CN106679068B - The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer - Google Patents
The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer Download PDFInfo
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- CN106679068B CN106679068B CN201611077339.7A CN201611077339A CN106679068B CN 106679068 B CN106679068 B CN 106679068B CN 201611077339 A CN201611077339 A CN 201611077339A CN 106679068 B CN106679068 B CN 106679068B
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- water temperature
- water supply
- chilled water
- supply water
- host computer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- 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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of chilled water supply water temperature setting method of central air conditioner system refrigeration host computer and system, method includes: S1, before the refrigeration host computer starting of central air conditioner system, acquires the water temperature T of chilled water water pipeac；S2, the chilled water supply water temperature setting value T in conjunction with the refrigeration host computeraim, obtain the difference DELTA T between the water temperature of acquisition and the chilled water supply water temperature setting value；Δ T=Tac‑Taim；S3, the predetermined amount of time t for reaching the chilled water supply water temperature setting value in chilled water supply water temperaturelimitInterior, interval of delta t, the process values T of the chilled water supply water temperature in corresponding moment k is successively calculated by the following formula at preset timed intervalsset(k):(k=1,2 ... K)；Wherein, K is prefixed time interval section sum；S4, PID controller are according to the process values T for calculating the chilled water supply water temperature obtainedset(k) operation of the refrigeration host computer is controlled.The present invention realizes that the chilled water temperature of refrigeration host computer quickly and effectively reaches setting value, while the purpose realizing refrigeration host computer energy conservation and prolonging the service life.
Description
Technical field
The present invention relates to Air-condition system control technical field more particularly to a kind of freezings of central air conditioner system refrigeration host computer
Water supply water temperature setting method and system.
Background technique
In China, building energy consumption total amount in 2014 is more than 12.5 hundred million tons of standard coals, Zhan Shehui total energy consumption 30%.Central air-conditioning
Energy consumption accounts for building total energy consumption 65%, and wherein Air Conditioning Facilities energy consumption accounts for air conditioning energy consumption 70% or so.Therefore it is directed to central air-conditioning
The concern of the efficiency level of the booting of the capital equipment of system computer room, especially refrigeration host computer and run the period just seems especially heavy
It wants.
Traditional central air conditioner system host generallys use solid in the set temperature of the chilled water supply water temperature of booting period
Fixed setting value (such as 5 DEG C, 7 DEG C), this setting method are usually controlled by PID/feedback by system and are realized.Due to being opened from booting
Begin to chilled water water supply actual temperature the limited time (such as half an hour or 1 hour) for reaching setting value, while at the beginning of booting, freezing
Water temperature is close to room temperature in water pipe, and larger with setting value gap, this leads to the practical water supply water temperature of chilled water during PID control
Larger fluctuation can occur in design value close region, thereby reduce the efficiency level of booting period refrigeration host computer and use the longevity
Life.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of efficiency level and service life for improving refrigeration host computer
The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of central air conditioner system refrigeration host computer
Chilled water supply water temperature setting method, comprising the following steps:
S1, central air conditioner system refrigeration host computer starting before, acquire chilled water water pipe water temperature Tac；
S2, the chilled water supply water temperature setting value T in conjunction with the refrigeration host computeraim, obtain the water temperature T of acquisitionacAnd institute
State chilled water supply water temperature setting value TaimBetween difference DELTA T；
Wherein, Δ T=Tac-Taim；
S3, reach the chilled water supply water temperature setting value T in chilled water supply water temperatureaimPredetermined amount of time tlimitIt is interior,
Interval of delta t at preset timed intervals successively calculates the process of the chilled water supply water temperature in corresponding moment k by the following formula
Value Tset(k):
Wherein, K is prefixed time interval section sum；
S4, PID controller are according to the process values T for calculating the chilled water supply water temperature obtainedset(k) system is controlled
The operation of cold host.
Preferably, step S1 further include: the chilled water supply water temperature setting value T of the refrigeration host computer is setaim。
Preferably, in step S3, the chilled water supply water temperature reaches the predetermined of the chilled water supply water temperature setting value
Time period tlimitFor 30min-2h.
Preferably, in step S3, the prefixed time interval Δ t is 5-10min.
Preferably, in step S4, the refrigeration host computer operation, in the predetermined amount of time tlimitIt is interior, so that the freezing
Water supply water temperature gradually changes, the process values of the chilled water supply water temperature when prefixed time interval Δ t reaches the corresponding moment
Tset(k)。
Preferably, in step S4, in the predetermined amount of time tlimitAfterwards, the chilled water supply water temperature reaches the freezing
Water supply water temperature setting value Taim。
The present invention also provides a kind of chilled water supply water temperature setting devices of central air conditioner system refrigeration host computer, comprising:
Acquire the water temperature T of chilled water water pipeacTemperature collecting cell；
In conjunction with the chilled water supply water temperature setting value T of the refrigeration host computer of central air conditioner systemaim, obtain the water of acquisition
Warm TacWith the chilled water supply water temperature setting value TaimBetween difference DELTA T the first computing unit；Wherein, Δ T=Tac-
Taim；
Reach the chilled water supply water temperature setting value T in chilled water supply water temperatureaimPredetermined amount of time tlimitIt is interior, it presses
Prefixed time interval Δ t successively calculates the process values of the chilled water supply water temperature in corresponding moment k by the following formula
Tset(k) the second computing unit:
Wherein, K is prefixed time interval section sum；With
And
According to the process values T for calculating the chilled water supply water temperature obtainedset(k) the refrigeration host computer operation is controlled
PID controller；
The temperature collecting cell is connect with first computing unit, first computing unit and PID controller point
It is not connect with second computing unit.
Preferably, first computing unit and the second computing unit are integrated in a host computer.
Beneficial effects of the present invention: according to the chilled water pipe water temperature and chilled water supply water temperature before measurement refrigeration host computer booting
Difference between setting value obtains the chilled water supply water temperature process values (i.e. PID target value) of every certain time interval；Refrigeration
Host is run under PID controller control according to the chilled water supply water temperature process values of acquisition, to realize the cold of refrigeration host computer
Freeze coolant-temperature gage and quickly and effectively reach setting value, energy consumption is avoided to waste, reach energy saving purpose and extends refrigeration host computer service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the flow chart of the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer of the invention；
Fig. 2 is the chilled water supply water temperature change curve of refrigeration host computer after starting in the prior art；
Fig. 3 is chilled water supply water temperature change curve after the refrigeration host computer of setting method according to the invention starts；
Fig. 4 is the connection block diagram of the chilled water supply water temperature setting device of central air conditioner system refrigeration host computer of the invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
As shown in Figure 1, the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer of the invention, including with
Lower step:
S1, central air conditioner system refrigeration host computer starting before, acquire chilled water water pipe water temperature Tac.The water temperature of the acquisition
The chilled water supply water temperature for being refrigeration host computer when inactive.
After step S1 acquires water temperature further include: the chilled water supply water temperature setting value T of refrigeration host computer is setaim.The freezing
Water supply water temperature setting value is chilled water supply water temperature target value to be achieved after refrigeration host computer starting.
The setting of chilled water supply water temperature setting value is realized by operating on the operation panel of central air conditioner system.
S2, the chilled water supply water temperature setting value T in conjunction with refrigeration host computeraim, obtain the water temperature T of the chilled water water pipe of acquisitionac
With chilled water supply water temperature setting value TaimBetween difference DELTA T.
Wherein, Δ T=Tac-Taim。
S3, reach chilled water supply water temperature setting value T in chilled water supply water temperatureaimPredetermined amount of time tlimitIt is interior, by pre-
If time interval Δ t successively calculates the process values T of the chilled water supply water temperature in corresponding moment k by the following formulaset
(k):
Wherein, K is prefixed time interval section sum.
Above-mentioned steps S1-S3 Shi Jinhang before refrigeration host computer starts.
Alternatively, chilled water supply water temperature reaches the predetermined amount of time t of chilled water supply water temperature setting valuelimitFor
30min-2h.Prefixed time interval Δ t is can 5-10min, such as 5min, 10min.
For example, calculating the chilled water supply water temperature at the moment behind the interval at interval of 5min in predetermined amount of time 30min
Process values, then prefixed time interval section sum K be 6.The process of the chilled water supply water temperature of first time time interval 5min
ValueThe process values of the chilled water supply water temperature of second of time interval 5min
And so on, obtain the chilled water supply water temperature value at the correspondence moment in multiple time interval, the chilled water supply water temperature value
It also is the i.e. PID target value of control refrigeration host computer operation.
S4, PID controller are according to the process values T for calculating the chilled water supply water temperature obtainedset(k) refrigeration host computer is controlled
Operation.
Under operation, by the calculated result of step S3, chilled water supply water temperature reaches chilled water confession to refrigeration host computer
Coolant-temperature gage setting value TaimPredetermined amount of time tlimitIt is interior so that in prefixed time interval Δ t, when chilled water supply water temperature reach
Process values T when the corresponding momentset(k), to be freezed in a manner of progressive, so that chilled water supply water temperature gradually changes, until
Reach chilled water supply water temperature setting value Taim。
In predetermined amount of time tlimitAfterwards, chilled water supply water temperature reaches chilled water supply water temperature setting value Taim。
It realizes that the chilled water temperature of refrigeration host computer quickly and effectively reaches setting value by above-mentioned method, avoids energy consumption unrestrained
Take, reach energy saving purpose and extends refrigeration host computer service life.
With reference to shown in Fig. 2,3, the chilled water supply water temperature change curve of refrigeration host computer after respectively starting in the prior art
Scheme, chilled water supply water temperature change curve after the starting of the refrigeration host computer of setting method according to the invention；Horizontal axis is time t,
The longitudinal axis is temperature T.From Fig. 2,3 comparisons it is found that the chilled water supply water temperature change curve of the prior art is the (freezing of fixed value straight line
Water supply water temperature setting value TaimIt is constant)；Chilled water supply water temperature change curve in the present invention is changing value straight line, chilled water
Supply water temperature is from initial actual value TacIn predetermined amount of time tlimitThe process values T of interior corresponding chilled water supply water temperatureset(k) become
Change, until reaching chilled water supply water temperature setting value Taim, this method of operation makes inclined actual motion value fluctuation in operation more
It is small, it is more stable.
As shown in figure 4, the chilled water supply water temperature setting device of central air conditioner system refrigeration host computer of the invention, including temperature
Spend acquisition unit 10, the first computing unit 20, the second computing unit 30 and PID controller 40.Temperature collecting cell 10 and
The connection of one computing unit 20, the first computing unit 20 and PID controller 40 are connect with the second computing unit 30 respectively.
Wherein, temperature collecting cell 10 is used to acquire the water temperature T of chilled water water pipeac。
First computing unit 20 is used for the chilled water supply water temperature setting value of the refrigeration host computer 1 in conjunction with central air conditioner system
Taim, obtain the water temperature T of acquisitionacWith chilled water supply water temperature setting value TaimBetween difference DELTA T；Wherein, Δ T=Tac-Taim。
Second computing unit 30 is used to reach chilled water supply water temperature setting value T in chilled water supply water temperatureaimPre- timing
Between section tlimitInterior, interval of delta t at preset timed intervals successively calculates by the following formula in corresponding moment k chilled water for water temperature
The process values T of degreeset(k):
Wherein, K is prefixed time interval section sum.
PID controller 40 is according to the process values T for calculating the chilled water supply water temperature obtainedset(k) control refrigeration host computer 1 is transported
Row.
Preferably, the first computing unit 20 and the second computing unit 30 are integrated in a host computer, PID controller 40 with
Host computer connection.
The chilled water supply water temperature setting method of central air conditioner system refrigeration host computer of the invention can pass through the central air-conditioning
The chilled water supply water temperature setting device of cooling system host is realized.
To sum up, the chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer of the invention, in reality
The chilled water temperature of existing refrigeration host computer quickly and effectively reaches setting value, and energy consumption is avoided to waste, and reaches energy saving purpose and extends refrigeration
While host service life, without additionally addition hardware device, chilled water need to be only acquired before refrigeration host computer is switched on for water temperature
Degree, it is easy to operate easy-to-use and effective.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of chilled water supply water temperature setting method of central air conditioner system refrigeration host computer, comprising the following steps:
S1, central air conditioner system refrigeration host computer starting before, acquire chilled water water pipe water temperature Tac；
S2, the chilled water supply water temperature setting value T in conjunction with the refrigeration host computeraim, obtain the water temperature T of acquisitionacWith it is described cold
Freeze water supply water temperature setting value TaimBetween difference △ T；
Wherein, △ T=Tac-Taim；
It is characterized in that, further comprising the steps of:
S3, reach the chilled water supply water temperature setting value T in chilled water supply water temperatureaimPredetermined amount of time tlimitIt is interior, by pre-
If time interval △ t successively calculates the process values of the chilled water supply water temperature in corresponding moment k by the following formula
Tset(k):
Wherein, K is prefixed time interval section sum；
S4, PID controller are according to the process values T for calculating the chilled water supply water temperature obtainedset(k) the refrigeration master is controlled
The operation of machine.
2. the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer according to claim 1, feature
It is, step S1 further include: the chilled water supply water temperature setting value T of the refrigeration host computer is setaim。
3. the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer according to claim 1, feature
It is, in step S3, the chilled water supply water temperature reaches the predetermined amount of time t of the chilled water supply water temperature setting valuelimit
For 30min-2h.
4. the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer according to claim 1, feature
It is, in step S3, the prefixed time interval △ t is 5-10min.
5. the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer according to claim 1, feature
It is, in step S4, the refrigeration host computer operation, in the predetermined amount of time tlimitIt is interior, so that the chilled water supply water temperature
It gradually changes, the process values T of the chilled water supply water temperature when prefixed time interval △ t reaches the corresponding momentset(k)。
6. the chilled water supply water temperature setting method of central air conditioner system refrigeration host computer according to claim 5, feature
It is, in step S4, in the predetermined amount of time tlimitAfterwards, the chilled water supply water temperature reaches the chilled water supply water temperature
Setting value Taim。
7. a kind of chilled water supply water temperature setting device of central air conditioner system refrigeration host computer, comprising:
Acquire the water temperature T of chilled water water pipeacTemperature collecting cell；
In conjunction with the chilled water supply water temperature setting value T of the refrigeration host computer of central air conditioner systemaim, obtain the water temperature T of acquisitionac
With the chilled water supply water temperature setting value TaimBetween difference △ T the first computing unit；Wherein, △ T=Tac-Taim；
It is characterized by further comprising:
Reach the chilled water supply water temperature setting value T in chilled water supply water temperatureaimPredetermined amount of time tlimitIt is interior, by default
Time interval △ t successively calculates the process values T of the chilled water supply water temperature in corresponding moment k by the following formulaset
(k) the second computing unit:
Wherein, K is prefixed time interval section sum；And
According to the process values T for calculating the chilled water supply water temperature obtainedset(k) the PID control of the refrigeration host computer operation is controlled
Device processed；
The temperature collecting cell is connect with first computing unit, first computing unit and PID controller respectively with
The second computing unit connection.
8. the chilled water supply water temperature setting device of central air conditioner system refrigeration host computer according to claim 7, feature
It is, first computing unit and the second computing unit are integrated in a host computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611077339.7A CN106679068B (en) | 2016-11-28 | 2016-11-28 | The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer |
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| CN201611077339.7A CN106679068B (en) | 2016-11-28 | 2016-11-28 | The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer |
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| CN106679068B true CN106679068B (en) | 2019-07-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107560118B (en) * | 2017-09-12 | 2020-04-21 | 深圳达实智能股份有限公司 | Method and device for setting chilled water supply temperature of hospital refrigeration host |
| CN109654688B (en) * | 2018-12-21 | 2020-08-11 | 珠海格力电器股份有限公司 | Method and system for adjusting output power of air conditioning unit and air conditioning unit |
| CN110762732B (en) * | 2019-10-30 | 2021-05-07 | 南京亚派软件技术有限公司 | Chilled water supply water temperature setting method and system for refrigeration host of central air-conditioning system |
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| JPH11173631A (en) * | 1997-12-15 | 1999-07-02 | Shinko Kogyo Co Ltd | Air conditioner controller |
| JP2007139241A (en) * | 2005-11-16 | 2007-06-07 | Hitachi Ltd | Air conditioner |
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