CN104677180A - Cooling tower energy saving system and method - Google Patents
Cooling tower energy saving system and method Download PDFInfo
- Publication number
- CN104677180A CN104677180A CN201510115949.0A CN201510115949A CN104677180A CN 104677180 A CN104677180 A CN 104677180A CN 201510115949 A CN201510115949 A CN 201510115949A CN 104677180 A CN104677180 A CN 104677180A
- Authority
- CN
- China
- Prior art keywords
- cooling tower
- particle
- pid
- adaptive value
- temperature sensor
- 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.)
- Pending
Links
Abstract
The invention relates to a cooling tower energy saving system and method. The cooling tower energy saving system comprises a temperature sensor, a variable frequency water pump and a PID (proportion integration differentiation) temperature regulator, wherein the temperature sensor is arranged a water inlet and outlet opening of a cooling tower, and transmits detected temperature signals to the PID temperature regulator, and the temperature regulator is electrically connected with the variable frequency water pump. The cooling tower energy saving system and the cooling tower energy saving method have the advantages that the temperature sensor is used for monitoring the inlet and outlet water temperature of the cooling tower, the rotating speed of the variable frequency water pump is controlled through the PID temperature regulator, the inlet and outlet water temperature difference of the cooling tower is controlled through controlling the water flow rate, and the unnecessary energy source waste is avoided.
Description
Technical field
The invention belongs to cooling tower technical field, be specifically related to a kind of cooling tower energy conserving system and method.
Background technology
Factory's design of air conditioning is centralized air-conditioning, its main process equipment adopts water-cooling case-type air-conditioner main frame, air-conditioning secondary refrigerant system is designed to a circulating pump system, and in order to ensure the normal operation of air-conditioning, the refrigerating medium circulatory system is that design runs with maximum load all the time at air-conditioning.But in fact, air-conditioning, in the running of a year, only has part-time to be run when maximum load.System works when Low Temperature Difference, large discharge for a long time, can cause a large amount of energy dissipations.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of cooling tower energy conserving system and method, utilize the Inlet and outlet water temperature of temperature sensor measurement cooling tower, utilize PID adjuster to control Inlet and outlet water temperature and remain a constant temperature difference, avoid unnecessary waste.
Technical scheme of the present invention is: a kind of cooling tower energy conserving system, comprise temperature sensor, variable frequency pump and PID thermoregulator, temperature sensor is located at the going out of cooling tower, water inlet, the temperature signal detected is passed to PID thermoregulator by temperature sensor, thermoregulator electrical connection variable frequency pump.A kind of cooling tower power-economizing method, is characterized in that: comprise the steps: step one: initialize population, random position and the speed producing all particles, and determines the P of particle
tand G
t; Step 2: by particle successively assignment to the parameter K of PID thermoregulator
p, K
i, K
d; Step 3: the simulink model of PID thermoregulator energy saving in running system, obtains the performance indications that this group parameter is corresponding; Step 4: performance indications corresponding for this group parameter are delivered to the adaptive value as this particle in PSO, and judge whether to meet end condition, meet and just exit algorithm, obtain optimal solution, do not meet and perform step 5; Step 5: to each particle, by the optimal location P that its adaptive value and this particle live through
tadaptive value compare, if good, then it can be used as current P
t; Step 6: to each particle, by the optimal location G that its adaptive value and whole population live through
tadaptive value compare, as better, then it can be used as current G
t; Step 7: the more speed of new particle and position, and return step 2.In described step 4, end condition is that iterations exceedes default maximum iteration time.
The present invention has following good effect: the Inlet and outlet water temperature utilizing temperature sensor monitors cooling tower, is controlled and the rotating speed of variable frequency pump by PID thermoregulator, and by control discharge, the Inlet and outlet water temperature difference of controlled cooling model tower, avoids unnecessary energy waste.
