CN102410680B - Method for controlling thermal load response of water chilling unit - Google Patents
Method for controlling thermal load response of water chilling unit Download PDFInfo
- Publication number
- CN102410680B CN102410680B CN 201110334481 CN201110334481A CN102410680B CN 102410680 B CN102410680 B CN 102410680B CN 201110334481 CN201110334481 CN 201110334481 CN 201110334481 A CN201110334481 A CN 201110334481A CN 102410680 B CN102410680 B CN 102410680B
- Authority
- CN
- China
- Prior art keywords
- water chilling
- load amount
- thermic load
- chilling units
- handpiece water
- 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.)
- Active
Links
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for controlling thermal load response of a water chilling unit, which comprises the steps of real-timely monitoring the practical thermal load capacity and practical liquid supply temperature of the water chilling unit, and automatically regulating the water chilling unit based on the set thermal load capacity and the set liquid supply temperature. The method can real-timely monitor the thermal load capacity, and automatically unload or load based on the thermal load capacity to lead the refrigerating capacity of the water chilling unit to be quickly matched with the thermal load. The method can reduce the fluctuation of water supply temperature, and can lower the unit energy consumption to realize energy conservation and consumption reduction under the premise that the water supply temperature of the water chilling unit meets requirements.
Description
Technical field
The present invention relates to handpiece Water Chilling Units dynamic response control field, specifically a kind of control method of handpiece Water Chilling Units thermic load response.
Background technology
At present, the climate type that China air-conditioning uses belongs to the T1 class, and such air-conditioning refrigerating operaton in summer limiting temperature of relevant national standard is 43 ℃, air-conditioning manufacturing enterprise by this standard for according to manufacturing.But due to China's weather diversity, when the increase in temperature of summer high temperature and continuous days lengthening cause air-conditioning to use, the environment actual temperature is often higher than 43 ℃, and in use the handpiece Water Chilling Units Chang Buneng of air-conditioning normally moves, loads and unloads.Current, handpiece Water Chilling Units loads, the Unloading Control Main Basis is for liquid temp or return liquid temp, and there is many deficiencies: the feed flow temperature fluctuation is large; To the low-response that thermic load changes, unit bad adaptability; Unit COP is low, and energy consumption is high.In addition, in the situation that higher to the requirement of feed flow temperature accuracy, only use is just more improper for the foundation that liquid temp is used as handpiece Water Chilling Units loading, unloading.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control method of handpiece Water Chilling Units thermic load response, solves present handpiece Water Chilling Units and loads and the inaccurate problem of unloading operation.
Technical scheme of the present invention is:
A kind of control method of handpiece Water Chilling Units thermic load response comprises the following steps:
(1), record the design temperature of handpiece Water Chilling Units and set the thermic load amount when prime;
(2), gather handpiece Water Chilling Units for liquid temp, calculate the actual heating load amount;
(3), contrast supplies the size of liquid temp and design temperature surely, actual heating load amount and the size of setting the thermic load amount, determine that handpiece Water Chilling Units loads, unloads or three kinds of operations of maintenance current state:
A, when for liquid temp greater than design temperature, and the actual heating load amount is carried out load operation to unit greater than when the prime setting thermic load amount;
B, when for liquid temp greater than design temperature, and the actual heating load amount is less than or equal to when prime is set the thermic load amount, keeps current state constant;
C, when being less than or equal to design temperature for liquid temp, and the actual heating load amount keeps current state constant greater than when the prime setting thermic load amount;
D, when being less than or equal to design temperature for liquid temp, and the actual heating load amount is less than or equal to when prime and sets the thermic load amount, unit carried out unloading operation;
(4), after completing aforesaid operations, after time-delay a period of time after system stability, Resurvey temperature and flow signal, when reach set delay time after, re-start control operation.
Described setting thermic load amount at different levels is to carry out respectively analytical calculation by the loading progression to handpiece Water Chilling Units, obtains every grade and loads the progression thermic load amount of correspondence respectively, and it is decided to be setting thermic load amount at different levels.
Described actual heating load amount is to calculate according to Thermodynamics Formulas, and Thermodynamics Formulas is as follows:
Q=C×F×（T
2-T
1）
Wherein: Q-unit thermic load amount (kW)
The specific heat of C-circulation fluid (kJ/ (kgK))
F-circulating fluid flow rate (kg/s)
T
1-confession liquid temp (℃)
T
2-time liquid temp (℃).
The described liquid temp that supplies reaches back liquid temp for all returning liquid temp by the temperature sensor that is arranged on liquid feeding pipeline with the average liquid temp peace that supplies that is arranged at the temperature sensor collection on back liquid pipeline and obtain by mean value calculation after software filtering.
