CN105605748B - A kind of air-conditioning system geomantic omen joint debugging control method and system - Google Patents

A kind of air-conditioning system geomantic omen joint debugging control method and system Download PDF

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Publication number
CN105605748B
CN105605748B CN201610146682.6A CN201610146682A CN105605748B CN 105605748 B CN105605748 B CN 105605748B CN 201610146682 A CN201610146682 A CN 201610146682A CN 105605748 B CN105605748 B CN 105605748B
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air
temperature
fan
rotation speed
room temperature
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CN105605748A (en
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徐晓宁
游秀华
李巧
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GUANGDONG DYIAW TECHNOLOGY Co.,Ltd.
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Guangzhou University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The present invention relates to filed of air conditioning, and in particular to a kind of air-conditioning system geomantic omen joint debugging control method and system, the system include: controller, water valve adjuster, Fan Regulation device, surface-cooler and temperature and air quality detecting device;When being handled using this system room air, change surface-cooler heat transfer effect by adjusting chilled-water flow and air output simultaneously, the temperature of room air and air quality information are collected and are fed back in controller by detection device, controller is according to checking information generation instruction while adjusting surface air cooler water valve aperture and surface air cooler air output, by room temperature control in given range.Using the adjusting method surface air cooler pressure fan energy consumption and air-conditioner water system operation energy consumption can be effectively reduced, improve central air conditioner system operation stability, reduce regulating time, promote user's comfort under the premise of meeting indoor environment requirement.

Description

A kind of air-conditioning system geomantic omen joint debugging control method and system
Technical field
The present invention relates to filed of air conditioning, and in particular to a kind of air-conditioning system geomantic omen joint debugging control method and system.
Background technique
The annual developmental research reporting statistics of Chinese architecture energy conservation show end equipment of central air conditioner system operation energy consumption Higher than chilled water pump, cooling water pump and cooling tower energy consumption, the ratio for accounting for system energy consumption is up to 1/3, and central air-conditioning system is effectively reduced The operation energy consumption of system end-equipment is significant to air conditioner system energy saving.
Surface-cooler is the important component of end equipment of central air conditioner system, and outdoor air is through the wet place of surface-cooler heat It is sent into user room after reason, meets user's comfort requirement, changing the water flow for flowing through surface-cooler and air output can be with Change the air supply parameter of heat exchanger output;If can also change while changing end-equipment surface-cooler chilled-water flow Air quantity of the unsteady flow through heat exchanger, can obtain better energy-saving effect and comfort;But due to adjusting surface-cooler simultaneously Chilled-water flow and air quantity are a complicated heat transfer process, and mutual degree of coupling is high, realize that physics decoupling control is very tired Difficulty is substantially generally used in engineer application and is sent using single parameter mode is adjusted at present for the coupling for avoiding adjustment process Air quantity is constant, adjusts the mode of the chilled-water flow of surface-cooler;In operation at part load, by adjusting surface-cooler Chilled-water flow change air supply parameter, under the premise of meeting user's given temperature, reduce chilled-water flow, and then reduce empty Adjusting system refrigeration host computer energy consumption and water pump conveying energy consumption.
Theoretical analysis shows that there is surface-cooler heat transfer process saturation nonlinearity characteristic to work as water if air output is constant After flow increases to a certain extent, surface-cooler wind pushing air temperature is had little influence on;If water flow is constant, work as air stream After amount increases to a certain extent, air exit temp is also had little influence on, by the way of adjusting chilled-water flow, if equipment Saturation region is operated in, then adjusts that influence of the chilled-water flow to air supply parameter is slow, and regulating time is long, influences user's comfort; If chilled-water flow is reduced to linear zone, although air-conditioner water system transmission energy consumption can be reduced, it is likely to occur cooling supply Deficiency, and end-equipment chilled-water flow is frequently adjusted, operation not good for system stability will affect the performance of refrigeration host computer, Reduce efficiency.
Preceding to have addressed, the air output that adjusting flows through surface-cooler also can change surface-cooler air supply parameter;With tune It is different to save chilled-water flow, adjusts air output and pertains only to end-equipment itself, does not influence system other equipment and hydraulic pipeline is flat Weighing apparatus influences system stable operation smaller;In operation at part load, if controlling pressure fan, root using frequency control way According to similarity law, apparent energy-saving benefit can be obtained by reducing end-equipment air output;If shaping modes are proper, end is being adjusted While end equipment chilled-water flow, air output is also adjusted, the energy saving profit for reducing chilled-water flow can have both been obtained, can also obtain The energy saving profit of air output must be reduced, and system stability can be improved, reduces regulating time, promotes user's comfort.
It popularizes very much, adjusts simultaneously with control technology development, frequency control way as energy saving in running requires to improve Chilled-water flow and air output are the approach for further decreasing end-equipment operation energy consumption, improving system run all right.It is real This existing target, key are to seek suitable, feasible surface-cooler water flow and the air output of solving in the coupling of heat transfer process The adjusting method of problem.
Summary of the invention
In view of the foregoing drawbacks, it is an object of the invention to propose a kind of air-conditioning system geomantic omen joint debugging control method and system, It adjusts chilled-water flow simultaneously and air output is the way for further decreasing end-equipment operation energy consumption, improving system run all right Diameter.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of air-conditioning system geomantic omen joint debugging control method, includes the following steps:
1) initial parameter is set: including that given temperature T and temperature allow difference △ T in initial parameter, also set to Determine air quality parameters C, meets the minimum rotation speed of fan that air-supply requires;
2) starting adjusts freezing penstock and blower: the freezing penstock of air conditioner surface cooler is opened to the maximum into value, and And the rotation speed of fan of air conditioner surface cooler is opened to the maximum into value;
3) it detects and obtains room temperature Ts and indoor air quality Cs;
4) absolute value of the difference with regard to given temperature T and actual measurement room temperature Ts is Ta, and compares Ta and △ T and compare;
5) when Ta >=△ T: and room temperature Ts is surveyed more than or equal to given temperature T, then according to room temperature Ts's Difference adjusts freezing penstock until room temperature Ts is in given temperature T;
Further, the step 4) further includes step 6): as Ta < △ T, first keeping the current aperture of chilled water, later Rotation speed of fan is adjusted according to the difference of T and Ts, and whether detects the relationship between indoor air quality Cs and given air quality C For Cs >=C, when Cs < C then repeats the step, until maintaining current rotation speed of fan after Cs >=C.
Preferably, the step 4) further includes step 7): when Ta >=△ T, when actual measurement room temperature Ts is less than given temperature T, and rotation speed of fan is less than minimum speed, then adjusts chilled water valve opening according to the difference of (T- △ T) and Ts.
Further, the step 4) further includes step 8): when Ta >=△ T, when actual measurement room temperature Ts is less than given temperature T is spent, rotation speed of fan is greater than or equal to minimum speed, then adjusts blower according to the difference of given temperature T and actual measurement room temperature Ts and turn Speed, and detect whether the relationship between indoor air quality Cs and given air quality C is Cs >=C, when Cs < C then repeats this Step, until maintaining current rotation speed of fan after Cs >=C.
A kind of air-conditioning system geomantic omen joint debugging control system, comprising:
Master controller: allow difference △ T and given temperature T for set temperature, and there is data collection operation and refer to Enable sending function;
Water valve adjuster: for receiving and executing the instruction of master controller, and have the function of adjusting water valve aperture;
Fan Regulation device: for receiving and executing the instruction of master controller, and there is the function for continuously adjusting rotation speed of fan Energy;
Surface-cooler: temperature is generated by handling the wind of the chilled water that water valve exports and blower output and is delivered to In air-conditioned room;
Temperature and air detecting device: the state of temperature and air quality in real-time collecting air-conditioned room, and data are anti- It should be into master controller, in order to which master controller timely generates suitable control data;
Above system and method for the system are when adjusting temperature, using adjusting chilled-water flow and air-supply simultaneously The mode of amount, this measure are to further decrease end-equipment operation energy consumption, improve system run all right.
Detailed description of the invention
Fig. 1 is the air-conditioning system geomantic omen joint debugging control system block diagram of one embodiment of the present invention;
Fig. 2 is the flow chart of the air-conditioning system geomantic omen joint debugging control method of one embodiment of the present of invention.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Referring to shown in attached drawing, a kind of air-conditioning system geomantic omen joint debugging control method and system include the following steps:
1) initial parameter is set: including that given temperature T and temperature allow difference △ T in initial parameter, also set to Determine air quality parameters C, and rotation speed of fan is low gear;
2) starting adjusts freezing penstock and blower: the freezing penstock of air conditioner surface cooler is opened to the maximum into value, and And the rotation speed of fan of air conditioner surface cooler is opened to the maximum into value;
3) it detects and obtains room temperature Ts and indoor air quality Cs;
4) absolute value of the difference with regard to given temperature T and actual measurement room temperature Ts is Ta, and compares Ta and △ T;
5) when Ta >=△ T: and room temperature Ts is surveyed more than or equal to given temperature T, then according to room temperature Ts's Difference adjusts freezing penstock until room temperature Ts is in given temperature T.
6): when Ta < △ T: the current aperture of chilled water is first kept, rotation speed of fan is adjusted according to the difference of T and Ts later, until Detect Ta in the range of △ T.
7): when Ta >=△ T, it is less than given temperature T when surveying room temperature Ts, and rotation speed of fan is less than minimum speed, Chilled water valve opening is then adjusted according to the difference of (T- △ T) and Ts.
8): when Ta >=△ T, being less than given temperature T when surveying room temperature Ts, and rotation speed of fan is more than or equal to minimum Revolving speed then adjusts rotation speed of fan according to the difference of given temperature T and actual measurement room temperature Ts.
Preferably, the step 1) also sets given air quality parameters C;It also detects and obtains in the step 3) Indoor air quality Cs.
Further, the step 6) is as Ta < △ T: the current aperture of chilled water is first kept, later according to the difference of T and Ts Rotation speed of fan is adjusted, and detects whether the relationship between indoor air quality Cs and given air quality C is Cs >=C, works as Cs < C then repeats the step, until maintaining current rotation speed of fan after Cs >=C.Further, when step 8) Ta >=△ T, work as reality It surveys room temperature Ts and is less than given temperature T, rotation speed of fan is greater than or equal to minimum speed, then according to given temperature T and actual measurement room The difference of interior temperature Ts adjusts rotation speed of fan, and whether detects the relationship between indoor air quality Cs and given air quality C For Cs >=C, when Cs < C then repeats the step, until maintaining current rotation speed of fan after Cs >=C.
Single argument negative feedback mode adjusts chilled-water flow and air output respectively, obtains better comfort and energy conservation effect Fruit, when chilled-water flow reaches 60% or more of design discharge, the heat exchange amount of surface exchanger has had reached metered flow 80% or so, it is smaller to continue growing influence of the chilled-water flow to supply air temperature, and supply air temperature changes chilled-water flow It is accordingly relatively slow, chilled-water flow is preferentially adjusted, is control foundation with room temperature, room temperature is made to be maintained at the target temperature of permission It spends in range;Then the characteristics of changing fast response time to air output using surface air cooler heat exchange amount adjusts air output, makes Indoor Temperature Degree reaches target temperature.Can in a certain range, can using single argument negative feedback mode adjust respectively chilled-water flow and Air output obtains better comfort and energy-saving effect.
