CN114322330A - An integrated circulating drying water intake device and method based on solar energy - Google Patents

Abstract

The invention discloses a solar energy-based integrated circulating drying water intake device and method, belonging to the technical field of solar drying, comprising a solar heating system, a drying system, an alternate moisture absorption and desorption system, a forced liquid cooling system and a power supply system, in particular; The solar heating system, the drying system and the moisture absorption side of the alternating moisture absorption and desorption system are connected in sequence to form a drying loop; the solar heating system is also connected with the desorption side of the alternating moisture absorption and desorption system and the forced liquid cooling system Connected in sequence to form a water intake loop; the power supply system supplies power to the device. The circulating drying water intake device and method exemplified in the present invention combines convection drying, radiation drying, and moisture absorption and desorption air water intake technologies to implement a coordinated operation strategy. Work efficiency, and can effectively extend the continuous and stable operation of the device.

Description

An integrated circulating drying water intake device and method based on solar energy

technical field

The present invention relates to the technical field of solar drying, in particular to a solar energy-based integrated circulating drying water intake device and method.

Background technique

Solar drying technology uses solar energy to dry various materials. The main types of solar drying devices are greenhouse type, collector type, combined collector and greenhouse, combined solar collector and heat pump system, etc.

The adsorption air water intake technology is a technical form in which fresh water is obtained through the regeneration process of the desiccant after the liquid or solid desiccant is used to absorb the moisture in the wet air. Among them, the liquid absorption method has many defects such as complex device structure, large volume, long single cycle time, certain corrosiveness and unsafe chemical reagents. Therefore, the fresh water obtained by this method is not suitable for safe drinking water. In addition, compared with the refrigeration condensation method, the adsorption air water intake technology using solid desiccant has the advantages of no electrical or mechanical energy input, small footprint, few moving parts, low operating noise, simple device structure, low operating cost, and long life. It has many advantages, such as long time, dehumidification using solar collectors and so on.

Semiconductor refrigeration technology is a new type of refrigeration technology that achieves refrigeration through the Peltier effect. When the current passes through the closed circuit composed of semiconductors, it can generate heat absorption or exothermic effect on both sides of the semiconductor refrigeration sheet, which will make the heat of the cold end of the semiconductor refrigerator flow to the hot end, so that the temperature of the cold end will continue to decrease, and the temperature of the hot end will continue to rise. high, the purpose of cooling and cooling can be achieved.

Most of the existing solar drying systems have a relatively single function, which is limited to dehydrating and drying the dry materials, and cannot realize the recovery and reuse of the moisture removed from the dry materials. In addition, the current mainstream solar adsorption water intake device has a long moisture absorption and desorption cycle, which is limited to the operation mode of "night adsorption and daytime desorption", and most adsorbents are easily saturated with water, which makes further dehumidification and drying impossible. The solar energy utilization rate and operating efficiency of the solar-like drying system are very low.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a solar energy-based integrated circulating drying water intake device and method. The solar heat collection technology, semiconductor refrigeration technology, phase change heat storage technology, shell-and-tube air-cooling design, electric flow channel exchange design and solar drying water intake technology are coupled to implement the coordinated operation strategy, and the organic combination of each link of the device is realized. It can greatly improve the utilization rate of solar energy and the working efficiency of the device, and can effectively prolong the continuous and stable operation time of the device.

The technical scheme adopted by the present invention to solve its technical problems is:

Provided is an integrated circulating drying water intake device based on solar energy, including a solar heating system, a drying system, an alternate moisture absorption and desorption system, a forced liquid cooling system and a power supply system, specifically:

The solar heating system, the drying system and the hygroscopic side of the alternating moisture absorption and desorption system are connected in sequence to form a drying loop;

The solar heating system is also connected with the desorption side of the alternating moisture absorption and desorption system and the forced liquid cooling system in sequence to form a water intake loop;

The power supply system powers the device.

Further, the solar heating system includes a first heating system and a second heating system, the air outlet of the second heating system is connected to the air inlet of the drying system, and is used to continuously provide hot air for the drying system ; the air outlet of the first heating system is connected to the desorption side inlet of the alternate moisture absorption and desorption system, and is used for dehumidification and desorption of the desorption side of the alternate moisture absorption and desorption system;

The moisture absorption side of the alternating moisture absorption and desorption system is connected to the second heating system and the drying system, and is used for dehumidifying the humid air discharged from the drying system and delivering the dehumidified air to the air inlet of the second heating system; The desorption side of the alternating moisture absorption and desorption system is also connected to the first heat supply system, and the first heat supply system is used to dehumidify and desorb the desorption side of the alternating moisture absorption and desorption system;

The inlet of the forced liquid cooling system is connected to the outlet of the desorption side of the alternating moisture absorption and desorption system, and the air inlet of the first heating system is connected to the outlet of the forced liquid cooling system, and the forced liquid cooling system is used for cooling high-temperature humid air, to form fresh water, and deliver the condensed and dehydrated dry cold air to the air inlet of the first heating system.

Further, the first heating system and the second heating system are both composed of vacuum tube solar heat collectors, the vacuum tube solar heat collectors include vacuum heat collector tubes, and a heat storage kit is arranged in the vacuum heat collector tubes. , the top of the vacuum heat collecting tube is communicated with the confluence chamber, and also includes a fixing tube and a fixing bracket for fixing;

The number of evacuated tube solar heat collectors in the first heating system is greater than the number of evacuated tube solar heat collectors in the second heating system.

Further, the drying system includes a drying box and a material rack, and the drying box is provided with a material tray installed on the material rack; the upper end surface of the drying box is inclined and provided with The glass cover plate is provided with a sink under the lower side of the glass cover plate, and the outlet of the sink tank is connected to a fresh water collection bottle; the drying box is located under the higher side of the glass cover plate with a wet an air outlet, the moist air outlet communicates with the hygroscopic side of the alternate hygroscopic desorption system.

Further, an air guide is arranged below the material rack, and the air guide is connected to the air outlet of the second heating system.

Further, the alternating moisture absorption and desorption system includes a first adsorption bed, a second adsorption bed, a first electric flow channel exchanger and a second electric flow channel exchanger, and the inlets of the first adsorption bed and the second adsorption bed are The ends are respectively connected with the wet air outlet and the air outlet of the first heating system through the first electric flow channel exchanger; the outlet ends of the first adsorption bed and the second adsorption bed are respectively connected with the second electric flow channel exchanger through the second electric flow channel exchanger. The air inlet of the forced liquid cooling system is connected with the air inlet of the second heating system.

Further, the forced liquid cooling system includes a steam condensing unit, a shell-and-tube air cooling unit, a cooling liquid circulation driving unit and a semiconductor cooling unit.

Further, the air inlet of the steam condensing unit is connected with the air outlet on the desorption side of the alternating moisture absorption and desorption system, and the air outlet of the steam condensing unit is also connected with the air inlet of the first heating system;

Alternatively, the shell-and-tube air-cooled heat dissipation unit includes a convection cavity, and the convection cavity is provided with a heat exchange tube bundle and vertically arranged baffle fins; the heat exchange tube bundle extends to the steam condensation unit; the The upper and other side of the convection cavity is provided with an air outlet of an air-cooling unit, and the air outlet of the air-cooling unit is connected to the first induced draft fan through a three-way valve;

Alternatively, the cooling liquid circulation driving unit includes a semiconductor cooling bin and a transfer bin respectively communicating with both ends of the heat exchange tube bundle, the transfer bin is connected to a circulating water tank, and the circulating water tank is cooled with the semiconductor through a circulating pump warehouse connection;

Alternatively, the semiconductor cooling unit includes a cooler, a semiconductor cooling sheet and a radiator connected in sequence, and an air outlet of the semiconductor cooling unit is connected to the first induced draft fan through a pipe.

A solar energy-based integrated cycle drying water intake method, characterized in that, using the solar energy-based integrated cycle drying water intake device according to any one of claims 2-8, specifically, comprising the following steps:

S1: The cold air is heated by the first heating system and the second heating system;

S2: The high-temperature dry air flowing out of the second heating system dries the material in the drying system to generate moist air, most of the moist air is discharged through the moist air outlet, and a small part of the moist air is in the top glass of the drying system. The inner surface of the cover plate condenses into water droplets and flows into the fresh water collection bottle;

S3: the moist air discharged in step S2 flows into the moisture absorption side of the alternating moisture absorption and desorption system, dehumidifies the humid air through the alternating moisture absorption and desorption system, and the dehumidified gas re-enters the second heating system to complete the next drying and dehydration cycle;

S4: When the moisture absorption side of the alternating moisture absorption and desorption system in step S3 reaches the water absorption saturation state, the original moisture absorption side is quickly switched to the new desorption side, and the original desorption side is rapidly switched to the new moisture absorption side, realizing the continuous and rapid moisture absorption process and desorption process. Switching and synchronous operation, the high-temperature dry air in the first heating system enters the new desorption side of the alternating moisture absorption and desorption system, and dehumidifies and takes water from the new desorption side of the alternating moisture absorption and desorption system;

S5: The humid air with higher temperature generated in step S4 flows into the forced liquid cooling system, and is condensed in the forced liquid cooling system to form fresh water; the dry cold air after condensation and dehumidification enters the air inlet of the first heating system again to start the next cycle ; When the wind pressure in the first heating system is too high, the excess dry cold air will be automatically discharged into the atmosphere.

Further, both the first heating system and the second heating system are composed of vacuum tube solar heat collectors, and the number of vacuum tube solar heat collectors in the first heating system is more than that of the second heating system. Number of evacuated tube solar collectors in thermal systems.

Compared with the prior art, the beneficial effects of the present invention are:

1. The solar energy-based integrated circulating drying water intake device and method exemplified in the present invention combines convection drying, radiation drying, and moisture absorption and desorption air water intake technologies, and combines solar heat collection technology, semiconductor refrigeration technology, and phase Variable heat storage technology, shell-and-tube air-cooling design, electric flow channel exchange design and solar drying water technology are coupled to implement a coordinated operation strategy. The organic combination of each link of the device can greatly improve the utilization rate of solar energy and the working efficiency of the device. It can effectively prolong the continuous and stable operation of the device;

2. The solar energy-based integrated circulating drying water intake device and method exemplified in the present invention designs an electric flow channel exchanger and proposes an alternate moisture absorption and desorption method. Compared with the traditional adsorption water intake technology, the The seamless continuous switching and synchronous operation of the adsorption process and the desorption process solves the drawback that the adsorbent does not absorb water after it is saturated with water, thereby effectively improving the utilization rate of solar energy and the operating efficiency of the device;

3. The solar-based integrated circulating drying water intake device and method exemplified in the present invention proposes a double-effect cooling forced condensation mechanism, which uses semiconductor refrigeration and shell-and-tube heat exchange double cooling modes to force the circulating cooling liquid to cool, Greatly reduces the working temperature of the circulating coolant, and improves the water intake and water intake efficiency of the system;

4. The solar energy-based integrated circulating drying water intake device and method exemplified in the present invention has a uniform/rectified design for the drying system, which greatly improves the uniformity of hot air flow at the material tray of the drying system, and effectively reduces the amount of hot air in the drying system. The local loss during the flow in the drying system also ensures the dehydration quality of the materials in the drying system and improves the drying efficiency.

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of a heat storage kit of the present invention;

FIG. 3 is a schematic view of the structure of the confluence chamber of the present invention;

FIG. 4 is a schematic structural diagram of the drying system of the present invention;

5 is a schematic structural diagram of an air guide according to the present invention;

FIG. 6 is a schematic structural diagram of the alternating moisture absorption and desorption system of the present invention;

7 is a schematic diagram of the internal structure of the first and second adsorption beds of the present invention;

8 is a schematic structural diagram of the first and second electric flow channel exchangers of the present invention;

9 is a rear view of the forced liquid cooling system of the present invention;

10 is a schematic diagram of the internal structure of the forced liquid cooling system of the present invention;

FIG. 11 is a schematic diagram of the structure of the semiconductor heat dissipation unit of the present invention.

