CN102767937A - Greenhouse type solar heat pump combined drying device and method - Google Patents
Greenhouse type solar heat pump combined drying device and method Download PDFInfo
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- CN102767937A CN102767937A CN2011101143545A CN201110114354A CN102767937A CN 102767937 A CN102767937 A CN 102767937A CN 2011101143545 A CN2011101143545 A CN 2011101143545A CN 201110114354 A CN201110114354 A CN 201110114354A CN 102767937 A CN102767937 A CN 102767937A
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- 238000001035 drying Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title abstract description 8
- 239000012530 fluid Substances 0.000 claims description 22
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention relates to a solar drying device, and particularly discloses a greenhouse type solar heat pump combined drying device and a method, wherein the device comprises: a greenhouse; the air return fan is arranged in the greenhouse, one end of the air return fan is an air return port, the other end of the air return fan is an air exhaust port, and the air return fan penetrates through the side wall of the greenhouse through an air return pipe and extends out of the greenhouse; the fresh air fan is positioned outside the greenhouse, one end of the fresh air fan is a fresh air port, the other end of the fresh air fan is an air supply port, and the fresh air fan penetrates through the side wall of the greenhouse through an air supply pipe and extends into the greenhouse; a drying bed arranged inside the greenhouse; and the control center is connected with the return air fan and the fresh air fan. The invention can heat and dry the materials in the greenhouse by utilizing the heat of the solar energy with energy saving and high efficiency.
Description
Technical field
The present invention relates to the solar drying apparatus technical field, particularly a kind of greenhouse type combined solar energy heat pump drying device and method.
Background technology
Along with deeply carrying out of energy-saving and emission-reduction policy, the utilization of solar energy more and more widely, in mode such as development solar electrical energy generation etc., ancient solar thermal utilization is paid attention to by people again.The solar energy that the heat utilization of solar energy is used belongs to more low-grade ability, on being used in water heater, the effect of solar energy is just come out by increasing excavation in the dry field of low temperature (＜100 ℃).The drying device of solar energy mainly is divided into: greenhouse type, heat collection type and the monolithic devices that both combine.Wherein its greenhouse of greenhouse type solar drying apparatus is exactly a hothouse, and hothouse is directly accepted the radiant energy of the sun.This drying device is actually the solar energy greenhouse with ventilating capability, and it is mainly held a little is that heat-collecting part and hothouse are combined into one.During work, sunlight sees through the glass cover-plate direct irradiation on article to be dried, and part sunlight is absorbed by the greenhouse wall, so indoor temperature rises gradually, takes away the article moisture evaporated through cross-ventilation, and discharges from the exhaust chimney, reaches drying purpose.But the heat energy in this traditional structure exhaust directly runs off, and fails to recycle, and when being applicable to industrially drying, energy density is too low, and poor continuity can't satisfy the requirement of production.
Summary of the invention
The technical problem that (one) will solve
The technical problem that the present invention will solve be how energy-conservation, utilize solar heat that the material in the greenhouse is carried out heat drying efficiently.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a greenhouse type combined solar energy heat pump drying device, comprising:
The greenhouse;
Return air fan, it is inner to be arranged on said greenhouse, and the one of which end is a return air inlet, and the other end is exhaust outlet and reaches outside the greenhouse through the sidewall that backwind tube passes said greenhouse;
New wind blower fan, it is outside to be positioned at said greenhouse, and the one of which end is a fresh wind port, and the other end is air outlet and extend in the greenhouse through the sidewall that ajutage passes said greenhouse;
Drying bed, it is inner to be arranged on said greenhouse;
Control centre is connected with new wind blower fan with said return air fan.
In the technical scheme, also comprise further:
Condenser is positioned at said greenhouse, is arranged on the said ajutage, and the one of which end is said air outlet;
Evaporimeter is positioned at outside the said greenhouse, is connected between said backwind tube and the ajutage through evaporation tube, and said evaporimeter is connected with condenser through two loops.
Also comprise:
Expansion valve and compressor are connected with said control centre, lay respectively in two loops that said evaporimeter is connected with condenser.
Also comprise:
Heat exchanger is connected between return air fan and the evaporimeter through said backwind tube, is connected between evaporimeter and the condenser through said ajutage.
Wherein, be provided with second air-valve in the evaporation tube of said evaporimeter near exhaust outlet, be provided with the 4th air-valve in the evaporation tube of said evaporimeter near new wind blower fan, said second air-valve all is connected with control centre with the 4th air-valve.
