CN114322122B - Rotary dehumidifier, heat exchange system and control method - Google Patents
Rotary dehumidifier, heat exchange system and control method Download PDFInfo
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- CN114322122B CN114322122B CN202111572732.4A CN202111572732A CN114322122B CN 114322122 B CN114322122 B CN 114322122B CN 202111572732 A CN202111572732 A CN 202111572732A CN 114322122 B CN114322122 B CN 114322122B
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- dehumidification
- air
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- heat exchange
- heater
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007791 dehumidification Methods 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims abstract description 7
- 230000001276 controlling effect Effects 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000002250 absorbent Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Drying Of Gases (AREA)
Abstract
The invention discloses a rotary dehumidifier, a heat exchange system and a control method, wherein the rotary dehumidifier, the heat exchange system and the control method comprise the following steps: the dehumidification runner section sets up dehumidification runner in the dehumidification runner section, separate formation regeneration wind channel and dehumidification wind channel in the dehumidification runner section, its characterized in that, be equipped with the heater through pipeline intercommunication heat transfer host computer heat dissipation end or heat supply end in the regeneration wind channel, the heater heating flow is through the air of dehumidification runner. According to the invention, the heating coil communicated with the heat dissipation end of the four-pipe unit is arranged in the regeneration air duct of the rotary wheel dehumidification section, and the heat of the four-pipe unit is recovered to carry out dehumidification, so that the four-pipe unit is combined with the rotary wheel dehumidifier, the utilization efficiency of energy is effectively improved, the heat supply amount of the variable frequency water pump is adjusted in real time according to the temperature, the energy consumption is further saved, and the accurate temperature control is realized.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a rotary dehumidifier, a heat exchange system and a control method.
Background
The storehouse in the archive requires highly to indoor air temperature, humidity, and is extremely strict to the demand of air degree of depth dehumidification, and at air treatment's in-process, uses the form of runner dehumidification can be effectual carry out degree of depth dehumidification to the air. The main parts of the rotary dehumidifier are rotary wheels, the surfaces of the rotary wheels are coated with moisture absorbent, and the surfaces of the rotary wheels are provided with honeycomb-shaped porous channels, the water in the wet air flowing through the rotary wheels can be absorbed by slowly rotating the rotary wheels, and the rotary wheels after moisture absorption can be dried and blown by high-temperature drying airflow, so that the moisture absorbent can be dehydrated and regenerated. The process needs to additionally heat the regenerated air to effectively discharge the moisture in the air, and the part of the heated heat is generally heated in an electric heating mode, so that the energy consumption is higher.
Disclosure of Invention
The invention provides a rotary dehumidifier, a heat exchange system and a control method, aiming at solving the technical problem of low energy utilization efficiency of rotary dehumidification in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a rotary dehumidifier, which comprises: the dehumidification runner section sets up dehumidification runner in the dehumidification runner section, separate formation regeneration wind channel and dehumidification wind channel in the dehumidification runner section, be equipped with the heater through pipeline intercommunication heat transfer host computer heat dissipation end or heat supply end in the regeneration wind channel, the heater heating flow is through the air of dehumidification runner.
The invention also includes: and the electric heater is arranged in the regeneration air duct and is arranged between the dehumidification rotating wheel and the heater.
Preferably, the heater is a heat exchange coil.
Furthermore, one part of the dehumidification rotating wheel is positioned in the regeneration air duct, the other part of the dehumidification rotating wheel is positioned in the dehumidification air duct, and the air flow direction of the regeneration air duct is opposite to the air flow direction of the dehumidification air duct.
The invention also comprises a first temperature sensor for detecting the air temperature between the heater and the electric heater, and a second temperature sensor for detecting the air temperature between the electric heater and the dehumidifying rotary wheel.
The invention also comprises a heat exchange system which comprises the heat exchange main machine and the rotary dehumidifier.
Furthermore, a variable frequency water pump is arranged on a pipeline of the heat exchange host connected with the heater.
The heat exchange system comprises: the air treatment unit, the air treatment unit includes the dehumidification runner section sets up the surface cooling section of dehumidification wind channel air-out side of dehumidification runner section, the surface cooler in the surface cooling section passes through the pipeline intercommunication the confession cold junction of heat transfer host computer.
Preferably, the heat exchange main machine is a four-pipe heating recovery unit.
The invention also provides a control method of the heat exchange system, which comprises the following steps: and judging whether the air temperature detected by the first temperature sensor is equal to a preset temperature, if so, keeping the current control state, and if not, regulating the air temperature passing through the dehumidification rotating wheel by controlling the variable frequency water pump and the electric heater.
Controlling the variable frequency water pump and the electric heating to adjust the temperature of the air passing through the dehumidification rotating wheel specifically comprises the following steps: and judging whether the air temperature detected by the first temperature sensor is lower than a preset temperature or not, and the variable frequency water pump reaches the maximum opening, if so, starting the electric heater to regulate the air temperature, and if not, controlling the opening of the variable frequency water pump to regulate the air temperature.
Further, turning on the electric heater to adjust the air temperature includes the steps of: and judging whether the temperature detected by the second temperature sensor is equal to a preset temperature or not, if not, increasing the power of the electric heater, and if so, keeping the current power of the electric heater.
Further, controlling the opening degree of the variable frequency water pump to regulate the air temperature comprises the following steps: and judging whether the air temperature detected by the first temperature sensor is equal to a preset temperature, if so, keeping the opening degree of the variable-frequency water pump unchanged, and if not, reducing the opening degree of the variable-frequency water pump.
Compared with the prior art, the heating coil communicated with the heat dissipation end of the four-pipe unit is arranged in the regeneration air duct of the rotary wheel dehumidification section, and the heat of the four-pipe unit is recovered to carry out dehumidification, so that the four-pipe unit is combined with the rotary wheel dehumidifier, the utilization efficiency of energy is effectively improved, the heat supply quantity of the variable frequency water pump is adjusted in real time according to the temperature, the energy consumption is further saved, and the accurate temperature control is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
The main part of the existing rotary dehumidifier is a dehumidifying rotary wheel, the surface of the rotary wheel is coated with a moisture absorbent, and the surface of the rotary wheel is provided with a honeycomb porous channel. The process needs additional heating of the regeneration air to effectively discharge the moisture in the air.
As shown in fig. 1, the present invention provides a rotary dehumidifier, including: the dehumidification rotating wheel section is divided into an upper layer and a lower layer, the upper layer forms a regeneration air channel 22 for circulating heated air to dehydrate and regenerate the moisture absorbent of the dehumidification rotating wheel 8; the lower layer forms a dehumidification air duct 21 which communicates the fresh air inlet and the air supply inlet for the user. The first half of dehumidification runner 8 is located regeneration wind channel 22, the latter half is located dehumidification wind channel 21, be equipped with heater 6 between regeneration wind channel 22's regeneration air intake and the dehumidification runner 8, heater 6 connects the hot junction of heat transfer host computer 1 (can be the heat dissipation end, also can be for the heat supply end, specifically confirm according to the type of heat transfer host computer), an air for heating through dehumidification runner 8, when the air that the dehumidification runner needs to heat makes the hygroscopic agent dehydration regeneration, the heat heating heater of the condenser of heat transfer host computer can be utilized, the thermal utilization efficiency is improved.
In order to avoid the condition of insufficient heat of the condenser, an electric heater 7 is further arranged in the regeneration air duct, the electric heater 7 is arranged between the dehumidification rotating wheel 8 and the heater 6, and when the heat exchange temperature of the heater 6 is insufficient, the electric heater 7 is turned on again to assist in temperature rise.
The upper layer of the dehumidification rotating wheel section is provided with a regeneration air inlet and a regeneration air outlet, and the right side of the lower layer is provided with a fresh air return section 12 into which fresh air or return air can be introduced. The left side of lower floor is connected with surface cooling section 9 and air supply section 13, makes the air of supplying with the user pass through dehumidification wind channel 21 earlier, dehumidifies through dehumidification runner 8, passes through the cooling of surface cooling section again. And the air flow direction of the regeneration air duct 22 is opposite to the air flow direction of the dehumidification air duct 21, so that the dehumidification rotor 8 can normally rotate in one direction.
A first temperature sensor 10 is provided between the heater 6 and the electric heater 7 for detecting the temperature T1 of the air heated by the heater, and a second temperature sensor 11 is provided between the electric heater 7 and the upper half of the desiccant rotor 8 for detecting the air heated by the electric heater 7. Subsequent control is facilitated by the arrangement of the temperature sensor.
The heater 6 may in particular be a heating coil or other form of conduit.
The invention also provides a heat exchange system, which comprises a heat exchange host 1 and an air handling unit, wherein the air handling unit comprises the rotary dehumidifier, the right side of a dehumidification air duct 21 at the lower layer of the dehumidification rotary section is connected with a fresh air return section 12, the left side of the dehumidification air duct is communicated with a surface cooling section 9 and an air supply section 13, and functional sections such as a filtering section and the like can be arranged between the surface cooling section 9 and the air supply section 13. Namely, the fresh air return section, the dehumidification rotating wheel section, the surface cooling section, the filtering section and the air supply section are functional sections of the air handling unit.
The heat exchange host 1 may be a four-pipe heat recovery host, the heat dissipation end of which corresponding to the condenser is communicated with the cooling tower 5 through a pipeline, and is also communicated with the heater 6 through a pipeline, and the pipeline communicated with the heater 6 and the pipeline communicated with the cooling tower 5 are both provided with a variable frequency water pump 4 (the following control method is mainly to control the variable frequency water pump on the pipeline communicated with the heater), and the pipeline communicated with the heater 6 is also provided with a flowmeter 3, so that the flow of the pipeline can be checked. The controller of the heat exchange host machine can control the power of the variable frequency water pump and the electric heater according to the air temperature detected by the temperature sensor.
The evaporator, i.e. the cold supply end of the heat exchange main machine 1 is communicated with the surface cooler in the surface cooling section 9 through a pipeline to supply cold for the air handling unit.
As shown in fig. 2, the present invention further provides a method for controlling the heat exchange system, including the steps of: and judging whether the air temperature T1 detected by the first temperature sensor is equal to a preset temperature T or not, if so, keeping the control state, and if not, adjusting the air temperature passing through the dehumidifying rotating wheel by controlling the variable frequency water pump and the electric heater.
The method comprises the following steps of regulating the air temperature passing through the dehumidification rotating wheel by controlling a variable frequency water pump and an electric heater: firstly, judging whether the air temperature detected by the first temperature sensor is less than a preset temperature T or not, and the frequency conversion water pump reaches the maximum opening, if so, starting the electric heater to adjust the air temperature, and if not, controlling the opening of the frequency conversion water pump to adjust the air temperature.
Turning on the electric heater to regulate the air temperature specifically includes the steps of: and judging whether the air temperature T2 detected by the second temperature sensor is equal to a preset temperature T or not, if not, increasing the power of the electric heater, and if so, keeping the current power of the electric heater.
The method for controlling the opening degree of the variable frequency water pump to regulate the air temperature specifically comprises the following steps: and judging whether the air temperature T1 detected by the first temperature sensor is equal to a preset temperature or not, if so, keeping the opening degree of the variable-frequency water pump unchanged to keep the temperature at the preset temperature, and if not, reducing the opening degree of the variable-frequency water pump to avoid overhigh temperature.
The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. A heat exchange system, comprising: a heat exchange host and a rotary dehumidifier;
the rotary dehumidifier includes: dehumidification runner section sets up dehumidification runner in the dehumidification runner section, divide in the dehumidification runner section and form regeneration wind channel and dehumidification wind channel, be equipped with the heater through pipeline intercommunication heat transfer host computer heat dissipation end or heat supply end in the regeneration wind channel, set up electric heater in the regeneration wind channel, electric heater sets up dehumidification runner with between the heater, the heater heating stream flows through the air of dehumidification runner, a part of dehumidification runner is located in the regeneration wind channel, another part is located in the dehumidification wind channel, the air flow direction in regeneration wind channel with the air flow direction in dehumidification wind channel is opposite, the heat transfer host computer is connected be equipped with the frequency conversion water pump on the pipeline of heater.
2. The heat exchange system of claim 1, wherein the heater is a heat exchange coil.
3. The heat exchange system of claim 1, further comprising a first temperature sensor that detects a temperature of air between the heater and the electric heater, and a second temperature sensor that detects a temperature of air between the electric heater and the desiccant rotor.
4. The heat exchange system of claim 1, further comprising: the air treatment unit, the air treatment unit includes the dehumidification runner section sets up the surface cooling section of dehumidification wind channel air-out side of dehumidification runner section, the surface cooler in the surface cooling section passes through the pipeline intercommunication the confession cold junction of heat transfer host computer.
5. The heat exchange system of claim 1, wherein the heat exchange main unit is a four-pipe heat recovery main unit.
6. A method for controlling a heat exchange system according to any one of claims 1 to 5, comprising the steps of: and judging whether the air temperature detected by the first temperature sensor is equal to a preset temperature, if so, keeping the current control state, and if not, regulating the air temperature passing through the dehumidification rotating wheel by controlling the variable frequency water pump or the electric heater.
7. The method of claim 6, wherein the controlling the variable frequency water pump and the electrical heating to regulate the temperature of the air passing through the desiccant rotor specifically comprises the steps of: and judging whether the air temperature detected by the first temperature sensor is lower than a preset temperature or not, wherein the variable frequency water pump reaches the maximum opening, if so, starting the electric heater to regulate the air temperature, and if not, controlling the opening of the variable frequency water pump to regulate the air temperature.
8. The method of claim 7, wherein turning on the electric heater to condition the air temperature comprises the steps of: and judging whether the temperature detected by the second temperature sensor is equal to a preset temperature or not, if not, increasing the power of the electric heater, and if so, keeping the current power of the electric heater.
9. The control method of the heat exchange system according to claim 7, wherein controlling the opening degree of the variable frequency water pump to adjust the air temperature comprises the steps of: and judging whether the air temperature detected by the first temperature sensor is equal to a preset temperature, if so, keeping the opening degree of the variable-frequency water pump unchanged, and if not, reducing the opening degree of the variable-frequency water pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111572732.4A CN114322122B (en) | 2021-12-21 | 2021-12-21 | Rotary dehumidifier, heat exchange system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111572732.4A CN114322122B (en) | 2021-12-21 | 2021-12-21 | Rotary dehumidifier, heat exchange system and control method |
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| CN114322122A CN114322122A (en) | 2022-04-12 |
| CN114322122B true CN114322122B (en) | 2022-11-25 |
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| CN117628595B (en) * | 2024-01-08 | 2024-11-26 | 中建地下空间有限公司 | A system and method for comprehensive treatment of underground heat and moisture |
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| US20100242507A1 (en) * | 2009-03-24 | 2010-09-30 | Milton Meckler | Dynamic outside air management system and method |
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| US4014624A (en) * | 1974-08-16 | 1977-03-29 | Hitachi, Ltd. | Method and device for starting pump |
| JPH1054586A (en) * | 1996-08-08 | 1998-02-24 | Ebara Corp | Air-conditioning system |
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