In the figure: 1-solar heating system, 1-1-first heating system, 1-2-second heating system, 101-vacuum collector tube, 102-collection cavity, 103-fixed tube, 104-fixed bracket , 105-flange, 106-heat storage kit, 107-copper tube, 108-sleeve, 109-T-shaped rib, 110-straight plate fin, 111-outer cavity, 112-inner cavity, 113-inner cavity Threaded hole, 114-Vacuum tube connection hole, 2-Drying system, 201-Drying box, 202-Material rack, 203-Material tray, 204-Air guide, 205-Wet air outlet, 206-Glass cover plate, 207-Sink Water tank, 208-fresh water collection bottle, 209-rectification grid, 210-air inlet air conditioner, 211-air inlet pipe, 3-alternating moisture absorption and desorption system, 3-1-first adsorption bed, 3-2-first Two adsorption beds, 3-3-first electric flow channel exchanger, 3-4-second electric flow channel exchanger, 301-expanded rectifier cavity, 302-reaction generation cavity, 303-exit confluence cavity, 304- Sine wave adsorption plate, 305-electric rotor, 306-external stator, 307-DC flow channel, 308-cross flow channel, 4-forced liquid cooling system, 401-steam condensation tank, 402-filter, 403-water receiving tank , 404-fresh water collector, 405-dry cold air outlet, 406-first draft fan, 407-second draft fan, 408-convection cavity, 409-heat exchange tube bundle, 410-baffle fin, 411- Adapter compartment, 412-semiconductor cooling compartment, 413-circulating water tank, 414-check valve, 415-cooler, 416-semiconductor refrigeration sheet, 417-radiator, 418-high temperature hot air inlet, 419-air cooling unit inlet Air outlet, 5-power supply system.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in FIG. 1 , this embodiment provides a solar-based integrated circulating drying and water intake device, including a solar heating system 1 , a drying system 2 , an alternate moisture absorption and desorption system 3 , a forced liquid cooling system 4 and a power supply system 5 ,specific:

The solar heating system 1 is a vacuum tube solar heating system 1, which is composed of two subsystems, namely a first heating system 1-1 and a second heating system 1-2.

The second heating system 1-2 is connected to the drying system 2. In this embodiment, the first heating system 1-2 is formed by two vacuum tube solar collectors connected in series, and one is installed at the hot air outlet. Axial-flow induced draft fan, the second heating system 1-2 continuously provides hot air for the drying system 2. The air outlet of the first heating system 1-1 is connected to the air inlet of the desorption side of the alternating moisture absorption and desorption system 3. In this embodiment, the first heating system 1-1 is composed of three vacuum tube solar collectors connected in series. In addition, an axial-flow induced draft fan is also installed at the air outlet. The first heating system 1-1 can heat and desorb the moisture adsorbed on the desorption side of the alternate moisture absorption and desorption system 3, and send the desorbed hot and humid air into the air. Condensation and water extraction are performed in the forced liquid cooling system 4 .

In this embodiment, the main body of the vacuum tube solar collector is composed of seven vacuum collector tubes 101 , a confluence chamber 102 , a fixed bracket 104 , a fixed tube 103 , a flange 105 and an in-tube heat storage kit 106 .

The inner diameter of the vacuum heat collecting tube 101 is 58 mm and the length is 1.5 m. The vacuum heat collecting tube 101 has a built-in heat storage kit 106 with an outer diameter of 50 mm and a length of 1.4 m.

As shown in FIG. 2 , the heat storage kit 106 includes a copper tube 107 and a sleeve 108 arranged concentrically inside and outside. Six T-shaped fins 109 are evenly distributed on the outer wall of the sleeve 108 ; the sleeve 108 The inner side is provided with straight plate fins 110 . Specifically, during processing, a 10mm long thread is first machined out of one end of a copper pipe 107 with a length of 1.5m, an outer diameter of 22mm and a wall thickness of 2mm, and then the coaxial insertion length is 1.4m and the inner diameter is 38mm. Inside the copper sleeve 108, the copper tube 107 at the outlet of the upper end of the sleeve 108 protrudes by 10cm, and the lower end of the sleeve 108 is flush with the copper tube 107; the outer diameter of the sleeve 108 is 42mm, the inner diameter is 22mm, and the thickness is 2mm. The ring-shaped copper cover is sealed, and the contact part between the copper cover and the sleeve 108 or the copper tube 107 is welded by gas welding; after the welding is completed, a threaded hole with a diameter of 5mm is opened near the edge of the copper cover, and then it will be in a molten state. The low temperature phase change heat storage material is injected through the threaded hole; after the phase change material is injected, the sealing plug is used for sealing. The enhanced heat exchange fins on the outer side of the sleeve 108 and the inner side of the copper tube 107 can be positioned by gas welding or direct casting. The T-shaped rib 109 on the outer side wall of the sleeve 108 is 5cm longer than the sleeve 108, the upper end is flush with the sleeve 108, and the protruding part of the lower end is inserted into the positioning hole in the fixing tube 103; the inner side of the copper tube 107 is also provided with 6 straight plates Shaped fins 110, the enhanced heat transfer fins on both sides of the inner and outer sleeves are in one-to-one correspondence with equal arcs around the axis.

As shown in FIG. 3 , the confluence cavity 102 is cylindrical as a whole, and is divided into two layers, an inner and outer layer, both of which are made of aluminum alloy. The inner cavity 112 is open at one end and closed at the other end, and its half-section through the axis is U-shaped, and seven inner cavity threaded holes 113 are opened at equal intervals at the bottom of the side for connecting the copper pipe 107; the open end and the inner end face of the flange 105 Welded by TIG welding. Both ends of the outer cavity 111 are open, and are installed at the end face of the flange 105 coaxially with the inner cavity 112. Both ends and the end face of the flange 105 are welded by tungsten argon arc welding. Below the side of the outer cavity 111, facing the threaded hole of the inner cavity At 113, seven vacuum tube connection holes 114 with a diameter slightly larger than the outer diameter of the vacuum tube are opened and a sealing silicone gasket is installed.

When assembling the vacuum tube heat collector as a whole, first pass the threaded end of the seven heat storage kits 106 through the vacuum tube connection hole 114 of the outer cavity 111 and screw them into the inner cavity threaded hole 113; Then, insert the upper end of the vacuum tube into the vacuum tube connection hole 114 of the outer cavity 111 in turn, and then install the lower end of the vacuum heat collector tube 101 into the corresponding positioning hole of the fixed tube 103 . The diameter of the central circular hole of the flanges 105 on both sides is the same as the inner diameter of the inner cavity 112 .

The drying system 2 is a double-effect mixed drying system 2 . As shown in FIG. 4 , the drying system 2 includes a material tray 203 , a material rack 202 , an air guide 204 , a glass cover 206 , a sink 207 , a fresh water collection bottle 208 and a drying box 201 for carrying the above components.

In this embodiment, the side projection of the drying box 201 is a trapezoid, which is made of aluminum alloy, and the outer surface of the maintenance structure is tightly wrapped with polystyrene foam board with excellent thermal insulation performance. When installed and used, the shorter side of the drying box 201 faces toward South installation. The sun-facing surface of the upper end face of the box body is covered with a glass cover plate 206 with high light transmittance, and the lighting surface of the glass cover plate faces south. Inside the box, three layers of material trays 203 are installed on a special material rack 202 at equal intervals. Each layer of material trays 203 is punched and formed from a 1mm thick stainless steel plate at one time. Push-pull handles are installed on the sides of the trays facing the north side of the box. On the south side of the material rack 202, a sink 207 with a slight inclination is set to collect the droplets condensed at the glass cover 206; the outlet of the sink 207 is connected to a fresh water collection bottle 208 through a special thin tube, and drips into the sink The droplets in 207 will flow into the fresh water collection bottle 208 by gravity. The humid air outlet 205 is provided at the upper end position of the north side of the drying box 201 .

According to the appearance, shape and size distribution of the main drying materials, several dense ventilation holes are evenly arranged on the bottom plate of the material tray 203 . During the operation of the device, in order to prevent the drying object from blocking the ventilation holes and causing uneven drying, a number of protrusions can be uniformly pressed with a press molding machine around the ventilation holes.

As shown in FIG. 5 , the air guide 204 is mainly composed of a rectifying grid 209 , an air inlet diffuser 210 and an air inlet duct 211 , and is installed at the bottom of the drying box 201 , and the outlet of the rectifying grid 209 faces the material tray 203 . The air inlet air diffuser 210 is a gradually expanding hot air channel as a whole. In order to ensure that the hot air flows into the rectification grid 209 evenly, a number of air distribution guide fins are installed in the air diffuser cavity. The air inlet end at the bottom of the rectifying grid 209 is connected, and the inlet end of the air inlet air diffuser 210 is connected with the air outlet of the second heating system 1-2 in a detachable and sealed manner through an air inlet duct 211 .

As shown in FIG. 6 , the alternating moisture absorption and desorption system 3 includes a first adsorption bed 3-1, a second adsorption bed 3-2, a first electric flow channel exchanger 3-3, a second electric flow channel arranged side by side For exchangers 3-4, the inlet and outlet of the two adsorption beds are connected to the corresponding interface of the electric flow channel exchanger through the pipeline, and the interface is connected by a thread. The inlet ends of the first adsorption bed 3-1 and the second adsorption bed 3-2 pass through the first electric flow channel exchanger 3-3, the wet air outlet 205 and the air outlet of the first heating system 1-1 respectively. Connect in a continuously switchable communication port mode; the outlet ends of the first adsorption bed 3-1 and the second adsorption bed 3-2 pass through the second electric flow channel exchanger 3-4 and the forced liquid cooling system 4 respectively. The air inlet and the air inlet of the second heating system 1-2 are connected in a continuously switchable communication port manner.

As shown in FIG. 7 , the adsorption bed is composed of three parts: a gradually expanding rectification chamber 301 , a reaction generating chamber 302 and an outlet confluence chamber 303 . According to the structure and size of the cavity, a special multi-channel gradually expanding rectification grid is installed inside the gradually expanding rectifier cavity 301, and the grid is made of aluminum alloy material; the outlet end of the gradually expanding rectifier cavity 301 is connected to the inlet of the reaction generating chamber 302 , the reaction generation chamber 302 is equipped with a special sine wave type adsorption plate 304 in the transverse direction. The main component of the adsorption plate is sodium polyacrylate fiber, the fiber diameter is about 30 μm, and the water quality absorbed in about 15 seconds is 70-100% of its own quality. times, the limiting oxygen index (LOI) is 10, and it has good flame retardancy; the outlet end of the reaction generating chamber 302 is connected to the outlet confluence chamber 303, and its overall shape is a quadrangular pyramid, and the cavity maintenance structure material is preferably aluminum alloy.

As shown in FIG. 8 , the electric flow channel exchanger includes an electric rotor 305 and an outer stator 306 . The electric rotor 305 is cylindrical, and is provided with two direct-current flow channels 307 and two cross flow channels 308, and the diameters of the flow channels are the same. The centerlines of the two DC runners 307 are axially symmetrically distributed with respect to the rotor centerline, and the centerlines of the two intersecting runners 308 are centerline symmetrically distributed with respect to the rotor centerline. It is distributed in the form of equal radius and equal arc. One end of the rotor close to the adsorption bed is called the inner end face, and the other end is called the outer end face. There is a circular hole at the center of the outer end face where a flat key can be installed to connect the motor shaft. The electric rotor 305 is printed by a 3D printer, and its main material is a colloidal photosensitive resin composed of polymer materials. The overall shape of the outer stator 306 is a sleeve with a flange, and the flange and the sleeve are connected by threads. The inner and outer ends of the outer stator 306 are respectively provided with two threaded holes with the same diameter as the flow channel of the electric rotor 305 for connecting pipes. In the same way, a smooth airflow path between the rotor runner and the corresponding threaded hole can be precisely ensured. A circular hole is set at the center of the outer end face of the stator, and a roller bearing is embedded in the circular hole, and the inner diameter of the bearing is the same as the diameter of the central hole of the outer end face of the rotor.

As shown in FIG. 9 , the forced liquid cooling system 4 is a double-effect cooling type forced liquid cooling system 4, including a semiconductor cooling unit, a shell-and-tube air cooling unit, a cooling liquid circulation driving unit, a steam condensation unit, and a box.

As shown in FIG. 10 , the steam condensing unit is connected to the air outlet of the alternating moisture absorption and desorption system 3 , and the steam condensing unit includes a high-temperature hot air inlet 418 and a steam condensing bin 401 . There is a filter 402, a water receiving tank 403 is arranged below the filter 402, and a fresh water collector 404 is arranged below the water receiving tank 403; The dry cold air outlet 405 is respectively connected to the three-way valve of the outlet end of the first induced draft fan 406 and the inlet end of the second induced draft fan 407 through the electric three-way valve; the first induced draft fan The three-way valve at the outlet end of 406 is connected to the inlet end of the first heating system 1-1 through a pipeline, and the outlet of the second induced draft fan 407 is connected to the atmospheric environment.

In this embodiment, the high-temperature hot air inlet 418 is connected to the air outlet of the alternating moisture absorption and desorption system 3, the pipe is in a gradually expanding shape, the lower end is connected to the steam condensation chamber 401, and the outlet faces the heat exchange tube bundle 409, and the space between the pipe and the box body Fixed connection; the filter 402 is composed of five layers of flat ceramic membranes, which are installed in parallel in the slot set inside the box; the dry cold air outlet 405 is slightly higher than the filter 402, and a flat plate is installed at the outlet Type hydrophobic ceramic membrane; the water receiving tank 403 is located below the filter 402, the whole is in the shape of an inverted triangle, and the bottom is connected to the fresh water collector 404. The dry cold air outlet 405 is respectively connected to the three-way valve at the outlet end of the first induced draft fan 406 and the inlet end of the second induced draft fan 407 through an electric three-way valve; the three-way valve at the outlet end of the first induced draft fan 406 is connected through a pipeline. The inlet end of the first heating system 1-1; the outlet of the second induced draft fan 407 is connected to the atmospheric environment.

The shell-and-tube air-cooling unit includes a convection cavity 408, an air-cooling unit air inlet 419 is arranged on the upper side of the convection cavity 408, and a heat exchange tube bundle 409 and a vertically arranged baffle are arranged in the convection cavity 408. fins 410, the baffle fins 410 are provided with multiple pieces and are alternately connected to the top and bottom of the convection cavity 408; the heat exchange tube bundle 409 extends to the steam condensation unit; the convection cavity 408 has The other side above is provided with an air outlet of the air cooling unit, and the air outlet of the air cooling unit is connected to the inlet of the first induced draft fan 406 through a three-way valve.

In this embodiment, the air inlet of the air-cooling unit is in a gradually expanding shape and is arranged on the top of the convection cavity 408, and the air inlet is facing the leftmost side of the heat exchange tube bundle 409; The front and rear widths of the box body are the same, and the up and down width is slightly smaller than the height of the convection chamber 408. They are respectively installed up and down alternately in the card slots designated by the top and bottom positions of the convection chamber 408. There are three pieces at the top and two pieces at the bottom. Made of aluminum alloy material, the spacing between adjacent fins is about 10cm. After the fins are installed, place the box on the laser cutting table, and then use a laser cutting machine to move from left to right on the upper side of the left wall of the box. 11 sets of positioning holes are evenly opened, and the laser beam passes through the left side wall of the box, the baffle rib 410, the middle baffle in the box and the right wall of the box in turn, so as to form a neat positioning hole beam, and the diameter of the positioning holes is 17mm. ; The heat exchange tube bundle 409 is composed of 11 copper heat exchange tubes, the length of which is the same as the left and right length of the box body, and the wall thickness is 1mm; The hole is inserted through the positioning hole of the middle partition plate, and then the two ends of each copper tube 107 in the tube bundle are flush with the left and right walls of the box, and the joints of the end faces are welded and fixed and evenly coated with high temperature resistant waterproof material; the air outlet is located on the top right of the convection chamber 408 The side position is connected to the first induced draft fan 406 through a three-way valve.

The cooling liquid circulation driving unit includes a semiconductor cooling bin 412 and an adapter bin 411 respectively connected to both ends of the heat exchange tube bundle 409. The transfer bin 411 is connected to a circulating water tank 413, and the circulating water tank 413 is connected to the circulating water tank 413 through a circulating pump. The semiconductor cooling chamber 412 communicates.

In this embodiment, the adapter box 411 is set at the top of the left side wall of the box body, the installation holes on the right end face of the adapter box 411 completely cover the 11 positioning holes, and the joints are welded and fixed and waterproofed; the adapter box 411 The lower end has a hole and is detachably connected to the water inlet of the circulating water tank 413 through a pipe; the circulating water tank 413 is located at the lower left of the box, and the outlet is detachably connected to the axial inlet end of the circulating pump through a pipe, and the circulating pump is made of standard 304 stainless steel Centrifugal circulating pump, the model is 25WBS2-8, the power is 250W, the maximum lift is 10m, and it can be used in acid-base working environment; the radial outlet of the circulating pump is connected to the check valve 414, and then connected to the semiconductor cooling bin 412 The entrance below; the semiconductor cooling bin 412 is set at the top of the right side wall of the box body, the mounting hole on the left end face of the semiconductor cooling bin 412 completely covers the positioning hole, the connection is welded and fixed, and waterproof treatment; in order to adapt to the low temperature environment in winter, The circulating coolant used in this system can optionally be antifreeze.

As shown in FIG. 11 , the semiconductor cooling unit includes a cooler 415 , a semiconductor cooling sheet 416 and a radiator 417 , and the air outlet of the semiconductor cooling unit is connected to the first induced draft fan 406 through a pipe. In order to reduce the difficulty of processing and installation of the semiconductor cooling unit, in this embodiment, the cooler 415 and the radiator 417 are made of universal heat dissipation blocks of uniform specifications, which are made of 6063 aluminum, 150 mm long, 100 mm wide, 36 mm high, and have a tooth thickness of 0.8. mm, the tooth spacing is 2.93mm, and the bottom thickness is 2mm; the overall dimensions of the semiconductor cooling chip 416 are 130mm×80mm×3.6mm, the rated voltage is 12V, the maximum working current is 10A, and the maximum power is 120W; the overall dimensions of the induced air duct are 150mm×100mm×39mm, the wall thickness is 1.5mm, the material is aluminum alloy, and a laser cutting machine is used to open a mounting hole with a size of 130mm×80mm on the side; the air outlet is connected to a gradually expanding gas collection pipe, and the connection is welded by argon arc welding; During installation, evenly spread the thermal conductive silica gel on the contact surface of the cooler 415 and the radiator 417, and stick it on the cooling side and the heat dissipation side of the semiconductor refrigeration sheet 416 respectively. The teeth are installed in a front-to-rear direction, and then the thermally conductive silica gel is dried with hot air. After drying, extend the heat dissipation side of the bonded liquid cooling module into the installation hole of the air duct. When the tooth end face of the radiator 417 is fully fitted with the end face of the installation hole of the air duct, use an argon arc at the contact line. Welding and welding; after this process is installed, the cooling side is extended into the semiconductor cooling bin 412 on the left side wall of the box, and the contact surface is also welded by argon arc welding; considering that the flowing working medium in the semiconductor cooling bin 412 is liquid, therefore, In order to prevent leakage, apply a layer of waterproof glue to the welding place; in order to avoid the phenomenon of falling off due to the poor connection of each contact surface, after the installation of the semiconductor cooling unit is completed, a right-angle bracket is installed at the bottom, and the upper end of the bracket is connected to the heat sink. The units are in close contact, and the left end is fixed on the right side wall of the box.

The power supply system 5 is a photovoltaic power supply system 5, which supplies power to the entire device.

The solar energy-based integrated circulating drying water extraction method includes the following steps:

S1: The cold air is heated by the first heating system 1-1 and the second heating system 1-2;

S2: The high-temperature dry air flowing out of the second heating system 1-2 dries the material in the drying system 2 to generate moist air, most of the moist air is discharged through the moist air outlet 205, and a small part of the moist air is The inner surface of the top glass cover plate of the drying system 2 condenses into water droplets and flows into the fresh water collection bottle 208;

S3: The moist air discharged in step S2 flows into the moisture absorption side of the alternating moisture absorption and desorption system 3, dehumidifies the humid air through the alternating moisture absorption and desorption system 3, and the dehumidified air re-enters the second heating system 1-2 to complete the next time Drying and dehydration cycle;

S4: When the moisture absorption side of the alternating moisture absorption and desorption system 3 in step S3 reaches the water saturation state, the original moisture absorption side is quickly switched to the new desorption side, and the original desorption side is rapidly switched to the new moisture absorption side, realizing the continuity of the moisture absorption process and the desorption process. Fast switching and synchronous operation, and then the high-temperature dry air in the first heating system 1-1 enters the new desorption side of the alternate moisture absorption and desorption system 3, and dehumidifies and takes water from the new desorption side of the alternate moisture absorption and desorption system 3;

S5: The high-temperature humid air flow generated in step S4 flows into the forced liquid cooling system 4, and is condensed in the forced liquid cooling system 4 to form fresh water; the dry cold air after condensation and dehumidification enters the first heating system 1-2 again The air inlet starts the next cycle; when the air pressure in the first heating system 1-1 is too high, the excess dry cold air will be automatically discharged into the atmospheric environment.

specific:

The heating method of the solar heating system 1 with phase change heat storage is:

When the system is running, the normal temperature air first enters from the open end of the inner cavity 112, and then flows into the copper tube 107 in the heat storage kit 106 through the seven parallel threaded holes on the lower side of the inner cavity 112, and the low-temperature phase change heat storage material passes through the copper tube 107. The wall and its inner straight plate-type enhanced heat exchange fins preheat the incoming normal temperature air; the preheated air flows 180° at the bottom of the copper tube 107, and then flows out of the vacuum heat collector tube 101 along the outer side of the sleeve 108, During this process, the airflow directly sweeps the inner wall of the vacuum heat collector tube 101, and after absorbing a large amount of radiant heat, the temperature rises rapidly and exceeds the temperature of the phase change material layer, and then part of the heat is transferred through the wall of the sleeve 108 and the T-shaped fins 109. To the low temperature phase change heat storage material; the hot air flowing out from each vacuum heat collecting tube converges in the outer cavity 111 and flows into the next stage heat collector through the central hole of the flange 105 to heat up again. In order to reduce the heat loss of the hot air flow in the outer cavity 111 , a thermal insulation layer is provided on the outer surface of the outer cavity 111 . When the device operates at night, the low-temperature phase-change heat storage material in the heat storage package 106 begins to release heat to the outside, thereby providing operating energy for the system.

The drying method of the double-effect mixed drying system 2 is:

The convective drying in the drying system 2 is the first effect. The principle is: the high-temperature dry air flowing out from the second heating system 1-2 first enters the air inlet air diffuser 210 from the air inlet below the drying box 201, and then enters the air diffuser 210 in the air guide. Under the uniform flow effect of the device 204, it flows into the rectification grid 209 evenly, and the high-temperature dry air rectified by the rectification grid 209 evenly passes through the ventilation holes on the three-layer material tray 203 to directly convect the dry materials. The moisture contained in the dry material continuously penetrates the skin and mixes with the high-temperature air to form moist air, and finally flows out from the moist air outlet 205 above the back plate of the box. The second effect is radiative drying, where the sunlight directly dries the material through the glass cover plate 206 in a suffocating way, which further increases the temperature inside the drying box 201 and accelerates the evaporation rate of moisture inside the drying material. Most of the water vapor generated inside the box will be fully convectively mixed with the hot air to form moist air, which will flow out from the moist air outlet 205, and a small part of the water vapor will condense on the inner wall surface of the glass cover plate 206, and then under the action of gravity It rolls down to the sink 207 and finally flows into the fresh water collection bottle 208 .

The moisture absorption and desorption method of the alternating moisture absorption and desorption system 3 is:

In the initial stage of system startup, the air flow channel of the system is a direct flow channel 307; the humid air flowing out from the humid air outlet 205 of the drying box 201 first enters one of the adsorption beds (original adsorption bed) through the first electric flow channel exchanger 3-3, The moist air flows into the reaction generating chamber 302 evenly under the rectification effect of the gradually expanding rectifying cavity 301 ; since the cavity and the grid are both gradually expanding, the local loss generated is very small; when the moist air enters the reaction generating chamber 302 , under the action of the diversion and turbulence of the sine wave adsorption plate 304, the thermal boundary layer and the velocity boundary layer formed by the moist air flow on the surface of the adsorption plate 304 are destroyed, and the moist air and the surface of the adsorption plate 304 can be fully contacted , under the high-strength hygroscopic effect of sodium polyacrylate fiber, the moisture carried in the moist air will be fully absorbed by the adsorption plate 304, and this process can thoroughly dehumidify the moist air flowing out of the drying box; the dehumidified dry air will converge at the outlet Collected in the cavity 303, and then flows into the second heating system 1-2 through the second electric flow channel exchanger 3-4, and then starts the next drying-dehumidifying cycle. When the adsorption plate 304 reaches the saturated state of water absorption, the electric flow channel exchanger automatically switches the airflow channel to the cross channel 308, that is, the original adsorption side is switched to the new desorption side, and the other adsorption bed is switched to the new adsorption side. The high-temperature dry air from the first heating system 1-2 flows into the new desorption side adsorption bed through the first electric flow channel exchanger 3-3, because the first heating system 1-1 is compared with the second heating system 1- 2 There is one more collector, so the temperature of the hot air output by the first heating system 1-1 is higher than the temperature of the humid air output by the drying system 2; The adsorbed moisture is quickly evaporated, and then mixed with dry air to form a humid air flow; the humid air with higher temperature flows into the forced liquid cooling system 4 through the second electric flow channel exchanger 3-4 at the outlet end. After that, the adsorption process and the desorption process are carried out synchronously. When the adsorption side reaches the saturated state of water absorption, the original adsorption side is automatically switched to the new desorption side, and the original desorption side is switched to the new adsorption side at the same time.

The condensation method of the double-effect cooling type forced liquid cooling system 4 is:

When the device is running, the circulating pump drives the coolant to start circulating. The high-temperature humid air flowing out from the desorption side of the alternating moisture absorption and desorption system first flows into the steam condensation chamber 401 through the high-temperature humid air inlet pipe above the box, and then conducts convective heat exchange with the circulating cooling liquid in the heat exchange tube bundle 409 through the pipe wall, and then The water vapor in the airflow is condensed and formed into droplets; the droplets drip into the filter 402 under the action of gravity, and the filter 402 can effectively intercept trace impurities and fine particles in the airflow; the pure water filtered by the filter 402 flows into the water receiving tank 403, and finally enter the fresh water collector 404. The dry cold air after condensation and dehumidification flows into the three-way valve at the outlet of the first induced draft fan 406 through the outlet, and then flows into the air inlet of the first heating system 1-1, and starts the next cycle; the dry cold air outlet 405 The flat-plate hydrophobic ceramic membrane can block the leakage of fine droplets, and only air and a small amount of water vapor can pass through, which further improves the water production efficiency of the system; when the wind pressure in the first heating system 1-1 is too high, the excess drying The cold air will be discharged into the atmospheric environment through the second induced draft fan 407 under the control of the electric three-way valve.

After the semiconductor refrigerating sheet 416 is connected to the DC power, the semiconductor refrigerating sheet 416 absorbs the heat in the circulating cooling liquid through the cooler 415 on its left side, and then performs the first effect cooling on the cooling liquid; Under the action, the normal temperature air in the atmospheric environment flows into the cooling side air duct and the air-cooling unit air inlet above the box respectively. In the air duct, the cold air exchanges heat with the forced heat exchange fins and the tube wall in the radiator , and then take away the heat production of the refrigerating fins; after the cold air enters the convection cavity 408, under the action of the baffle fins 410, convection heat exchange occurs with the cooling liquid in the heat exchange tube bundle 409, thereby realizing the second effect cooling, and then with The air flowing out of the semiconductor cooling unit is confluent, and finally flows into the air inlet of the first heating system 1-1.

Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (10)

1. An integrated circulating drying water intake device based on solar energy, characterized in that, comprising a solar heating system, a drying system, an alternate moisture absorption and desorption system, a forced liquid cooling system and a power supply system, specifically: The solar heating system, the drying system and the hygroscopic side of the alternating moisture absorption and desorption system are sequentially connected to form a drying loop; The solar heating system is also connected with the desorption side of the alternating moisture absorption and desorption system and the forced liquid cooling system in sequence to form a water intake loop; The power supply system powers the device. 2. The solar-based integrated circulating drying and water-taking device according to claim 1, wherein the solar heating system comprises a first heating system and a second heating system, and the second heating system outputs The tuyere is connected with the air inlet of the drying system to continuously provide hot air for the drying system; the air outlet of the first heating system is connected with the desorption side inlet of the alternating moisture absorption and desorption system, used for the alternating Moisture absorption and desorption system desorption side dehumidification and desorption; The moisture absorption side of the alternating moisture absorption and desorption system is connected to the second heating system and the drying system, and is used for dehumidifying the humid air discharged from the drying system and delivering the dehumidified air to the air inlet of the second heating system; The desorption side of the alternating moisture absorption and desorption system is also connected to the first heat supply system, and the first heat supply system is used to dehumidify and desorb the desorption side of the alternating moisture absorption and desorption system; The inlet of the forced liquid cooling system is connected to the outlet of the desorption side of the alternating moisture absorption and desorption system, and the air inlet of the first heating system is connected to the outlet of the forced liquid cooling system, and the forced liquid cooling system is used for cooling high-temperature humid air, to form fresh water, and deliver the condensed and dehydrated dry cold air to the air inlet of the first heating system. 3 . The solar-based integrated circulating drying water intake device according to claim 2 , wherein the first heating system and the second heating system are both composed of vacuum tube type solar collectors, and the vacuum tube type The solar heat collector includes a vacuum heat collecting tube, a heat storage kit is arranged in the vacuum heat collecting tube, the upper part of the vacuum heat collecting tube is communicated with the confluence cavity, and also includes a fixing tube and a fixing bracket for fixing; The number of evacuated tube solar heat collectors in the first heating system is greater than the number of evacuated tube solar heat collectors in the second heating system. 4. The solar energy-based integrated circulating drying water intake device according to claim 2, wherein the drying system comprises a drying box and a material rack, and a material tray mounted on the material rack is arranged in the drying box; The upper end face of the drying box is inclined, and the upper end face of the drying box is provided with a glass cover plate, and a water sink is arranged under the lower side of the glass cover plate, and the outlet of the water sink is connected to a fresh water collection bottle ; The drying box is located below the higher side of the glass cover plate and is provided with a humid air outlet, and the humid air outlet communicates with the moisture absorption side of the alternating moisture absorption and desorption system. 5 . The solar-based integrated circulating drying and water-taking device according to claim 4 , wherein an air guide is arranged below the material rack, and the air guide is connected to the air outlet of the second heating system. 6 . connect. 6 . The solar-based integrated circulating drying and water-taking device according to claim 2 , wherein the alternating moisture absorption and desorption system comprises a first adsorption bed, a second adsorption bed, a first electric flow channel exchanger and a second adsorption bed. 7 . Two electric flow channel exchangers, the inlet ends of the first adsorption bed and the second adsorption bed are respectively connected to the wet air outlet and the air outlet of the first heating system through the first electric flow channel exchanger; The outlet ends of the adsorption bed and the second adsorption bed are respectively connected with the air inlet of the forced liquid cooling system and the air inlet of the second heating system through the second electric flow channel exchanger. 7 . The solar-based integrated circulating drying and water intake device according to claim 2 , wherein the forced liquid cooling system comprises a steam condensing unit, a shell-and-tube air cooling unit, a cooling liquid circulating driving unit and a semiconductor cooling unit 7 . . 8 . The solar-based integrated circulating drying water intake device according to claim 7 , wherein the air inlet of the steam condensing unit is connected to the air outlet on the desorption side of the alternating moisture absorption and desorption system, and the steam condensing unit outlet. 9 . The tuyere is also connected with the air inlet of the first heating system; Alternatively, the shell-and-tube air-cooled heat dissipation unit includes a convection cavity, and the convection cavity is provided with a heat exchange tube bundle and vertically arranged baffle fins; the heat exchange tube bundle extends to the steam condensation unit; the The other side above the convection cavity is provided with an air-cooling unit air outlet, and the air-cooling unit air outlet is connected to the first induced draft fan through a three-way valve; Alternatively, the cooling liquid circulation driving unit includes a semiconductor cooling bin and a transfer bin respectively communicating with both ends of the heat exchange tube bundle, the transfer bin is connected to a circulating water tank, and the circulating water tank is cooled with the semiconductor through a circulating pump warehouse connection; Alternatively, the semiconductor cooling unit includes a cooler, a semiconductor cooling sheet and a radiator connected in sequence, and an air outlet of the semiconductor cooling unit is connected to the first induced draft fan through a pipe. 9. A solar energy-based integrated cycle drying water intake method, characterized in that, using the solar energy-based integrated cycle drying water intake device according to any one of claims 2-8, specifically, comprising the following steps: S1: The cold air is heated by the first heating system and the second heating system; S2: The high-temperature dry air flowing out of the second heating system dries the material in the drying system to generate moist air, most of the moist air is discharged through the moist air outlet, and a small part of the moist air is in the top glass of the drying system. The inner surface of the cover plate condenses into water droplets and flows into the fresh water collection bottle; S3: the moist air discharged in step S2 flows into the moisture absorption side of the alternating moisture absorption and desorption system, dehumidifies the humid air through the alternating moisture absorption and desorption system, and the dehumidified gas re-enters the second heating system to complete the next drying and dehydration cycle; S4: When the moisture absorption side of the alternating moisture absorption and desorption system in step S3 reaches the water absorption saturation state, the original moisture absorption side is quickly switched to the new desorption side, and the original desorption side is rapidly switched to the new moisture absorption side, realizing the continuous and rapid moisture absorption process and desorption process. Switching and synchronous operation, the high-temperature dry air in the first heating system enters the new desorption side of the alternating moisture absorption and desorption system, and dehumidifies and takes water from the new desorption side of the alternating moisture absorption and desorption system; S5: The humid air with higher temperature generated in step S4 flows into the forced liquid cooling system, and is condensed in the forced liquid cooling system to form fresh water; the dry cold air after condensation and dehumidification enters the air inlet of the first heating system again to start the next cycle ; When the wind pressure in the first heating system is too high, the excess dry cold air will be automatically discharged into the atmosphere. 10 . The solar-based integrated circulation drying and water extraction method according to claim 9 , wherein the first heating system and the second heating system are both composed of vacuum tube solar heat collectors, and the first heating system The number of evacuated tube solar thermal collectors in one heating system is greater than the number of evacuated tube solar thermal collectors in the second heating system.

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