End near exhaust outlet in the said backwind tube is provided with first air-valve, and the end near new wind blower fan in the said ajutage is provided with the 3rd air-valve, and said first air-valve all is connected with control centre with the 3rd air-valve.
Said drying bed is provided with the mud machine that turns over.
Said greenhouse inner top is fixed with the flow-disturbing blower fan through steelframe.
Said greenhouse is provided with feeding gate and discharge door.
In order to solve the problems of the technologies described above, the present invention also provides a kind of greenhouse type combined solar energy heat pump drying means, may further comprise the steps:
Step S1, control centre detect solar energy intensity and whether reach first setting value that satisfies greenhouse dehumidifying needs, are execution in step S2 then, otherwise judge solar energy intensity whether between first setting value and second setting value, are execution in step S3 then;
Second air-valve and the 4th air-valve are closed in step S2, control centre's control, open first air-valve and the 3rd air-valve, execution in step S21;
Air in step S21, the greenhouse is pumped by return air fan through return air inlet and is discharged through backwind tube and exhaust outlet, and the air outside the greenhouse is pumped by new wind blower fan through fresh wind port and sent in the greenhouse through ajutage and air outlet;
Step S3 control centre controls first air-valve to the, four air-valves and all opens, and the aperture of each air-valve is calculated and control by control centre according to solar energy intensity, and the flow direction and the distribution of definite return air, air-supply, realizes indoor heat demand balance between supply and demand.
Said step S1 also comprises:
If control centre monitors solar energy intensity and is lower than second setting value, then execution in step S4.
Also comprise:
First air-valve and the 3rd air-valve are closed in step S4, the control of said control centre; Open second air-valve and the 4th air-valve; The heat pump fluid that is evaporated device from the heat of the damp-heat air in greenhouse in the evaporimeter absorbs, and the hydrogenesis in the damp-heat air is also drained, and the heat pump fluid of said evaporimeter enters into compressor and is further heated pressurization; Heat pump fluid after the heating and pressurizing enters into condenser, carries out heat exchange with heat pump fluid in the condenser; The air that in evaporimeter, is dehumidified also enters into condenser; Carry out heat exchange with the heat pump fluid of condenser; The heat pump fluid temperature of condenser reduces; Heat pump fluid after temperature reduces gets into evaporimeter and carries out the heat that next round absorbs damp-heat air through expansion valve decrease temperature and pressure further, and the hot-air after the condenser heat exchange is sent in the greenhouse through air outlet.
Also comprise:
Preheater, carry out heat exchange from the damp-heat air in the greenhouse that return air fan is discharged with the air of lowering the temperature through evaporator.
(3) beneficial effect
Technique scheme has following beneficial effect:
1, the invention belongs to the equipment that the employing green house solar energy heat carries out sludge-drying, both satisfied the area needs of gathering solar energy, played the effect in mud warehouse again, and cost is far below solar thermal collector;
2, the present invention does replenishing of solar energy with source pump, and encapsulation process is done in the greenhouse, reclaims the heat the greenhouse in as much as possible, and the heat pump efficiency under this operating mode can improve greatly, has well reached efficiently, purpose of energy saving;
3, the regulative mode of evaporator with heat pump (absorbing return air heat or amount of heat), tunable carries out when realizing dehumidifying and concurrent heating effect, makes the whole system operation more stable.
Description of drawings
Fig. 1 is the structural representation of the greenhouse type combined solar energy heat pump drying device of the embodiment of the invention;
Fig. 2 is the cutaway view of the greenhouse type combined solar energy heat pump drying device of the embodiment of the invention;
Fig. 3 is the vertical view of the greenhouse type combined solar energy heat pump drying device of the embodiment of the invention;
Fig. 4 is the part-structure sketch map of the greenhouse type combined solar energy heat pump drying device of the embodiment of the invention;
Fig. 5 is the flow chart of the greenhouse type combined solar energy heat pump drying means of the embodiment of the invention.
Wherein, 1: the greenhouse; 2: backwind tube; 3: ajutage; 4: return air inlet; 5: return air fan; 6: heat exchanger; 7: the second air-valves; 8: the first air-valves; 9: exhaust outlet; 10: evaporimeter; 11: condenser; 12: air outlet; 13: the three air-valves; 14: the four air-valves; 15: new wind blower fan; 16: fresh wind port; 17: discharge door; 18: feeding gate; 19: turn over the mud machine; 20: the flow-disturbing blower fan; 21: steelframe; 23: drying bed; 24: the mud material; 25: expansion valve; 26: compressor; 27: evaporation tube.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
As shown in Figure 1, be the structural representation of the greenhouse type combined solar energy heat pump drying device of the embodiment of the invention; This device comprises greenhouse 1, return air fan 5, heat exchanger 6, condenser 11, evaporimeter 10, new wind blower fan 15, compressor 26, expansion valve 25, several air-valves and control centre's (not shown).Wherein condenser 11, evaporimeter 10, compressor 26 and expansion valve 25 constitute source pump.
