CN214665639U - Drying system - Google Patents
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- CN214665639U CN214665639U CN202022081406.0U CN202022081406U CN214665639U CN 214665639 U CN214665639 U CN 214665639U CN 202022081406 U CN202022081406 U CN 202022081406U CN 214665639 U CN214665639 U CN 214665639U
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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
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The utility model provides a drying system. The utility model discloses a drying system, including photovoltaic light and heat board photovoltaic unit, heat-retaining unit, drying unit and heat pump unit, including photovoltaic unit, heat-retaining unit, drying unit and heat pump unit; the photovoltaic unit is used for converting solar energy into heat for drying the object to be dried; the heat storage unit is used for storing the heat converted by the photovoltaic unit in the drying system in an energy storage mode; the drying system uses the stored heat to dry the object to be dried in a drying mode; the drying unit is used for providing a drying channel for the object to be dried; the heat pump unit is used for transferring heat to the drying unit; the heat pump unit can exchange heat with the photovoltaic unit and/or the heat storage unit, and at least part of the photovoltaic unit and/or the heat output module of the heat pump unit is positioned in the drying unit. Drying system promotes energy utilization through setting up heat-retaining unit and drying unit, improves drying efficiency.
Description
Technical Field
The utility model relates to a solar photovoltaic field, in particular to drying system.
Background
Drying is an important link in industrial production, and the traditional drying can not meet the requirements of modern industry from the aspects of sanitation, quality and appearance. Under the background of energy crisis, the goal of pursuing the drying industry is to realize the closed-loop work of green energy, green system and system of the drying system.
At present, most of domestic industrial factories and civil plants adopt different technologies to dry and dehumidify materials, and because the moisture content in the materials is too high, if the materials are not dried in time, the materials are rotten and lost to different degrees. The traditional drying and dehumidifying method comprises electric heating, natural air drying, coal or natural gas heating and drying and the like, and although the problem of damp and putrefaction of materials can be solved to a certain extent, the energy consumption is high and the drying efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a drying system that drying efficiency is high, and the power consumption is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a drying system comprises a photovoltaic unit, a heat storage unit, a drying unit and a heat pump unit, wherein the photovoltaic unit is used for converting solar energy into heat for drying an object to be dried; the heat storage unit is used for storing the heat converted by the photovoltaic unit in the drying system in an energy storage mode; the drying system uses the stored heat to dry the object to be dried in a drying mode; the drying unit is used for providing a drying channel for the object to be dried; the heat pump unit is used for transferring heat to the drying unit; the heat pump unit can exchange heat with the photovoltaic unit and/or the heat storage unit, and at least part of the photovoltaic unit and/or the heat output module of the heat pump unit is positioned in the drying unit.
Preferably, the drying unit comprises a drying chamber, an air duct and a fan; the fan is installed in the wind channel, holds the material of treating drying in the drying chamber, through the fan blows the heat to the drying chamber treats the drying material and dries.
Preferably, the photovoltaic unit comprises a photovoltaic hot plate, a hot water storage tank and a third heat exchanger; the heat storage water tank comprises a first interface, a second interface, a third interface and a fourth interface; photovoltaic light and heat board one end is connected the first interface of heat storage water tank, the second interface connection of heat storage water tank the other end of photovoltaic light and heat board, the third interface connection of heat storage water tank the import of third heat exchanger, the fourth interface connection of heat storage water tank the export of third heat exchanger.
Preferably, the heat pump unit comprises a compressor, a first heat exchanger, a throttle valve and a second heat exchanger; the second heat exchanger comprises a first interface, a second interface, a third interface and a fourth interface; one end of the compressor is connected with one end of the first heat exchanger, the other end of the first heat exchanger is connected with one end of the throttling valve, the other end of the throttling valve is connected with the first interface of the second heat exchanger, and the second interface of the second heat exchanger is connected with the other end of the compressor.
Preferably, the heat storage unit comprises a heat storage buried pipe; one end of the heat storage ground buried pipe is connected with the fourth interface of the heat storage water tank, the outlet of the third heat exchanger and the fourth interface of the second heat exchanger, and the other end of the heat storage ground buried pipe is connected with the third interface of the heat storage water tank, the inlet of the third heat exchanger and the third interface of the second heat exchanger.
Preferably, the heat storage unit further comprises a first reversing module and a second reversing module; the first reversing module comprises a port a, a port b, a port c and a port d4, the port a is connected with a third port of the hot water storage tank, the port b is connected with an inlet of the third heat exchanger, the port c is connected with a third port of the second heat exchanger, and the port d is connected with one end of the heat storage ground buried pipe; the second reversing module comprises e, f, g and h4 interfaces, the e interface is connected with a fourth interface of the hot water storage tank, the f interface is connected with an outlet of the third heat exchanger, and the g interface is connected with a fourth interface of the second heat exchanger; the h interface is connected with the other end of the heat storage buried pipe 7.
Preferably, the first heat exchanger and the third heat exchanger are the heat output module, and the first heat exchanger and the third heat exchanger are located in the air duct.
Preferably, in a heat supply drying mode, if the temperature of the water discharged from the heat storage water tank is greater than a first temperature threshold, a first drying loop formed by the photovoltaic hot plate is used for drying the material to be dried; if the temperature of the water discharged from the heat storage water tank is greater than a second temperature threshold and less than a first temperature threshold, drying the material to be dried by using a second drying loop formed by the photovoltaic photo-thermal plate and the heat pump; and if the water outlet temperature of the heat storage water tank is smaller than the second temperature threshold, drying the material to be dried by using a third drying loop formed by the heat storage unit and the heat pump.
Preferably, one side of the drying chamber is provided with a material inlet, one end of the drying chamber is provided with a material outlet, and the other end of the drying chamber is provided with a wet air outlet.
Preferably, the drying system further comprises a power supply unit, the power supply unit is used for supplying the electric energy converted by the photovoltaic unit to the drying system, and the power supply unit comprises a charge-discharge controller, an inverter and a distribution box; the charge and discharge controller is connected with the photovoltaic unit and is used for charging and discharging the photovoltaic unit; the inverter is connected with the charge and discharge controller and is used for converting the direct current output by the charge and discharge controller into alternating current; the distribution box is connected with the inverter and used for outputting alternating current output by the inverter to the heat storage unit and the drying unit.
The utility model discloses a drying system sets up multiple complementary drying system, through the intercoupling of photovoltaic unit, heat pump unit and heat-retaining unit, promotes energy utilization and rates, improves drying efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the drying system of the present invention.
Detailed Description
The following provides an example with reference to fig. 1, which further illustrates the embodiment of the drying system of the present invention. The drying system of the present invention is not limited to the description of the following embodiments.
As shown in fig. 1, the present application provides a drying system, a photovoltaic unit, a heat storage unit, a drying unit and a heat pump unit; the photovoltaic unit is used for converting solar energy into heat for drying the object to be dried; the heat storage unit is used for storing the heat converted by the photovoltaic unit in the energy storage mode of the drying system; the drying system uses the stored heat to dry the object to be dried in a drying mode; the drying unit is used for providing a drying channel for the object to be dried; a heat pump unit for transferring heat to the drying unit; the heat pump unit can exchange heat with the photovoltaic unit and/or the heat storage unit, and at least part of the heat output module of the photovoltaic unit and/or the heat pump unit is positioned in the drying unit.
The utility model discloses a drying system, photovoltaic unit, heat-retaining unit, drying unit and heat pump unit; the photovoltaic unit is used for converting solar energy into heat for drying the object to be dried; the heat storage unit is used for storing the heat converted by the photovoltaic unit in the energy storage mode of the drying system; the drying system uses the stored heat to dry the object to be dried in a drying mode; the drying unit is used for providing a drying channel for the object to be dried; a heat pump unit for transferring heat to the drying unit; the heat pump unit can exchange heat with the photovoltaic unit and/or the heat storage unit, and at least part of the heat output module of the photovoltaic unit and/or the heat pump unit is positioned in the drying unit. Set up multiple complementary drying system, through the intercoupling of photovoltaic unit, heat pump unit and heat-retaining unit, promote energy utilization and rate, improve drying efficiency. The drying system of the present application is described in further detail below in conjunction with fig. 1.
The drying unit comprises a drying chamber 17, a third heat exchange pipe 9, an air duct and a fan 11; the fan 11 is installed in the wind channel, holds the material of treating drying in the drying chamber 17, blows the heat to the drying chamber 17 through the fan 11, treats the drying material and dries.
The photovoltaic unit comprises a photovoltaic hot plate 1, a heat storage water tank 4 and a third heat exchanger 9; the heat storage water tank 4 comprises a first interface, a second interface, a third interface and a fourth interface; one end of the photovoltaic solar panel 1 is connected with a first interface of the heat storage water tank 4, a second interface of the heat storage water tank 4 is connected with the other end of the photovoltaic solar panel 1, a third interface of the heat storage water tank 4 is connected with an inlet of the third heat exchanger 9, and a fourth interface of the heat storage water tank 4 is connected with an outlet of the third heat exchanger 9.
The heat pump unit comprises a compressor 13, a first heat exchanger 14, a throttle valve 15 and a second heat exchanger 12; the second heat exchanger 12 comprises a first interface, a second interface, a third interface and a fourth interface; one end of the compressor 13 is connected with one end of the first heat exchanger 14, the other end of the first heat exchanger 14 is connected with one end of the throttle valve, the other end of the throttle valve is connected with the first interface of the second heat exchanger 12, and the second interface of the second heat exchanger 12 is connected with the other end of the compressor 13.
The heat storage unit comprises a heat storage buried pipe 7, a first reversing module 6 and a second reversing module 8; one end of the heat storage ground buried pipe 7 is connected with the fourth interface of the heat storage water tank 4, the outlet of the third heat exchanger 9 and the fourth interface of the second heat exchanger 12, and the other end of the heat storage ground buried pipe 7 is connected with the third interface of the heat storage water tank 4, the inlet of the third heat exchanger 9 and the third interface of the second heat exchanger 12. The first reversing module 6 comprises a port a, a port b, a port c and a port d4, the port a is connected with a third port of the heat storage water tank 4, the port b is connected with an inlet of a third heat exchanger 9, the port c is connected with a third port of a second heat exchanger 12, and the port d is connected with one end of the heat storage buried pipe 7; the second reversing module 8 comprises e, f, g and h4 interfaces, the e interface is connected with the fourth interface of the heat storage water tank 4, the f interface is connected with the outlet of the third heat exchanger 9, and the g interface is connected with the fourth interface of the second heat exchanger 12; the h interface is connected with the other end of the heat accumulation buried pipe 7. The first heat exchanger 14 and the third heat exchanger 9 are heat output modules, and the first heat exchanger 14 and the third heat exchanger 9 are positioned in the air duct. The third heat exchanger 9 may be a hot water coil, or may be other structures for storing heat.
In the heat supply drying mode, if the temperature of the water discharged from the heat storage water tank 4 is higher than a first temperature threshold value, a first drying loop formed by the photovoltaic unit is used for drying the material to be dried; if the temperature of the water discharged from the heat storage water tank 4 is higher than a second temperature threshold and lower than a first temperature threshold, drying the material to be dried by using a second drying loop formed by the photovoltaic unit and the heat pump unit; if the water temperature of the outlet water of the heat storage water tank 4 is smaller than the second temperature threshold value, the material to be dried is dried by using a third drying loop formed by the heat storage unit and the heat pump unit. Wherein the first temperature threshold is any value in the range of 38-42 ℃, and the second temperature threshold is any value in the range of 23-27 ℃.
Further, the drying system further includes necessary control valves such as three-way valves and four-way valves, and as shown in the embodiment shown in fig. 1, the drying system further includes a first valve 2, a second valve 3, a circulating water pump 5, a first reversing module 6, a second reversing module 8, a first variable frequency water pump 10, a second variable frequency water pump 21 and a water replenishing valve 20. In the embodiment shown in fig. 1, the first valve is used as an exhaust valve, the second valve 3 is used as an electric control valve, the first direction changing module 6 is used as a four-way valve, and the second direction changing module 8 is used as a four-way valve. The first valve 2 and the second valve 3 may be one valve, or a combination of two or more valves, and the direction valve may be two three-way valves, or three two-way valves.
As shown in fig. 1, a material inlet 16 is provided at one side of the drying chamber 17, a material outlet 18 is provided at one end of the drying chamber 17, and a wet air outlet 19 is provided at the other end of the drying chamber 17. The wet material to be dried is conveyed from the material inlet 16 to the drying chamber 17 for drying, the dried material is discharged from the material outlet 18, and the wet air is discharged from the wet air outlet 19 at the upper end of the drying chamber, so as to complete the whole material drying process.
Further, the heat storage unit comprises a heat storage ground buried pipe 7, and the ground buried pipe 7 is connected with the photovoltaic solar panel 1 and is used for storing the heat energy converted by the photovoltaic solar panel 1 into soil. In the drying system under the energy storage mode, the heat of the photovoltaic solar panel 1 sequentially passes through the first valve 2, the second valve 3, the heat storage water tank 4, the first reversing module 6, the buried pipe 7, the second reversing module 8, the heat storage water tank 4 and the circulating water pump 5 and flows back to the photovoltaic solar panel 1 to form a heat storage loop. When the sun illumination is sufficient in summer or the materials are not required to be dried, the solar energy is stored in the soil through the heat storage loop, and the utilization rate of energy is improved.
Further, the drying unit comprises a drying chamber 17, an air duct and a fan 11; the fan 11 is arranged in the air duct, the first heat exchanger 14 and the third heat exchanger 9 are also arranged in the air duct, the drying chamber 17 contains the object to be dried, and heat is blown to the drying chamber 17 through the fan 11; in the heat supply drying mode, if the temperature of the water discharged from the heat storage water tank 4 is higher than a first temperature threshold value, the drying system dries the material to be dried by using a first drying loop; if the temperature of the water discharged from the heat storage water tank 4 is higher than the second temperature threshold and lower than the first temperature threshold, drying the material to be dried by using a second drying loop and the heat pump unit; and if the water temperature of the outlet water of the heat storage water tank 4 is smaller than the second temperature threshold value, drying the material to be dried by utilizing a third drying loop and the heat pump unit. The drying unit realizes the switching of three drying modes according to the different outlet water temperature adjustment system valves of heat storage water tank 4 and opens to carry out quick drying to the material, improve the drying efficiency of material.
Specifically, heat of the photovoltaic solar panel 1 sequentially passes through the first valve 2, the second valve 3, the heat storage water tank 4, the first reversing module 6, the third heat exchanger 9, the first variable frequency water pump 10, the second reversing module 8, the heat storage water tank 4 and the circulating water pump 5 and flows back to the photovoltaic solar panel 1 to form a first drying loop.
Specifically, heat of the photovoltaic solar panel 1 sequentially passes through the first valve 2, the second valve 3, the heat storage water tank 4, the first reversing module 6, the second heat exchanger 12, the second variable frequency water pump 21, the second reversing module 8, the heat storage water tank 4 and the circulating water pump 5 and flows back to the photovoltaic solar panel 1 to form a second drying loop.
Specifically, the heat in the buried pipe 7 flows back to the buried pipe 7 through the first reversing module 6, the second heat exchanger 12, the second variable frequency water pump 21 and the second reversing module 8 in sequence to form a third drying loop.
As shown in fig. 1, the heat pump unit of the present invention includes a compressor 13, a first heat exchanger 14, a throttle valve 15, and a second heat exchanger 12; the second heat exchanger 12 comprises a first interface, a second interface, a third interface and a fourth interface; one end of the compressor 13 is connected with one end of the first heat exchanger 14, the other end of the first heat exchanger 14 is connected with one end of the throttle valve, the other end of the throttle valve is connected with the first interface of the second heat exchanger 12, and the second interface of the second heat exchanger 12 is connected with the other end of the compressor 13. The heat pump is a ground source heat pump. The utility model discloses the simple structure of heat pump is compact, through increasing heat pump system evaporation side temperature, has improved the system energy efficiency ratio, reduces the operation energy consumption of system effectively.
As shown in fig. 1, the drying system of the present invention further includes a power supply unit, wherein the power supply unit includes a charge/discharge controller, an inverter, and a distribution box; the charging and discharging controller is connected with the photovoltaic unit 1 and is used for charging and discharging the photovoltaic unit 1; the inverter is connected with the charge and discharge controller and is used for converting the direct current output by the charge and discharge controller into alternating current; the distribution box is connected with the inverter and used for outputting the alternating current output by the inverter to the heat storage unit and the drying unit. The utility model discloses power supply unit supplies power to drying system's compressor, water pump, makes full use of solar energy resource, greatly reduced the operation energy consumption of system.
The drying system of the present invention is described in detail with reference to fig. 1.
When the sun is sufficiently illuminated or the materials are not required to be dried in summer, the solar energy can be stored in the soil through the buried pipe. The heat storage mode sequentially comprises the following steps: the photovoltaic photo-thermal plate comprises a photovoltaic photo-thermal plate 1, an exhaust valve, an electric regulating valve, a heat storage water tank 4, an a interface and a d interface of a four-way valve, a buried pipe 7, an h interface and an e interface of the four-way valve, the heat storage water tank 4, a circulating water pump 5 and the photovoltaic photo-thermal plate 1.
The drying mode adjusts the opening and closing states of the branch valves according to the water outlet temperature of the heat storage water tank, so that materials are fully dried.
When the temperature of the outlet water of the heat storage water tank is higher than 40 ℃, the material is dried by adopting solar radiation heat, and the solar energy dries the material independently and sequentially: the device comprises a photovoltaic light and heat plate 1, an exhaust valve, an electric regulating valve, a heat storage water tank 4, an interface a and an interface b of a four-way valve, a hot water coil pipe, a variable frequency water pump 10, an interface f and an interface e of the four-way valve, the heat storage water tank 4, a circulating water pump 5 and the photovoltaic light and heat plate, wherein in the drying process, a fan 11 is always in an open state to blow heat of the hot water coil pipe to a drying chamber 17, wet materials are conveyed to the drying chamber 17 from a material inlet 16 to be dried, the dried materials are discharged from a material outlet 18, and wet air is discharged from a wet air outlet 19 at the upper end of the drying chamber to complete the whole material drying process. At this time, the first valve 2 is an exhaust valve, the second valve 3 is an electric control valve, the first reversing module 6 is a four-way valve, the second reversing module 8 is a four-way valve, the third heat exchanger 9 is a hot water coil, the second heat exchanger 12 is an evaporator, and the first heat exchanger 14 is a condenser. When the temperature of the water discharged from the heat storage water tank is between 25 and 40 ℃, the materials are dried by adopting a ground source heat pump and solar energy complementary heat supply. The heat pump and the solar energy complementary heat supply are used for drying the materials and sequentially pass through: photovoltaic light and heat board 1, discharge valve, electrical control valve, hot water storage tank 4, the a interface and the c interface of cross valve, the evaporimeter, frequency conversion water pump 21, the g interface and the e interface of cross valve, hot water storage tank 4, circulating water pump 5 and photovoltaic light and heat board 1, when hot water flows through from the evaporimeter side, evaporimeter surface temperature when improving heat pump operation, the heat pump operation heats and passes through in proper order: the compressor 13, the condenser 14, the throttle valve 15, the evaporator 12 and the fan are opened all the time in the drying process so as to finish the material transportation and drying process. When the temperature of the water discharged from the heat storage water tank is lower than 25 ℃, the materials are dried by adopting a coupling mode of heat storage soil and a ground source heat pump, and the steps are as follows: buried pipe 7, d interface and the c interface of cross valve, evaporimeter, frequency conversion water pump 21, g interface and the h interface and the buried pipe 7 of cross valve, ground source heat pump operation heating is dry to pass through in proper order: a compressor 13, a condenser 14, a throttle valve 15 and an evaporator 12, wherein a fan is always opened during the drying process to complete the drying process of the materials.
In the process of drying materials, electric energy required by system operation is converted from solar energy through the photovoltaic photo-thermal plate, part of solar radiation energy is converted into direct current through the photovoltaic photo-thermal plate, and the direct current is transmitted to the drying system through the inverter in the form of alternating current, so that sufficient electric energy is provided for normal operation of the compressor and the water pump, solar energy resources are fully utilized, and the operation energy consumption of the system is greatly reduced.
In addition, in the heat pump operation process, the temperature of the evaporator side is increased, so that the heat pump operation efficiency can be improved, and the system energy efficiency ratio is increased in the heat pump heating process. The system energy efficiency ratio calculation formula is as follows:
in the formula: beta is a1For compressor efficiency, typically 0.8; beta is a2For heat exchanger efficiency, typically 0.9; beta is a3For motor efficiency, typically 0.95; beta is a4For system efficiency, it is typically 0.8. When the evaporation temperature is increased, the energy efficiency ratio of the system is increased, the heating capacity of the ground source heat pump is greatly improved, and the operation energy consumption of the system is reduced.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A drying system, characterized by: the solar photovoltaic heat storage system comprises a photovoltaic unit, a heat storage unit, a drying unit and a heat pump unit;
the photovoltaic unit is used for converting solar energy into heat for drying the object to be dried;
the heat storage unit is used for storing the heat converted by the photovoltaic unit in the drying system in an energy storage mode; the drying system uses the stored heat to dry the object to be dried in a drying mode;
the drying unit is used for providing a drying channel for the object to be dried;
the heat pump unit is used for transferring heat to the drying unit;
the heat pump unit can exchange heat with the photovoltaic unit and/or the heat storage unit, and at least part of the photovoltaic unit and/or the heat output module of the heat pump unit is positioned in the drying unit.
2. The drying system of claim 1, wherein: the drying unit comprises a drying chamber (17), an air duct and a fan (11); the drying device is characterized in that the fan (11) is installed in the air duct, a material to be dried is contained in the drying chamber (17), and the fan (11) blows heat to the drying chamber (17) to dry the material to be dried.
3. The drying system of claim 1, wherein: the photovoltaic unit comprises a heat storage water tank (4), a photovoltaic hot plate (1) and a third heat exchanger (9);
the heat storage water tank (4) comprises a first interface, a second interface, a third interface and a fourth interface; one end of the photovoltaic solar heat plate (1) is connected with a first interface of the heat storage water tank (4), a second interface of the heat storage water tank (4) is connected with the other end of the photovoltaic solar heat plate (1), a third interface of the heat storage water tank (4) is connected with an inlet of a third heat exchanger (9), and a fourth interface of the heat storage water tank (4) is connected with an outlet of the third heat exchanger (9).
4. The drying system of claim 3, wherein: the heat pump unit comprises a second heat exchanger (12), a compressor (13), a first heat exchanger (14) and a throttle valve (15);
the second heat exchanger (12) comprises a first interface, a second interface, a third interface and a fourth interface;
one end of the compressor (13) is connected with one end of the first heat exchanger (14), the other end of the first heat exchanger (14) is connected with one end of the throttling valve, the other end of the throttling valve is connected with the first interface of the second heat exchanger (12), and the second interface of the second heat exchanger (12) is connected with the other end of the compressor (13).
5. The drying system of claim 4, wherein: the heat storage unit comprises a heat storage buried pipe (7);
one end of the heat storage ground buried pipe (7) is connected with a fourth interface of the heat storage water tank (4), an outlet of the third heat exchanger (9) and a fourth interface of the second heat exchanger (12), and the other end of the heat storage ground buried pipe (7) is connected with a third interface of the heat storage water tank (4), an inlet of the third heat exchanger (9) and a third interface of the second heat exchanger (12).
6. The drying system of claim 5, wherein: the heat storage unit also comprises a first reversing module (6) and a second reversing module (8);
the first reversing module (6) comprises a port a, a port b, a port c and a port d4, the port a is connected with a third port of the hot water storage tank (4), the port b is connected with an inlet of the third heat exchanger (9), the port c is connected with a third port of the second heat exchanger (12), and the port d is connected with one end of the heat storage buried pipe (7);
the second reversing module (8) comprises e, f, g and h4 interfaces, the e interface is connected with a fourth interface of the hot water storage tank (4), the f interface is connected with an outlet of the third heat exchanger (9), and the g interface is connected with a fourth interface of the second heat exchanger (12); the h interface is connected with the other end of the heat storage buried pipe (7).
7. The drying system of claim 6, wherein: the drying unit comprises an air duct, the first heat exchanger (14) and the third heat exchanger (9) are the heat output modules, and the first heat exchanger (14) and the third heat exchanger (9) are located in the air duct.
8. Drying system according to any of claims 3-7, characterized in that:
in a heat supply drying mode, if the temperature of the water discharged from the heat storage water tank (4) is higher than a first temperature threshold value, a first drying loop formed by the photovoltaic photo-thermal plate (1) is used for drying the material to be dried;
if the temperature of the water discharged from the heat storage water tank (4) is higher than a second temperature threshold and lower than a first temperature threshold, drying the material to be dried by using a second drying loop formed by the photovoltaic photo-thermal plate (1) and the heat pump;
if the water temperature of the outlet water of the heat storage water tank (4) is smaller than a second temperature threshold value, the material to be dried is dried by using a third drying loop formed by the heat storage unit and the heat pump.
9. The drying system of claim 2, wherein: one side of the drying chamber (17) is provided with a material inlet (16), one end of the drying chamber (17) is provided with a material outlet (18), and the other end of the drying chamber (17) is provided with a wet air outlet (19).
10. The drying system of claim 1, wherein: the drying system further comprises a power supply unit, wherein the power supply unit is used for supplying the electric energy converted by the photovoltaic unit to the drying system and comprises a charge-discharge controller, an inverter and a distribution box;
the charge and discharge controller is connected with the photovoltaic unit and is used for charging and discharging the photovoltaic unit;
the inverter is connected with the charge and discharge controller and is used for converting the direct current output by the charge and discharge controller into alternating current;
the distribution box is connected with the inverter and used for outputting alternating current output by the inverter to the heat storage unit and the drying unit.
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| CN202022081406.0U CN214665639U (en) | 2020-09-21 | 2020-09-21 | Drying system |
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| CN202022081406.0U CN214665639U (en) | 2020-09-21 | 2020-09-21 | Drying system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017932A (en) * | 2021-11-23 | 2022-02-08 | 南京航空航天大学 | Zero-carbon water boiler |
| CN114877630A (en) * | 2022-04-08 | 2022-08-09 | 常州工学院 | Self-powered heat pump system applied to grain drying |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017932A (en) * | 2021-11-23 | 2022-02-08 | 南京航空航天大学 | Zero-carbon water boiler |
| CN114017932B (en) * | 2021-11-23 | 2022-09-27 | 南京航空航天大学 | Zero-carbon water boiler |
| CN114877630A (en) * | 2022-04-08 | 2022-08-09 | 常州工学院 | Self-powered heat pump system applied to grain drying |
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