CN202254120U - High-performance and energy-saving control system for central air conditioner in large supermarket - Google Patents
High-performance and energy-saving control system for central air conditioner in large supermarket Download PDFInfo
- Publication number
- CN202254120U CN202254120U CN2011203192645U CN201120319264U CN202254120U CN 202254120 U CN202254120 U CN 202254120U CN 2011203192645 U CN2011203192645 U CN 2011203192645U CN 201120319264 U CN201120319264 U CN 201120319264U CN 202254120 U CN202254120 U CN 202254120U
- Authority
- CN
- China
- Prior art keywords
- temperature sensor
- sensor
- air
- energy
- conditioning box
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to the technical field of electricity, and in particular relates to a high-performance and energy-saving control system for a central air conditioner in a large supermarket. The high-performance and energy-saving control system comprises a cold water set consisting of a condenser and an evaporator, a cooling water system consisting of a cooling tower, a cooling water pump, a cooling tower controller, a temperature sensor, a dew point temperature sensor and a humidity sensor which are connected with one another, a chilled water system consisting of a chilled water pump, a chilled machine room controller, a pressure sensor, a temperature sensor and a flow sensor, an air conditioning box system consisting of an air conditioning box, an air conditioning box controller, a temperature sensor and a carbon dioxide sensor, and an exchanger. Compared with the prior art, the high-performance and energy-saving control system has the advantage that: a running mode in which the whole system can keep the highest efficiency is realized by analyzing real-time monitored data returned by the sensors and adjusting frequencies of elements of the cold water set, the chilled water system, the cooling water system and the air conditioning box system, so that an energy-saving effect can be achieved.
Description
Technical field
The utility model relates to technical field of electricity, the energy-efficient control of specifically a kind of large supermarket central air-conditioning system.
Background technology
In the large supermarket, the energy consumption proportion of central air-conditioning is very big in modern times, accounts for about 30% of total electricity consumption.How improving the utilization rate of electric energy, is present urgent problem.
General design principles for central air-conditioning is: the chilled water design temperature difference is the 5-7 degree; The cooling water design temperature difference is the 4-6 degree; Under the fixing situation of flow system flow, supply backwater temperature difference is the 1-3 degree, and to have about 50% be to consume at the high frequency of water pump to move to system energy consumption like this.According to the operation characteristic of water pump, promptly the flow of water pump is directly proportional with rotating speed, square being directly proportional of lift and rotating speed, shaft power be directly proportional with the cube of rotating speed, and the water pump frequency drops to 40Hz from 50Hz, just can practice thrift 50% electric energy in theory.
Therefore, a kind of energy-efficient control of large supermarket's central air-conditioning system that can regulating frequency of design.
Summary of the invention
The purpose of the utility model is the deficiency that overcomes prior art, and a kind of energy-efficient control of large supermarket's central air-conditioning system that can regulating frequency is provided.
In order to achieve the above object; The utility model comprises the handpiece Water Chilling Units that contains condenser and evaporimeter; Contain the cooling water system that cooling tower, cooling water pump, cooling tower controller, temperature sensor, dew point temperature sensor are connected with humidity sensor; The chilled water system that contains chilled water pump, refrigerator room controller, pressure sensor, temperature sensor and flow sensor; The air conditioner box system and the switch that contain air-conditioning box, air-conditioning box controller, temperature sensor and carbon dioxide sensor; It is characterized in that: switch is connected with several air-conditioning box controllers with control centre computer, refrigerator room controller, cooling tower controller respectively; The refrigerator room controller respectively with chilled water system in pressure sensor, temperature sensor and flow sensor be connected; The cooling tower controller respectively with cooling water system in temperature sensor, dew point temperature sensor and humidity sensor be connected, each air-conditioning box controller respectively with this air conditioner box system in temperature sensor be connected with carbon dioxide sensor; The output of cooling tower is connected with the input of condenser; The output of condenser is connected with the input of cooling water pump; The cooling water delivery side of pump is connected with the input of cooling tower; The output of evaporimeter is connected with the input of chilled water pump, and the chilled water delivery side of pump is connected with the input of air-conditioning box, and the output of air-conditioning box is connected with the input of evaporimeter.
The ICP/IP protocol of standard is adopted in communication between described switch, cooling water system, chilled water system and the air conditioner box system.
The utility model is compared with prior art; The real-time monitor data of passing back through analyte sensors; Regulate the components and parts frequency of handpiece Water Chilling Units, chilled water system, cooling water system and air conditioner box system, realize that whole system keeps the operational mode of peak efficiency, thereby realize energy-conservation effect.
Description of drawings
Fig. 1 is that the circuit of the utility model connects sketch map.
Fig. 2 is that the water system of the utility model connects sketch map.
The specific embodiment
Combine accompanying drawing that the utility model is done further describes at present.
Referring to Fig. 1 and Fig. 2; The utility model comprises the handpiece Water Chilling Units that contains condenser and evaporimeter; Contain the cooling water system that cooling tower, cooling water pump, cooling tower controller, temperature sensor, dew point temperature sensor are connected with humidity sensor; The chilled water system that contains chilled water pump, refrigerator room controller, pressure sensor, temperature sensor and flow sensor contains the air conditioner box system and the switch of air-conditioning box, air-conditioning box controller, temperature sensor and carbon dioxide sensor.Switch is connected with several air-conditioning box controllers with control centre computer, refrigerator room controller, cooling tower controller respectively; The refrigerator room controller respectively with chilled water system in pressure sensor, temperature sensor and flow sensor be connected; The cooling tower controller respectively with cooling water system in temperature sensor, dew point temperature sensor and humidity sensor be connected, each air-conditioning box controller respectively with this air conditioner box system in temperature sensor be connected with carbon dioxide sensor; The output of cooling tower is connected with the input of condenser; The output of condenser is connected with the input of cooling water pump; The cooling water delivery side of pump is connected with the input of cooling tower; The output of evaporimeter is connected with the input of chilled water pump, and the chilled water delivery side of pump is connected with the input of air-conditioning box, and the output of air-conditioning box is connected with the input of evaporimeter.The ICP/IP protocol of standard is adopted in communication between switch, cooling water system, chilled water system and the air conditioner box system.
The utility model is when work; Cooling water system judges that by industrial Programmable Logic Controller leaving water temperature that the cooling tower temperature sensor obtains adds the dew-point temperature whether numerical value behind three degree obtain greater than dew point temperature sensor, if, after then delaying time ten minutes; Blower fan of cooling tower of automatic deloading; If not, after then delaying time ten minutes, load a blower fan of cooling tower automatically.Cooling water system carries out pid control algorithm by industrial Programmable Logic Controller, and given cooling water house steward leaving water temperature is also regulated the cooling water pump frequency.
Chilled water system by industrial Programmable Logic Controller after obtaining water-flow signal; Carry out pid control algorithm; Given refrigerator leaving water temperature and power control air conditioner energy saving algorithm are also regulated the refrigerator load and are judged according to following program and load refrigerator or off-load refrigerator: when a refrigerator operation, chilled water supply backwater temperature difference greater than 3.5 ℃ and refrigerator load output smaller or equal to 90% the time; Delay time after ten minutes, regulate the refrigerator load and export 65% to; When the operation of refrigerator, chilled water supply backwater temperature difference greater than 3.5 ℃ and refrigerator load output greater than 90% the time, delay time after ten minutes, the load that loads a refrigerator and regulate an original refrigerator exports 65% to; When the operation of two refrigerators and chilled water supply backwater temperature difference more than or equal to 2.5 ℃ and during less than 3.5 ℃, delay time after five minutes, the load of adjusting refrigerator exports 65% to; When the operation of two refrigerators, chilled water supply backwater temperature difference more than or equal to 2 ℃ and when being 65% less than 3 ℃ and two refrigerator loads outputs, delay time after five minutes, off-load is a refrigerator wherein; When the operation of refrigerator, chilled water supply backwater temperature difference more than or equal to 1 ℃ and during less than 3 ℃, delay time after five minutes, the load of adjusting refrigerator exports 65 to; When the operation of refrigerator, chilled water supply backwater temperature difference during, delay time after five minutes refrigerator of off-load less than 1 ℃.Chilled water system is carried out pid control algorithm by industrial Programmable Logic Controller, and given chilled water house steward leaving water temperature and refrigeration system minimum discharge are also regulated the chilled water pump frequency.
Air conditioner box system is by industrial Controlled by Programmable Controller and realize that the frequency adjustment of pressure fan, new valve area are regulated and the chilled water coil valve opening is regulated.
Claims (2)
1. the energy-efficient control of large supermarket's central air-conditioning system; Comprise the handpiece Water Chilling Units that contains condenser and evaporimeter; Contain the cooling water system that cooling tower, cooling water pump, cooling tower controller, temperature sensor, dew point temperature sensor are connected with humidity sensor; The chilled water system that contains chilled water pump, refrigerator room controller, pressure sensor, temperature sensor and flow sensor; The air conditioner box system and the switch that contain air-conditioning box, air-conditioning box controller, temperature sensor and carbon dioxide sensor; It is characterized in that: switch is connected with several air-conditioning box controllers with control centre computer, refrigerator room controller, cooling tower controller respectively; The refrigerator room controller respectively with chilled water system in pressure sensor, temperature sensor and flow sensor be connected; The cooling tower controller respectively with cooling water system in temperature sensor, dew point temperature sensor and humidity sensor be connected, each air-conditioning box controller respectively with this air conditioner box system in temperature sensor be connected with carbon dioxide sensor; The output of cooling tower is connected with the input of condenser; The output of condenser is connected with the input of cooling water pump; The cooling water delivery side of pump is connected with the input of cooling tower; The output of evaporimeter is connected with the input of chilled water pump, and the chilled water delivery side of pump is connected with the input of air-conditioning box, and the output of air-conditioning box is connected with the input of evaporimeter.
2. the energy-efficient control of a kind of large supermarket central air-conditioning according to claim 1 system is characterized in that: the ICP/IP protocol of standard is adopted in the communication between described switch, cooling water system, chilled water system and the air conditioner box system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203192645U CN202254120U (en) | 2011-08-29 | 2011-08-29 | High-performance and energy-saving control system for central air conditioner in large supermarket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203192645U CN202254120U (en) | 2011-08-29 | 2011-08-29 | High-performance and energy-saving control system for central air conditioner in large supermarket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254120U true CN202254120U (en) | 2012-05-30 |
Family
ID=46115353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203192645U Expired - Lifetime CN202254120U (en) | 2011-08-29 | 2011-08-29 | High-performance and energy-saving control system for central air conditioner in large supermarket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202254120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276761A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Control system of air conditioner water system device |
| CN105674489A (en) * | 2016-01-27 | 2016-06-15 | 深圳市奥宇节能技术股份有限公司 | Optimal control method and system of central air conditioner water pump |
| CN112702886A (en) * | 2019-10-22 | 2021-04-23 | 华为技术有限公司 | Liquid cooling heat dissipation system, heat dissipation control method and control chip |
-
2011
- 2011-08-29 CN CN2011203192645U patent/CN202254120U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276761A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Control system of air conditioner water system device |
| CN105674489A (en) * | 2016-01-27 | 2016-06-15 | 深圳市奥宇节能技术股份有限公司 | Optimal control method and system of central air conditioner water pump |
| CN105674489B (en) * | 2016-01-27 | 2019-02-05 | 深圳市奥宇节能技术股份有限公司 | A kind of optimal control method and system of water pump of central air conditioner |
| CN112702886A (en) * | 2019-10-22 | 2021-04-23 | 华为技术有限公司 | Liquid cooling heat dissipation system, heat dissipation control method and control chip |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102338448B (en) | High-efficiency energy-saving control system for central air conditioner of large-sized supermarket | |
| CN104633857B (en) | Air conditioner energy-saving optimization control method and device | |
| CN103277875B (en) | Energy-saving control system for refrigeration plant room | |
| CN103868190B (en) | A kind of energy-saving control method being applicable to central air conditioning cooling water system | |
| CN204730411U (en) | Central air conditioning cooling water system energy-saving controller | |
| CN113739371B (en) | Central air conditioning system based on cloud cooperation and control method thereof | |
| CN102374605A (en) | Automatic optimizing energy-saving technology and system for central air-conditioning water system | |
| CN105987478B (en) | Control method for frequency conversion air conditioner, control device and convertible frequency air-conditioner | |
| CN104197446A (en) | Dynamic double-cold-source pre-cooling energy-saving air conditioning system | |
| CN202648063U (en) | Central air-conditioner energy efficiency optimization control and management system | |
| CN212720195U (en) | Cooling water system control device based on system overall energy efficiency ratio COP is best | |
| CN110940061A (en) | Central air conditioner control method and system | |
| CN203518120U (en) | Energy-saving control system for central air conditioner refrigeration station | |
| CN202254120U (en) | High-performance and energy-saving control system for central air conditioner in large supermarket | |
| CN203464410U (en) | Energy-saving device for controlling heating and cooling of central air conditioner | |
| CN203893368U (en) | Self-adaption throttling control equipment for cooling water pump of central air-conditioning water-chilling unit | |
| CN203274139U (en) | Intelligent control system based on air conditioner cooling water system | |
| CN210441402U (en) | Automatic control device of air conditioning system | |
| CN202675533U (en) | Intelligent control device for central air conditioner | |
| CN104713208A (en) | Efficient centrifugal water cooling unit output energy saving adjusting system and method | |
| CN110230867B (en) | Operation control method and device of air conditioner | |
| CN203024338U (en) | Energy-saving control device of central air conditioner and central air conditioner | |
| CN202216463U (en) | CHW(chilled water) temperature energy-saving control device for central water chillers | |
| CN203443258U (en) | Primary pump variable flow control system of refrigeration plant room | |
| CN204648533U (en) | The degenerative intelligent frequency-conversion central air conditioning system of a kind of backwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |