CN112556110A - Indoor air quality regulation and control based on plant and personnel metabolism coupling - Google Patents
Indoor air quality regulation and control based on plant and personnel metabolism coupling Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention discloses indoor air quality regulation and control based on plant and personnel metabolism coupling, and relates to the technical field of indoor air quality regulation and control. In particular to an air quality regulation and control technology aiming at the indoor plants such as plant exhibition halls, flower and flower fairs and the like which have higher density than the conventional buildings and have long-time stay of working personnel and tourists indoors. Comprises thatStep A. defining indoor CO2A concentration level threshold; b, defining an indoor relative humidity threshold value; step C, setting indoor CO2The system comprises a concentration sensor, a relative humidity sensor, a photosynthetically active radiation sensor, a personnel quantity monitoring sensor and an indoor real-time state monitoring device; and D, regulating and controlling the fresh air system, the dehumidification system and the spray humidification system according to the indoor real-time state. In conclusion, the indoor air quality regulation and control system and the method provided by the method are based on comprehensive consideration of the coupling effect influence of personnel, plants and the indoor environment, and fill the blank of the indoor air quality regulation and control technology of the plant exhibition hall buildings.
Description
The technical field is as follows:
the invention relates to the technical field of indoor air quality regulation and control, in particular to an air quality regulation and control technology for the interior of a building, such as a plant exhibition hall, a flower and flower museum and the like, which has higher indoor plant density than that of a conventional building and has long-term stay of workers and tourists indoors.
Background art:
inhalation of respiratory action of person O2Exhalation of CO2Indoor CO2The high concentration can cause headache, hypodynamia, dyspnea and the like of indoor personnel, and indoor CO is used for meeting the health of the personnel2The concentration of CO is less than the set maximum CO2And (4) concentration. The design of a fresh air system of a conventional building is subject to the metabolism requirement of personnel, and the indoor fresh air quantity is more than or equal to 30m according to the regulation of indoor air quality standard GB/T18883-20023V (h, human), indoor CO2The daily average concentration is less than 1000 ppm. CO22The product is equal to plant nutrient, and has high CO content2The concentration is helpful for accelerating the photosynthesis of plants and promoting the growth of plants. The plant can absorb CO in the process of photosynthesis2Releasing O2Estimated 30% herbaceous coverage in the exhibition hall can cause indoor CO under the condition of sufficient illumination2The concentration decayed 60% within 1.5 h. Different from the conventional residential building, the ventilation in the greenhouse is relatively inaccurate, according to the technical specification of greenhouse plant maintenance management in Chongqing City, taking a flower area as an example, when the indoor temperature exceeds 18 ℃ in one year, the top window, the side window and the circulating fan are opened at proper time according to the weather condition so as to keep the interior of the greenhouseVentilation and air flow. "according to modern greenhouse engineering, the photosynthesis of plants at the end of the day will absorb a large amount of CO from the air in the greenhouse2The concentration of the organic substances is reduced rapidly, although the respiration of microorganisms and the decomposition of organic substances in the indoor soil release CO2Make indoor CO2Little supplement is obtained, but the demand is far from being met, and in order to maintain the plants to continue normal photosynthesis, the exhibition hall which is continuously illuminated at night needs to be continuously ventilated with fresh air to supplement indoor CO2Concentration, in the exhibition hall without continuous illumination at night, fresh air and indoor CO are required to be started immediately after sunrise2The concentration of CO is higher than the set minimum CO2Concentration (e.g., 200 to 300 ppm). The metabolic coupling of plants and personnel requires an indoor fresh air system regulation strategy adapted to the metabolic coupling of plants and personnel to meet the requirements of plant growth and personnel health.
The indoor air quality standard GB/T18883-2002 specifies that the relative humidity is 40-80% in the air-conditioning season in summer and 30-60% in the heating season in winter. The WELL building standard recommends that the indoor humidity be between 30% and 60%. According to technical specifications of greenhouse plant maintenance management in Chongqing City, for a flower area, when the indoor temperature of a greenhouse exceeds 18 ℃ and the air humidity exceeds 90%, a fan and a top window are started to enhance ventilation and moisture removal, and watering is strictly controlled; in midsummer, when the air humidity is lower than 55%, the spraying system needs to be started or the ground water needs to be sprayed in time to supplement the indoor humidity. For tropical rainforest areas, the indoor air humidity is kept between 65% and 85% all the time in one year, when the air humidity is higher than 90% and the indoor temperature is higher than 18 ℃, ventilation is conducted in time, and ventilation equipment is started to enhance ventilation so as to reduce the indoor air humidity; when the air humidity is lower than 60%, a manual watering or automatic spraying method is adopted to supplement the humidity in time so as to maintain the indoor air humidity'. Namely, the optimal humidity range suitable for the growth of the flower plants is 55 to 90 percent, and the optimal humidity range suitable for the tropical rain forest plants is 65 to 85 percent. The humidity range suitable for human being is between 30% and 60%, and the highest humidity is not more than 80%.
Disclosure of Invention
The invention aims to solve the problems of plant exhibition hall, flower exhibition and the likeThe type of building, people and plants all affect the air quality, which also affects the health of people and plants, and therefore an air quality control strategy different from that of a conventional civil building is required to ensure indoor air quality. The indoor air quality regulation and control system based on the metabolism coupling of plants and personnel is provided and consists of an indoor sensor cluster, an indoor personnel number monitoring sensor, an analysis and regulation and control unit, a fresh air system, a dehumidification system and a spray humidification system which are connected; wherein the indoor sensor cluster comprises CO2A concentration sensor, a relative humidity sensor and a photosynthetically active radiation sensor; the analysis regulation and control unit is used for analyzing the monitoring data of the indoor sensor cluster and the indoor personnel number monitoring sensor and regulating and controlling the fresh air system, the dehumidification system and the spraying humidification system in real time.
The invention relates to indoor air quality regulation and control based on plant and personnel metabolism coupling, which comprises the following steps:
step A. defining indoor CO2Threshold concentration level
Step A1. minimum CO required for photosynthesis of plants2Concentration, defining minimum CO in the room2Concentration M1, set to 200300 ppm;
step A2, defining the indoor highest CO according to personnel requirements2The concentration M2 was 6001000 ppm.
B, defining indoor relative humidity threshold value
B1, defining indoor minimum relative humidity RH1 and maximum relative humidity RH2 according to the optimal indoor relative humidity level required by plant growth;
defining a minimum indoor relative humidity RH3 and a maximum indoor relative humidity RH4 according to the indoor relative humidity level coupling required for plant growth and human metabolism.
Step C, setting indoor CO2The system comprises a concentration sensor, a relative humidity sensor, a photosynthetically active radiation sensor, a personnel quantity monitoring sensor and an indoor real-time state monitoring device;
and D, regulating and controlling the fresh air system, the dehumidification system and the spray humidification system according to the indoor real-time state.
Step D1, defining indoor minimum photosynthetically active radiation PFD1 according to the species of indoor exuberant plants, and setting the radiation PFD to be 0-50 mu mol/(m)2·s)；
Step D2., setting the infiltration air quantity Q3 according to the built state of the exhibition hall;
and D3, calculating the air quantity Q1 required by the fresh air system to meet the plant photosynthesis requirement and the fresh air quantity Q2 required by the fresh air system to meet the personnel requirement according to the species and the area of the indoor greening plants, the photosynthetic effective radiation intensity PFD, the number N of indoor personnel, the set minimum CO2 concentration M1 and the set maximum CO2 concentration M2, wherein the calculation formula is as follows:
in the formula, EplantCO emitted or absorbed for plant photosynthesis and respiration2A rate; epeopleExhaling CO for indoor personnel2Is related to the number of people N; moutIs outdoor CO2A concentration of about 400 ppm;
step D3.1 when the photosynthetically active radiation intensity PFD > PFD1, the photosynthesis intensity of the plant is greater than the respiration intensity, Eplant＜0；
Step D3.1.1 if MAX (Q1, Q2) is less than or equal to Q3, then the new fan is in standby mode. Otherwise, the fresh air fan starts an on-demand ventilation mode, and the fresh air volume is MAX (Q1, Q2);
step D3.2 when the photosynthetically active radiation intensity PFD is less than or equal to PFD1, the photosynthesis intensity of the plant is less than the respiration intensity, Eplant＞0；
Step D3.2.1, if Q2 is not greater than Q3, the fresh air level is in standby mode, otherwise, the fresh air fan turns on the on-demand ventilation mode, and the fresh air volume is Q2.
Step D4. determining to turn on a humidification or dehumidification mode based on the indoor relative humidity level;
the humidification adopts the spraying humidification comparatively suitable in the plant exhibition hall building, and spraying humidification height and position should plant height and position with indoor plant and be suitable mutually, and do not cause the interference to indoor personnel. The dehumidification system can adopt measures such as solution dehumidification, rotary wheel dehumidification, condensation dehumidification and the like which are adaptive to the conditions of the project.
Step D4.1, when no people are in the room and the number of people N is 0,
d4.1.1, if the indoor relative humidity is between RH1 and RH2, the indoor humidity is proper, and the humidifying system and the dehumidifying system are both in standby mode;
d4.1.2 if the indoor relative humidity is less than RH1, starting the spray humidification mode;
d4.1.3 if the indoor relative humidity is higher than RH2, starting the dehumidification mode;
d4.2, when people exist in the room and the number N of people is more than 0;
d4.2.1, if the indoor relative humidity is between RH3 and RH4, the indoor humidity is proper, and the humidifying system and the dehumidifying system are both in standby mode;
d4.2.2 if the indoor relative humidity is less than RH3, starting the spray humidification mode;
step D4.2.3 if the indoor relative humidity is greater than RH4, the dehumidification mode is turned on.
As described above, the invention provides indoor air quality control based on plant and personnel metabolism coupling, and indoor CO is controlled2The concentration and the humidity level are comprehensively regulated and controlled according to needs, and the blank of indoor air quality regulation and control technical strategies for buildings such as plant exhibition halls, flower and flower museums and the like in the existing research is filled.
Drawings
FIG. 1 is a block diagram of the indoor air quality control process based on the plant and personnel metabolism coupling according to the present invention;
FIG. 2 is a block diagram of a conditioning system connection according to an embodiment of the present invention;
FIG. 3 shows an indoor CO under an unattended (closed-display) condition according to an embodiment of the present invention2A concentration variation graph;
FIG. 4 shows an indoor CO under a situation where a person is visiting the room in an embodiment of the present invention2Curve of change in concentrationFigure (a).
Detailed Description
The invention is further described in the following with reference to the figures and examples
Example, a certain exhibition hall area is 500m2And a height of 4.5 m. Flower shrub plants are developed indoors, and the coverage area is 30 percent. The net photosynthetic rate of the shrub plants in daytime is about 1 g/(m) through statistics2H) a night dark breathing rate of about 0.25 g/(m)2H) leaf area of about 3.9. The frequency of permeation ventilation of the exhibition hall door and window is 0.5h-1。
The invention relates to an indoor air quality control system based on plant and human metabolism coupling (as shown in figure 2).
The system is formed by connecting an indoor sensor cluster 1, an indoor personnel number monitoring sensor 2, an analysis and regulation unit 3, a fresh air system 4, a dehumidification system 5 and a spray humidification system 6;
wherein the indoor sensor cluster 1 comprises CO2A concentration sensor, a relative humidity sensor and a photosynthetically active radiation sensor;
the analysis regulation and control unit 3 is connected with and analyzes data of the indoor sensor cluster 1 and the indoor personnel number monitoring sensor 2; connect and regulate and control new trend system 4, dehumidification system 5, spraying humidification system 6.
The invention relates to an indoor air quality regulation and control step based on the coupling of plant and human metabolism (as shown in figure 1).
Step A. defining indoor CO2A concentration level threshold.
Step A1. minimum CO required for photosynthesis of plants2Concentration definition of minimum CO in a room2Concentration PPM 1. In this example, M1 was taken as 300 ppm.
Step A2, defining the indoor highest CO according to personnel requirements2Concentration M2. In this example, M2 was 1000 ppm.
And B, defining an indoor relative humidity threshold.
Defining indoor minimum relative humidity RH1 and maximum relative humidity RH2 according to the optimum indoor relative humidity level required for plant growth. In this example, RH1 is 55% and RH2 is 90%.
Defining a minimum indoor relative humidity RH3 and a maximum indoor relative humidity RH4 according to the indoor relative humidity level coupling required for plant growth and human metabolism. In this example, RH3 and RH4 were 55% and 70%, respectively.
And C, arranging an indoor CO2 concentration sensor, a relative humidity sensor, a photosynthetically active radiation sensor and a personnel quantity monitoring sensor, and monitoring the indoor real-time state.
And D, regulating and controlling the fresh air system 4, the dehumidification system 5 and the spray humidification system 6 according to the indoor real-time state.
Step d1. defining indoor minimum photosynthetically active radiation PFD1 according to the species of the indoor exuberant plant, taking PFD1 as 50 μmol/(m2 · s) in this example.
Step D2. sets the infiltration air flow rate Q3 according to the constructed state of the exhibition hall.
D3, setting the minimum CO according to the species and the area of the indoor greening plants, the photosynthetic effective radiation intensity PFD, the number of personnel N2Concentration M1, set maximum CO2The concentration M2 calculates the required air volume Q1 of the fresh air system for meeting the plant photosynthesis requirement and the required fresh air volume Q2 of the fresh air system for meeting the personnel requirement, and the calculation formula is as follows:
in the formula, EplantCO emitted or absorbed for plant photosynthesis and respiration2A rate; epeopleExhaling CO for indoor personnel2Is related to the number of people N; m1-300 ppm; mout is outdoor CO2Concentration, equal to about 400 ppm.
And D3.1, when the photosynthetically active radiation intensity PFD is more than 50 mu mol/(m2 & s), the photosynthesis intensity of the plant is more than the respiration intensity, and Eplant is less than 0.
Step D3.1.1 if MAX (Q1, Q2) is less than or equal to Q3, then the new fan is in standby mode. Otherwise, the fresh air fan starts the on-demand ventilation mode, and the fresh air volume is MAX (Q1, Q2).
And D3.2, when the photosynthetic effective radiation intensity PFD is less than or equal to 50 mu mol/(m2 & s), the photosynthesis intensity of the plant is less than the respiration intensity, and Eplant is more than 0.
Step D3.2.1, if Q2 is not greater than Q3, the fresh air level is in standby mode, otherwise, the fresh air fan turns on the on-demand ventilation mode, and the fresh air volume is Q2.
The exhibition hall can accommodate 150 people at peak time, and the required fresh air volume is 5400m under the condition of full load of personnel3/h。
Assume an initial time (6:00) indoor CO2 concentration of 400 ppm;
step D4., the humidification or dehumidification mode is determined to be started according to the indoor relative humidity level, the humidification mode adopted by the plant exhibition hall building is proper, the spray humidification height and position are proper to the indoor plant planting height and position, and no interference is caused to indoor personnel.
And step D4.1, when no person is in the room and N is 0,
step D4.1.1, if the indoor relative humidity is between RH1 (RH 1 is 55%) and RH2 (RH 2 is 90%), it indicates that the indoor humidity is appropriate, and the humidification system and the dehumidification system are both in the standby mode;
d4.1.2, if the indoor relative humidity is less than 55%, starting a spray humidifying mode;
step D4.1.3 if the indoor relative humidity is greater than 90%, the dehumidification mode is turned on.
Step D4.2, when people exist in the room and the number of people N is more than 0,
step D4.2.1, if the indoor relative humidity is between RH3 (RH 3 is 55%) and RH4 (RH 4 is 70%), it indicates that the indoor humidity is appropriate, and the humidification system and the dehumidification system are both in the standby mode;
d4.2.2, if the indoor relative humidity is less than 55%, starting a spray humidifying mode;
step D4.2.3 if the indoor relative humidity is greater than 70%, the dehumidification mode is turned on.
No one visit (close exhibition)) Indoor CO under circumstances2The concentration dynamically changes as shown in figure 3.
Indoor CO under human visit2The concentration was varied dynamically as shown in figure 4.
The dynamic state refers to the change of indoor real-time relative humidity, effective radiation, personnel number and other conditions.
In summary, the invention provides an indoor air quality regulation and control system and method based on the coupling effect of the comprehensive consideration of personnel, plants and indoor environment, and fills the blank of the indoor air quality regulation and control technology of plant exhibition buildings based on the coupling effect of the plants and the metabolism of the personnel.
Claims (7)
1. An indoor air quality regulation and control system based on plant and personnel metabolism coupling is characterized by being formed by connecting an indoor sensor cluster (1), an indoor personnel number monitoring sensor (2), an analysis regulation and control unit (3), a fresh air system (4), a dehumidification system (5) and a spray humidification system (6);
wherein the indoor sensor cluster (1) comprises CO2A concentration sensor, a relative humidity sensor and a photosynthetically active radiation sensor;
the analysis regulation and control unit (3) is connected with and analyzes data of the indoor sensor cluster (1) and the indoor personnel number monitoring sensor (2); connect and regulate and control new trend system (4), dehumidification system (5), spraying humidification system (6).
2. Indoor air quality regulation and control based on plant and personnel metabolism effect coupling, its characterized in that includes the following step:
step A. defining indoor CO2A concentration level threshold;
b, defining an indoor relative humidity threshold value;
c, setting an indoor sensor cluster (1) and a personnel number monitoring sensor (2), and monitoring an indoor real-time state;
and D, regulating and controlling the fresh air system (4), the dehumidification system (5) and the spray humidification system (6) through the analysis regulation and control unit (3) according to the indoor real-time state.
3. The coupled indoor air quality control based on plant and human metabolism according to claim 2, wherein the step a. further comprises the steps of:
step A1. minimum CO required for photosynthesis of plants2Concentration definition of minimum CO in a room2The concentration M1 is set to be 200-300 ppm;
step A2, defining the indoor highest CO according to personnel requirements2The concentration M2 is set to be 600 to 1000 ppm.
4. The coupled indoor air quality control based on plant and human metabolism according to claim 2, wherein the step b.
B1, defining indoor minimum relative humidity RH1 and maximum relative humidity RH2 according to the optimal indoor relative humidity level required by plant growth;
defining a minimum indoor relative humidity RH3 and a maximum indoor relative humidity RH4 according to the indoor relative humidity level coupling required for plant growth and human metabolism.
5. The coupled indoor air quality control based on plant and human metabolism according to claim 2, wherein the step d.
Step D1, defining indoor minimum photosynthetically active radiation PFD1 according to the species of indoor exuberant plants, and setting the radiation PFD to be 0-50 mu mol/(m)2·s)；
Step D2., setting the infiltration air quantity Q3 according to the built state of the exhibition hall;
and D3, calculating the air quantity Q1 required by the fresh air system to meet the plant photosynthesis requirement and the fresh air quantity Q2 required by the fresh air system to meet the personnel requirement according to the species and the area of the indoor greening plants, the photosynthetic effective radiation intensity PFD, the number N of indoor personnel, the set minimum CO2 concentration M1 and the set maximum CO2 concentration M2, wherein the calculation formula is as follows:
in the formula, EplantCO emitted or absorbed for plant photosynthesis and respiration2A rate; epeopleExhaling CO for indoor personnel2Is related to the number of people N; moutIs outdoor CO2Concentration, equal to about 400 ppm.
Step D4. determining to turn on a humidification or dehumidification mode based on the indoor relative humidity level;
the humidification mode should preferably adopt the spraying humidification system, and spraying humidification height and position should be suitable with indoor plant and plant height and position, and do not cause the interference to indoor personnel.
6. The coupled indoor air quality control based on metabolism of plants and people as claimed in claim 5, wherein the step D3, further comprising the steps of:
step D3.1, when the photosynthetic effective radiation intensity PFD is more than PFD1, the photosynthesis intensity of the plant is more than the respiration intensity, and Eplant is less than 0;
step D3.1.1 if MAX (Q1, Q2) is less than or equal to Q3, then the new fan is in standby mode. Otherwise, the fresh air fan starts an on-demand ventilation mode, and the fresh air volume is MAX (Q1, Q2);
step D3.2, when the photosynthetic effective radiation intensity PFD is less than or equal to PFD1, the photosynthesis intensity of the plant is less than the respiration intensity, and Eplant is more than 0;
step D3.2.1, if Q2 is not greater than Q3, the fresh air level is in standby mode, otherwise, the fresh air fan turns on the on-demand ventilation mode, and the fresh air volume is Q2.
7. The coupled indoor air quality control based on metabolism of plants and people as claimed in claim 5, wherein the step D4, further comprising the steps of:
step D4.1, when no people are in the room and the number of people N is 0,
d4.1.1, if the indoor relative humidity is between RH1 and RH2, the indoor humidity is proper, and the humidifying system and the dehumidifying system are both in standby mode;
d4.1.2 if the indoor relative humidity is less than RH1, starting the spray humidification mode;
step D4.1.3 if the indoor relative humidity is greater than RH2, the dehumidification mode is turned on.
Step D4.2, when people exist in the room and the number of people N is more than 0,
d4.2.1, if the indoor relative humidity is between RH3 and RH4, the indoor humidity is proper, and the humidifying system and the dehumidifying system are both in standby mode;
d4.2.2 if the indoor relative humidity is less than RH3, starting the spray humidification mode;
step D4.2.3 if the indoor relative humidity is greater than RH4, the dehumidification mode is turned on.
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| KR20190131873A (en) * | 2018-05-17 | 2019-11-27 | 주식회사 비즈모델라인 | Air Quality Management Equipment by Vegetation |
| CN109769496A (en) * | 2019-01-24 | 2019-05-21 | 江苏爱维特船舶设备有限公司 | Planting manually intelligent climatic chamber |
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| CN114493270A (en) * | 2022-01-26 | 2022-05-13 | 中认国证(北京)评价技术服务有限公司 | Method and system for testing room ventilation times based on carbon dioxide release source |
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