Solar PVT regenerative condensation and rotating wheel composite wide-humidity-threshold dehumidification system

Abstract

The invention relates to a solar PVT regeneration type condensation and rotating wheel composite wide-humidity-threshold dehumidification system which comprises a dehumidification system, a chilled water circulation system, a regeneration system and a solar PVT combined heat and power generation system. The system is composed of a direct-current air feeder, a front surface air cooler, a primary dehumidification rotating wheel, a middle surface air cooler, a secondary dehumidification rotating wheel, a rear surface air cooler, a direct-current water chilling unit, a direct-current exhaust fan, a front regeneration heater, a rear regeneration heater, a PVT array, a direct-current water pump, a heat storage water tank, an electric heater and an electrical storage device. Outdoor air sequentially passes through the front surface air cooler, the primary dehumidification rotating wheel, the middle surface air cooler, the secondary dehumidification rotating wheel and the rear surface air cooler, and the deep and wide-humidity-threshold dehumidification process of the system is achieved. And meanwhile, return air sequentially passes through the front regeneration heater, the second-stage dehumidification rotating wheel, the rear regeneration heater and the primary dehumidification rotating wheel, and the system regeneration process is achieved. A cold source of the system comes from a chilled water circulation system, and a heat source and electric energy come from a solar PVT combined heat and power generation system. Solar energy is fully utilized, and green and low-carbon effects are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of deep dehumidification, and in particular to a solar PVT regeneration type condensation and rotor composite wide humidity threshold dehumidification system. Technical Background

[0002] With the acceleration of industrialization, the booming development of industries with high humidity requirements such as medicine, food, glass, and lithium batteries has provided a broad market for the application of dehumidification systems, but it has also brought challenges to the system's deep and wide humidity threshold dehumidification capabilities. Rotary dehumidification, as a dehumidification technology that can treat air to below 10g / kg, has been widely used in the above-mentioned fields due to its superior dehumidification performance. However, in situations where humidity requirements are high, the high energy consumption problem exposed by rotary dehumidification air conditioners has become increasingly serious, seriously restricting its promotion and application in low-humidity industries (dew point temperature at -10°C). Therefore, green, efficient, and low-carbon deep and wide humidity threshold dehumidification technology paths urgently need to be explored. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to rely on the integrated solar photovoltaic and thermal technology, make full use of green, clean and renewable solar energy, and provide a stable, continuous, green and efficient deep and wide humidity threshold dehumidification treatment technology for the low-humidity industry.

[0004] To achieve the above objectives, the present invention provides a solar PVT regenerative condensation and rotor composite wide humidity threshold dehumidification system, which includes a dehumidification system, a chilled water circulation system, a regeneration system, and a solar PVT cogeneration system.

[0005] The dehumidification system is composed of a DC air supply fan 1, a front surface cooler 2, a primary dehumidification rotor 3, a middle surface cooler 4, a secondary dehumidification rotor 5, and a rear surface cooler 6. The outlet of the DC air supply fan 1 is connected to the front surface cooler 2, the primary dehumidification rotor 3, the middle surface cooler 4, the secondary dehumidification rotor 5, and the rear surface cooler 6 in sequence through an air duct.

[0006] In the dehumidification system, the air and chilled water flow through the front surface cooler, middle surface cooler, and rear surface cooler in the same direction;

[0007] The adsorbents in the primary dehumidification wheel and the secondary dehumidification wheel include calcium chloride, lithium chloride, molecular sieve, activated carbon, silica gel, and silica gel / halogen salt composite materials;

[0008] The carrier materials in the primary dehumidification wheel and the secondary dehumidification wheel include glass fiber, ceramic fiber, and asbestos fiber;

[0009] The flow channel types in the primary dehumidification wheel and the secondary dehumidification wheel include hexagonal, triangular, square, sinusoidal, and honeycomb.

[0010] The chilled water circulation system is composed of a direct current chiller 7, a front surface cooler 2, a middle surface cooler 4, and a rear surface cooler 6. The outlet of the direct current chiller 7 is connected to the front surface cooler 2, the middle surface cooler 4, and the rear surface cooler 6 in sequence, and then connected to the inlet of the direct current chiller 7 to form a loop.

[0011] The chilled water circulation system is used to provide a cold source for the front surface cooler 2, the middle surface cooler 4, and the rear surface cooler 6, so as to achieve cooling and temperature reduction treatment of the air.

[0012] The regeneration system is composed of a DC exhaust fan 8, a front regeneration heater 9, a secondary dehumidification rotor 5, a rear regeneration heater 10, and a primary dehumidification rotor 3. The outlet of the DC exhaust fan 8 is connected to the front regeneration heater 9, the secondary dehumidification rotor 5, the rear regeneration heater 10, and the primary dehumidification rotor 3 in sequence through an air duct.

[0013] In the regeneration system, air and hot water flow through the front and rear regeneration heaters in opposite directions;

[0014] The front regeneration heater and the rear regeneration heater are finned coils.

[0015] The solar PVT cogeneration system includes a hot water circulation system and a power generation system, wherein the hot water circulation system is composed of a front regeneration heater 9, a rear regeneration heater 10, a PVT array 11, a DC water pump 12, a hot water storage tank 13, and an electric heater 14, and the outlet of the DC water pump 12 is connected to the PVT array 11, the front regeneration heater 9, the rear regeneration heater 10, and the hot water storage tank 13 in sequence, and then connected to the inlet of the DC water pump 12 to form a loop; the power generation system is composed of a PVT array 11 and a power storage device 15, and the PVT component circuit is connected in series with the power storage device;

[0016] The solar PVT cogeneration system is used to provide heat source for the front regeneration heater 9 and the rear regeneration heater 10 on the one hand, so as to achieve the regeneration of the adsorbent; on the other hand, it is used to provide electric energy for the DC blower 1, the primary dehumidification wheel 3, the secondary dehumidification wheel 5, the DC chiller 7, the DC exhaust fan 8, the DC water pump 12, and the electric heater 14;

[0017] The PVT array is composed of multiple PVT modules, which are combined in series or in parallel.

[0018] The PVT assembly consists of a glass cover plate, a photovoltaic cell sheet, a photovoltaic back plate, an aluminum blown heat collecting plate, and thermal insulation cotton from top to bottom.

[0019] The present invention uses green, clean and renewable solar energy as the heat source for the system regeneration process, and the regeneration cost is low;

[0020] The invention provides green and low-carbon power supply, high economic efficiency and low operating cost;

[0021] The present invention can realize the efficient utilization of the full band of solar radiation, and can simultaneously realize the dual functions of photovoltaic power generation and photothermal heat generation, effectively improving the comprehensive utilization efficiency of solar energy, and saving energy and being highly efficient;

[0022] The present invention couples condensation dehumidification and rotary dehumidification together, effectively reducing the regeneration temperature of the dehumidification rotary wheel and realizing a deep and wide humidity threshold air treatment process;

[0023] The system of the present invention has a simple structure, is easy to maintain and has a high energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the solar PVT regeneration condensation and rotor composite wide humidity threshold dehumidification system of the present invention;

[0025] Figure 2 It is a diagram of the air treatment process of the present invention on the psychrometric diagram;

[0026] Figure 3 It is a schematic diagram of the structure of the solar PVT component of the present invention.

[0027] Numbers in the figure: 1-DC air supply fan, 2-front surface cooler, 3-primary dehumidification wheel, 4-middle surface cooler, 5-secondary dehumidification wheel, 6-rear surface cooler, 7-DC chiller, 8-DC exhaust fan, 9-front regeneration heater, 10-rear regeneration heater, 11-PVT array, 12-DC water pump, 13-heat storage tank, 14-electric heater, 15-power storage device, 16-glass cover, 17-photovoltaic cell, 18-photovoltaic backboard, 19-aluminum inflatable collector, 20-heat exchange channel, 21-insulation cotton; A~F are all air state points. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, in this embodiment, a solar PVT regenerative condensation and rotor composite wide humidity threshold dehumidification system includes a dehumidification system, a chilled water circulation system, a regeneration system, and a solar PVT cogeneration system.

[0030] The dehumidification system is mainly composed of a DC air supply fan 1, a front surface cooler 2, a primary dehumidification rotor 3, a middle surface cooler 4, a secondary dehumidification rotor 5, and a rear surface cooler 6 connected through an air duct;

[0031] The chilled water circulation system is mainly composed of a direct current chiller 7, a front surface cooler 2, a middle surface cooler 4, and a rear surface cooler 6 connected via water pipes;

[0032] The regeneration system is mainly composed of a DC exhaust fan 8, a front regeneration heater 9, a secondary dehumidification rotor 5, a rear regeneration heater 10, and a primary dehumidification rotor 3 connected via an air duct;

[0033] The solar PVT cogeneration system includes a hot water circulation system and a power generation system, wherein the hot water circulation system is mainly composed of a front regeneration heater 9, a rear regeneration heater 10, a PVT array 11, a DC water pump 12, a hot water storage tank 13, and an electric heater 14 connected via a water pipeline; the power generation system is mainly composed of a PVT array 11 and a power storage device 15 connected via a circuit.

[0034] The solar PVT regeneration condensation and wheel composite wide humidity threshold dehumidification system includes a dehumidification process and a regeneration process, and the above processes can be carried out simultaneously and continuously. Figure 1 and 2 As shown, the working principle of the dehumidification process is as follows: the outdoor air is sent by the DC fan 1 to the front surface cooler 2 for condensation and dehumidification, then heated and dehumidified by the primary dehumidification wheel 3, cooled and lowered by the middle surface cooler 4, then heated and dehumidified by the secondary dehumidification wheel 5, and then cooled and lowered by the rear surface cooler 6 before being sent to the target area; the chilled water prepared by the DC chiller 7 flows through the front surface cooler 2, the middle surface cooler 4, and the rear surface cooler 6 in sequence, providing a cold source for the dehumidification system, thereby realizing the cooling and lowering of the air. The working principle of the regeneration process is as follows: the return air is drawn by the DC exhaust fan 8 to the front regeneration heater 9 for heating, and then absorbs moisture through the secondary dehumidification wheel 5 to complete the regeneration process of the adsorbent in the secondary dehumidification wheel 5, and then heats up through the rear regeneration heater 10, and then absorbs moisture through the primary dehumidification wheel 3 to complete the regeneration process of the adsorbent in the primary dehumidification wheel 3, and is finally discharged to the outdoors; the PVT array 11 prepares hot water by absorbing long-wave solar energy. When solar energy is sufficient, excess heat energy is stored in the hot water storage tank 13. When solar energy is insufficient, the electric heater 14 in the hot water storage tank 13 is turned on to supplement heat energy. The prepared hot water is pressurized by the DC water pump 12 and flows through the rear regeneration heater 10 and the front regeneration heater 9 in turn to provide a heat source for the regeneration system. In addition, the PVT array 11 generates direct current by absorbing short-wave solar energy, providing electrical energy for the DC fan 1, the primary dehumidification wheel 3, the secondary dehumidification wheel 5, the DC chiller 7, the DC exhaust fan 8, the DC water pump 12, and the electric heater 14, and the remaining electrical energy is stored in the storage device 15.

[0035] The schematic diagram of the solar PVT module structure is as follows Figure 3 As shown, from top to bottom it consists of a glass cover plate 16 , a photovoltaic cell sheet 17 , a photovoltaic back plate 18 , an aluminum blown heat collecting plate 19 , a heat exchange channel 20 , and a thermal insulation cotton 21 .

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system, characterized in that: The system includes a dehumidification system, a chilled water circulation system, a regeneration system, and a solar PVT cogeneration system; The dehumidification system is composed of a DC air supply fan (1), a front surface cooler (2), a primary dehumidification rotor (3), a middle surface cooler (4), a secondary dehumidification rotor (5), and a rear surface cooler (6); the outlet of the DC air supply fan (1) is sequentially connected to the front surface cooler (2), the primary dehumidification rotor (3), the middle surface cooler (4), the secondary dehumidification rotor (5), and the rear surface cooler (6) through an air duct; The chilled water circulation system is composed of a direct current chiller (7), the front surface cooler (2), the middle surface cooler (4), and the rear surface cooler (6); the outlet of the direct current chiller (7) is sequentially connected to the front surface cooler (2), the middle surface cooler (4), and the rear surface cooler (6), and then connected to the inlet of the direct current chiller (7), thereby forming a loop; The regeneration system is composed of a DC exhaust fan (8), a front regeneration heater (9), the secondary dehumidification rotor (5), a rear regeneration heater (10), and the primary dehumidification rotor (3); the outlet of the DC exhaust fan (8) is connected to the front regeneration heater (9), the secondary dehumidification rotor (5), the rear regeneration heater (10), and the primary dehumidification rotor (3) in sequence through an air duct; The solar PVT cogeneration system comprises a hot water circulation system and a power generation system, wherein the hot water circulation system is composed of the front regeneration heater (9), the rear regeneration heater (10), the PVT array (11), a DC water pump (12), a hot water storage tank (13), and an electric heater (14); the outlet of the DC water pump (12) is sequentially connected to the PVT array (11), the front regeneration heater (9), the rear regeneration heater (10), and the hot water storage tank (13), and then connected to the inlet of the DC water pump (12) to form a loop; the power generation system is composed of the PVT array (11) and a power storage device (15), and the PVT component circuit is connected in series with the power storage device.

2. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: In the dehumidification system, the air and the chilled water flow through the front surface cooler (2), the middle surface cooler (4), and the rear surface cooler (6) in the same direction.

3. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: The chilled water circulation system is used to provide a cold source for the front surface cooler (2), the middle surface cooler (4), and the rear surface cooler (6), thereby achieving cooling and temperature reduction treatment of the air.

4. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: In the regeneration system, the air and hot water flow through the front regeneration heater (9) and the rear regeneration heater (10) in opposite directions.

5. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: The solar PVT cogeneration system is used, on the one hand, to provide a heat source for the front regeneration heater (9) and the rear regeneration heater (10) to achieve regeneration of the adsorbent; and on the other hand, to provide electric energy for the DC air supply fan (1), the primary dehumidification wheel (3), the secondary dehumidification wheel (5), the DC chiller (7), the DC exhaust fan (8), the DC water pump (12), and the electric heater (14).

6. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: The adsorbents in the primary dehumidification wheel (3) and the secondary dehumidification wheel (5) include calcium chloride, lithium chloride, molecular sieve, activated carbon, silica gel, and silica gel / halogen salt composite materials.

7. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: The carrier materials in the primary dehumidification wheel (3) and the secondary dehumidification wheel (5) include glass fibers, ceramic fibers, and asbestos fibers.

8. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized by: The flow channel types in the primary dehumidification wheel (3) and the secondary dehumidification wheel (5) include hexagonal, triangular, square, sinusoidal, and honeycomb shapes.

9. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized by: The front regeneration heater (9) and the rear regeneration heater (10) are finned coils.

10. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 is characterized in that: The PVT array (11) is composed of a plurality of PVT components, and the combination form thereof is either series connection or parallel connection.

11. The solar PVT regenerative condensation and wheel composite wide humidity threshold dehumidification system according to claim 1 or 4, characterized in that: The PVT assembly is composed of a glass cover plate, a photovoltaic cell sheet, a photovoltaic back plate, an aluminum blown heat collecting plate, and thermal insulation cotton from top to bottom.

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