Accompanying drawing explanation
Fig. 1 is the structure chart of the specific embodiment of the invention;
Fig. 2 is the algorithm flow chart of the specific embodiment of the invention.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is as the effect of the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part and operation principle, manufacturing process and operation using method etc., be described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
The present invention is made up of temperature sensor, PID thermoregulator and variable frequency pump, cooling tower and working equipment, and variable frequency pump, by rising to the top of cooling tower from working equipment hot water out, is the power of whole recirculated water.Here working equipment can be the equipment of central air-conditioning or other needs coolings, below for central air-conditioning.
Temperature sensor is located at cooling tower respectively and promotes the porch of water pump or air-conditioner water outlet mouth goes out, another is contained in air conditioning cooling water import department or cooling tower delivery port, the thermotonus of air-conditioner water outlet mouth goes out the number of air conditioner load, using the regulation and control parameter of the temperature of entry and exit as PID thermoregulator.
When leaving condenser water mouth temperature is on the low side, illustrate that working equipment load reduces, PID thermoregulator is by regulating the rotating speed of water pump, reduce the flow entering the water of cooling tower, after cooling tower cooling, be back to air-conditioner host, accordingly, the water of water pump lifting reduces, and the water entering working equipment also reduces.After working equipment load reduces, according to temperature adjusting, the cooling water entering working equipment reduces, and ensures that the Inlet and outlet water temperature difference of working equipment remains unchanged substantially.
The present invention utilizes pid algorithm to realize the temp. control function of PID thermoregulator, and utilizes particle cluster algorithm to carry out optimize PID algorithm parameter.By the process of particle cluster algorithm optimize PID as Fig. 2, the bridge connected between particle cluster algorithm with simulink model is the adaptive value (i.e. the performance indications of control system) that particle (i.e. pid control parameter) and this particle are corresponding.Optimizing process is as follows: PSO produces population (can be primary group, also can be the population after upgrading), by the particle number of times assignment in this population to the parameter K of PID controller
p, K
i, K
d, then the simulink model of operation control system, obtains the performance indications that this group parameter is corresponding, and these performance indications are delivered to the adaptive value as this particle in PSO, finally judges whether to exit algorithm.
Particle cluster algorithm realizes: the speed of particle in search volume and position are determined according to following formula:
V
t+1=ωv
t+c
1r
1(P
t-x
t)+c
2r
2(G
t-x
t) （1）
x
t+1=x
t+v
t+1 （2）
Wherein, x represents the position of particle; V represents the speed of particle; ω is inertial factor; c
1, c
2for aceleration pulse; r
1, r
2for the random number that [0,1] is interval; P
tit is the optimal location that particle searches up to now; G
tit is the optimal location that whole population searches up to now.
PSO algorithm optimization pid algorithm process flow is as follows:
(1) initialize population, random position and the speed producing all particles, and determine the P of particle
tand G
t.
(2) and by particle successively assignment to the parameter K of PID controller
p, K
i, K
d.
(3) the simulink model of PID operation control system, obtains the performance indications that this group parameter is corresponding;
(4) performance indications corresponding for this group parameter are delivered to the adaptive value as this particle in PSO, and judge whether to meet end condition (being generally default maximum iteration time and adaptive value lower limit), exit algorithm, obtain optimal solution.
(5) to each particle, by the optimal location P that its adaptive value and this particle live through
tadaptive value compare, if good, then it can be used as current P
t.
(6) to each particle, by the optimal location G that its adaptive value and whole population live through
tadaptive value compare, as better, then it can be used as current G
t.
(7) by formula v
t+1=ω v
t+ c
1r
1(P
t-x
t)+c
2r
2(G
t-x
t) and x
t+1=x
t+ v
t+1the more speed of new particle and position.And return step (2).
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (3)
1. a cooling tower energy conserving system, it is characterized in that: comprise temperature sensor, variable frequency pump and PID thermoregulator, temperature sensor is located at the going out of cooling tower, water inlet, and the temperature signal detected is passed to PID thermoregulator by temperature sensor, thermoregulator electrical connection variable frequency pump.
2. a kind of cooling tower power-economizing method according to claim 1, is characterized in that: comprise the steps:
Step one: initialize population, random position and the speed producing all particles, and determine the P of particle
tand G
t;
Step 2: by particle successively assignment to the parameter K of PID thermoregulator
p, K
i, K
d;
Step 3: the simulink model of PID thermoregulator energy saving in running system, obtains the performance indications that this group parameter is corresponding;
Step 4: performance indications corresponding for this group parameter are delivered to the adaptive value as this particle in PSO, and judge whether to meet end condition, meet and just exit algorithm, obtain optimal solution, do not meet and perform step 5;
Step 5: to each particle, by the optimal location P that its adaptive value and this particle live through
tadaptive value compare, if good, then it can be used as current P
t;
Step 6: to each particle, by the optimal location G that its adaptive value and whole population live through
tadaptive value compare, as better, then it can be used as current G
t;
Step 7: the more speed of new particle and position, and return step 2.
3. cooling tower power-economizing method according to claim 2, is characterized in that: in described step 4, end condition is that iterations exceedes default maximum iteration time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115949.0A CN104677180A (en) | 2015-03-17 | 2015-03-17 | Cooling tower energy saving system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115949.0A CN104677180A (en) | 2015-03-17 | 2015-03-17 | Cooling tower energy saving system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104677180A true CN104677180A (en) | 2015-06-03 |
Family
ID=53312555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510115949.0A Pending CN104677180A (en) | 2015-03-17 | 2015-03-17 | Cooling tower energy saving system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104677180A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942999A (en) * | 2015-06-30 | 2015-09-30 | 苏细调 | Novel punching drill |
| CN105953602A (en) * | 2016-04-25 | 2016-09-21 | 珠海格力电器股份有限公司 | Energy-saving control method and device used for cooling tower and air-conditioning system |
| CN105972784A (en) * | 2016-06-30 | 2016-09-28 | 上海大众祥源动力供应有限公司 | Temperature regulation system for cooling water for centrifugal unit and method |
| CN107525430A (en) * | 2017-09-19 | 2017-12-29 | 上海大众祥源动力供应有限公司 | A kind of cooling tower frequency conversion fan control system and method |
| CN109460092A (en) * | 2018-08-11 | 2019-03-12 | 西华大学 | Device parameter control system and method in a kind of streptonigrin compound extraction process |
| CN107525430B (en) * | 2017-09-19 | 2024-05-03 | 上海大众祥源动力供应有限公司 | Cooling tower variable frequency fan control system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328694A (en) * | 1989-06-26 | 1991-02-06 | Mitsui Petrochem Ind Ltd | Regulating method for temperature of cooling tower |
| CN101403582A (en) * | 2008-11-14 | 2009-04-08 | 沪东重机有限公司 | Automatic temperature control apparatus of large cooling column group |
| CN202630791U (en) * | 2012-03-31 | 2012-12-26 | 哈尔滨电机厂有限责任公司 | Automatic cooling water control device for air cooler of generator at hydropower station |
| CN103453783A (en) * | 2013-08-19 | 2013-12-18 | 河海大学 | Cooling tower driven and operated by stored energy power source |
| CN203443473U (en) * | 2013-07-17 | 2014-02-19 | 深圳百时得能源环保科技有限公司 | Open type industrial cooling water system energy efficiency control device |
| CN204007206U (en) * | 2014-08-26 | 2014-12-10 | 淄博百时得能源环保科技有限公司 | Energy-conservation scale protective type steam power plant enclosed cooling recirculation system |
-
2015
- 2015-03-17 CN CN201510115949.0A patent/CN104677180A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0328694A (en) * | 1989-06-26 | 1991-02-06 | Mitsui Petrochem Ind Ltd | Regulating method for temperature of cooling tower |
| CN101403582A (en) * | 2008-11-14 | 2009-04-08 | 沪东重机有限公司 | Automatic temperature control apparatus of large cooling column group |
| CN202630791U (en) * | 2012-03-31 | 2012-12-26 | 哈尔滨电机厂有限责任公司 | Automatic cooling water control device for air cooler of generator at hydropower station |
| CN203443473U (en) * | 2013-07-17 | 2014-02-19 | 深圳百时得能源环保科技有限公司 | Open type industrial cooling water system energy efficiency control device |
| CN103453783A (en) * | 2013-08-19 | 2013-12-18 | 河海大学 | Cooling tower driven and operated by stored energy power source |
| CN204007206U (en) * | 2014-08-26 | 2014-12-10 | 淄博百时得能源环保科技有限公司 | Energy-conservation scale protective type steam power plant enclosed cooling recirculation system |
Non-Patent Citations (1)
| Title |
|---|
| 湛锋 等: "基于改进粒子群优化算法的PID参数整定", 《继电器》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104942999A (en) * | 2015-06-30 | 2015-09-30 | 苏细调 | Novel punching drill |
| CN105953602A (en) * | 2016-04-25 | 2016-09-21 | 珠海格力电器股份有限公司 | Energy-saving control method and device used for cooling tower and air-conditioning system |
| CN105972784A (en) * | 2016-06-30 | 2016-09-28 | 上海大众祥源动力供应有限公司 | Temperature regulation system for cooling water for centrifugal unit and method |
| CN107525430A (en) * | 2017-09-19 | 2017-12-29 | 上海大众祥源动力供应有限公司 | A kind of cooling tower frequency conversion fan control system and method |
| CN107525430B (en) * | 2017-09-19 | 2024-05-03 | 上海大众祥源动力供应有限公司 | Cooling tower variable frequency fan control system and method |
| CN109460092A (en) * | 2018-08-11 | 2019-03-12 | 西华大学 | Device parameter control system and method in a kind of streptonigrin compound extraction process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108662735B (en) | Energy-saving optimization control system and method for terminal equipment of central air-conditioning system | |
| CN104633857B (en) | Air conditioner energy-saving optimization control method and device | |
| CN204730411U (en) | Central air conditioning cooling water system energy-saving controller | |
| CN105674489B (en) | A kind of optimal control method and system of water pump of central air conditioner | |
| CN105020845A (en) | Linkage energy-saving control system and method for air conditioning system | |
| CN105571073B (en) | A kind of subway station air-conditioner water system frequency conversion control energy-saving method | |
| CN104677180A (en) | Cooling tower energy saving system and method | |
| CN106051959A (en) | Energy conservation optimization system for central air conditioner | |
| CN105004002A (en) | Energy saving control system and energy saving control method used for central air conditioner cooling water system | |
| CN204902127U (en) | Terminal coordinated control's of air conditioner water system and air conditioner economizer | |
| CN103047740A (en) | Method for reducing water flow of air conditioning system and dynamic temperature difference flow regulating valve | |
| CN107401806A (en) | Main frame and refrigerating water pump comprehensive energy efficiency lifting control method in central air conditioning freezing station | |
| CN113701321B (en) | Energy-saving frequency conversion control method for central air-conditioning water pump | |
| CN109654887B (en) | Circulating water cooling system and automatic control method thereof | |
| CN102506529B (en) | Control method of single-stage refrigerant system and optimizer | |
| CN104214911A (en) | Control method of compound PLC (programmable logic controller) air conditioning automatic control system in textile mill | |
| CN104697388A (en) | Energy-saving cooling tower control system and method | |
| CN104949192A (en) | Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater | |
| CN112728724B (en) | Energy adjusting mode of central air conditioning system | |
| CN107588504B (en) | Pump-valve integrated control device and control method for air-conditioning water system | |
| CN203258800U (en) | Central air conditioner dynamic tracking energy-saving management control system | |
| CN105571089A (en) | Energy-saving intelligent ecological central air conditioning device | |
| CN203964267U (en) | Central air-conditioning Auto-matching load energy conserving system | |
| CN105240993A (en) | Fine energy-saving control system of central air conditioner and achieving method of fine energy-saving control system | |
| CN203274139U (en) | Intelligent control system based on air conditioner cooling water system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
|
| WD01 | Invention patent application deemed withdrawn after publication |