CN114704924B - Temperature and humidity control method and device for process air conditioning system - Google Patents
Temperature and humidity control method and device for process air conditioning system Download PDFInfo
- Publication number
- CN114704924B CN114704924B CN202210420278.9A CN202210420278A CN114704924B CN 114704924 B CN114704924 B CN 114704924B CN 202210420278 A CN202210420278 A CN 202210420278A CN 114704924 B CN114704924 B CN 114704924B
- Authority
- CN
- China
- Prior art keywords
- energy cost
- humidification
- mist
- humidifying
- conditioning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 194
- 238000004378 air conditioning Methods 0.000 title claims abstract description 68
- 239000003595 mist Substances 0.000 claims abstract description 100
- 238000005265 energy consumption Methods 0.000 claims abstract description 53
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 34
- 229910052799 carbon Inorganic materials 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000007791 dehumidification Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/18—Air-humidification, e.g. cooling by humidification by injection of steam into the air
-
- 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
- F24F2110/10—Temperature
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application discloses a temperature and humidity control method and a temperature and humidity control device of a process air conditioning system, wherein the temperature and humidity control method comprises the following steps: collecting a plurality of real-time air parameters of an exhaust fresh air mixing part of a process air conditioning system; respectively calculating a first total energy cost under a micro-mist humidifying process mode and a second total energy cost under a steam humidifying process mode based on the current working condition of the process air conditioning system, wherein a high-pressure micro-mist humidifying part is in a working state in the micro-mist humidifying process mode, and a dry steam humidifying part is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state; and controlling the operation of the process air conditioning system according to the process mode corresponding to the lower one of the first total energy cost and the second total energy cost. The application realizes the double-station mode, and selects the process mode with the lowest energy consumption under different working conditions so as to minimize the energy consumption of the process air conditioning system.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a temperature and humidity control method and device of a process air conditioning system.
Background
In order to ensure the quality of cigarette products, a cigarette manufacturing enterprise has strict temperature and humidity control requirements in the production and storage processes, and generally adopts a large-scale process air conditioner to perform air treatment, so that the energy consumption is relatively high in total energy consumption of factories. With the increasing importance of green low-carbon development in China, various novel energy-saving technologies and control methods applied to process air conditioning systems are widely applied, carbon emission is reduced, and meanwhile, the energy operation cost of enterprises can be reduced, and the economic benefit of the enterprises is improved.
In the process of adjusting the temperature and the humidity of the process air conditioner, the actual temperature and the set temperature and the humidity of a controlled area are compared to determine the actual working condition of the process air conditioner, and then the process flows of cooling of a surface air cooler, dehumidification of the surface air cooler, humidification, heating of a heater and the like are selected to process the air after mixing into set air supply temperature and humidity state points. The existing humidifying technology mainly comprises dry steam humidifying, high-pressure micro-mist humidifying and wet film humidifying technologies. The dry steam humidifying technology improves the absolute moisture content in the air by spraying saturated dry steam into the air-mixed air, and the humidifying process is equivalent to isothermal humidifying, namely the absolute moisture content and enthalpy value rise before and after humidifying, but the air temperature is basically unchanged; the high-pressure micro-mist humidification and wet film humidification technology improves the absolute moisture content in the air in a mode of spraying or forming a water film for dehumidification, the humidification process is equivalent to isenthalpic humidification, namely the absolute moisture content is increased before and after humidification, the enthalpy value is basically unchanged, and the air temperature is reduced.
If a single humidification technology is adopted in the process air conditioner, investigation and analysis are required to be carried out in combination with the annual temperature and humidity control requirement, and a humidification technology with lower comprehensive humidification energy consumption is selected. However, whichever single humidification technique is used, this humidification technique is not the most energy efficient under certain conditions, and therefore, process air conditioning employing a single humidification technique cannot minimize energy consumption.
Disclosure of Invention
The application provides a temperature and humidity control method and a temperature and humidity control device for a process air conditioning system, wherein the process air conditioning system is provided with a high-pressure micro-mist humidifying part and a dry steam humidifying part at the same time, a double-process mode is realized, and the process mode with the lowest energy consumption is selected under different working conditions so as to enable the energy consumption of the process air conditioning system to be the lowest.
The application provides a temperature and humidity control method of a process air conditioning system, wherein the process air conditioning system comprises a high-pressure micro-mist humidifying part and a dry steam humidifying part, and the temperature and humidity control method comprises the following steps:
collecting a plurality of real-time air parameters of an exhaust fresh air mixing part of a process air conditioning system, wherein the plurality of real-time air parameters comprise an air enthalpy value of mixed air, a mixed air ball temperature and a mixed air moisture content;
respectively calculating a first total energy cost under a micro-mist humidifying process mode and a second total energy cost under a steam humidifying process mode based on the current working condition of the process air conditioning system, wherein a high-pressure micro-mist humidifying part is in a working state in the micro-mist humidifying process mode, and a dry steam humidifying part is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state;
and controlling the operation of the process air conditioning system according to the process mode corresponding to the lower one of the first total energy cost and the second total energy cost.
Preferably, the first total energy cost includes high-pressure micro mist humidification energy consumption, which is obtained from a unit moisture content energy cost of the high-pressure micro mist humidification and a target moisture content difference of the high-pressure micro mist humidification portion.
Preferably, the second total energy cost includes dry steam humidification energy consumption, the dry steam humidification energy consumption being obtained from a unit enthalpy value energy cost of the dry steam humidification and a target enthalpy value difference of the dry steam humidification portion.
Preferably, the energy cost per unit moisture content of the high pressure micro mist humidification and the energy cost per unit enthalpy of the dry steam humidification are determined by current cost dimensions, including economic cost dimensions and carbon emission cost dimensions.
Preferably, if the current working condition is a cooling and dehumidifying working condition and the cooling requirement is greater than the dehumidifying requirement, a micro mist humidifying process mode is adopted.
Preferably, if the current working condition is a cooling and humidifying working condition, a micro-mist humidifying process mode is adopted.
The application also provides a temperature and humidity control device of the process air conditioning system, wherein the process air conditioning system comprises a high-pressure micro-mist humidifying part and a dry steam humidifying part, and the temperature and humidity control device comprises an acquisition module, a total energy cost calculation module and a control module;
the acquisition module is used for acquiring a plurality of real-time air parameters of an exhaust fresh air mixing part of the process air conditioning system, wherein the plurality of real-time air parameters comprise the air enthalpy value of mixed air, the temperature of mixed air balls and the moisture content of mixed air;
the total energy cost calculation module is used for respectively calculating a first total energy cost under a micro-mist humidification process mode and a second total energy cost under a steam humidification process mode based on the current working condition of the process air conditioning system, wherein a high-pressure micro-mist humidification part in the micro-mist humidification process mode is in a working state, and a dry steam humidification part is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state;
the control module is used for controlling the operation of the process air conditioning system according to the process mode corresponding to the lower one of the first total energy cost and the second total energy cost.
Preferably, the total energy cost calculation module is used for calculating the high-pressure micro-mist humidifying energy consumption according to the unit moisture content energy cost of the high-pressure micro-mist humidifying and the target moisture content difference value of the high-pressure micro-mist humidifying part.
Preferably, the total energy cost calculation module is used for calculating the dry steam humidification energy consumption according to the unit enthalpy value energy cost of the dry steam humidification and the target enthalpy value difference value of the dry steam humidification part.
Preferably, the temperature and humidity control device further comprises a base determining module, wherein the base determining module is used for determining the unit moisture content energy cost of high-pressure micro mist humidification and the unit enthalpy value energy cost of dry steam humidification according to the current cost dimension.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a block diagram of one embodiment of a process air conditioning system provided by the present application;
FIG. 2 is a flow chart of a temperature and humidity control method of a process air conditioning system provided by the application;
fig. 3 is a block diagram of a temperature and humidity control device of a process air conditioning system provided by the application.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
Based on the above description of different humidification processes, different humidification processes consume different energy types without considering the influence of the air temperature in the humidification process, thereby affecting the economic cost and the total carbon emission. The dry steam humidification is adopted to use steam energy, the dry steam humidification is prepared by fossil energy or electric energy, and the high-pressure micro-mist humidification or wet film humidification only consumes water resources, compared with the dry steam humidification or the wet film humidification, the dry steam humidification has very little economic cost and carbon emission, so that when the process air conditioning system only has the working condition of humidification requirement, the process mode of the high-pressure micro-mist humidification or the wet film humidification is selected, and the advantages of energy conservation and emission reduction are more obvious. Under the requirements of constant temperature and humidity air treatment, different humidification processes are selected under different working conditions of the process air conditioner, and the energy consumption generated by the humidification process is more or less in and out: under the cooling and humidifying working condition, on the premise of larger cooling load, the high-pressure micro-mist humidifying or wet film humidifying is selected to play a role in humidifying, and meanwhile, a certain cooling effect is played, so that the refrigeration energy consumption can be reduced, and the high-pressure micro-mist humidifying or wet film humidifying is selected to save more energy; under the heating and humidifying working condition, the high-pressure micro mist humidification or the wet film humidification is selected, so that the energy consumption of humidification is saved, but the air temperature is reduced, and the heating compensation is needed through a heater, so that the extra energy consumption is caused.
Based on the analysis of the scheme adopting the single humidification process, the application improves the process air conditioning system, and isenthalpic humidification and isothermal humidification equipment are simultaneously installed in the process air conditioning system, so that the process air conditioning system has hardware conditions of dual-mode humidification technology, and humidification technology with lower energy consumption is selected under different working conditions, thereby further optimizing humidification efficiency and reducing humidification energy consumption.
Therefore, the application provides a temperature and humidity control method and a temperature and humidity control device for a process air conditioning system, wherein the process air conditioning system is provided with a high-pressure micro-mist humidifying part and a dry steam humidifying part at the same time, a double-process mode is realized, and the process mode with the lowest energy consumption is selected under different working conditions so as to enable the energy consumption of the process air conditioning system to be the lowest.
The present application will be described in detail below with high-pressure micro mist humidification as an example of isenthalpic humidification and dry steam humidification as an example of isothermal humidification. It will be appreciated that isenthalpic humidification may also be achieved using wet film humidification techniques and isothermal humidification may be achieved using other humidification techniques.
The process air conditioning system comprises a high-pressure micro-mist humidifying part and a dry steam humidifying part, and under different working conditions, the high-pressure micro-mist humidifying part (micro-mist humidifying process mode) or the dry steam humidifying part (steam humidifying process mode) is adopted to process mixed air by taking the lowest energy consumption as a standard, namely the process air conditioning system is a dual-mode system.
As shown in fig. 1, as an embodiment, the process air conditioning system of the present application includes a return air and intermediate efficiency washing filter cartridge filtering portion 1, a return air machine mounting portion 2, an exhaust fresh air mixing portion 3, a plate-type primary filtering portion 4, a surface cooling portion 5, an intermediate portion 6, a high pressure micro mist humidifying portion 7, a dry steam humidifying portion 8, a heating portion 9, a blower mounting portion 10, and a blower portion 11. The air in the temperature and humidity controlled area of the cigarette factory is provided with kinetic energy by an air return machine installation part 2, dust in the environment is filtered by an air return and medium-efficiency water washing filter cartridge filtering part 1, and then the air is fully mixed with external fresh air filtered by a plate-type primary filtering part 4 at an air exhaust fresh air mixing part 3, the mixed air (hereinafter called mixed air) is subjected to temperature and humidity treatment by at least one of a surface cooling part 5, a middle part 6, a high-pressure micro-mist humidifying part 7, a dry steam humidifying part 8 and a heating part 9, the air subjected to temperature and humidity treatment is provided with kinetic energy by an air feeder installation part 10, and the air subjected to temperature and humidity treatment is conveyed to the corresponding temperature and humidity controlled area by an air supply part 11. The control part of the process air conditioning system controls the opening degree of the surface cooling valve of the surface cooling part 5 to control the flow of the chilled water passing through the surface cooler, so that the cooling or dehumidification of the mixed air is realized. The control part of the process air conditioning system controls the opening quantity of the high-pressure micro mist nozzles of the high-pressure micro mist humidifying part 7 to control the atomization flow sprayed into the air, so that the humidification of mixed air is realized. The control part of the process air conditioning system controls the opening degree of the steam humidification valve of the dry steam humidification part 8 to control the steam flow sprayed into the air, thereby realizing the humidification of mixed air. The control part of the process air conditioning system controls the opening degree of the heating valve of the heating part 9 to control the medium flow rate passing through the heater, thereby realizing the temperature rise of the mixed air. The cooling process and the dehumidifying process can only be realized by the surface cooling part 5, the heating process can only be realized by the heating part 9, and the humidifying process can be realized by the high-pressure micro-mist humidifying part 7 or the dry steam humidifying part 8.
Example 1
Based on the process air conditioning system, the application provides a temperature and humidity control method of the process air conditioning system. As shown in fig. 2, the temperature and humidity control method of the process air conditioning system includes the following steps:
s210: the method comprises the steps of collecting a plurality of real-time air parameters of an exhaust fresh air mixing part 3 of a process air conditioning system, wherein the plurality of real-time air parameters comprise an air enthalpy value i of mixed air, a mixed air ball temperature t and a mixed air moisture content d, and the three have the following relation:
i＝1.005t+d(2500+1.84t) (1)
as an example, the mixed air moisture content d is determined according to the mixed air relative humidity RH and the mixed air ball temperature t of the exhaust fresh air mixing section 3.
S220: based on the current working condition of the process air conditioning system, the first total energy cost Q under the micro-mist humidifying process mode is calculated respectively 1 And a second total energy cost Q in a steam humidification process mode 2 。
The high-pressure micro-mist humidifying part is in a working state in the micro-mist humidifying process mode, and the dry steam humidifying part is in a non-working state. In the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state.
Wherein the first total energy cost Q 1 Including high-pressure micro mist humidifying energy consumption Q w High-pressure micro-mist humidifying energy consumption Q w Energy cost y per unit moisture content based on high pressure micro mist humidification w And a target moisture content difference value of the high-pressure micro mist humidifying part. Second total energy cost Q 2 Including dry steam humidification energy consumption Q s Dry steam humidifying energy consumption Q S Energy cost y based on unit enthalpy of dry steam humidification s And obtaining a target enthalpy value difference value of the dry steam humidifying part.
Under different working conditions, the first total energy cost Q 1 And a second total energy cost Q 2 And also comprises heating energy consumption Q h Or refrigeration cooling energy consumption Q c . Heating energy consumption Q h Energy cost y in terms of unit enthalpy of heating h And obtaining a target enthalpy value difference of the heating part. Refrigeration cooling energy consumption Q c Energy cost y based on unit enthalpy value of refrigeration and cooling c And obtaining the target enthalpy value difference value of the surface cooler.
Preferably, during production, the economic cost dimension or the carbon emission cost dimension may be selected as the current cost dimension to achieve the energy consumption goal of lowest economic cost or lowest carbon emission cost.
Cost of energy per moisture content y of high pressure micro mist humidification in economic cost dimension and carbon emission cost dimension w Unit enthalpy energy cost y of dry steam humidification s Energy source of unit enthalpy of heatingThe present y h Unit enthalpy energy cost y of refrigeration and cooling c The manner of determination of (2) is different.
Specifically, as an embodiment, in the dimension of economic cost, the unit enthalpy value energy cost y of refrigeration cooling c The energy cost y of the unit moisture content of the high-pressure micro-mist humidification is obtained by converting the refrigerating capacity, the electricity consumption and the peak-valley electricity price of the refrigerating machine w The dry steam humidifying unit enthalpy energy cost y is obtained by converting the water consumption of high-pressure micro mist, the power consumption of a pump station and the peak-to-valley power price s The energy cost y of the unit enthalpy value of heating is obtained by converting the steam yield of the boiler, the natural gas consumption, the peak-valley electricity price and the unit price of the natural gas h Is obtained by heat and energy price conversion. In the carbon emission dimension, the energy cost of the unit enthalpy value of refrigeration and cooling is obtained by converting the index coefficient of refrigeration capacity, electricity consumption and electric energy carbon emission of a refrigerator, and the energy cost y of the unit moisture content of high-pressure micro-mist humidification w The energy cost y of unit enthalpy value of dry steam humidification is obtained by converting the high-pressure micro-mist water consumption, power consumption of a pump station and electric energy carbon emission index coefficient s The energy cost y of the unit enthalpy value of heating is obtained by converting the boiler steam production, natural gas consumption, electric energy carbon emission index coefficient and natural gas carbon emission index coefficient h Is obtained by converting heat and energy carbon emission index coefficients.
S230: and controlling the operation of the process air conditioning system according to the process mode corresponding to the lower one of the first total energy cost and the second total energy cost.
Specifically, the application comprises a heating and humidifying working condition, a cooling and dehumidifying working condition and a cooling and humidifying working condition.
In each working condition, the target air enthalpy value set value at the air supply part 11 is recorded as i s ' and the target air supply dry ball temperature set value is recorded as t s ' the target air supply moisture content set value is denoted as d s ′。
As one example, the target supply air moisture content set point is denoted as d s ' record t according to target air supply dry bulb temperature set value s ' and target supply air relative humidity set point RHS.
The enthalpy value of the air after surface cooling, cooling and dehumidifying is recorded as i 0 ' the dry ball temperature after surface cooling and dehumidification is recorded as t 0 ' the moisture content after surface cooling and dehumidification is denoted as d 0 ' the moisture analysis coefficient is marked as epsilon, and the air constant pressure specific heat capacity is marked as C a 。
Then the following relationship exists:
t 0 ′＝t-(i-i 0 ′)/(C a ·ε) (2)
in the micro mist humidification process mode, the enthalpy value of the air humidified by the high-pressure micro mist is recorded as i 1 'the dry bulb temperature after high-pressure micro mist humidification is marked as t1', and the moisture content after high-pressure micro mist humidification is marked as d 1 '. In the steam humidification process mode, the enthalpy value of the air humidified by the dry steam is recorded as i 2 ' the temperature of the dry bulb after the dry steam is humidified is recorded as t 2 ' the moisture content after the dry steam humidification is denoted as d 2 ′。
The same holds the following relationship:
i s ′＝1.005t s ′+d s ′(2500+1.84t s ′) (3)
i 1 ′＝1.005t 1 ′+d 1 ′(2500+1.84t 1 ′) (4)
i 2 ′＝1.005t 2 ′+d 2 ′(2500+1.84t 2 ′) (5)
the manner in which the first total energy cost and the second total energy cost for each operating condition are calculated is described below.
(1) Heating and humidifying demand working conditions: under the working condition d s ' > d, and t s ′＞t。
In the micro-mist humidification process mode, when the air treatment process is to firstly adopt the high-pressure micro-mist humidification part to humidify and then adopt the heater to heat the air, the moisture content in the heating process of the heater is unchanged, and the enthalpy value of the air in the humidifying process of the high-pressure micro-mist humidification part is unchanged, namely d 1 ′＝d s ' and i 1 ' i, then:
Q 1 ＝Q w +Q h ＝(d 1 ′-d)y w +(i s ′-i 1 ′)y h
＝(d s ′-d)y w +(i s ′-1.005t-d(2500+1.84t))y h (6)
in the steam humidification process mode, when the air treatment process is to firstly adopt a dry steam humidification process to carry out humidification and then adopt a heater to heat the air, the moisture content in the heating process of the heater is unchanged, and the temperature in the humidification process of the dry steam humidification part is unchanged, namely d 2 ′＝d s ', and t 2 ' t, then:
i 2 ′＝1.005t+d s ′(2500+1.84t) (7)
Q 2 ＝Q s +Q h ＝(i 2 ′-i)ys+(i s ′-i 2 ′)y h
＝(d s ′-d)(2500+1.84t)y s +(i s ′-1.005t-d s ′(2500+1.84t))y h
(8)
the deduction can be obtained:
Q 1 -Q 2 ＝(d s ′-d)y w +(d s ′-d)(2500+1.84t)(y h -y s ) (9)
if Q 1 -Q 2 More than 0, the energy cost of heating and humidifying by adopting a steam humidifying process mode is lower; if Q 1 -Q 2 And less than 0, the energy cost for heating and humidifying by adopting a micro-mist humidifying process mode is lower.
(2) Cooling dehumidification operating mode to the cooling demand is greater than dehumidification demand: under the working condition, t s ' < t, and d s ′＜d。
(3) Cooling and humidifying working conditions: under the working condition, t s ' < t, and d s ′≥d。
Under the working conditions of (2) and (3), in the micro-mist humidifying process mode, when the air treatment process is to firstly adopt a surface cooler to cool and dehumidify, and then adopt a high-pressure micro-mist humidifying part to humidify, the method can be as follows:
Q 1 ＝Q c +Q w ＝(i-i 01 ′)y c +(d s ′-d 01 ′)y w (10)
wherein i is 01 Under the working conditions of (2) and (3), the enthalpy value of the air cooled and dehumidified by the surface cooler is d under the micro-mist humidification process mode 01 And (3) the moisture content of the surface cooler after cooling and dehumidifying is in a micro-mist humidifying process mode under the working conditions of (2) and (3).
In the steam humidification process mode, when the air treatment process is to adopt a surface cooler for cooling and dehumidifying firstly and then adopt a dry steam humidification part for humidification, the method can be used for obtaining:
Q 2 ＝Q c +Q s ＝(i-i 02 ′)y c +(i s ′-i 02 ′)y s (11)
wherein i is 02 And (3) under the working conditions of (2) and (3), the air enthalpy value after the surface cooler is cooled and dehumidified in a steam humidification process mode.
The deduction can be obtained:
Q 1 -Q 2 ＝(d s ′-d 01 ′)y w +(i 02 ′-i 01 ′)y c +(i 02 ′-i s ′)y s (12)
in the practical application scene, the unit moisture content energy cost y of high-pressure micro-mist humidification w Extremely low and far less than the energy cost y of unit enthalpy value of refrigeration and cooling c And unit enthalpy energy cost y of dry steam humidification s And the high-pressure micro mist humidification part mainly plays a role of humidification compensation caused by excessive dehumidification, so the first term in the above formula is basically ignored.
Therefore, under the same working condition, the cooling capacity of the surface cooler in the micro-mist humidification process mode is smaller than that of the surface cooler in the steam humidification process mode, namely the air enthalpy value of the surface cooler in the micro-mist humidification process mode is smaller than that of the surface cooler in the steam humidification process mode, namely i 01 ′＞i 02 ′，i 02 ′-i 01 ' < 0. In addition, as is clear from the above, the enthalpy value of the air in the humidification process of the dry steam humidifying part is increased,i.e. i 02 ′-i s ' < 0. From this, Q 1 -Q 2 And less than 0, the energy cost of adopting a micro-mist humidification process mode to cool and dehumidify (the cooling requirement is greater than the dehumidification requirement) or cool and humidify is lower.
Example two
Based on the temperature and humidity control method, the application provides a temperature and humidity control device of a process air conditioning system. As shown in fig. 3, the temperature and humidity control device includes an acquisition module 310, a total energy cost calculation module 320, and a control module 330.
The collection module 310 is configured to collect a plurality of real-time air parameters of an exhaust fresh air mixing part of the process air conditioning system, where the plurality of real-time air parameters include an air enthalpy value of mixed air, a mixed air balloon temperature, and a mixed air moisture content.
The total energy cost calculation module 320 is configured to calculate, based on a current working condition of the process air conditioning system, a first total energy cost in a micro-mist humidification process mode and a second total energy cost in a steam humidification process mode, where the high-pressure micro-mist humidification unit is in a working state and the dry steam humidification unit is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state.
Specifically, the total energy cost calculation module 320 is configured to calculate the high-pressure micro-mist humidification energy consumption according to the unit moisture content energy cost of the high-pressure micro-mist humidification and the target moisture content difference value of the high-pressure micro-mist humidification portion.
The total energy cost calculation module 320 is further configured to calculate dry steam humidification energy consumption according to the unit enthalpy value energy cost of dry steam humidification and the target enthalpy value difference of the dry steam humidification portion.
The total energy cost calculation module 320 is further configured to obtain heating energy consumption according to the heating unit enthalpy energy cost and the target enthalpy difference of the heating portion, and obtain cooling energy consumption according to the cooling unit enthalpy energy cost and the target enthalpy difference of the surface cooler.
The control module 330 is configured to control operation of the process air conditioning system according to a process mode corresponding to a lower one of the first total energy cost and the second total energy cost.
Preferably, the temperature and humidity control device further includes a base determining module 340, where the base determining module 340 is configured to determine a unit moisture energy cost of high-pressure micro mist humidification, a unit enthalpy energy cost of dry steam humidification, and a unit enthalpy energy cost of refrigeration and cooling according to a current cost dimension.
The application adopts the process air conditioning system with the dual-mode humidifying process mode, each working condition adopts the humidifying process mode with lower total energy cost, thereby providing assistance for enterprises to reduce the operation cost and carbon emission, and compared with the traditional single-humidifying process scheme, the scheme ensures the energy consumption optimization of the process air conditioning system; the application can calibrate the unit energy cost coefficient of each process treatment part in the process air conditioning system aiming at different process air conditioning systems, and ensure the energy consumption optimization of each process air conditioning system on the basis of ensuring the universality of the technical scheme; in addition, the application distinguishes the energy consumption targets of economic cost dimension or carbon emission cost dimension, thereby adopting different unit energy cost coefficients at different stages and being more flexibly applicable to the long-term energy consumption control of the process air conditioning system.
While certain specific embodiments of the application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.
Claims (6)
1. The temperature and humidity control method of the process air conditioning system is characterized in that the process air conditioning system comprises a high-pressure micro-mist humidifying part and a dry steam humidifying part, and the temperature and humidity control method comprises the following steps:
collecting a plurality of real-time air parameters of an exhaust fresh air mixing part of the process air conditioning system, wherein the plurality of real-time air parameters comprise an air enthalpy value of mixed air, a mixed air ball temperature and a mixed air moisture content;
respectively calculating a first total energy cost under a micro-mist humidification process mode and a second total energy cost under a steam humidification process mode based on the current working condition of the process air conditioning system and the real-time air parameter, wherein the high-pressure micro-mist humidification part is in a working state in the micro-mist humidification process mode, and the dry steam humidification part is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state;
controlling the operation of the process air conditioning system according to a process mode corresponding to the lower one of the first total energy cost and the second total energy cost;
the first total energy cost comprises high-pressure micro-mist humidifying energy consumption, and the high-pressure micro-mist humidifying energy consumption is obtained according to the unit moisture content energy cost of high-pressure micro-mist humidifying and the target moisture content difference value of the high-pressure micro-mist humidifying part; the second total energy cost comprises dry steam humidification energy consumption, and the dry steam humidification energy consumption is obtained according to the unit enthalpy value energy cost of dry steam humidification and the target enthalpy value difference value of the dry steam humidification part;
and the first total energy cost and the second total energy cost further comprise heating energy consumption or refrigeration cooling energy consumption; the heating energy consumption is obtained according to the unit enthalpy value energy cost of heating and the target enthalpy value difference value of the heating part; the refrigeration cooling energy consumption is obtained according to the unit enthalpy energy cost of refrigeration cooling and the target enthalpy difference value of the surface cooler.
2. The method of claim 1, wherein the unit moisture energy cost of the high pressure micro mist humidification, the unit enthalpy energy cost of the dry steam humidification, the unit enthalpy energy cost of the heating, and the unit enthalpy energy cost of the cooling are determined by current cost dimensions including an economic cost dimension and a carbon emission cost dimension.
3. The method for controlling temperature and humidity of a process air conditioning system according to claim 1, wherein if the current working condition is a cooling and dehumidifying working condition and the cooling requirement is greater than the dehumidifying requirement, a micro mist humidifying process mode is adopted.
4. The method for controlling temperature and humidity of a process air conditioning system according to claim 1, wherein if the current working condition is a cooling and humidifying working condition, a micro mist humidifying process mode is adopted.
5. The temperature and humidity control device of the process air conditioning system is characterized by comprising a high-pressure micro-mist humidifying part and a dry steam humidifying part, wherein the temperature and humidity control device comprises an acquisition module, a total energy cost calculation module and a control module;
the acquisition module is used for acquiring a plurality of real-time air parameters of an exhaust fresh air mixing part of the process air conditioning system, wherein the plurality of real-time air parameters comprise an air enthalpy value of mixed air, a temperature of a mixed air ball and a moisture content of the mixed air;
the total energy cost calculation module is used for calculating a first total energy cost under a micro-mist humidification process mode and a second total energy cost under a steam humidification process mode respectively based on the current working condition of the process air conditioning system and the real-time air parameter, wherein the high-pressure micro-mist humidification part is in a working state in the micro-mist humidification process mode, and the dry steam humidification part is in a non-working state; in the steam humidification process mode, the high-pressure micro-mist humidification part is in a non-working state, and the dry steam humidification part is in a working state;
the control module is used for controlling the operation of the process air conditioning system according to a process mode corresponding to the lower one of the first total energy cost and the second total energy cost;
the first total energy cost calculates high-pressure micro-mist humidifying energy consumption according to the unit moisture energy cost of high-pressure micro-mist humidifying and the target moisture content difference value of the high-pressure micro-mist humidifying part, and the second total energy cost calculates dry steam humidifying energy consumption according to the unit enthalpy energy cost of dry steam humidifying and the target enthalpy difference value of the dry steam humidifying part;
and the first total energy cost and the second total energy cost further comprise heating energy consumption or refrigeration cooling energy consumption; the heating energy consumption is obtained according to the unit enthalpy value energy cost of heating and the target enthalpy value difference value of the heating part; the refrigeration cooling energy consumption is obtained according to the unit enthalpy energy cost of refrigeration cooling and the target enthalpy difference value of the surface cooler.
6. The process air conditioning system of claim 5, further comprising a base determination module configured to determine a unit moisture energy cost of the high pressure micro mist humidification, a unit enthalpy energy cost of the dry vapor humidification, a unit enthalpy energy cost of the heating, and a unit enthalpy energy cost of the cooling according to a current cost dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210420278.9A CN114704924B (en) | 2022-04-20 | 2022-04-20 | Temperature and humidity control method and device for process air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210420278.9A CN114704924B (en) | 2022-04-20 | 2022-04-20 | Temperature and humidity control method and device for process air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114704924A CN114704924A (en) | 2022-07-05 |
| CN114704924B true CN114704924B (en) | 2023-11-10 |
Family
ID=82174514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210420278.9A Active CN114704924B (en) | 2022-04-20 | 2022-04-20 | Temperature and humidity control method and device for process air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114704924B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115899888A (en) * | 2022-11-15 | 2023-04-04 | 河南中烟工业有限责任公司 | Method and system for completely recycling waste heat of flash steam of condensed water in tobacco making in cigarette factory |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211854259U (en) * | 2020-03-25 | 2020-11-03 | 浙江中烟工业有限责任公司 | Air conditioning system humidifying device |
| CN111895585A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN111895587A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN113587220A (en) * | 2021-06-29 | 2021-11-02 | 福建佰时德能源科技有限公司 | Control method of combined air-conditioning box |
-
2022
- 2022-04-20 CN CN202210420278.9A patent/CN114704924B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211854259U (en) * | 2020-03-25 | 2020-11-03 | 浙江中烟工业有限责任公司 | Air conditioning system humidifying device |
| CN111895585A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN111895587A (en) * | 2020-08-14 | 2020-11-06 | 珠海格力电器股份有限公司 | Air conditioning system control method |
| CN113587220A (en) * | 2021-06-29 | 2021-11-02 | 福建佰时德能源科技有限公司 | Control method of combined air-conditioning box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114704924A (en) | 2022-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109489402B (en) | Control method of heat pump for dehumidification and drying | |
| Finocchiaro et al. | Advanced solar assisted desiccant and evaporative cooling system equipped with wet heat exchangers | |
| CN103499137B (en) | The refrigeration control method of a kind of machine room, Apparatus and system | |
| CN201387087Y (en) | Energy-saving low-temperature high-humidity air supply air-conditioning unit | |
| CN101000163A (en) | Dehumidifying air conditioning system | |
| CN1862121A (en) | Temp and moisture independent control type air-conditioning system using solution as auxiliary working substance | |
| CN107355954A (en) | A kind of all-fresh air thermostatic constant wet control system and method | |
| CN101363648B (en) | Air conditioner system for independently controlling temperature and humidity and refrigeration/dehumidification method | |
| CN109539437B (en) | Open type solar direct-drive air conditioning system with independent temperature and humidity control function and working method thereof | |
| CN107477738A (en) | Low-temp radiating type idle call fresh air dehumidifying system and its control method | |
| CN114704924B (en) | Temperature and humidity control method and device for process air conditioning system | |
| CN206113121U (en) | A fresh air dehumidification unit for reviewing humidity independent control air conditioning system | |
| CN107477796A (en) | Low-temp radiating type idle call fresh air dehumidifying system control method | |
| CN105737302A (en) | Central air-conditioning based on dry air energy | |
| CN108981096A (en) | Control method, the device and system of full working scope air-treatment unit | |
| CN101713573B (en) | Dehumidifying air conditioning system | |
| CN205980700U (en) | Responsibility is dodged all to heat of high -efficient heat recovery | |
| CN211146814U (en) | Natural cold source air treatment system with humidification function | |
| CN201277663Y (en) | Air conditioner system with humidity and temperature independently controlled | |
| CN216977021U (en) | Solution dehumidification type indirect evaporation fresh air handling unit based on solar drive | |
| CN110207317A (en) | A kind of energy-saving control method for central air conditioner, device | |
| CN105509158A (en) | Intelligent air conditioner with humidity regulation function | |
| CN216384414U (en) | Direct evaporative cooling and mechanical refrigeration combined type air conditioning system | |
| CN211551862U (en) | Energy-saving dehumidification purification air conditioning system | |
| CN210663175U (en) | Intelligent control and anti-condensation system applied to radiation air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |