CN106679019B - A kind of method and system of VAV system starting air balance - Google Patents
A kind of method and system of VAV system starting air balance Download PDFInfo
- Publication number
- CN106679019B CN106679019B CN201611117352.0A CN201611117352A CN106679019B CN 106679019 B CN106679019 B CN 106679019B CN 201611117352 A CN201611117352 A CN 201611117352A CN 106679019 B CN106679019 B CN 106679019B
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- air
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- terminal device
- vav terminal
- adjusting
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
-
- 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
-
- 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
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control 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
- F24F11/77—Control 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 by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
-
- 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
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Sustainable Development (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of method of VAV system starting air balance, this method is installed at the entrance branch wind pipe of each vav terminal device and manually adjusts air-valve；Debugging step of preceding execution is being used, by air-conditioner set power frequency operation, vav terminal device adjusting air valve standard-sized sheet and the dependent instruction for not receiving temperature adjusting control, adjusting manually adjust air-valve, make the air output of each vav terminal device close to not less than design value；It executes and operates normally rate-determining steps, first by air-conditioner set power frequency operation, the adjusting air valve standard-sized sheet of vav terminal device and the dependent instruction for not receiving temperature adjusting control, the air output of the required distribution obtained according to debugging step is the air-supply of each vav terminal device, when room corresponding to temperature sensor detects vav terminal device reaches set temperature, the dependent instruction that the adjusting air valve of vav terminal device receives temperature adjusting control adjusts its opening value, while air-conditioner set receives frequency control instruction.The present invention can solve some problems present in existing VAV system, and the later period is easy to maintain.
Description
Technical field
The present invention relates to the air conditioning system with variable with vav terminal device more particularly to the systems in startup stage wind
The method for measuring balance.
Background technique
At this stage, variable air volume system (VAV system) is not set in VAV-BOX entrance branch wind pipe manually adjusts air-valve, starts rank
The common control mode of section are as follows: it is in full-gear because being controlled by room temperature in the air-valve of VAV system start-up phase, VAV-BOX,
After running a period of time, after room temperature reaches setting value at room temperature, the air-valve of VAV-BOX is just gradually turned down.This controlling party
Formula will inevitably generate " advantageous circuit overcurrent, no because the air-valve of startup stage all VAV-BOX is in full-gear
The phenomenon that sharp circuit undercurrent ", the VAV-BOX air output in advantageous loop region is on the high side, but in unfavorable loop region
VAV-BOX air output is on the low side even without so as to cause still cannot after the room temperature experience some time of unfavorable loop region
Reach design value；Air-valve is manually adjusted since VAV-BOX entrance branch wind pipe is not set, VAV- is all leaned on by the air quantity of VAV-BOX
BOX air-valve is adjusted, and the VAV-BOX in advantageous circuit noise phenomenon bigger than normal can occurs because inlet pressure is excessive.These
The presence of problem seriously reduces the comfort in room, influences staff's mood and working efficiency.
Summary of the invention
The present invention proposes that a kind of VAV system starting air quantity is flat to solve above-mentioned the technical problems existing in the prior art
The method of weighing apparatus, includes the following steps:
Step 1: installing one at the entrance branch wind pipe of each vav terminal device and manually adjust air-valve；
Step 2: debugging step of preceding execution is being used, by air-conditioner set power frequency operation, vav terminal device adjusting air valve
Standard-sized sheet and the dependent instruction for not receiving temperature adjusting control, adjusting manually adjust air-valve, connect the air output of each vav terminal device
Closely it is not less than design value；
Step 3: executing and operate normally rate-determining steps, first by air-conditioner set power frequency operation, the adjusting air valve of vav terminal device
Standard-sized sheet and the dependent instruction for not receiving temperature adjusting control, the air output of the required distribution obtained according to debugging step is each
The air-supply of vav terminal device, when room corresponding to temperature sensor detects vav terminal device reaches set temperature, the end VAV
The dependent instruction that the adjusting air valve of end device receives temperature adjusting control adjusts its opening value, while air-conditioner set receives frequency conversion control
System instruction.
Meanwhile the present invention also protects the VAV system using the above method.
The present invention is manually adjusting air-valve in the setting of VAV-BOX entrance branch wind pipe, and the debugging stage may be implemented to each VAV-
The distribution air quantity of BOX is adjusted for the first time, and can improve the control characteristic of VAV-BOX air-valve in VAV operation, is effectively solved
Certainly advantageous circuit VAV-BOX noise problem bigger than normal；Simultaneously as the distribution air quantity at each moment is had recorded, it can be by air conditioner load point
Cloth feature distributes the air output of each region startup stage.Start air-conditioning system at any time, each VAV-BOX will not
The phenomenon that the problem of " undercurrent " occur, thoroughly solving system start-up phase " unfavorable circuit undercurrent ", the even use when room
When characteristic changes, relevant parameter can also be reset, to reach air balance, solves existing in the prior art ask
Topic, flexibility is good, is highly convenient for safeguarding.
Detailed description of the invention
Fig. 1 is that the present invention is mounted with the VAV system structure schematic diagram manually adjusted.
Fig. 2 is the method flow diagram of invention.
Fig. 3 is adjustment method flow chart.
Specific embodiment
Below with reference to specific attached drawing, the present invention is described in detail.
Fig. 1 is a schematic diagram of VAV system structure, and left side is computer room, is equipped with air-conditioner set 1 in computer room, right side is four
Air conditioning area P1-P4, each air conditioning area is interior to be equipped with a vav terminal device 3(VAV-BOX) shown in, in vav terminal device 3
Entrance branch wind pipe at be mounted with that manually adjusts an air-valve 2.
Fig. 2 is the method flow diagram of VAV system AV system starting air balance.
Air-valve is manually adjusted (such as Fig. 1 institute firstly the need of installing one at the entrance branch wind pipe in each vav terminal device
Show), a debugging step is needed to be implemented before system use, as shown in figure 3, in debugging step, air-conditioner set power frequency fortune
Row, sets full-gear for the adjusting air valve of vav terminal device and does not receive the control instruction of temperature controller, then calculate
And acquire the air output of each vav terminal device distribution required for different moments.
Specific acquisition step are as follows:
1, the opening value for manually adjusting air-valve is adjusted, the intake of the vav terminal device in each advantageous circuit is made to approach and omit
Greater than original design value, specifically can between the 100% ~ 110% of original design value value.
2, each vav terminal device is calculated in the air output L of different momentsntWith the total air output L of systemt, and preservation is recorded,
In, the calculation formula of intake is Lnt=Qnt/ (ρ * c* Δ T) * 3600, the calculation formula of original design value are Lt= L1t+ L2t+
L3t+…Lnt, in formula: the number of n --- VAV-BOX (or air conditioning area), T --- air-conditioning calculate moment, Lnt--- corresponding n, t
VAV-BOX air output under two Parameter Conditions, m3/h；Qnt--- the room conditioning sensible heat under corresponding two Parameter Conditions of n, t
Load, kW；The density of ρ --- air, kg/ m3, C --- air specific heat capacity, kJ/ (kg DEG C), Δ T --- supply air temperature difference,
℃; Lt--- for the total air output of VAV system of corresponding t moment, m3/h。
3, according to above-mentioned 2 record as a result, calculating the air output L of different moments each vav terminal devicentSystem is accounted for always to blow
Measure LtRatio Xnt= Lnt/ Lt, and record preservation.
4, according to above-mentioned ratio Xnt, in conjunction with the original day air output design value L of system, obtain different moments each vav terminal
The allocation air output G of devicent=L*Xnt, and record preservation；Gnt--- to correspond under two Parameter Conditions of n, t, by XntPoint
Air output with obtained each VAV-BOX, m3/ h, L --- day maximum air supply rate, m are designed for VAV system3/h。
5, it is the air-supply of each vav terminal device according to allocation air output, while monitors whether allocation air output surpasses
The maximum air supply rate for crossing the permission of vav terminal device is adjusted if being more than, and extra air output is distributed to the end other VAV
End device makes the air output of each vav terminal device be no more than the maximum quantity of wind value of its permission；
6, the distribution air output of different moments adjusted each vav terminal device is recorded.
After debugging, in normal use process, execute it is corresponding operate normally rate-determining steps, in startup stage and
By air-conditioner set power frequency operation, the adjusting air valve standard-sized sheet of vav terminal device and the dependent instruction for not receiving temperature adjusting control, root
The air output of the required distribution obtained according to debugging step is the air-supply of each vav terminal device, the temperature sensing in temperature controller
Device monitors room temperature, when room temperature reaches preset value, releases the uncontrolled shape of adjusting air valve of vav terminal device
State makes the adjusting air valve of vav terminal device receive the control instruction of temperature controller, adjusts corresponding air output, meanwhile, air-conditioning
Unit receives frequency variation signal and adjusts blower operating frequency.
For there are air-conditioning inner region cooling supply, outskirts to use the case where reheating type VAV-BOX is provides winter heating in system
When, in the period of outskirt heating, the VAV-BOX of outskirt heating need to maintain the minimum air quantity operation of setting always, to reduce reheating
The hot and cold amount of process is offset, and energy consumption is saved.These heating VAV-BOX do not need to execute acquisition step, remain preparatory always
The minimum air quantity of setting is run, and other VAV-BOX the method according to the invention without reheat function are gone to be debugged and be run,
But the total air output of system involved in debugging step and normal operation rate-determining steps need to subtract responsible outskirt heating
The occupied air output of end equipment.
The present invention realizes VAV system in the air balance of initial start stage by the above method, therefore the present invention is simultaneously
Also protection has used the VAV system of this method.
Embodiments above is only to the structure illustrated the present invention, and those skilled in the art are in the present invention
Design under can make various deformation and variation, these deformation and variation be included within protection scope of the present invention.
Claims (5)
1. a kind of method of VAV system starting air balance, which comprises the steps of:
Step 1: installing one at the entrance branch wind pipe of each vav terminal device and manually adjust air-valve；
Step 2: debugging step of preceding execution is being used, the adjusting air valve of air-conditioner set power frequency operation, vav terminal device is complete
The dependent instruction that temperature adjusts control is opened and do not received, the air output in each advantageous circuit is adjusted by manually adjusting air-valve, is acquired
And the ratio that air output of each vav terminal device in different moments accounts for the total air output of system is calculated, thus according to the ratio
The air output of each vav terminal device distribution required for different moments is calculated in value；
Step 3: executing and operate normally rate-determining steps, first by air-conditioner set power frequency operation, the adjusting air valve standard-sized sheet of vav terminal device
And not receiving the dependent instruction that temperature adjusts control, the air output of the required distribution obtained according to debugging step is each end VAV
End device air-supply, when room corresponding to temperature sensor detects vav terminal device reaches set temperature, air-conditioner set changes
Dependent instruction for converting operation, while the adjusting air valve reception temperature adjusting control of vav terminal device adjusts its opening value.
2. the method for VAV system starting air balance as described in claim 1, which is characterized in that the debugging step is specific
Include the following steps:
Step 10: air-conditioner set power frequency operation sets full-gear for the adjusting air valve of vav terminal device and does not receive temperature
The control instruction of controller；
Step 11: adjusting the opening value for manually adjusting air-valve, make the intake of the vav terminal device in each advantageous circuit is original to set
The 100%~110% of evaluation；
Step 12: calculating each vav terminal device in the total air output of air output and system of different moments, and record preservation；
Step 13: according to the record of step 12 as a result, the air output for calculating different moments each vav terminal device accounts for system and always blows
The ratio of amount, and record preservation；
Step 14: different moments each vav terminal dress is obtained in conjunction with the original day air output design value of system according to the ratio
The allocation air output set, and record preservation；
Step 15: being the air-supply of each vav terminal device according to allocation air output, while monitoring whether allocation air output surpasses
The maximum air supply rate for crossing the permission of vav terminal device is adjusted if being more than, and extra distribution air output is distributed to other
Vav terminal device makes the air output of each vav terminal device be no more than the maximum quantity of wind value of its permission；
Step 16: recording the distribution air output of different moments adjusted each vav terminal device.
3. the method for VAV system starting air balance as claimed in claim 2, which is characterized in that the normal operation control
Step includes:
Step 20: air-conditioner set power frequency operation is each end VAV according to the current time corresponding distribution air output adjusted
End device air-supply；
Step 21: setting full-gear for the adjusting air valve of vav terminal device and do not receive the control instruction of temperature controller；
Step 22: the temperature sensor in the temperature controller monitors room temperature, when room temperature reaches preset value, solution
Except the uncontrolled state of the adjusting air valve of vav terminal device, the adjusting air valve of the vav terminal device is made to receive temperature control
The control instruction of device adjusts corresponding air output, meanwhile, air-conditioner set receives frequency variation signal and adjusts blower operating frequency.
4. the method for VAV system starting air balance as claimed in claim 3, which is characterized in that set when in the VAV system
When having drive cooling supply in air-conditioning, outskirt using reheating type end equipment offer winter heating, it is responsible for the end equipment beginning of outskirt heating
Preset minimum air quantity operation is maintained eventually；Other vav terminal devices are in debugging step and operate normally in rate-determining steps
The total air output of involved system need to subtract the occupied air output of end equipment of responsible outskirt heating.
5. using the VAV system of above-mentioned any one claim the method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611117352.0A CN106679019B (en) | 2016-12-07 | 2016-12-07 | A kind of method and system of VAV system starting air balance |
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| CN201611117352.0A CN106679019B (en) | 2016-12-07 | 2016-12-07 | A kind of method and system of VAV system starting air balance |
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| CN106679019B true CN106679019B (en) | 2019-10-22 |
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| TWI716324B (en) | 2020-06-10 | 2021-01-11 | 群光電能科技股份有限公司 | Air conditioner and method for air volume balancing |
| CN112050380A (en) * | 2020-08-28 | 2020-12-08 | 中国建筑第八工程局有限公司 | VAV air conditioner debugging system based on wireless network and debugging method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205014553U (en) * | 2015-08-31 | 2016-02-03 | 上海宝冶集团有限公司 | House air supply system's amount of wind balanced structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3052981B2 (en) * | 1994-02-25 | 2000-06-19 | 有限会社田邊技研 | Air conditioning system |
| JPH08210695A (en) * | 1995-02-03 | 1996-08-20 | Yamatake Honeywell Co Ltd | Indicating method of load factor |
| JP3471627B2 (en) * | 1998-08-10 | 2003-12-02 | 株式会社山武 | VAV control system |
| JP3847114B2 (en) * | 2001-07-24 | 2006-11-15 | 三機工業株式会社 | Air conditioner operation method |
| US8793022B2 (en) * | 2010-02-26 | 2014-07-29 | Trane International, Inc. | Automated air source and VAV box association |
| CN103423844A (en) * | 2012-05-22 | 2013-12-04 | 梁文靖 | Air volume measurement balance system |
| US9976763B2 (en) * | 2015-04-21 | 2018-05-22 | Honeywell International Inc. | HVAC controller for a variable air volume (VAV) box |
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| CN205014553U (en) * | 2015-08-31 | 2016-02-03 | 上海宝冶集团有限公司 | House air supply system's amount of wind balanced structure |
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