accumulation of heat air-guiding wall 10 and the wind-guiding baffle plate 6 of placing material to be dried is arranged in the internal cavities of collecting system; Be the internal cavities that drying system is arranged in the arch of greenhouse type air collector 4, and near closing door one end of greenhouse type air collector 4 cavitys; Accumulation of heat air-guiding wall 10 is between the two sides side wall of hothouse 16 and greenhouse type air collector 4.
Accumulation of heat air-guiding wall 10 is made up of the many independently metal heat accumulation pipes 19 that phase change heat storage material is housed; Be used for heat energy is transformed into heat of transformation storage; And with the drying medium uniform distribution, the wind rate of crossing of accumulation of heat air-guiding wall 10 is greater than 30% (the described wind rate of crossing is the percentage of crossing wind area and accumulation of heat air-guiding wall body of wall windward side area perpendicular to accumulation of heat air-guiding wall body of wall).
Metal heat accumulation pipe 19 is the both sides that fork row or in-line arrangement mode are arranged in hothouse 16, forms described accumulation of heat air-guiding wall 10, realizes described heat accumulation and uniform distribution drying medium.
That the metal heat accumulation pipe adopts is vertical, level or oblique arrangement mode are carried out arranged, can determine the consumption of metal heat accumulation pipe according to the amount of intensity of sunshine and material to be dried.
Heat accumulation pipe 19 adopts aluminum material, and the phase-change material that be equipped with inside is a paraffin.
Specify the course of work of solar energy Wood drying apparatus of the present invention below in conjunction with accompanying drawing 1-3.
The baking temperature of hothouse 16 interior woods to be dried 5 is set at T among the present invention; The temperature that the thermocouple temperature sensor 22 of automatic control system is measured heat pipe solar thermal collector 8 heat pipe release end of heat 24 is T
1The temperature of the hollow layer 17 of greenhouse type air collector 4 is T
2, the temperature in the hothouse 16 is T
3, the temperature of accumulation of heat air-guiding wall 10 is T
4
1, wood to be dried is positioned in the hothouse 16, close the closing door 1 of greenhouse type air collector 4 after, solar drying apparatus is placed under the sunlight, with the heat absorbing end 23 of heat pipe solar thermal collector 8 towards the sun, so that fully absorb solar energy;
2, open the power supply of automatic control system, through the baking temperature T of automatic control box 25 setting woods to be dried 5, through thermocouple temperature sensor 22 The real time measure T
1, T
2, T
3, T
4
3, automatic control system is according to the temperature T of measuring
1, T
2, T
3, T
4Value and timber set baking temperature T and compare, carry out heat supply, desiccated wood;
1.: work as T
1-T
3>=2, T
3During＜T, the temperature T of instant heating tube solar heat-collecting device 8 heat pipe release end of heat 24
1Be higher than the temperature T in the hothouse 16
3More than 2 ℃, and the temperature T in the hothouse 16
3When being lower than the setting baking temperature of wood to be dried 5, circulating fan 9 starts, to the timber 5 in the hothouse 16 heat up heating, drying; Under the drive of circulating fan 9, drying medium will be treated seasoned wood 5 and accumulation of heat air-guiding wall 10 from the heat transferred that heat pipe solar thermal collector 8 obtains, the temperature T in the dry wood to be dried 5, hothouse
3Raise accumulation of heat air-guiding wall 10 store heat gradually.
2.: work as T
2-T
3>=2, T
3During＜T, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
2The temperature T that is higher than timber 5
3More than 2 ℃, and the temperature T in the hothouse 16
3When being lower than the setting baking temperature of wood to be dried 5, heat supply blower fan 14 starts, and under the drive of heat supply blower fan 14, the drying medium in the hothouse 16 flows into the hollow layer 17 of greenhouse type air collector 4 from the cold wind import 15 of greenhouse type air collector 4 side wall base plates 20; Absorb solar energy, obtain heat, discharge from the hot-blast outlet 11 that is positioned at greenhouse type air collector 4 another side wall base plates 20 behind the formation hot-air; Flow into hothouse 16, be hothouse 16 heat supplies, be used for timber 5 and accumulation of heat air-guiding wall 10 in the dry kiln 16; Carry out heat exchange, the air after the heat exchange flows into the hollow layer 17 of greenhouse type air collector 4 again; Be heated once more, form hot-air, the inflow hothouse 16 that moves in circles carries out exchange heat; Heating, desiccated wood, and through accumulation of heat air-guiding wall 10 store heat, the temperature T in hothouse 16
3Reach the setting baking temperature T of timber, heat supply blower fan 14 cuts out.
3.: work as T
2-T>=2, T
2-T
3≤2 o'clock, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
2The setting baking temperature that is higher than timber 5 is more than T2 ℃ the time, and the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be higher than the hothouse temperature T
3During 2 ℃ of less thaies, heat supply blower fan 14 quits work, and greenhouse type air collector 4 stops to hothouse 16 heat supplies; Circulating fan 9 is in running order all the time, and heat pipe solar thermal collector 8 is timber in hothouse 16 5 and the heat supply of accumulation of heat wind deflector all the time.
4.: work as T
2-T>=2, T
2-T
3＞2 o'clock, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
2The setting baking temperature that is higher than timber 5 is more than T2 ℃ the time, and the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be higher than the hothouse temperature T
3In the time of 2 ℃, heat supply blower fan 14 starts, and greenhouse type air collector 4 is to hothouse 16 heat supplies; Circulating fan 9 is in running order all the time, and heat pipe solar thermal collector 8 is timber in hothouse 16 5 and the heat supply of accumulation of heat wind deflector all the time.
5.: work as T
2-T≤2, T
2-T
3＞2 o'clock, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
22 ℃ of setting baking temperature T less thaies that are higher than timber 5, and the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be higher than the hothouse temperature T
3In the time of 2 ℃, heat supply blower fan 14 starts, and greenhouse type air collector 4 is to hothouse 16 heat supplies; Circulating fan 9 is in running order all the time, and heat pipe solar thermal collector 8 is timber in hothouse 16 5 and the heat supply of accumulation of heat wind deflector all the time.
6.: work as T
2-T≤2, T
2-T
3≤2 o'clock, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
22 ℃ of setting baking temperature T less thaies that are higher than timber 5, and the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be higher than the hothouse temperature T
3During 2 ℃ of less thaies, heat supply blower fan 14 quits work, and greenhouse type air collector 4 stops to hothouse 16 heat supplies; Circulating fan 9 is in running order all the time, and heat pipe solar thermal collector 8 is timber in hothouse 16 5 and the heat supply of accumulation of heat wind deflector all the time.
7.: work as T
3-T>=2 o'clock, i.e. temperature T in the hothouse 16
3The setting baking temperature that is higher than timber 5 is more than T2 ℃ the time, and circulating fan 9 is opened, and automatic control system is opened porting 13, realizes cooling and hydrofuge, keeps baking temperature stable of wood to be dried, guarantees the quality of dry back timber.
8.: work as T
2-T
3≤2 o'clock, i.e. the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be higher than the hothouse temperature T
3During 2 ℃ of less thaies, heat supply blower fan 14 cuts out, and the hollow layer 17 of greenhouse type air collector 4 promptly plays insulation effect.
9.: work as T
4＞T
3, T
1≤T
3, T
2≤T
3The time, i.e. temperature T in the accumulation of heat air-guiding wall 10
4Be higher than the temperature T in the hothouse 16
3, the temperature T of while heat pipe solar thermal collector 8 heat pipe release end of heat 24
1Be lower than the temperature T in the hothouse 16
3, the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be lower than the temperature T of timber 5
3The time, circulating fan 9 starts, and the heat transferred hothouse with the accumulation of heat air-guiding wall stores is hothouse 16 functions, desiccated wood 5.
10.: work as T
4≤T
3, T
1≤T
3, T
2≤T
3The time, i.e. temperature T in the accumulation of heat air-guiding wall 10
4Be less than or equal to the temperature T in the hothouse 16
3, the temperature T of while heat pipe solar thermal collector 8 heat pipe release end of heat 24
1Be lower than the temperature T in the hothouse 16
3, the temperature T of the hollow layer 17 of greenhouse type air collector 4
2Be lower than the temperature T of timber 5
3The time, circulating fan 9 cuts out, and quits work.
Claims (7)
1. solar drying apparatus comprises:
Collect solar energy and convert it into the collecting system of heat energy; Wherein, described collecting system comprises greenhouse type air collector (4) and heat pipe solar thermal collector (8), and said greenhouse type air collector (4) is arch; Inside has cavity; The one end sealing of said cavity, the other end is established closing door to be opened/closed (1), and heat pipe solar thermal collector (8) is positioned at the blind end of greenhouse type air collector;
Drying system; Be positioned at the cavity of collecting system; Comprise the hothouse (16) of placing material to be dried and be positioned at the accumulation of heat air-guiding wall (10) of hothouse (16) both sides and be positioned at the wind-guiding baffle plate (6) of hothouse (16) one ends that wherein said wind-guiding baffle plate (6) is positioned between hothouse (16) and the heat pipe solar thermal collector (8).
2. drying device as claimed in claim 1; The top and the both walls portion that it is characterized in that greenhouse type air collector (4) are made up of range upon range of dash board (3) and base plate (20); Leave the space between dash board (3) and the base plate (20), form the hollow layer (17) that supplies drying medium to flow.
3. drying device as claimed in claim 2; The base plate (20) that it is characterized in that the side in the both walls portion of greenhouse type air collector (4) is provided with hot-blast outlet (11); The base plate of opposite side (20) is provided with cold wind import (15); The bottom of cold wind import (15) is provided with heat supply blower fan (14), and drying medium is under the drive of heat supply blower fan (14), and the hollow layer (17) that flows into greenhouse type air collector (4) from cold wind import (15) obtains to discharge from hot-blast outlet (11) behind the heat; Flow in the hothouse (16), so that the heating material to be dried.
4. like the said drying device of claim 2; It is characterized in that being provided with the arch heat collector dividing plate (12) consistent, the hollow layer (17) of greenhouse type air collector (4) is divided into a plurality of hollow layer locellus (18) along greenhouse type heat collector (4) length direction with greenhouse type air collector shape in hollow layer (17) inside.
5. like the arbitrary described drying device of claim 1-4; It is characterized in that said heat pipe solar thermal collector (8) is made up of heat pipe (7) and circulating fan (9); The release end of heat of heat pipe (7) is near hothouse (16), and the blind end (2) that heat absorbing end is passed said greenhouse type air collector (4) is positioned at said greenhouse type air collector (4) outside.
6. drying device as claimed in claim 1 is characterized in that described accumulation of heat air-guiding wall (10) is made up of the many metal heat accumulation pipes (19) that phase change heat storage material is housed.
7. drying device as claimed in claim 6, the wind rate of crossing that it is characterized in that said accumulation of heat air-guiding wall (10) is greater than 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102527798A CN101907384B (en) | 2010-08-13 | 2010-08-13 | Solar drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102527798A CN101907384B (en) | 2010-08-13 | 2010-08-13 | Solar drying device |
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| Publication Number | Publication Date |
|---|---|
| CN101907384A CN101907384A (en) | 2010-12-08 |
| CN101907384B true CN101907384B (en) | 2012-07-04 |
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|---|---|---|---|
| CN2010102527798A Expired - Fee Related CN101907384B (en) | 2010-08-13 | 2010-08-13 | Solar drying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103120327A (en) * | 2011-11-20 | 2013-05-29 | 江苏仁安高新技术有限公司 | Drying machine of marine products |
| CN103673520A (en) * | 2012-09-25 | 2014-03-26 | 昆山尚达智机械有限公司 | Solar timber drying equipment |
| CN104165502A (en) * | 2014-08-22 | 2014-11-26 | 魏春旺 | Efficient solar fruit and vegetable drying room |
| CN104197649A (en) * | 2014-09-12 | 2014-12-10 | 魏春旺 | Heat pump and solar energy combined heat supply drying room working under two modes |
| CN105066601A (en) * | 2015-08-31 | 2015-11-18 | 李宏江 | Solar universal drying machine |
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| CN111637698B (en) * | 2019-03-01 | 2022-02-15 | 北京林业大学 | Drying device and method for continuously drying wood by using solar energy |
| CN110332769B (en) * | 2019-05-14 | 2020-11-13 | 北京戴纳实验科技有限公司 | Laboratory is with drying device that disinfects |
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