CN104534628A - Control method and system for variable-frequency cooling water pump - Google Patents
Control method and system for variable-frequency cooling water pump Download PDFInfo
- Publication number
- CN104534628A CN104534628A CN201510039272.7A CN201510039272A CN104534628A CN 104534628 A CN104534628 A CN 104534628A CN 201510039272 A CN201510039272 A CN 201510039272A CN 104534628 A CN104534628 A CN 104534628A
- Authority
- CN
- China
- Prior art keywords
- temperature difference
- cooling water
- frequency
- actual
- water pump
- 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
Classifications
-
- 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
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method and system for a variable-frequency cooling water pump. The control method comprises the following steps: calculating target temperature difference according to preset temperature difference and practical load of a compressor; comparing the practical temperature difference with target temperature difference, wherein the practical temperature difference is calculated according to the temperature of outlet water and the temperature of inlet water of the variable-frequency cooling water pump; controlling the frequency of the variable-frequency cooling water pump according to the comparison result, thereby reducing the operation energy consumption of the variable-frequency cooling water pump and improving the operation efficiency of the air-conditioning system.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly, relate to a kind of control method and system of frequency conversion cooling water pump.
Background technology
Cooling water pump energy-saving and frequency-variable technology is applied more and more in central air conditioner system, but effect is but not quite similar.In traditional air-conditioning system, the mode of fixed difference difference variable-flow is mostly adopted to realize the energy-conservation of frequency conversion cooling water pump.Wherein, the foundation of fixed difference difference variable volume control mode is: when load reduces, the temperature difference reduces, and when load increases, the temperature difference increases.That is, when the load is decreasing, the temperature difference will reduce, and reduce signal and will control water pump deceleration, reduce discharge, make system according to fixed difference difference variable-flow operation according to the temperature difference detected, energy-conservation with the conveying realizing water system.But the energy-saving effect of this control mode is poor, air-conditioning system frequency conversion cooling water pump can be caused to run the problems such as power consumption operational efficiency that is higher and air-conditioning system is lower.
Summary of the invention
In view of this, the invention provides a kind of control method and system of frequency conversion cooling water pump, run to solve existing frequency conversion cooling water pump the problem that power consumption is higher and air-conditioning system operational efficiency is lower.
For achieving the above object, the invention provides following technical scheme:
A control method for frequency conversion cooling water pump, comprising:
Target temperature difference is calculated according to the default temperature difference and compressor actual load rate;
The actual temperature difference and target temperature difference are compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature;
The frequency of described frequency conversion cooling water pump is controlled according to comparative result.
Preferably, described basis is preset the temperature difference and actual load rate and is calculated target temperature difference and be specially:
According to formula Δ T
target=Δ T
preset. η
xcalculate target temperature difference, wherein, Δ T
targetfor target temperature difference, Δ T
in advance iffor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.
Preferably, described the process that the actual temperature difference and target temperature difference compare to be comprised:
By the described actual temperature difference and described target temperature difference and temperature deviation and compare;
And the difference of the described actual temperature difference and described target temperature difference and temperature deviation is compared.
Preferably, the described process controlling the frequency of described frequency conversion cooling water pump according to comparative result comprises:
When the described actual temperature difference is less than described target temperature difference and temperature deviation poor, the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency;
When the described actual temperature difference be greater than described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency;
When the described actual temperature difference is more than or equal to the difference of described target temperature difference and temperature deviation, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency.
Preferably, described compressor actual load rate be according to the actual current of described compressor and at full capacity electric current obtain.
A control system for frequency conversion cooling water pump, comprising:
Computing module, for calculating target temperature difference according to the default temperature difference and compressor actual load rate;
Comparison module, for the actual temperature difference and target temperature difference being compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature;
Control module, for controlling the frequency of described frequency conversion cooling water pump according to comparative result.
Preferably, described computing module is according to formula Δ T
target=Δ T
preset. η
xthe target temperature difference calculated, wherein, Δ T
targetfor target temperature difference, Δ T
presetfor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.
Preferably, described comparison module comprises:
First comparing unit, for by the described actual temperature difference and described target temperature difference and temperature deviation and compare;
Second comparing unit, for comparing the difference of the described actual temperature difference and described target temperature difference and temperature deviation.
Preferably, described control module comprises:
First control unit, during for being less than described target temperature difference and temperature deviation poor in the described actual temperature difference, the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency;
Second control unit, for be greater than in the described actual temperature difference described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency;
3rd control unit, for being more than or equal to the difference of described target temperature difference and temperature deviation in the described actual temperature difference, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency.