Wherein, greenhouse 1 adopts the PC sunlight board to make, and perhaps the top in greenhouse 1 and sidepiece can be made with the PC sunlight board by the part that solar radiation arrives.There is return air fan 51 inside, greenhouse; One end of return air fan 5 is a return air inlet 4; The other end passes greenhouse 1 through backwind tube 2 sidewall is connected with greenhouse 1 outer heat pump preheating heat exchanger 6, and backwind tube 2 continues to extend after connecting heat exchanger 6, and another end of backwind tube 2 is an exhaust outlet 9.The inside in greenhouse 1 is equipped with condenser 11; One end of condenser 11 is an air outlet 12, and the other end passes greenhouse 1 through ajutage 3 sidewall is connected with heat exchanger 6, and ajutage 3 continues to extend after connecting heat exchanger 6; Be connected with new wind blower fan 15, the other end of new wind blower fan 15 is a fresh wind port 16.
Backwind tube 2 also is connected with evaporimeter 10 through evaporation tube 27 with ajutage 3, and evaporation tube 27 is provided with second air-valve 7 near the position of backwind tube 2, and evaporation tube 27 is provided with the 4th air-valve 14 near the position of ajutage 3.Position in the backwind tube 2 between the exhaust outlet 9 and second air-valve 7 is provided with first air-valve 8, and the position in the ajutage 3 between new wind blower fan 15 and the 4th air-valve 14 is provided with the 3rd air-valve 13.Each air-valve all is connected with control centre.
Evaporimeter 10 also is connected with condenser 11 with expansion valve 25 through compressor 26 respectively.Wherein compressor 26 is positioned at greenhouse 1, and expansion valve 25 is positioned at outside the greenhouse 1.Compressor 26 is connected with control centre with expansion valve 25.
Be provided with drying bed 23 in the greenhouse 1, be used to place mud material 24.Greenhouse 1 is provided with feeding gate 18 and discharge door 17, is used for mud material 24 is sent into the drying bed 23 of 1 inside, greenhouse, and dried mud material 24 is seen off.Drying bed 23 is provided with track between feeding gate 18 and discharge door 17, turn over mud machine 27 on the track and move back and forth along track, constantly destroys the compact texture of the mummification surface of mud material 7 forming and improves moisture and discharge efficient.
Greenhouse 1 inner top is fixed with flow-disturbing blower fan 20 through steelframe 21, is used for to 7 blowings of mud material, makes greenhouse 1 interior air seethe up and down and makes moisture fully spread therein.
As shown in Figure 5, for the flow chart of the greenhouse type combined solar energy heat pump drying means of the embodiment of the embodiment of the invention, also be the principle of device provided by the invention, comprise the steps:
Whether step S1, control centre detect solar energy intensity greater than first setting value that satisfies greenhouse dehumidifying needs, are execution in step S2 then, otherwise judge solar energy intensity whether between first setting value and second setting value, then execution in step S3; When if solar energy intensity is lower than second setting value, execution in step S4;
Second air-valve and the 4th air-valve are closed in the control of step S2, control centre, and judge whether to reach preset release, are execution in step S21 then;
Step S21, unlatching first air-valve and the 3rd air-valve; The air of the high water capacity of high temperature is pumped by return air fan through return air inlet in the greenhouse; And through backwind tube and exhaust outlet discharge, the air of the low water capacity of low temperature is pumped by new wind blower fan through fresh wind port and is sent in the greenhouse through ajutage and air outlet outside the greenhouse;
This part ozone becomes the air of the high water capacity of high temperature again through the heating of solar energy in the greenhouse, has taken away the moisture in the mud during discharge in passing, arrives the purpose of dehumidifying.
Step S3, control centre judge whether to reach preset release; Be then to control first air-valve to the, four air-valves all to open; The aperture of each air-valve is calculated and controls by control centre according to solar energy intensity; The unlatching of decision source pump, and the flow direction and the distribution of definite return air, air-supply realize indoor heat demand balance between supply and demand.
First air-valve and the 3rd air-valve are closed in step S4, control centre's control, open second air-valve and the 4th air-valve.Open source pump, particularly, the heat pump fluid that is evaporated device from the heat of the damp-heat air in the greenhouse in the evaporimeter absorbs, and the hydrogenesis in the damp-heat air is also drained, thereby reaches the purpose with damp-heat air dehumidifying in the greenhouse; This heat pump fluid enters into compressor and is further heated pressurization, and the heat pump fluid after the heating and pressurizing enters into condenser, carries out heat exchange with heat pump fluid in the condenser; The heat pump fluid that its heat is condensed in the device absorbs; In evaporimeter, entered into condenser by the air behind the dehumidifying and cooling; The heat of the heat pump fluid of condenser is got into the absorption of air of condenser; The heat pump fluid temperature reduces, and the heat pump fluid after temperature reduces gets into evaporimeter and carries out the heat that next round absorbs damp-heat air through expansion valve decrease temperature and pressure further; And the hot-air after the condenser heat exchange continues to enter in the greenhouse through air outlet.Preheater, also carry out taking turns heat exchange from return air fan damp-heat air of discharging and the air of lowering the temperature in the greenhouse simultaneously, to make full use of the heat of damp-heat air in the greenhouse through evaporator.
Can also when the heat of indoor damp-heat air is not enough, can also introduce other thermals source at the evaporimeter place according to actual conditions,,, reach balance just heat pump can absorb the heat dissipation capacity in the extraneous heat supplement greenhouse like surrounding air or water.
After adopting said apparatus and method, compared with prior art, the present invention has following beneficial effect:
1, the invention belongs to the equipment that the employing green house solar energy heat carries out sludge-drying, both satisfied the area needs of gathering solar energy, played the effect in mud warehouse again, and cost is far below solar thermal collector;
2, the present invention does replenishing of solar energy with source pump, and encapsulation process is done in the greenhouse, reclaims the heat the greenhouse in as much as possible, and the heat pump efficiency under this operating mode can improve greatly, has well reached efficiently, purpose of energy saving;
3, the regulative mode of evaporator with heat pump (absorbing return air heat or amount of heat), tunable carries out when realizing dehumidifying and concurrent heating effect, makes the whole system operation more stable.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (12)
1. greenhouse type combined solar energy heat pump drying device is characterized in that, comprising:
The greenhouse;
Return air fan, it is inner to be arranged on said greenhouse, and the one of which end is a return air inlet, and the other end is exhaust outlet and reaches outside the greenhouse through the sidewall that backwind tube passes said greenhouse;
New wind blower fan, it is outside to be positioned at said greenhouse, and the one of which end is a fresh wind port, and the other end is air outlet and extend in the greenhouse through the sidewall that ajutage passes said greenhouse;
Drying bed, it is inner to be arranged on said greenhouse;
Control centre is connected with new wind blower fan with said return air fan.
2. greenhouse type combined solar energy heat pump drying device as claimed in claim 1 is characterized in that, also comprise source pump, said source pump comprises:
Condenser is positioned at said greenhouse, is arranged on the said ajutage, and the one of which end is said air outlet;
Evaporimeter is positioned at outside the said greenhouse, is connected between said backwind tube and the ajutage through evaporation tube, and said evaporimeter is connected with condenser through two loops;
Expansion valve and compressor are connected with said control centre, lay respectively in two loops that said evaporimeter is connected with condenser.
3. greenhouse type combined solar energy heat pump drying device as claimed in claim 2 is characterized in that, also comprises:
Heat exchanger is connected between return air fan and the evaporimeter through said backwind tube, is connected between evaporimeter and the condenser through said ajutage.
4. greenhouse type combined solar energy heat pump drying device as claimed in claim 2; It is characterized in that; Be provided with second air-valve in the evaporation tube of said evaporimeter near exhaust outlet; Be provided with the 4th air-valve in the evaporation tube of said evaporimeter near new wind blower fan, said second air-valve all is connected with control centre with the 4th air-valve.
5. greenhouse type combined solar energy heat pump drying device as claimed in claim 2; It is characterized in that; End near exhaust outlet in the said backwind tube is provided with first air-valve; End near new wind blower fan in the said ajutage is provided with the 3rd air-valve, and said first air-valve all is connected with control centre with the 3rd air-valve.
6. greenhouse type combined solar energy heat pump drying device as claimed in claim 1 is characterized in that said drying bed is provided with the mud machine that turns over.
7. greenhouse type combined solar energy heat pump drying device as claimed in claim 1 is characterized in that said greenhouse inner top is fixed with the flow-disturbing blower fan through steelframe.
8. greenhouse type combined solar energy heat pump drying device as claimed in claim 1 is characterized in that said greenhouse is provided with feeding gate and discharge door.
9. greenhouse type combined solar energy heat pump drying means is characterized in that, may further comprise the steps:
Whether step S1, control centre detect solar energy intensity greater than first setting value that satisfies greenhouse dehumidifying needs, are execution in step S2 then, otherwise judge solar energy intensity whether between first setting value and second setting value, are execution in step S3 then;
Second air-valve and the 4th air-valve are closed in the control of step S2, control centre, and judge whether to reach preset release, are execution in step S21 then;
Step S21, unlatching first air-valve and the 3rd air-valve, the air in the greenhouse are pumped by return air fan through return air inlet and are discharged through backwind tube and exhaust outlet, and the air outside the greenhouse is pumped by new wind blower fan through fresh wind port and sent in the greenhouse through ajutage and air outlet;
Step S3, control centre judge whether to reach preset release; Be then to control first air-valve to the, four air-valves all to open; Calculate and control the aperture of each air-valve according to solar energy intensity by control centre; The unlatching of decision source pump, and the flow direction and the distribution of definite return air, air-supply realize indoor heat demand balance between supply and demand.
10. greenhouse type combined solar energy heat pump drying means as claimed in claim 9 is characterized in that said step S1 also comprises:
If control centre monitors solar energy intensity and is lower than second setting value, then execution in step S4.
11. greenhouse type combined solar energy heat pump drying means as claimed in claim 10 is characterized in that, also comprises:
First air-valve and the 3rd air-valve are closed in step S4, the control of said control centre; Open second air-valve and the 4th air-valve; And source pump is opened in control: the heat pump fluid that is evaporated device from the heat of the damp-heat air in greenhouse in the evaporimeter absorbs, and the hydrogenesis in the damp-heat air is also drained, and the heat pump fluid of said evaporimeter enters into compressor and is further heated pressurization; Heat pump fluid after the heating and pressurizing enters into condenser, carries out heat exchange with heat pump fluid in the condenser; The air that in evaporimeter, is dehumidified also enters into condenser; Carry out heat exchange with the heat pump fluid of condenser; The heat pump fluid temperature of condenser reduces; Heat pump fluid after temperature reduces gets into evaporimeter and carries out the heat that next round absorbs damp-heat air through expansion valve decrease temperature and pressure further, and the hot-air after the condenser heat exchange is sent in the greenhouse through air outlet.
12. greenhouse type combined solar energy heat pump drying means as claimed in claim 11 is characterized in that, also comprises:
Preheater, carry out heat exchange from the damp-heat air in the greenhouse that return air fan is discharged with the air of lowering the temperature through evaporator.
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| CN201110114354.5A CN102767937B (en) | 2011-05-04 | 2011-05-04 | Greenhouse type solar heat pump combined drying device and method |
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| CN201110114354.5A CN102767937B (en) | 2011-05-04 | 2011-05-04 | Greenhouse type solar heat pump combined drying device and method |
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Cited By (15)
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| CN102923929A (en) * | 2012-12-03 | 2013-02-13 | 湖北国新天汇能源有限公司 | Method and device for drying sludge through solar energy |
| CN103471345A (en) * | 2013-09-17 | 2013-12-25 | 东莞市风火轮热能科技有限公司 | Method for drying industrial materials by using high-temperature heat pump and radiation |
| CN103512342A (en) * | 2013-09-18 | 2014-01-15 | 江门市华延自动化设备制造有限公司 | Energy-saving heat pump humidity removing drying room and control method thereof |
| CN103693829A (en) * | 2013-12-23 | 2014-04-02 | 常州市新港热电有限公司 | Sludge treatment equipment and process |
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| CN103983095A (en) * | 2014-05-26 | 2014-08-13 | 常州海卡太阳能热泵有限公司 | Heat recovery heat pump and energy-storage solar heat pump united drying system and control method |
| CN105854321A (en) * | 2016-06-03 | 2016-08-17 | 苟仲武 | Method and device for evaporating and drying materials |
| CN106595283A (en) * | 2016-11-29 | 2017-04-26 | 维克（天津）有限公司 | High-temperature dehumidifying and drying system |
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| CN107178995A (en) * | 2017-04-21 | 2017-09-19 | 云南省烟草公司昆明市公司 | A kind of hot and humid gas dehumidification, waste heat recovery and heating integrated machine |
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| CN109099648A (en) * | 2018-09-27 | 2018-12-28 | 杨凌菲拉利农业装备技术有限公司 | A kind of solar energy greenhouse and heat pump united drying system |
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