Referring to attached drawing 2, a kind of air-conditioning system geomantic omen joint debugging control system, comprising:
Master controller: allow difference △ T and given temperature T for set temperature, and there is data collection operation and refer to Enable sending function;
Water valve adjuster: for receiving and executing the instruction of master controller, and have the function of adjusting water valve aperture;
Fan Regulation device: for receiving and executing the instruction of master controller, and there is the function for continuously adjusting rotation speed of fan Energy;
Surface-cooler: temperature is generated by handling the wind of the chilled water that water valve exports and blower output and is delivered to In air-conditioned room;
Temperature and air detecting device: the state of temperature and air quality in real-time collecting air-conditioned room, and data are anti- Should be into master controller, in order to which master controller timely generates suitable control data, the combination of these devices makes entirely System can also be adjusted indoor air quality while having temp regulating function, and adjust the adjustment of equipment Mode is variable feedback adjust automatically, and equipment works at once after inputting user's ideal value, to make indoor temperature effect and sky Makings amount can allow user to feel comfortable.
Embodiment 1
As shown in Figs. 1-2, air-conditioning system geomantic omen joint debugging control method and system, system includes: master controller, for setting Temperature allows difference △ T and given temperature T, and has data collection operation and instruction sending function;Water valve adjuster, is used for The instruction of master controller is received and executed, order adjustment water valve aperture is executed;Fan Regulation device, for receiving and executing main control The instruction of device, for adjusting rotation speed of fan;Surface-cooler passes through the chilled water of processing water valve output and the wind of blower output To generate temperature and be delivered in air-conditioned room;Temperature and air detecting device, temperature and air matter in real-time collecting air-conditioned room The state of amount, and data are reacted in master controller, in order to which master controller timely generates suitable control data;? In, step 1) is setting initial parameter: 1) initial parameter is arranged: including that given temperature T and temperature permit in initial parameter Perhaps difference △ T also sets given air quality parameters C, and rotation speed of fan is low gear, these parameters need to input main control In device, master controller calculates the parameter for controlling other devices on the basis of this parameter;Starting is adjusted cold in step 2) Freeze penstock and blower: the freezing penstock of air conditioner surface cooler is opened to the maximum into value, and by air conditioner surface cooler Rotation speed of fan opens to the maximum value, and surface-cooler starts to export cold air with this;Step 3) detects and obtains room temperature Ts and room Interior air quality Cs, actually detected to the room temperature situation for currently needing to freeze, the step is by being set to interior and connecting It is realized with the temperature of master controller and detection of air quality module;Step 4) with regard to given temperature T and actual measurement room temperature Ts it Absolute value of the difference is Ta, and compares Ta and △ T, and master controller determines whether practical temperature difference Ta is in by comparison Ta and △ T In the range of temperature franchise △ T;In step 5) as Ta >=△ T, and room temperature Ts is surveyed more than or equal to given temperature T, master controller then adjust freezing penstock at room temperature Ts according to the difference order water valve adjuster of room temperature Ts In given temperature T, next step is entered if being less than;In step 6) as Ta < △ T, the current aperture of chilled water is first kept, it Master controller adjusts rotation speed of fan according to the difference of T and Ts afterwards, and detects between indoor air quality Cs and given air quality C Relationship whether be Cs >=C, when Cs < C then repeats the step, until maintaining current rotation speed of fan after Cs >=C, otherwise repeat this Step;In step 7), when Ta >=△ T, when actual measurement room temperature Ts is less than given temperature T, and rotation speed of fan be less than it is minimum Revolving speed, master controller then adjust chilled water valve opening according to the difference of (T- △ T) and Ts, and the master controller cycle detection step Until (T- △ T) is matched with Ts;Step 8): when Ta >=△ T, when actual measurement room temperature Ts is less than given temperature T, rotation speed of fan is big In or equal to minimum speed, then rotation speed of fan is adjusted according to the difference of given temperature T and actual measurement room temperature Ts, and detect interior Whether the relationship between air quality Cs and given air quality C is Cs >=C, when Cs < C then repeats the step, until Cs >=C After maintain current rotation speed of fan because in this case actual measurement room temperature Ts it is lower than given temperature T, will use family and feel cold It is cold, so master controller meeting cycle detection is up to the temperature difference between Ts and T is in the range of allowing difference △ T in the step Afterwards, and current state is maintained;The regulative mode of chilled water valve opening and rotation speed of fan in system is all made of PI mode and adjusts.
When chilled-water flow reaches 60% or more of design discharge, the heat exchange amount of surface exchanger has had reached specified stream 80% or so of amount, it is smaller to continue growing influence of the chilled-water flow to supply air temperature, and supply air temperature is to chilled-water flow Variation is corresponding relatively slow;Under same operating condition, adjusts surface exchanger air output and be affected to surface air cooler output load, and Supply air temperature is very fast to air output variation response speed;Therefore, at certain operational conditions, it can use supply air temperature to cold The difference for freezing water flow and air output variation and response speed, designs suitable control strategy, using single argument negative-feedback side Formula reduces the coupling influence that chilled-water flow and air output exchange heat to surface exchanger, and indoor load adjusting is divided into two ranks Section, preferentially adjusts chilled-water flow, is control foundation with room temperature, room temperature is made to be maintained at the target temperature range of permission It is interior;Then the characteristics of changing fast response time to air output using surface air cooler heat exchange amount adjusts air output, reaches room temperature Target temperature.Chilled-water flow and air output can be adjusted using single argument negative feedback mode respectively in a certain range, Obtain better comfort and energy-saving effect.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within Within protection scope of the present invention.

Claims (4)

1. a kind of air-conditioning system geomantic omen joint debugging control method, includes the following steps:
1) initial parameter is set: including that given temperature T and temperature allow difference △ T in initial parameter, also sets given sky Gas mass parameter C meets the minimum rotation speed of fan that air-supply requires;
2) starting adjusts freezing penstock and blower: the freezing penstock of air conditioner surface cooler being opened to the maximum value, and will The rotation speed of fan of air conditioner surface cooler opens to the maximum value;
3) it detects and obtains room temperature Ts and indoor air quality Cs;
4) absolute value of the difference with regard to given temperature T and actual measurement room temperature Ts is Ta, and compares Ta and △ T and compare;
It is characterized by:
5) when Ta >=△ T: and room temperature Ts is surveyed more than or equal to given temperature T, then according to the difference of room temperature Ts Freezing penstock is adjusted until room temperature Ts is in given temperature T.
2. joint debugging control method in air-conditioning system geomantic omen according to claim 1, which is characterized in that the step 4) further includes Step 6): as Ta < △ T, first keeping the current aperture of chilled water, adjusts rotation speed of fan according to the difference of T and Ts later, and examine Whether the relationship surveyed between indoor air quality Cs and given air quality C is Cs >=C, when Cs < C then repeats the step, until Current rotation speed of fan is maintained after Cs >=C.
3. joint debugging control method in air-conditioning system geomantic omen according to claim 1, which is characterized in that the step 4) further includes Step 7): when Ta >=△ T, it is less than given temperature T when surveying room temperature Ts, and rotation speed of fan is less than minimum speed, then root Chilled water valve opening is adjusted according to the difference of (T- △ T) and Ts.
4. joint debugging control method in air-conditioning system geomantic omen according to claim 1, which is characterized in that the step 4) further includes Step 8): when Ta >=△ T, when actual measurement room temperature Ts is less than given temperature T, rotation speed of fan is greater than or equal to minimum speed, then Rotation speed of fan is adjusted according to the difference of given temperature T and actual measurement room temperature Ts, and detects indoor air quality Cs and given sky Whether the relationship between makings amount C is Cs >=C, when Cs < C then repeats the step, until maintaining current rotation speed of fan after Cs >=C.
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