Preferably, described compressor actual load rate be according to the actual current of described compressor and at full capacity electric current obtain.
Compared with prior art, technical scheme provided by the present invention has the following advantages:
The control method of frequency conversion cooling water pump provided by the present invention and system, calculate target temperature difference according to the default temperature difference and compressor actual load rate; The actual temperature difference and target temperature difference are compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature; Control the frequency of described frequency conversion cooling water pump according to comparative result, to reduce the operation energy consumption of frequency conversion cooling water pump, improve the operational efficiency of air-conditioning system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The control method flow chart of the frequency conversion cooling water pump that Fig. 1 provides for one embodiment of the present of invention;
The graph of relation of the target temperature difference that Fig. 2 provides for one embodiment of the present of invention and compressor actual load rate;
The Control system architecture schematic diagram of the frequency conversion cooling water pump that Fig. 3 provides for an alternative embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
An embodiment provides a kind of control method of frequency conversion cooling water pump, this control method is applied to the frequency conversion cooling water pump of air-conditioner water system, and the flow chart of the method as shown in Figure 1, comprising:
S101: calculate target temperature difference according to the default temperature difference and compressor actual load rate;
In air-conditioner water system, although the reduction of cooling water flow can make the power consumption of cooling water pump decline, but, also the condensation temperature of handpiece Water Chilling Units can be caused to rise and power consumption increase, therefore, along with the change of air-conditioner set rate of load condensate, there is a best curve in the flow of cooling water or the cooling water Inlet and outlet water temperature difference, makes the total energy consumption of handpiece Water Chilling Units and water pump minimum.This best curve can use formula Δ T
target=Δ T
preset. η
xrepresent.
The relation curve of this best curve i.e. cooling water supply backwater temperature difference and target temperature difference and compressor actual load rate as shown in Figure 2.From full load and load factor 100%, along with the decline of rate of load condensate, the reduction of speed of cooling water supply backwater temperature difference is less, and the reduction of speed of cooling water flow is comparatively large, after rate of load condensate is lower than 50%, along with the decline of rate of load condensate, the reduction of speed of cooling water supply backwater temperature difference is comparatively large, and the reduction of speed of cooling water flow diminishes.
Based on this, the control method of frequency conversion cooling water pump provided by the invention, first according to presetting the temperature difference and compressor actual load rate calculating target temperature difference, then the frequency of frequency conversion cooling water pump is controlled according to the comparative result of the actual temperature difference and target temperature difference, to reduce the operation energy consumption of frequency conversion cooling water pump, improve the operational efficiency of air-conditioning system.
Wherein, be specially according to the process of the default temperature difference and actual load rate calculating target temperature difference:
According to formula Δ T
target=Δ T
preset. η
xcalculate target temperature difference, wherein, Δ T
targetfor target temperature difference, Δ T
in advance iffor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.Wherein, the actual load rate of compressor be according to the actual current of described compressor and at full capacity electric current obtain, particularly, the ratio of the actual current that the actual load rate of compressor equals compressor and electric current at full capacity.
S102: the actual temperature difference and target temperature difference are compared;
Wherein, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature, and namely the actual temperature difference equals the difference exporting water temperature and inlet water temperature.Further, outlet water temperature and inlet water temperature are obtained by the temperature sensor being arranged on frequency conversion cooling water pump export and import.
The process that the actual temperature difference and target temperature difference compare is comprised: by the described actual temperature difference and described target temperature difference and temperature deviation and compare; And the difference of the described actual temperature difference and described target temperature difference and temperature deviation is compared.
S103: the frequency controlling described frequency conversion cooling water pump according to comparative result.
The described process controlling the frequency of described frequency conversion cooling water pump according to comparative result comprises:
When the described actual temperature difference is less than described target temperature difference and temperature deviation poor, the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency, and namely controlled cooling model water pump reduces frequency;
When the described actual temperature difference be greater than described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency, and namely controlled cooling model water pump increases frequency;
When the described actual temperature difference is more than or equal to the difference of described target temperature difference and temperature deviation, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency, and namely controlled cooling model water pump keeps running frequency constant.
The control method of the frequency conversion cooling water pump that the present embodiment provides, calculates target temperature difference according to the default temperature difference and compressor actual load rate; The actual temperature difference and target temperature difference are compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature; Control the frequency of described frequency conversion cooling water pump according to comparative result, to reduce the operation energy consumption of frequency conversion cooling water pump, improve the operational efficiency of air-conditioning system.
An alternative embodiment of the invention provides a kind of control system of frequency conversion cooling water pump, be applied to the frequency conversion cooling water pump of air-conditioner water system, as shown in Figure 3, this control system comprises computing module 301, comparison module 302 and control module 303, wherein, computing module 301 is for calculating target temperature difference according to the default temperature difference and compressor actual load rate; Comparison module 302 is for comparing the actual temperature difference and target temperature difference, and the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature; Control module 303 is for controlling the frequency of described frequency conversion cooling water pump according to comparative result.
Wherein, computing module 301 is according to formula Δ T
target=Δ T
preset. η
xthe target temperature difference calculated, wherein, Δ T
targetfor target temperature difference, Δ T
presetfor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.
Comparison module 302 comprises the first comparing unit and the second comparing unit, the first comparing unit be used for by the described actual temperature difference and described target temperature difference and temperature deviation with compare; Second comparing unit is used for the difference of the described actual temperature difference and described target temperature difference and temperature deviation to compare.
Control module 303 comprises the first control unit, the second control unit and the 3rd control unit, and the first control unit is used for when the described actual temperature difference is less than described target temperature difference and temperature deviation poor, and the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency; Second control unit be used for the described actual temperature difference be greater than described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency; 3rd control unit is used for the difference being more than or equal to described target temperature difference and temperature deviation in the described actual temperature difference, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency.
The control system of the frequency conversion cooling water pump that the present embodiment provides, computing module calculates target temperature difference according to the default temperature difference and compressor actual load rate; The actual temperature difference and target temperature difference compare by comparison module; Control module controls the frequency of described frequency conversion cooling water pump according to comparative result, to reduce the operation energy consumption of frequency conversion cooling water pump, improves the operational efficiency of air-conditioning system.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a control method for frequency conversion cooling water pump, is characterized in that, comprising:
Target temperature difference is calculated according to the default temperature difference and compressor actual load rate;
The actual temperature difference and target temperature difference are compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature;
The frequency of described frequency conversion cooling water pump is controlled according to comparative result.
2. method according to claim 1, is characterized in that, the process that described basis presets the temperature difference and actual load rate calculating target temperature difference is specially:
According to formula Δ T
target=Δ T
preset. η
xcalculate target temperature difference, wherein, Δ T
targetfor target temperature difference, Δ T
in advance iffor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.
3. method according to claim 2, is characterized in that, describedly the process that the actual temperature difference and target temperature difference compare is comprised:
By the described actual temperature difference and described target temperature difference and temperature deviation and compare;
And the difference of the described actual temperature difference and described target temperature difference and temperature deviation is compared.
4. method according to claim 3, is characterized in that, the described process controlling the frequency of described frequency conversion cooling water pump according to comparative result comprises:
When the described actual temperature difference is less than described target temperature difference and temperature deviation poor, the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency;
When the described actual temperature difference be greater than described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency;
When the described actual temperature difference is more than or equal to the difference of described target temperature difference and temperature deviation, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency.
5. method according to claim 4, is characterized in that, described compressor actual load rate be according to the actual current of described compressor and at full capacity electric current obtain.
6. a control system for frequency conversion cooling water pump, is characterized in that, comprising:
Computing module, for calculating target temperature difference according to the default temperature difference and compressor actual load rate;
Comparison module, for the actual temperature difference and target temperature difference being compared, the described actual temperature difference calculates according to frequency conversion cooling water delivery side of pump water temperature and inlet water temperature;
Control module, for controlling the frequency of described frequency conversion cooling water pump according to comparative result.
7. system according to claim 6, is characterized in that, described computing module is according to formula Δ T
target=Δ T
preset. η
xthe target temperature difference calculated, wherein, Δ T
targetfor target temperature difference, Δ T
presetfor the default temperature difference, η is the actual load rate of compressor, x be not equal to 1 constant.
8. system according to claim 7, is characterized in that, described comparison module comprises:
First comparing unit, for by the described actual temperature difference and described target temperature difference and temperature deviation and compare;
Second comparing unit, for comparing the difference of the described actual temperature difference and described target temperature difference and temperature deviation.
9. system according to claim 8, is characterized in that, described control module comprises:
First control unit, during for being less than described target temperature difference and temperature deviation poor in the described actual temperature difference, the frequency controlling described frequency conversion cooling water pump is less than ongoing frequency;
Second control unit, for be greater than in the described actual temperature difference described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump is greater than ongoing frequency;
3rd control unit, for being more than or equal to the difference of described target temperature difference and temperature deviation in the described actual temperature difference, and the described actual temperature difference be less than or equal to described target temperature difference and temperature deviation and time, the frequency controlling described frequency conversion cooling water pump equals ongoing frequency.
10. system according to claim 9, is characterized in that, described compressor actual load rate be according to the actual current of described compressor and at full capacity electric current obtain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039272.7A CN104534628A (en) | 2015-01-26 | 2015-01-26 | Control method and system for variable-frequency cooling water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039272.7A CN104534628A (en) | 2015-01-26 | 2015-01-26 | Control method and system for variable-frequency cooling water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104534628A true CN104534628A (en) | 2015-04-22 |
Family
ID=52850207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510039272.7A Pending CN104534628A (en) | 2015-01-26 | 2015-01-26 | Control method and system for variable-frequency cooling water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104534628A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594996A (en) * | 2016-12-23 | 2017-04-26 | 新智能源系统控制有限责任公司 | District water supply variable flow control system based on meteorological condition |
| CN106679068A (en) * | 2016-11-28 | 2017-05-17 | 深圳达实智能股份有限公司 | Chilled water supply temperature setting method and system of main refrigeration machine of central air-conditioning system |
| CN106765955A (en) * | 2016-12-23 | 2017-05-31 | 新智能源系统控制有限责任公司 | Water supply variable temperature control system based on end comfort level |
| CN107664339A (en) * | 2017-10-23 | 2018-02-06 | 广东美的暖通设备有限公司 | Control method, device and the central air-conditioning of the cooling water pump of central air-conditioning |
| CN112378046A (en) * | 2020-11-24 | 2021-02-19 | 珠海格力电器股份有限公司 | Automatic diagnosis method of air conditioner and air conditioner |
| CN112432307A (en) * | 2020-11-17 | 2021-03-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN112432326A (en) * | 2020-11-19 | 2021-03-02 | 珠海格力电器股份有限公司 | Control method and device of refrigeration secondary pump, air conditioning system, medium and processor |
| CN113701400A (en) * | 2021-08-30 | 2021-11-26 | 广东纽恩泰新能源科技发展有限公司 | Control method for frequency conversion dual-combined heat pump module online |
| WO2024124904A1 (en) * | 2022-12-12 | 2024-06-20 | 广东美的白色家电技术创新中心有限公司 | Energy efficiency evaluation method, apparatus and system, device, and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073231A (en) * | 1983-09-30 | 1985-04-25 | Mitsubishi Electric Corp | Transfer control device for refrigerating and air- conditioning device |
| CN201059715Y (en) * | 2007-07-06 | 2008-05-14 | 北京时代嘉华环境控制科技有限公司 | Central air-conditioning freezing stations quality regulating control system |
| CN201129829Y (en) * | 2007-08-24 | 2008-10-08 | 深圳达实智能股份有限公司 | Central air conditioner changeable temperature difference energy-saving control system |
| CN202187896U (en) * | 2011-08-18 | 2012-04-11 | 唐山三友集团兴达化纤有限公司 | Energy-saving device of synchronous control type cooling circulating water pump |
| CN103868190A (en) * | 2012-12-12 | 2014-06-18 | 同方泰德国际科技(北京)有限公司 | Energy-saving control method suitable for central air-conditioning cooling water system |
-
2015
- 2015-01-26 CN CN201510039272.7A patent/CN104534628A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6073231A (en) * | 1983-09-30 | 1985-04-25 | Mitsubishi Electric Corp | Transfer control device for refrigerating and air- conditioning device |
| CN201059715Y (en) * | 2007-07-06 | 2008-05-14 | 北京时代嘉华环境控制科技有限公司 | Central air-conditioning freezing stations quality regulating control system |
| CN201129829Y (en) * | 2007-08-24 | 2008-10-08 | 深圳达实智能股份有限公司 | Central air conditioner changeable temperature difference energy-saving control system |
| CN202187896U (en) * | 2011-08-18 | 2012-04-11 | 唐山三友集团兴达化纤有限公司 | Energy-saving device of synchronous control type cooling circulating water pump |
| CN103868190A (en) * | 2012-12-12 | 2014-06-18 | 同方泰德国际科技(北京)有限公司 | Energy-saving control method suitable for central air-conditioning cooling water system |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679068B (en) * | 2016-11-28 | 2019-07-05 | 深圳达实智能股份有限公司 | The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer |
| CN106679068A (en) * | 2016-11-28 | 2017-05-17 | 深圳达实智能股份有限公司 | Chilled water supply temperature setting method and system of main refrigeration machine of central air-conditioning system |
| CN106765955A (en) * | 2016-12-23 | 2017-05-31 | 新智能源系统控制有限责任公司 | Water supply variable temperature control system based on end comfort level |
| CN106594996A (en) * | 2016-12-23 | 2017-04-26 | 新智能源系统控制有限责任公司 | District water supply variable flow control system based on meteorological condition |
| CN106594996B (en) * | 2016-12-23 | 2019-04-05 | 新智能源系统控制有限责任公司 | Water rationing vari- able flow control system based on meteorological condition |
| CN106765955B (en) * | 2016-12-23 | 2019-04-30 | 新智能源系统控制有限责任公司 | Water supply variable temperature control system based on end comfort level |
| CN107664339A (en) * | 2017-10-23 | 2018-02-06 | 广东美的暖通设备有限公司 | Control method, device and the central air-conditioning of the cooling water pump of central air-conditioning |
| CN112432307A (en) * | 2020-11-17 | 2021-03-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN112432307B (en) * | 2020-11-17 | 2021-11-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN112432326A (en) * | 2020-11-19 | 2021-03-02 | 珠海格力电器股份有限公司 | Control method and device of refrigeration secondary pump, air conditioning system, medium and processor |
| CN112432326B (en) * | 2020-11-19 | 2021-11-23 | 珠海格力电器股份有限公司 | Control method and device of refrigeration secondary pump, air conditioning system, medium and processor |
| CN112378046A (en) * | 2020-11-24 | 2021-02-19 | 珠海格力电器股份有限公司 | Automatic diagnosis method of air conditioner and air conditioner |
| CN112378046B (en) * | 2020-11-24 | 2021-12-28 | 珠海格力电器股份有限公司 | Automatic diagnosis method of air conditioner and air conditioner |
| CN113701400A (en) * | 2021-08-30 | 2021-11-26 | 广东纽恩泰新能源科技发展有限公司 | Control method for frequency conversion dual-combined heat pump module online |
| WO2024124904A1 (en) * | 2022-12-12 | 2024-06-20 | 广东美的白色家电技术创新中心有限公司 | Energy efficiency evaluation method, apparatus and system, device, and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104534628A (en) | Control method and system for variable-frequency cooling water pump | |
| CN104654522B (en) | The control method and system of frequency conversion chilled water pump | |
| CN110274361B (en) | Water multi-connected air conditioning system and control method of variable-frequency water pump thereof | |
| CN104990211B (en) | The control method of the centrifugal Central air-conditioning unit of multi-machine heads frequency conversion | |
| CN103994553B (en) | A kind of refrigeration system cooling water energy-saving control method, system and device | |
| CN105020845A (en) | Linkage energy-saving control system and method for air conditioning system | |
| CN104613651A (en) | Frequency adjustment method of variable-frequency heat-pump water heater | |
| CN104633942A (en) | Frequency adjusting and control method for variable-frequency enhanced vapor injection heat-pump water heater | |
| CN104596040A (en) | Water pump control method and system of air conditioner cooling system and household central air conditioner | |
| CN105674489A (en) | Optimal control method and system of central air conditioner water pump | |
| CN104501421A (en) | Control method of variable-frequency two-stage compressive heat pump water heater | |
| CN106051959A (en) | Energy conservation optimization system for central air conditioner | |
| 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 | |
| CN103266646A (en) | Variable frequency variable pressure water supply implementation method and variable frequency variable pressure water supply implementation device | |
| CN204063393U (en) | A kind of water cold storage energy-saving air conditioning system | |
| CN105157177A (en) | Method for controlling cooling tower outlet water temperature according to outdoor air state | |
| CN105402848A (en) | Variable displacement compressor system control method and device | |
| CN107305055B (en) | A kind of frequency-changing control system of water pump of central air conditioner | |
| CN103195522B (en) | Frequency conversion control method of circulating water pumps of two steam turbine generator sets | |
| CN104949192A (en) | Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater | |
| CN204176979U (en) | A kind of dual system Multifunctional heat pump system in parallel | |
| CN203081721U (en) | Water pump energy-saving system | |
| US20150211762A1 (en) | Heat source system control device | |
| KR101170425B1 (en) | Energy saving booster pump method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |