CN114396666A - Solar-driven indoor humidity control device - Google Patents

Abstract

The invention provides a solar-powered indoor humidity control device, the core component of which is an adsorption and dehumidification material, which is composed of a liquid adsorbent and a capillary matrix material, and is divided into two parts: a desorption surface and an adsorption surface. Among them, the desorption surface is driven by solar energy, heated up, desorbs water vapor into the outdoor air, the concentration of the liquid adsorbent inside increases, and a concentration gradient of the liquid adsorbent is formed inside the adsorption and dehumidification material. At the same time, under the action of concentration gradient and capillary force, the moisture inside the adsorption and dehumidification material will move to the desorption surface macroscopically, so that the relatively low temperature adsorption surface will continuously absorb moisture into the room, so as to realize the continuous dehumidification of indoor air. By using the humidity control device and method provided by the present invention, the solar energy can be directly utilized to drive the device to work, and the relative humidity of the environment can be reduced so that the relative humidity of the environment is lower than 50%.

Description

Solar powered indoor humidity control

technical field

The present invention relates to the technical field of indoor air humidity control, in particular to a solar-powered indoor humidity control device.

Background technique

Humidity is an important indicator to measure indoor thermal comfort. High humidity not only affects human comfort, but also affects air quality and increases the risk of disease. In cities, people spend more than 80% of the time indoors every day, and long-term exposure to high humidity environments poses a non-negligible threat to human health. The development of humidity control technology is very necessary. However, under the extensive demand for dehumidification, the current mainstream humidity control technologies are energy-intensive, accounting for about 8% of the global annual total energy consumption.

In the traditional humidity control technology, it is necessary to input electrical or mechanical energy. For compressed vapor condensation and dehumidification, after the air is condensed below the dew point, it needs to be heated to make it warm again, which wastes energy; for absorption-based dehumidification air conditioners, after using desiccant to dehumidify, electric energy is needed to assist in drying and regeneration, and there are The desorption temperature is high and the system is complex. And low-carbon emission reduction has become a link that cannot be ignored in today's technological development. Therefore, a zero-emission, zero-energy humidity control technology is of great significance for the development of humidity control technology.

Patent document CN214370627U designs a semiconductor dehumidifier, which uses the Peltier effect of semiconductors to condense the inlet wet air at the cold end of the semiconductor, and uses air guides and guides to make the dehumidified dry and cold air enter the semiconductor hot end to warm up . The structure of the device is simple, but the device needs to be driven by electric energy, the energy loss is large, and the energy utilization rate is poor.

Patent document CN205156582U designs a dehumidification device based on adsorption wheel technology, which uses adsorbent materials to capture water vapor in the environment, and at the same time, regenerates the adsorbent by electric heating, and uses the wheel to make the dehumidification process continue. The device has high energy utilization rate and low cost, but the structure is still relatively complex, and the regeneration process of the adsorbent still requires electric energy input.

A solar-powered control device and a control device are disclosed in the patent document with the publication number of CN105091173A. The invented control device includes a solar collector, a hot water collector, a hot water collector, a remote bed, a remote collector The solar cooling device, the solar thermal device transports the blood to the blood tank; the blood tank will transport the blood channel; the connection forms at least one water vapor discharge and collection port and one collection water port; the cooling device percolates the bed through the pipe; collects the water The invention of the present invention benefits from the equipment of the solar energy through the pipeline access, through the healthy equipment, can be transported to the network through the blood collection box, can be transmitted to the seabed by means of cooling, and can be carried out remotely, the equipment is controlled, through the The control of the network, the water collection device can be controlled by the system, and the water collection device can be transmitted to the network through the adsorption of the battery.

Therefore, a new technical solution needs to be proposed.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the purpose of the present invention is to provide a solar-powered indoor humidity control device.

A solar-powered indoor humidity control device provided according to the present invention comprises an adsorption dehumidification material and a dehumidification separator;

The adsorption and dehumidification material includes a desorption surface and an adsorption surface, the device is divided into an indoor environment part and an outdoor environment part, the indoor environment part and the outdoor environment part are separated by a wall and a dehumidification partition, and the desorption surface is located in the outdoor environment. One side of the part, the adsorption surface is located on one side of the indoor environment part, the dehumidification partition is arranged in the wall separating the indoor environment part and the outdoor environment part, and the adsorption surface passes through the gap of the dehumidification partition and is connected to the wall. The dehumidification separator fits tightly.

Preferably, the adsorption and dehumidification material is composed of a liquid hygroscopic agent and a capillary matrix material, the liquid hygroscopic material absorbs water vapor in the air, and transports moisture to the outside in a directional manner through the dispersion mechanism of the liquid hygroscopic material; the capillary matrix material Taking advantage of the porous nature, a liquid matrix accumulates inside the material.

Preferably, the adsorption surface absorbs moisture in the indoor air, and the desorption surface releases the internal moisture to the outdoor air.

Preferably, the desorption surface adopts a capillary matrix material, which converts the solar energy on the surface of the desorption surface into thermal energy, the temperature of the desorption surface heats up, the internal liquid adsorbent is desorbed, and water vapor is released.

Preferably, the adsorption surface adopts capillary matrix material, and the area of the adsorption surface is larger than that of the desorption surface.

Preferably, the dehumidifying separator is made of materials without through-holes or directly taken from the wall; the adsorption surface part passes through the dehumidifying separator and is connected to the desorption surface to construct a two-dimensional channel for internal liquid matrix exchange. The adsorption surface and the dehumidification separator are closely attached.

Preferably, the desorption surface is heated by light and heat, the internal liquid adsorbent is desorbed, and moisture is released to the outdoor air; the temperature of the adsorption surface is lower than that of the desorption surface, and the water molecules in the indoor air are adsorbed.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention can be completely driven by solar energy when it works without power input;

2. The core part of the present invention is a solution material with humidity control ability, which is composed of a liquid adsorbent with excellent adsorption performance and a capillary matrix material, with simple structure and good material economy;

3. The present invention adopts a modular structure, and each part of the device can be manufactured and assembled separately, which is convenient for commercialization.

Description of drawings

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

1 is a schematic structural diagram of a solar-powered continuous adsorption dehumidification device provided by a specific embodiment of the present invention;

2 is a three view of a support plate of a solar-powered continuous adsorption dehumidification device provided by a specific embodiment of the present invention;

3 is a side view of the solar-driven continuous adsorption dehumidification device provided by a specific embodiment of the present invention when it is installed on a wall;

4 is a specific side view of the solar-powered continuous adsorption dehumidification device provided by the present invention;

FIG. 5 is a graph showing the variation of indoor temperature and humidity with time under the preset environment test of the solar-powered continuous adsorption dehumidification device of the present invention.

in:

Desorption surface 1 Insulation material 5

Adsorption surface 2 Horizontal frame 6

Dehumidification partition 3 Wall 7

side panel 4

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.

Based on the deficiencies in the prior art, the present invention provides a solar-powered indoor humidity control device, comprising: an adsorption dehumidification material and a dehumidification separator 3 . The adsorption and dehumidification material is composed of liquid hygroscopic agent and capillary matrix material. Among them, the liquid hygroscopic material is designed to absorb water vapor in the air, and at the same time, through the dispersion mechanism of the liquid hygroscopic material, the water is transported to the outdoor; Under the capillary force of the matrix material, the rapid transport of the liquid adsorbent from the water absorption side to the water loss side is realized.

At the same time, the adsorption and dehumidification materials can be divided into desorption surface 1 and adsorption surface 2 according to their functions. Among them, the adsorption surface 2 absorbs the moisture in the indoor air, and the desorption surface 1 releases its internal moisture to the outdoor air. The desorption surface 1 uses a capillary matrix material with photothermal properties, which aims to convert the solar energy on the surface of the desorption surface 1 into thermal energy, the desorption surface 1 heats up, the internal liquid adsorbent is desorbed, and water vapor is released, and at the same time, the liquid adsorption in the desorption surface 1 is improved. concentration of the agent. The adsorption surface 2 adopts capillary matrix material with low thermal conductivity, which aims to reduce the heat transferred from the desorption surface 1 to the adsorption surface 2, increase the temperature gradient inside the adsorption surface 2, and improve the adsorption rate of the adsorption surface 2. The area of the adsorption surface 2 is larger than that of the desorption surface 1, which aims to balance the release rate of the desorption surface 1 and the moisture absorption rate of the adsorption surface 2, so as to ensure the steady and continuous operation of the device.

The dehumidifying baffle 3 is made of materials without through holes or directly from the wall body 7, which aims to block the direct exchange of indoor and outdoor air, and at the same time, reduce the heat exchange between indoor and outdoor air. The adsorption surface 2 needs to partially pass through the aforementioned dehumidifying separator 3 and connect with the desorption surface 1, thereby constructing a two-dimensional channel for the exchange of the internal liquid matrix. Among them, the adsorption surface 2 and the dehumidification separator 3 are closely attached to prevent the backflow of outdoor high-temperature water vapor into the room, so that the moisture in the indoor air is directionally transported to the outdoor through the solar-driven indoor humidity control device. Among them, if the adsorption surface 2 is made of flexible materials, the structure of the dehumidification partition 3 can be modified, for example, a support frame for the adsorption surface 2 is built to maintain the configuration of the adsorption surface 2 so that it can fully contact the indoor air. , to keep the adsorption surface 2 working at a higher adsorption rate in this configuration.

1 and 2, according to an embodiment of the present invention, a solar-powered continuous adsorption and dehumidification device includes: a desorption surface 1, an adsorption surface 2, a dehumidification separator 3, a side plate 4, a thermal insulation material 5, Horizontal frame 6 and so on.

In the embodiment of the present invention, the indoor environment part and the outdoor environment part are separated by the wall 7 and the dehumidification partition 3 . Among them, the desorption surface 1 is located on the side of the outdoor environment part. Under the action of light and heat, the temperature rises, the internal liquid adsorbent is desorbed, and moisture is released to the outdoor air; the adsorption surface 2 is located on the side of the indoor environment part, and its temperature is lower than the desorption surface. Surface 1, adsorbs water molecules in indoor air, thereby reducing indoor humidity.

In this embodiment, the desorption surface 1 and the adsorption surface 2 are made of a composite hygroscopic material composed of an activated carbon fiber felt material filled with an aqueous lithium chloride solution. Among them, the lithium chloride aqueous solution is designed to absorb water, or desorb water to the environment; the activated carbon fiber felt material is designed to carry the liquid adsorbent, and directionally transport the lithium chloride solution through capillary action, and the preparation method includes the following steps:

Step S1: put the activated carbon fiber felt material with a thickness of 3 mm into an oven at 120 ° C, dry for 4 hours, so that the water vapor or other impurities in it are fully separated from the matrix pores, and the activated carbon fiber felt material is sealed and cooled to room temperature.

Step S2: in an environment of 20° C., put the activated carbon fiber felt in step S1 into a lithium chloride aqueous solution with a mass fraction of 25%, and immerse it for 3 hours.

Step S3: Take out the activated carbon fiber felt in Step S2, remove the excess solution on the surface, and place it for later use.

In this embodiment, activated carbon fiber felt is selected for the adsorption and dehumidification material matrix of the desorption surface 1 and the adsorption surface 2, while in other embodiments of the present invention, the adsorption and dehumidification material matrix used for the desorption surface 1 and the adsorption surface 2 can be selected from different capillary Matrix material, but it is necessary to build a two-dimensional channel between the two sides, so that the liquid adsorbent can be transported between the two sides.

Referring to FIG. 2 , in the embodiment of the present invention, the aforementioned components such as the dehumidification partition 3 , the side plate 4 , and the horizontal frame 6 are made of acrylic plastic. One end of the side plate 4 is fixedly connected to the adsorption plate, and the other end of the same side plate 4 is fixedly connected to the horizontal frame 6 .

Referring to FIG. 3, the aforementioned adsorption surface 2 passes through the gap of the dehumidification separator 3, and forms a two-dimensional channel for liquid adsorbent transportation with the desorption surface 1. At the same time, the adsorption surface 2 is closely attached to the dehumidification separator 3, aiming at Prevent the outdoor high-temperature water vapor from flowing back into the room, so that the moisture in the indoor air is directionally transported to the outdoor through the adsorption surface 2.

Insulating foam is attached between the desorption surface 1 and the dehumidification partition 3 in the embodiment of the present invention to increase the thermal resistance between the desorption surface 1 and the adsorption surface 2 and reduce the heat transfer from the outdoor to the indoor side.

In the embodiment of the present invention, the preset temperature range of the environment is 23°C to 25°C, the humidity is 70%, and under 0.5 sunlight, the mass change rate of the desorption surface 1 and the adsorption surface 2 is about 6:1. Therefore, in this embodiment, the ratio of the area of the desorption surface 1 to the adsorption surface 2 is 1:6, so that the total desorption rate of the desorption surface 1 and the total adsorption rate of the adsorption surface 2 are approximately the same.

Referring to FIG. 3 , when the embodiment of the present invention is installed on the wall 7 , the dehumidifying clapboard 3 needs to be installed in the wall 7 , and the gap between the dehumidifying clapboard 3 and the wall 7 needs to be sealed with a sealant.

At the same time, this embodiment builds a test bench to verify the dehumidification performance of the device, uses an acrylic box to simulate a house, uses a searchlight to simulate a solar light source, controls the temperature and humidity of the outdoor environment, and collects the temperature and humidity of the indoor environment when the embodiment is working. Real-time data on humidity. The experimental results are shown in Figure 4. Under the simulated 0.55 sunlight, the temperature of the indoor environment can be maintained at 26 °C, the humidity of the indoor environment can be reduced from 64.2% to 45.6%, and the dehumidification rate can reach 12.35g m -2 h-1.

The specific working process of the embodiment of the present invention is as follows:

When the light source is irradiated on the desorption surface 1, the temperature of the desorption surface 1 increases, and the lithium chloride aqueous solution inside is desorbed, releasing moisture to the outdoor air, and making the solution concentration on the side of the outdoor environment part higher than that of the indoor environment part. Under the action of the aforementioned solution concentration gradient and the capillary force of the adsorption and dehumidification material matrix, the water molecules of the solution in the adsorption surface 2 move to one side of the outdoor environment, and the water content in the adsorption surface 2 decreases. At the same time, due to the high thermal resistance, the adsorption surface 2 and the desorption surface 1 have a large temperature gradient, the adsorption surface 2 has a lower temperature, and the internal lithium chloride aqueous solution cannot reach its saturated adsorption capacity, which will continue to absorb the air in the indoor environment. moisture, thereby dehumidifying the air in the indoor environment part.

In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (7)

1. A solar-driven indoor humidity control device is characterized by comprising an adsorption dehumidifying material and a dehumidifying partition plate (3);

the adsorption and dehumidification material comprises a desorption surface (1) and an adsorption surface (2), the device is divided into an indoor environment part and an outdoor environment part, the indoor environment part and the outdoor environment part are separated by a wall body and a dehumidification partition plate (3), the desorption surface (1) is positioned on one side of the outdoor environment part, the adsorption surface (2) is positioned on one side of the indoor environment part, the dehumidification partition plate (3) is arranged in the wall body for separating the indoor environment part and the outdoor environment part, and the adsorption surface (2) penetrates through a gap of the dehumidification partition plate (3) and is tightly attached to the dehumidification partition plate (3).

2. The solar-powered indoor humidity control device of claim 1, wherein the adsorption dehumidifying material is composed of a liquid moisture absorbent and a capillary matrix material, the liquid moisture absorbent adsorbs water vapor in the air, and the moisture is directionally transported to the outdoor through a dispersion mechanism of the liquid moisture absorbent; the capillary matrix material utilizes the porous property to accumulate a liquid matrix inside the material.

3. The solar-powered indoor humidity control apparatus of claim 1, wherein the adsorption surface (2) absorbs indoor air moisture and the desorption surface (1) releases internal moisture to outdoor air.

4. The solar-driven indoor humidity control device according to claim 1, wherein the desorption surface (1) adopts a capillary matrix material to convert solar energy on the surface of the desorption surface (1) into heat energy, the desorption surface (1) is heated, the internal liquid adsorbent is desorbed, and water vapor is released.

5. The solar-powered indoor humidity control apparatus according to claim 1, wherein the adsorption surface (2) is made of a capillary matrix material, and the area of the adsorption surface (2) is larger than that of the desorption surface (1).

6. The solar-driven indoor humidity control device according to claim 1, wherein the dehumidifying partition (3) is made of a material without through holes or directly made of a wall; the adsorption surface (2) partially penetrates through the dehumidification partition plate (3) and is connected with the desorption surface (1) to construct a two-dimensional channel for internal liquid matrix exchange, and the adsorption surface (2) is tightly attached to the dehumidification partition plate (3).

7. The solar-powered indoor humidity control apparatus according to claim 1, wherein the desorption surface (1) is heated under light and heat, and the desorption of the internal liquid adsorbent occurs to release moisture to the outdoor air; the temperature of the adsorption surface (2) is lower than that of the desorption surface (1) and water molecules in indoor air are adsorbed.

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