Described circulating fluid flow rate is for by being arranged at the circulating fluid quantity sensor collection on the liquid back pipe road and the average circulating fluid flow rate that obtains by mean value calculation after software filtering.
The measured temperature of temperature sensor that describedly is arranged at the measured temperature of temperature sensor on liquid feeding pipeline, is arranged on the liquid back pipe road all gathers, processes and store by intelligent controller.
The measured data on flows of circulating fluid quantity sensor on described liquid back pipe road gathers, processes and store by intelligent controller.
Described software filtering refers to utilize method that software is processed to remove interfering data in image data, and obtain want calculated data; Described mean value calculation is selected average weighted method, progressively strengthens in proper order the weight of this moment data point in whole data group constantly by gathering.
Setting delay time of the present invention will fully take into account the time interval of compressor loads in handpiece Water Chilling Units, unloading, be difficult for too short or long, time is too short may have a negative impact to the handpiece Water Chilling Units life-span, and overlong time may not reach the thermic load effect of response fast.
The present invention can the Real-Time Monitoring thermic load variation, and adjust the refrigerating capacity of handpiece Water Chilling Units by the mode of Self-tipping or loading according to the thermic load variation, make itself and thermic load Rapid matching, the method can reduce the fluctuation of supply water temperature, and handpiece Water Chilling Units can be made in the situation that supply water temperature meets the demands, reduce units consumption, reach energy-saving and cost-reducing purpose.
Description of drawings
Fig. 1 is operational flowchart of the present invention, and wherein, " Y " represents eligible, and " N " represents ineligible.
The specific embodiment
See Fig. 1, a kind of control method of handpiece Water Chilling Units thermic load response comprises the following steps:
(1), record the design temperature of handpiece Water Chilling Units and set the thermic load amount when prime;
(2), gather handpiece Water Chilling Units for liquid temp, and calculate the actual heating load amount;
(3), contrast supplies the size of liquid temp and design temperature surely, actual heating load amount and the size of setting the thermic load amount, determine that handpiece Water Chilling Units loads, unloads or three kinds of operations of maintenance current state:
A, when for liquid temp greater than design temperature, and the actual heating load amount is carried out load operation to unit greater than when the prime setting thermic load amount;
B, when for liquid temp greater than design temperature, and the actual heating load amount is less than or equal to when prime is set the thermic load amount, keeps current state constant;
C, when being less than or equal to design temperature for liquid temp, and the actual heating load amount keeps current state constant greater than when the prime setting thermic load amount;
D, when being less than or equal to design temperature for liquid temp, and the actual heating load amount is less than or equal to when prime and sets the thermic load amount, unit carried out unloading operation;
(4), after completing aforesaid operations, after time-delay a period of time after system stability, Resurvey temperature and flow signal, when reach set delay time after, return and carry out new control operation.
Wherein, setting thermic load amounts at different levels are to carry out respectively analytical calculation by the progression that respectively loads to handpiece Water Chilling Units, obtain every grade and load the progression thermic load amount of correspondence respectively, and it is decided to be setting thermic load at different levels;
Reach back liquid temp for all returning liquid temp by the temperature sensor that is arranged on liquid feeding pipeline with the average liquid temp peace that supplies that is arranged at the temperature sensor collection on back liquid pipeline and obtain by mean value calculation after software filtering for liquid temp;
Circulating fluid flow rate is for by being arranged at the circulating fluid quantity sensor collection on the liquid back pipe road and the average circulating fluid flow rate that obtains by mean value calculation after software filtering;
Actual heating load amount through type: Q=C * F * (T
2-T
1) calculate.Wherein, C is the specific heat of cycling hot, and F is the handpiece Water Chilling Units circulating fluid flow rate, T
2For handpiece Water Chilling Units is on average returned liquid temp, T
1For handpiece Water Chilling Units on average supplies liquid temp.
Software filtering is to utilize method that software is processed to remove interfering data in image data, and obtain want calculated data; Described mean value calculation is selected average weighted method, progressively strengthens in proper order the weight of this moment data point in whole data group constantly by gathering.
Claims (8)
1. the control method of handpiece Water Chilling Units thermic load response is characterized in that: comprise the following steps:
(1), record the design temperature of handpiece Water Chilling Units and set the thermic load amount when prime;
(2), gather handpiece Water Chilling Units for liquid temp, calculate the actual heating load amount;
(3), contrast is for the size of liquid temp and design temperature, actual heating load amount and the size of setting the thermic load amount, determine that handpiece Water Chilling Units loads, unloads or three kinds of operations of maintenance current state:
A, when for liquid temp greater than design temperature, and the actual heating load amount is carried out load operation to unit greater than when the prime setting thermic load amount;
B, when for liquid temp greater than design temperature, and the actual heating load amount is less than or equal to when prime is set the thermic load amount, keeps current state constant;
C, when being less than or equal to design temperature for liquid temp, and the actual heating load amount keeps current state constant greater than when the prime setting thermic load amount;
D, when being less than or equal to design temperature for liquid temp, and the actual heating load amount is less than or equal to when prime and sets the thermic load amount, unit carried out unloading operation;
(4), after completing aforesaid operations, after time-delay a period of time after system stability, Resurvey temperature and flow signal, when reach set delay time after, re-start control operation.
2. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 1, it is characterized in that: described setting thermic load amounts at different levels are to carry out respectively analytical calculation by the loading progression to handpiece Water Chilling Units, obtain every grade and load the progression thermic load amount of correspondence respectively, and it is decided to be setting thermic load amount at different levels.
3. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 1, it is characterized in that: described actual heating load amount is to calculate according to Thermodynamics Formulas, and Thermodynamics Formulas is as follows:
Q=C×F×（T
2-T
1）
Wherein: Q-unit thermic load amount (kW)
The specific heat of C-circulation fluid (kJ/ (kgK))
F-circulating fluid flow rate (kg/s)
T
1-confession liquid temp (℃)
T
2-time liquid temp (℃).
4. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 3 is characterized in that: describedly reach back liquid temp for all returning liquid temp by the temperature sensor that is arranged on liquid feeding pipeline with the average confession liquid temp peace that is arranged at the temperature sensor collection on back liquid pipeline and obtain by mean value calculation after software filtering for liquid temp.
5. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 3 is characterized in that: described circulating fluid flow rate is for by being arranged at the circulating fluid quantity sensor collection on the liquid back pipe road and the average circulating fluid flow rate that obtains by mean value calculation after software filtering.
6. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 4 is characterized in that: the measured temperature of temperature sensor that describedly be arranged at the measured temperature of temperature sensor on liquid feeding pipeline, is arranged on the liquid back pipe road all gathers, processes and store by intelligent controller.
7. the control method of a kind of handpiece Water Chilling Units thermic load response according to claim 5 is characterized in that: the measured data on flows of circulating fluid quantity sensor on described liquid back pipe road gathers, processes and store by intelligent controller.
8. the control method of according to claim 4 or 5 described a kind of handpiece Water Chilling Units thermic loads responses is characterized in that: described software filtering refers to utilize method that software is processed to remove interfering data in image data, and obtain want calculated data; Described mean value calculation is selected average weighted method, progressively strengthens in proper order the weight of this moment data point in whole data group constantly by gathering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110334481 CN102410680B (en) | 2011-10-30 | 2011-10-30 | Method for controlling thermal load response of water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110334481 CN102410680B (en) | 2011-10-30 | 2011-10-30 | Method for controlling thermal load response of water chilling unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102410680A CN102410680A (en) | 2012-04-11 |
| CN102410680B true CN102410680B (en) | 2013-06-19 |
Family
ID=45912902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110334481 Active CN102410680B (en) | 2011-10-30 | 2011-10-30 | Method for controlling thermal load response of water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410680B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456836B (en) * | 2014-11-04 | 2017-04-12 | 江苏省电力公司 | Method for controlling orderly power utilization of central air conditioner based on load relation |
| CN104748319B (en) * | 2015-04-22 | 2018-07-03 | 珠海格力电器股份有限公司 | Multi-unit air conditioning system control method and device and multi-unit air conditioning system |
| CN105003954B (en) * | 2015-07-17 | 2017-10-10 | 张久明 | Heat supply adjustment system, heat supply adjusting apparatus and the method for building |
| CN105042780A (en) * | 2015-07-23 | 2015-11-11 | 魏强 | Central-air-conditioner control system |
| CN106247441B (en) * | 2016-08-08 | 2019-05-21 | 山东华旗新能源科技有限公司 | Heat pump energy-conserving control system and method |
| CN110492530A (en) * | 2019-07-26 | 2019-11-22 | 广西电网有限责任公司南宁供电局 | A kind of water cooler participates in the duty control method and device of power grid frequency modulation |
| CN110953628A (en) * | 2019-12-20 | 2020-04-03 | 珠海格力电器股份有限公司 | Multistage series heat pump system and control method thereof |
| CN111174272A (en) * | 2020-01-06 | 2020-05-19 | 珠海格力电器股份有限公司 | Heat pump heating system and control method thereof |
| CN113405307B (en) * | 2020-03-16 | 2023-03-28 | 大族激光科技产业集团股份有限公司 | Circulating liquid separation control method and device |
| CN112098130B (en) * | 2020-09-15 | 2022-04-15 | 武汉汉立制冷科技股份有限公司 | Dynamic thermal load simulation device for testing optical fiber laser water chiller |
| CN115289732B (en) * | 2022-07-04 | 2023-11-21 | 广东纽恩泰新能源科技发展有限公司 | Heat pump system control method and device, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097670A (en) * | 1990-01-24 | 1992-03-24 | Hitachi, Ltd | Water chilling method and apparatus for the same |
| JP2000161758A (en) * | 1998-11-26 | 2000-06-16 | Fuji Koki Corp | Temperature regulator |
| CN1654893A (en) * | 2005-01-28 | 2005-08-17 | 杨东 | Energy-saving intelligent control system for central air conditioner |
| CN102094817A (en) * | 2011-02-15 | 2011-06-15 | 四川长虹空调有限公司 | Infinitely variable control compressor for water chiller and loading control method for infinitely variable control compressor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1123113A (en) * | 1997-07-01 | 1999-01-26 | Mitsubishi Heavy Ind Ltd | Refrigerating machine remote performance diagnosing device |
| US20050155369A1 (en) * | 2004-01-15 | 2005-07-21 | Toshiba Carrier Corporation | Air conditioner |
-
2011
- 2011-10-30 CN CN 201110334481 patent/CN102410680B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5097670A (en) * | 1990-01-24 | 1992-03-24 | Hitachi, Ltd | Water chilling method and apparatus for the same |
| JP2000161758A (en) * | 1998-11-26 | 2000-06-16 | Fuji Koki Corp | Temperature regulator |
| CN1654893A (en) * | 2005-01-28 | 2005-08-17 | 杨东 | Energy-saving intelligent control system for central air conditioner |
| CN102094817A (en) * | 2011-02-15 | 2011-06-15 | 四川长虹空调有限公司 | Infinitely variable control compressor for water chiller and loading control method for infinitely variable control compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102410680A (en) | 2012-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102410680B (en) | Method for controlling thermal load response of water chilling unit | |
| CN104359195A (en) | Central air-conditioner chilled water control method based on dynamic response to tail-end total load changes | |
| CN105674489B (en) | A kind of optimal control method and system of water pump of central air conditioner | |
| CN102927657B (en) | Water temperature change control method by air-conditioner temperature change speed method | |
| CN105953353A (en) | Central air-conditioning cold source system quota control method and system | |
| CN104748308A (en) | Control method for loading and load shedding of optimized module machine system | |
| WO2023071330A1 (en) | Method and apparatus for regulating and controlling outlet water temperature of heat pump system, and heat pump system | |
| CN103994554A (en) | Variable pressure difference control device, method and system for air-conditioner | |
| CN204902127U (en) | Terminal coordinated control's of air conditioner water system and air conditioner economizer | |
| CN205807750U (en) | Cold group control energy-saving control system and air-conditioning equipment | |
| CN104566787A (en) | Energy-saving control method and control system of water chilling unit | |
| CN101571308B (en) | PLC energy saving control method of frozen water pump and cooling water pump in central air-conditioning system | |
| CN113701321B (en) | Energy-saving frequency conversion control method for central air-conditioning water pump | |
| CN101922783A (en) | Enthalpy control-based method and system for controlling energy conservation of air conditioner | |
| Liu et al. | Research on operating characteristics of direct-return chilled water system controlled by variable temperature difference | |
| CN104949192A (en) | Energy-saving control method for floor radiant heating system comprising variable-frequency heat-pump water heater | |
| CN203857618U (en) | Self-adaptive throttle control equipment for water cooling unit freezing pump of central air conditioner | |
| CN204478354U (en) | A kind of ice-storage air-conditioning control system | |
| CN103335407B (en) | Air-cooled heat-pump cold water-heating machine system and capacity output control thereof | |
| CN203258800U (en) | Central air conditioner dynamic tracking energy-saving management control system | |
| CN209341528U (en) | A kind of controlling system of central air conditioner | |
| CN103245037A (en) | Method and system for controlling air-conditioning variable water temperatures | |
| CN202902549U (en) | Temperature-variable speed type water temperature control device | |
| CN101694340A (en) | Method for judging starting point of defrosting and refrigerating system for intelligent defrosting | |
| CN105571089A (en) | Energy-saving intelligent ecological central air conditioning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |