CN111047117A - Differential pressure bypass valve energy-saving optimization method based on terminal load prediction - Google Patents
Differential pressure bypass valve energy-saving optimization method based on terminal load prediction Download PDFInfo
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Abstract
The invention provides a differential pressure bypass valve energy-saving optimization method based on terminal load prediction, which adjusts the opening of a differential pressure bypass valve by using terminal load, changes the cold energy flowing to the terminal to ensure that the provided cold energy is matched with the load required by the terminal of an air conditioner, and controls the differential pressure bypass valve to be automatically adjusted to be in a closed state when the indoor temperature reaches or exceeds an expected value, and all water supply in a system pipeline flows into a terminal device of the air conditioner; when the indoor temperature is lower than the expected value, the minimum cold quantity provided by the cold machine is larger than the load required by the tail end, the differential pressure bypass valve is controlled to be automatically adjusted to be in an open state, the opening degree is adjusted according to the load of the tail end, part of water supply in a system pipeline directly flows into the water return pipe through the bypass pipe, and the unnecessary cold quantity at the tail end is sent back into the cold machine through the differential pressure bypass valve, so that the cold quantity flowing into the tail end is controlled more accurately and flexibly, the control of a water system is optimized, and the purpose of.
Description
Technical Field
The invention relates to the technical field of industrial production simulation design, in particular to a differential pressure bypass valve energy-saving optimization method based on terminal load prediction.
Background
With the rapid development of science and technology and the increasing improvement of living standard of people in China, the central air conditioner is widely applied to modern intelligent buildings. Especially in large public buildings, the application of central air-conditioning is one of the important metrics of modern intelligent building technology, and is the building equipment necessary for modern intelligent buildings to create high-comfort, high-efficiency working and living environments. However, the central air conditioner is one of the most energy-consuming devices in the building, and in the conventional control mode, the cooling energy flowing through the tail end is adjusted through the rotating speed of the chilled water pump and the two-way valve of the air conditioner. The differential pressure bypass valve is only used as a differential pressure protection device between the water collector and the water separator, and when the differential pressure between the water separator and the water collector is too large, the differential pressure valve is adjusted, so that the cold quantity of the tail end is influenced; in addition, in actual operation, the pressure difference between the water collector and the water separator does not reach the protection threshold value under the condition that the frequency of the chilled water pump is reduced to the minimum and the opening degree of the through valve at the tail end of the air conditioner is reduced to the minimum. However, at this time, the amount of cold supplied by the refrigeration system is greater than the amount of cold actually required by the tail end of the air conditioner, resulting in excess amount of cold flowing into the tail end, and the system cannot accurately control the amount of cold delivered to the tail end, if the amount of cold cooled by the refrigerator is Q1, the amount of cold required by the tail end is Q2, and if Q1 is greater than Q2, the tail end temperature will be lower than the target value, resulting in a great loss of cold, and the comfort of the tail end will be greatly reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a baseThe energy-saving optimization method of the differential pressure bypass valve based on the terminal load prediction comprises the following steps: step S1, determining the corresponding regulating target temperature t of the indoor environment0And collecting the real-time temperature t of the indoor environment1(ii) a Step S2, adjusting the target temperature t0With the real-time temperature t1The opening degree adjusting mode of the differential pressure bypass valve is adaptively determined according to the size relation between the differential pressure bypass valve and the valve body; step S3, according to the opening adjusting mode, corresponding opening changing operation is carried out on the differential pressure bypass valve; step S4, after the opening degree changing operation is completed, the adjustment target temperature t is judged again0With the real-time temperature t1The matching relationship between the two; therefore, the energy-saving optimization method of the differential pressure bypass valve based on the terminal load prediction has the advantages that the opening of the differential pressure bypass valve is adjusted by the terminal load, the cold energy flowing to the terminal is changed to ensure that the provided cold energy is matched with the load required by the terminal of the air conditioner, when the indoor temperature reaches or exceeds the expected value, the differential pressure bypass valve is controlled to be automatically adjusted to be in a closed state, and all water supply in a system pipeline flows into a terminal device of the air conditioner; when the indoor temperature is lower than the expected value, the minimum cold quantity provided by the cold machine is larger than the load required by the tail end, the differential pressure bypass valve is controlled to be automatically adjusted to be in an open state, the opening degree is adjusted according to the load of the tail end, part of water supply in a system pipeline directly flows into the water return pipe through the bypass pipe, and the unnecessary cold quantity at the tail end is sent back into the cold machine through the differential pressure bypass valve, so that the cold quantity flowing into the tail end is controlled more accurately and flexibly, the control of a water system is optimized, and the purpose of.
The invention provides a pressure difference bypass valve energy-saving optimization method based on terminal load prediction, which is characterized by comprising the following steps of:
step S1, determining the corresponding regulating target temperature t of the indoor environment0And acquiring the real-time temperature t of the indoor environment1；
Step S2, adjusting the target temperature t0With said real-time temperature t1The size relationship between the two, adaptabilityDetermining an opening degree adjustment mode for the differential pressure bypass valve;
step S3, according to the opening adjusting mode, carrying out corresponding opening changing operation on the differential pressure bypass valve;
step S4, after the opening degree changing operation is finished, the adjustment target temperature t is judged again0With said real-time temperature t1The matching relationship between the two;
further, in step S1, the adjustment target temperature t corresponding to the indoor environment is determined0And acquiring the real-time temperature t of the indoor environment1Specifically, the method comprises the following steps of,
step S101, acquiring weather data of an outdoor environment corresponding to the indoor environment, thermal infrared data and carbon dioxide concentration data of the indoor environment;
step S102, determining the adjusting target temperature t according to the weather data, the thermal infrared data and the carbon dioxide concentration data0；
Step S103, collecting real-time zone temperatures corresponding to different position zones of the indoor environment, and calculating to obtain the real-time temperature t1；
Further, in the step S101, acquiring weather data about an outdoor environment corresponding to the indoor environment and thermal infrared data and carbon dioxide concentration data about the indoor environment specifically includes,
step S1011, acquiring outdoor temperature data and outdoor humidity data of the outdoor environment in a predetermined time period, and calculating an outdoor average temperature value and an outdoor average humidity value according to the outdoor temperature data and the outdoor humidity data, respectively, as the weather data;
step S1012; acquiring a thermal infrared variable state and a carbon dioxide concentration variable state of the indoor environment in the preset time period, and calculating an indoor thermal infrared average value and a carbon dioxide concentration average value respectively to serve as the thermal infrared data and the carbon dioxide concentration data;
alternatively, the first and second electrodes may be,
in the step S102, the adjustment target temperature t is determined according to the weather data, the thermal infrared data, and the carbon dioxide concentration data0Specifically, the method comprises the following steps of,
step S1021, constructing an indoor temperature regulation demand algorithm model according to the outdoor average temperature value, the outdoor average humidity value, the indoor thermal infrared average value and the carbon dioxide concentration average value;
step S1022, determining the regulation target temperature t according to the indoor temperature regulation demand algorithm model0；
Alternatively, the first and second electrodes may be,
in step S103, real-time area temperatures corresponding to different position areas of the indoor environment are collected, and the real-time temperature t is calculated1Specifically, the method comprises the following steps of,
step S1031, respectively arranging a plurality of temperature sensors with different sensitivities in different position areas of the indoor environment;
step S1032, acquiring a plurality of detection temperature data with a step distribution mode corresponding to the different position areas through the plurality of temperature sensors;
step S1033, calculating the real-time temperature t according to the plurality of detected temperature data1；
Further, in the step S2, the adjustment target temperature t is set0With said real-time temperature t1The step S201 of adaptively determining the opening degree adjustment mode of the differential pressure bypass valve specifically includes the step of adjusting the target temperature t0With said real-time temperature t1Carrying out size comparison processing to obtain a corresponding size comparison result;
step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0Determining to execute a first opening degree adjustment mode on the differential pressure bypass valve;
step S203, if the magnitude comparison result indicates the real-time temperature t1Less than or equal to the regulation target temperature t0Then determining to saidThe differential pressure bypass valve executes a second opening degree adjustment mode;
further, in the step S201, the adjustment target temperature t is adjusted0With said real-time temperature t1The step of performing a size comparison process to obtain a corresponding size comparison result specifically includes,
step S2011, determining the adjusting target temperature t according to a preset temperature change limit range0With said real-time temperature t1Respective data availability;
step S2012, for the regulated target temperature t with corresponding data availability0With said real-time temperature t1Performing the size comparison processing;
alternatively, the first and second electrodes may be,
in the step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0The determining of the first opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0If so, maintaining the current opening state of the differential pressure bypass valve unchanged, and continuously updating the adjustment target temperature t0With said real-time temperature t1To periodically perform the step S201;
in the step S203, if the magnitude comparison result indicates the real-time temperature t1Less than or equal to the regulation target temperature t0The determining of the second opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Less than or equal to the regulation target temperature t0Calculating and acquiring an expected opening value of the differential pressure bypass valve so as to enter the second opening adjusting mode;
further, in the step S3, the performing the corresponding opening degree changing operation on the differential pressure bypass valve according to the opening degree adjusting mode specifically includes,
step S301A, acquiring a wind speed parameter and a freezing flow parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger instruction about the opening degree adjusting mode;
step S302A, calculating an expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow parameter;
step S303A, according to the expected opening value, carrying out manual opening change operation or automatic opening change operation on the differential pressure bypass valve;
alternatively, the first and second electrodes may be,
in step S3, the performing the corresponding opening degree changing operation on the differential pressure bypass valve according to the opening degree adjustment mode specifically includes,
step S301B, calculating the opening angle theta corresponding to the differential pressure bypass valve by using the following formula (2),
in the above equation (2), θ represents an opening angle of the differential pressure bypass valve, t1Representing the real-time temperature, t0Representing a regulation target temperature, R representing an inner diameter radius of the differential pressure bypass valve, and f representing a rotation base force value of the differential pressure bypass valve;
step S302B, calculating the voltage value U required by the opening angle theta corresponding to the differential pressure bypass valve by using the following formula (3),
in the formula (3), U represents a voltage value U required for the opening angle θ corresponding to the differential pressure bypass valve, r represents a resistance value of the differential pressure bypass valve, and I represents a current value of the current corresponding to the differential pressure bypass valve;
step S303B, calculating the power P saved when the opening angle of the differential pressure bypass valve is automatically adjusted by using the following formula (4),
in the above formula (4), P represents the power saved when the opening angle of the differential pressure bypass valve is automatically adjusted, and P represents0Indicating the power value when the differential pressure bypass valve does not automatically adjust the opening angle,
when P <0, switching the differential pressure bypass valve to a non-autoregulation mode,
when P is larger than or equal to 0, adjusting the differential pressure bypass valve according to a preset opening angle;
further, in step S301A, the obtaining of the wind speed parameter and the freezing flow rate parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger instruction of the opening degree adjustment mode specifically includes,
step S3011A, according to the trigger instruction about the opening degree regulation mode, respectively sending a first parameter detection instruction and a second parameter detection instruction to an air outlet unit and a water chilling unit at the tail end of the air conditioning system;
step S3012A, respectively acquiring the air conditioner terminal air speed of the terminal air outlet unit and the refrigeration system flow of the water chilling unit according to the first parameter detection instruction and the second parameter detection instruction, and respectively taking the air conditioner terminal air speed of the terminal air outlet unit and the refrigeration system flow as the air speed parameter and the refrigeration flow parameter;
further, in the step S302A, the calculating the expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow rate parameter specifically includes,
step S3021A, obtaining an air conditioning end air speed V and a refrigeration system flow L of the air conditioning system corresponding to the differential pressure bypass valve from the air speed parameter and the refrigeration flow parameter, respectively;
step S3022A, calculating the expected opening degree value K according to the following formula (1)
K＝(t0-t1)*V*L*D(s)(1)
In the above formula (1), t0For the adjustment of the target temperature, t1Is the real-time temperature of the indoor environment, D(s)Is a preset compensation coefficient;
further, in the step S303A, the performing, according to the expected opening value, a manual opening changing operation or an automatic opening changing operation on the differential pressure bypass valve specifically includes,
step S3031A, determining whether the expected opening value matches a first opening range or a second opening range, wherein the accuracy of the first opening range is smaller than that of the second opening range;
step 3032A, if the expected opening value matches the first opening range, performing manual opening change operation on the differential pressure bypass valve;
step 3033A, if the expected opening value matches the second opening range, performing automatic opening change operation on the differential pressure bypass valve;
further, in the step S4, after the opening degree change operation is completed, the adjustment target temperature t is newly determined0With said real-time temperature t1The matching relationship between the two specifically includes,
step S401, determining a completion time point corresponding to the completion of the opening degree change operation, and re-collecting the real-time temperature t of the indoor environment at a preset time interval by taking the completion time point as a starting point1；
Step S402, judging the real-time temperature t of the reacquired indoor environment1And the adjustment target temperature t0The difference Δ t therebetween;
step S403, if the difference value delta t is smaller than or equal to a preset temperature difference range, stopping the current energy-saving optimization method of the differential pressure bypass valve;
and S404, if the difference value delta t is larger than a preset temperature difference range, sequentially and repeatedly executing the steps S1-S3 until the difference value delta t is smaller than or equal to the preset temperature difference range.
Compared with the prior art, the differential pressure bypass valve energy-saving optimization method based on terminal load prediction adjusts the opening of the differential pressure bypass valve by using the terminal load, changes the cold energy flowing to the terminal to ensure that the provided cold energy is matched with the load required by the terminal of the air conditioner, controls the differential pressure bypass valve to be automatically adjusted to be in a closed state when the indoor temperature reaches or exceeds the expected value, and completely supplies water in a system pipeline to the terminal device of the air conditioner; when the indoor temperature is lower than the expected value, the minimum cold quantity provided by the cold machine is larger than the load required by the tail end, the differential pressure bypass valve is controlled to be automatically adjusted to be in an open state, the opening degree is adjusted according to the load of the tail end, part of water supply in a system pipeline directly flows into the water return pipe through the bypass pipe, and the unnecessary cold quantity at the tail end is sent back into the cold machine through the differential pressure bypass valve, so that the cold quantity flowing into the tail end is controlled more accurately and flexibly, the control of a water system is optimized, and the purpose of.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a differential pressure bypass valve energy-saving optimization method based on end load prediction according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic flow chart of a differential pressure bypass valve energy-saving optimization method based on end load prediction according to an embodiment of the present invention is provided. The energy-saving optimization method of the differential pressure bypass valve based on the terminal load prediction comprises the following steps:
step S1, determining the corresponding regulating target temperature t of the indoor environment0And collecting the real-time temperature t of the indoor environment1；
Step S2, adjusting the target temperature t0With the real-time temperature t1The opening degree adjusting mode of the differential pressure bypass valve is adaptively determined according to the size relation between the differential pressure bypass valve and the valve body;
step S3, according to the opening adjusting mode, corresponding opening changing operation is carried out on the differential pressure bypass valve;
step S4, after the opening degree changing operation is completed, the adjustment target temperature t is judged again0With the real-time temperature t1The matching relationship between them.
Preferably, in step S1, the adjustment target temperature t corresponding to the indoor environment is determined0And collecting the real-time temperature t of the indoor environment1Specifically, the method comprises the following steps of,
step S101, acquiring weather data of an outdoor environment corresponding to the indoor environment, thermal infrared data and carbon dioxide concentration data of the indoor environment;
step S102, determining the adjusting target temperature t according to the weather data, the thermal infrared data and the carbon dioxide concentration data0；
Step S103, collecting real-time zone temperatures corresponding to different position zones of the indoor environment, and calculating to obtain the real-time temperature t1。
Preferably, in the step S101, the acquiring weather data about an outdoor environment corresponding to the indoor environment and the thermal infrared data and the carbon dioxide concentration data about the indoor environment specifically includes,
step S1011, obtaining outdoor temperature data and outdoor humidity data of the outdoor environment in a predetermined time period, and calculating an outdoor average temperature value and an outdoor average humidity value according to the outdoor temperature data and the outdoor humidity data, respectively, as the weather data;
step S1012; acquiring a thermal infrared variable state and a carbon dioxide concentration variable state of the indoor environment in the preset time period, and calculating an indoor thermal infrared average value and a carbon dioxide concentration average value respectively to serve as the thermal infrared data and the carbon dioxide concentration data;
alternatively, the first and second electrodes may be,
in the step S102, the adjustment target temperature t is determined according to the weather data, the thermal infrared data and the carbon dioxide concentration data0Specifically, the method comprises the following steps of,
step S1021, constructing an indoor temperature regulation demand algorithm model according to the outdoor average temperature value, the outdoor average humidity value, the indoor thermal infrared average value and the carbon dioxide concentration average value;
step S1022, determining the target temperature t according to the algorithm model of the indoor temperature adjustment requirement0；
Alternatively, the first and second electrodes may be,
in step S103, real-time zone temperatures corresponding to different location zones of the indoor environment are collected, and the real-time temperature t is calculated1Specifically, the method comprises the following steps of,
step S1031, respectively arranging a plurality of temperature sensors with different sensitivities in different position areas of the indoor environment;
step S1032, acquiring a plurality of detection temperature data with a step distribution mode corresponding to the different position areas through the plurality of temperature sensors;
step S1033, calculating the real-time temperature t according to the plurality of detected temperature data1。
Preferably, in the step S2, the target temperature t is adjusted according to the target temperature0With the real-time temperature t1The adaptively determining the opening degree adjusting mode of the differential pressure bypass valve specifically comprises,
step S201, adjusting the target temperature t0With the real-time temperature t1Carrying out size comparison processing to obtain a corresponding size comparison result;
step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulated target temperature t0Determining to execute a first opening degree adjustment mode on the differential pressure bypass valve;
step S203, if the magnitude comparison result indicates the real-time temperature t1Is less than or equal to the regulation target temperature t0It is determined that the second opening degree adjustment mode is executed for the differential pressure bypass valve.
Preferably, in the step S201, the adjustment target temperature t is adjusted0With the real-time temperature t1The step of performing a size comparison process to obtain a corresponding size comparison result specifically includes,
step S2011, determining the adjusting target temperature t according to a preset temperature change limit range0With the real-time temperature t1Respective data availability;
step S2012, for the adjusted target temperature t with corresponding data availability0With the real-time temperature t1Performing the size comparison processing;
alternatively, the first and second electrodes may be,
in the step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulated target temperature t0The determining of the first opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Greater than the regulated target temperature t0If so, maintaining the current opening state of the differential pressure bypass valve unchanged, and continuously updating the adjustment target temperature t0With the real-time temperature t1To periodically execute the step S201;
in step S203, if the magnitude comparison result indicates the real-time temperature t1Is less than or equal to the regulation target temperature t0The determination of the second opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Is less than or equal to the regulation target temperature t0And calculating and acquiring an expected opening value of the differential pressure bypass valve, so as to enter the second opening regulation mode.
Preferably, in the step S3, according to the opening degree adjustment mode, the performing the corresponding opening degree changing operation on the differential pressure bypass valve specifically includes,
step S301A, acquiring a wind speed parameter and a freezing flow parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger instruction about the opening degree adjusting mode;
step S302A, calculating an expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow parameter;
in step S303A, a manual opening degree changing operation or an automatic opening degree changing operation is performed on the differential pressure bypass valve based on the desired opening degree value.
Preferably, in the step S3, according to the opening degree adjustment mode, the performing the corresponding opening degree changing operation on the differential pressure bypass valve specifically includes,
in step S301B, the opening angle θ corresponding to the differential pressure bypass valve is calculated by the following formula (2),
in the above equation (2), θ represents the opening angle of the differential pressure bypass valve, t1Representing the real-time temperature, t0Indicating the target temperature of regulation, R indicating the inner diameter radius of the differential pressure bypass valve, and f indicating the rotation basic force value of the differential pressure bypass valve;
step S302B, calculating a voltage value U required for the opening angle θ corresponding to the differential pressure bypass valve using the following formula (3),
in the above formula (3), U represents a voltage value U required for the opening angle θ corresponding to the differential pressure bypass valve, r represents a resistance value of the differential pressure bypass valve, and I represents a current value of the current corresponding to the differential pressure bypass valve;
step S303B, calculating the power P saved when the opening angle of the differential pressure bypass valve is automatically adjusted by using the following formula (4),
in the above formula (4), P represents the power saved when the opening angle of the differential pressure bypass valve is automatically adjusted, and P represents0The power value when the differential pressure bypass valve does not automatically adjust the opening angle is indicated,
when P <0, the differential pressure bypass valve is switched to the non-automatic adjusting mode,
when P is larger than or equal to 0, adjusting the differential pressure bypass valve according to a preset opening angle;
therefore, the pressure difference bypass valve based on the terminal load prediction can save more energy in the process, the voltage required in the automatic mode is calculated through a formula, the automatic adjustment can be controlled by a program, and the practicability and the reliability of the pressure difference bypass valve are improved.
Preferably, in step S301A, the obtaining of the wind speed parameter and the freezing flow rate parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger command of the opening degree adjustment mode specifically includes,
step S3011A, according to the trigger instruction about the opening degree regulation mode, respectively sending a first parameter detection instruction and a second parameter detection instruction to an air outlet unit and a water chilling unit at the tail end of the air conditioning system;
step S3012A, according to the first parameter detection instruction and the second parameter detection instruction, respectively acquiring an air conditioner terminal air speed of the terminal air outlet unit and a refrigeration system flow rate of the chiller unit, to be respectively used as the air speed parameter and the refrigeration flow rate parameter.
Preferably, in step S302A, the calculating the expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow rate parameter specifically includes,
step S3021A, obtaining an air conditioning end air speed V and a refrigeration system flow L of the air conditioning system corresponding to the differential pressure bypass valve from the air speed parameter and the refrigeration flow parameter, respectively;
in step S3022A, the expected opening degree value K is calculated according to the following formula (1)
K＝(t0-t1)*V*L*D(s)(1)
In the above formula (1), t0For the adjustment of the target temperature, t1Is the real-time temperature of the indoor environment, D(s)The compensation coefficient is preset.
Preferably, in the step S303A, performing the manual opening degree changing operation or the automatic opening degree changing operation on the differential pressure bypass valve according to the expected opening degree value specifically includes,
step S3031A, determining whether the expected opening value matches a first opening range or a second opening range, wherein the accuracy of the first opening range is smaller than that of the second opening range;
step S3032A, if the expected opening value matches the first opening range, performing a manual opening change operation on the differential pressure bypass valve;
in step S3033A, if the expected opening value matches the second opening range, an automatic opening change operation is performed on the differential pressure bypass valve.
Preferably, in the step S4, the adjustment target temperature t is newly judged after the opening degree change operation is completed0With the real-time temperature t1The matching relationship between the two specifically includes,
step S401, determining a completion time point corresponding to the completion of the opening degree change operation, and re-acquiring the real-time temperature t of the indoor environment at a predetermined time interval with the completion time point as a starting point1；
Step S402, judging the real-time temperature t of the indoor environment1And the adjustment target temperature t0The difference Δ t therebetween;
step S403, if the difference value delta t is smaller than or equal to a preset temperature difference range, stopping the current energy-saving optimization method of the differential pressure bypass valve;
in step S404, if the difference Δ t is greater than the predetermined temperature difference range, the steps S1-S3 are repeated in sequence until the difference Δ t is less than or equal to the predetermined temperature difference range.
From the content of the embodiment, the differential pressure bypass valve energy-saving optimization method based on terminal load prediction adjusts the opening of the differential pressure bypass valve by using the terminal load, changes the cold energy flowing to the terminal to ensure that the provided cold energy is matched with the load required by the terminal of the air conditioner, and controls the differential pressure bypass valve to be automatically adjusted to be in a closed state when the indoor temperature reaches or exceeds a desired value, so that all the water supply in the system pipeline flows into the terminal device of the air conditioner; when the indoor temperature is lower than the expected value, the minimum cold quantity provided by the cold machine is larger than the load required by the tail end, the differential pressure bypass valve is controlled to be automatically adjusted to be in an open state, the opening degree is adjusted according to the load of the tail end, part of water supply in a system pipeline directly flows into the water return pipe through the bypass pipe, and the unnecessary cold quantity at the tail end is sent back into the cold machine through the differential pressure bypass valve, so that the cold quantity flowing into the tail end is controlled more accurately and flexibly, the control of a water system is optimized, and the purpose of.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The energy-saving optimization method of the differential pressure bypass valve based on the terminal load prediction is characterized by comprising the following steps of:
step S1, determining the corresponding regulating target temperature t of the indoor environment0And acquiring the real-time temperature t of the indoor environment1；
Step S2, adjusting the target temperature t0With said real-time temperature t1To adaptively determine the pressure toAn opening degree adjusting mode of the differential bypass valve;
step S3, according to the opening adjusting mode, carrying out corresponding opening changing operation on the differential pressure bypass valve;
step S4, after the opening degree changing operation is finished, the adjustment target temperature t is judged again0With said real-time temperature t1The matching relationship between them.
2. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 1, wherein:
in step S1, the adjustment target temperature t corresponding to the indoor environment is determined0And acquiring the real-time temperature t of the indoor environment1Specifically, the method comprises the following steps of,
step S101, acquiring weather data of an outdoor environment corresponding to the indoor environment, thermal infrared data and carbon dioxide concentration data of the indoor environment;
step S102, determining the adjusting target temperature t according to the weather data, the thermal infrared data and the carbon dioxide concentration data0；
Step S103, collecting real-time zone temperatures corresponding to different position zones of the indoor environment, and calculating to obtain the real-time temperature t1。
3. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 2, wherein:
in the step S101, acquiring weather data about an outdoor environment corresponding to the indoor environment and thermal infrared data and carbon dioxide concentration data about the indoor environment specifically includes,
step S1011, acquiring outdoor temperature data and outdoor humidity data of the outdoor environment in a predetermined time period, and calculating an outdoor average temperature value and an outdoor average humidity value according to the outdoor temperature data and the outdoor humidity data, respectively, as the weather data;
step S1012; acquiring a thermal infrared variable state and a carbon dioxide concentration variable state of the indoor environment in the preset time period, and calculating an indoor thermal infrared average value and a carbon dioxide concentration average value respectively to serve as the thermal infrared data and the carbon dioxide concentration data;
alternatively, the first and second electrodes may be,
in the step S102, the adjustment target temperature t is determined according to the weather data, the thermal infrared data, and the carbon dioxide concentration data0Specifically, the method comprises the following steps of,
step S1021, constructing an indoor temperature regulation demand algorithm model according to the outdoor average temperature value, the outdoor average humidity value, the indoor thermal infrared average value and the carbon dioxide concentration average value;
step S1022, determining the regulation target temperature t according to the indoor temperature regulation demand algorithm model0；
Alternatively, the first and second electrodes may be,
in step S103, real-time area temperatures corresponding to different position areas of the indoor environment are collected, and the real-time temperature t is calculated1Specifically, the method comprises the following steps of,
step S1031, respectively arranging a plurality of temperature sensors with different sensitivities in different position areas of the indoor environment;
step S1032, acquiring a plurality of detection temperature data with a step distribution mode corresponding to the different position areas through the plurality of temperature sensors;
step S1033, calculating the real-time temperature t according to the plurality of detected temperature data1。
4. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 1, wherein:
in the step S2, according to the adjustment target temperature t0With said real-time temperature t1The adaptively determining the opening degree adjusting mode of the differential pressure bypass valve specifically comprises,
step S201, adjusting the target temperature t0With said real-time temperature t1Carrying out size comparison processing to obtain a corresponding size comparison result;
step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0Determining to execute a first opening degree adjustment mode on the differential pressure bypass valve;
step S203, if the magnitude comparison result indicates the real-time temperature t1Less than or equal to the regulation target temperature t0It is determined that the second opening degree adjustment mode is performed for the differential pressure bypass valve.
5. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 4, wherein:
in the step S201, the adjustment target temperature t0With said real-time temperature t1The step of performing a size comparison process to obtain a corresponding size comparison result specifically includes,
step S2011, determining the adjusting target temperature t according to a preset temperature change limit range0With said real-time temperature t1Respective data availability;
step S2012, for the regulated target temperature t with corresponding data availability0With said real-time temperature t1Performing the size comparison processing;
alternatively, the first and second electrodes may be,
in the step S202, if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0The determining of the first opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Greater than the regulation target temperature t0If so, maintaining the current opening state of the differential pressure bypass valve unchanged, and continuously updating the adjustment target temperature t0With said real-time temperature t1To periodically perform the step S201;
in the step S203, if the size comparison result is obtainedIndicating said real-time temperature t1Less than or equal to the regulation target temperature t0The determining of the second opening degree adjustment mode to be executed for the differential pressure bypass valve specifically includes,
if the magnitude comparison result indicates the real-time temperature t1Less than or equal to the regulation target temperature t0And calculating and acquiring an expected opening value of the differential pressure bypass valve, so as to enter the second opening adjusting mode.
6. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 1, wherein:
in step S3, the performing the corresponding opening degree changing operation on the differential pressure bypass valve according to the opening degree adjustment mode specifically includes,
step S301A, acquiring a wind speed parameter and a freezing flow parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger instruction about the opening degree adjusting mode;
step S302A, calculating an expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow parameter;
step S303A, according to the expected opening value, carrying out manual opening change operation or automatic opening change operation on the differential pressure bypass valve;
alternatively, the first and second electrodes may be,
in step S3, the performing the corresponding opening degree changing operation on the differential pressure bypass valve according to the opening degree adjustment mode specifically includes,
step S301B, calculating the opening angle theta corresponding to the differential pressure bypass valve by using the following formula (2),
in the above equation (2), θ represents an opening angle of the differential pressure bypass valve, t1Representing the real-time temperature, t0Represents a regulation target temperature, R represents an inner diameter radius of the differential pressure bypass valve, and f represents the pressureA rotation base force value of the differential pressure bypass valve;
step S302B, calculating the voltage value U required by the opening angle theta corresponding to the differential pressure bypass valve by using the following formula (3),
in the formula (3), U represents a voltage value U required for the opening angle θ corresponding to the differential pressure bypass valve, r represents a resistance value of the differential pressure bypass valve, and I represents a current value of the current corresponding to the differential pressure bypass valve;
step S303B, calculating the power P saved when the opening angle of the differential pressure bypass valve is automatically adjusted by using the following formula (4),
in the above formula (4), P represents the power saved when the opening angle of the differential pressure bypass valve is automatically adjusted, and P represents0Indicating the power value when the differential pressure bypass valve does not automatically adjust the opening angle,
when P <0, switching the differential pressure bypass valve to a non-autoregulation mode,
and when P is larger than or equal to 0, adjusting the differential pressure bypass valve according to a preset opening angle.
7. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 6, wherein:
in step S301A, the obtaining of the wind speed parameter and the freezing flow rate parameter of the air conditioning system corresponding to the differential pressure bypass valve according to the trigger command related to the opening degree adjustment mode specifically includes,
step S3011A, according to the trigger instruction about the opening degree regulation mode, respectively sending a first parameter detection instruction and a second parameter detection instruction to an air outlet unit and a water chilling unit at the tail end of the air conditioning system;
step S3012A, according to the first parameter detection instruction and the second parameter detection instruction, respectively acquiring an air conditioner terminal air speed of the terminal air outlet unit and a refrigeration system flow rate of the chiller unit, to be respectively used as the air speed parameter and the refrigeration flow rate parameter.
8. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 6, wherein:
in step S302A, the calculating the expected opening value corresponding to the differential pressure bypass valve according to the wind speed parameter and the freezing flow parameter specifically includes,
step S3021A, obtaining an air conditioning end air speed V and a refrigeration system flow L of the air conditioning system corresponding to the differential pressure bypass valve from the air speed parameter and the refrigeration flow parameter, respectively;
step S3022A, calculating the expected opening degree value K according to the following formula (1)
K＝(t0-t1)*V*L*D(s)(1)
In the above formula (1), t0For the adjustment of the target temperature, t1Is the real-time temperature of the indoor environment, D(s)The compensation coefficient is preset.
9. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 6, wherein:
in step S303A, the performing, according to the expected opening value, a manual opening changing operation or an automatic opening changing operation on the differential pressure bypass valve specifically includes,
step S3031A, determining whether the expected opening value matches a first opening range or a second opening range, wherein the accuracy of the first opening range is smaller than that of the second opening range;
step 3032A, if the expected opening value matches the first opening range, performing manual opening change operation on the differential pressure bypass valve;
step S3033A, if the expected opening value matches the second opening range, performing an automatic opening change operation on the differential pressure bypass valve.
10. The end load prediction based differential pressure bypass valve energy conservation optimization method of claim 1, wherein:
in the step S4, the adjustment target temperature t is newly determined after the opening degree change operation is completed0With said real-time temperature t1The matching relationship between the two specifically includes,
step S401, determining a completion time point corresponding to the completion of the opening degree change operation, and re-collecting the real-time temperature t of the indoor environment at a preset time interval by taking the completion time point as a starting point1；
Step S402, judging the real-time temperature t of the reacquired indoor environment1And the adjustment target temperature t0The difference Δ t therebetween;
step S403, if the difference value delta t is smaller than or equal to a preset temperature difference range, stopping the current energy-saving optimization method of the differential pressure bypass valve;
and S404, if the difference value delta t is larger than a preset temperature difference range, sequentially and repeatedly executing the steps S1-S3 until the difference value delta t is smaller than or equal to the preset temperature difference range.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678249A (en) * | 2020-06-19 | 2020-09-18 | 广东美的暖通设备有限公司 | Operation control method for air conditioning equipment, air conditioning equipment and storage medium |
| CN113108432A (en) * | 2020-09-09 | 2021-07-13 | 中维通(北京)科技有限公司 | Air conditioning system adjusting method and system based on weather forecast |
| CN114383174A (en) * | 2022-01-13 | 2022-04-22 | 珠海格力电器股份有限公司 | Unit control method and device and unit |
| CN114484748A (en) * | 2022-01-26 | 2022-05-13 | 清华大学 | Air conditioner water system control method and device without differential pressure bypass valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954557A (en) * | 2011-08-31 | 2013-03-06 | 杭州三花研究院有限公司 | Air-conditioning system |
| CN104134100A (en) * | 2014-07-22 | 2014-11-05 | 香港佳能通节能科技有限公司 | Energy-saving management system based on cloud computing |
| CN104633867A (en) * | 2015-02-28 | 2015-05-20 | 广东美的暖通设备有限公司 | Combined computer-room air conditioning system and control method thereof |
| CN104729024A (en) * | 2015-04-08 | 2015-06-24 | 南京优助智能科技有限公司 | Air conditioning load prediction method based on indoor average temperature |
| CN106091341A (en) * | 2016-06-02 | 2016-11-09 | 青岛海尔空调器有限总公司 | Air conditioner supplying natural wind temperature control method |
| US20170292726A1 (en) * | 2014-11-12 | 2017-10-12 | Mitsubishi Electric Corporation | Air-conditioning management apparatus and air-conditioning system |
| CN108240679A (en) * | 2018-02-22 | 2018-07-03 | 烟台科创捷能机电工程有限公司 | A kind of heat supply method based on building heating load prediction, device and system |
| CN109654660A (en) * | 2018-12-24 | 2019-04-19 | 美的集团武汉制冷设备有限公司 | Air conditioner and its control method and device |
| CN110410942A (en) * | 2019-07-30 | 2019-11-05 | 上海朗绿建筑科技股份有限公司 | A kind of Cooling and Heat Source machine room energy-saving optimal control method and system |
-
2019
- 2019-12-31 CN CN201911410620.1A patent/CN111047117B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954557A (en) * | 2011-08-31 | 2013-03-06 | 杭州三花研究院有限公司 | Air-conditioning system |
| CN104134100A (en) * | 2014-07-22 | 2014-11-05 | 香港佳能通节能科技有限公司 | Energy-saving management system based on cloud computing |
| US20170292726A1 (en) * | 2014-11-12 | 2017-10-12 | Mitsubishi Electric Corporation | Air-conditioning management apparatus and air-conditioning system |
| CN104633867A (en) * | 2015-02-28 | 2015-05-20 | 广东美的暖通设备有限公司 | Combined computer-room air conditioning system and control method thereof |
| CN104729024A (en) * | 2015-04-08 | 2015-06-24 | 南京优助智能科技有限公司 | Air conditioning load prediction method based on indoor average temperature |
| CN106091341A (en) * | 2016-06-02 | 2016-11-09 | 青岛海尔空调器有限总公司 | Air conditioner supplying natural wind temperature control method |
| CN108240679A (en) * | 2018-02-22 | 2018-07-03 | 烟台科创捷能机电工程有限公司 | A kind of heat supply method based on building heating load prediction, device and system |
| CN109654660A (en) * | 2018-12-24 | 2019-04-19 | 美的集团武汉制冷设备有限公司 | Air conditioner and its control method and device |
| CN110410942A (en) * | 2019-07-30 | 2019-11-05 | 上海朗绿建筑科技股份有限公司 | A kind of Cooling and Heat Source machine room energy-saving optimal control method and system |
Non-Patent Citations (2)
| Title |
|---|
| LIU, FEI; HUANG, HU; MA, YINGJIANG; AND ZHUANG, RONG: "Research on the Air Conditioning Water Heater System", 《INTERNATIONAL REFRIGERATION AND AIR CONDITIONING CONFERENCE》 * |
| 刘雪峰: "中央空调冷源系统变负荷运行控制机理与应用研究", 《中国博士学位论文全文数据库工程科技II辑》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678249A (en) * | 2020-06-19 | 2020-09-18 | 广东美的暖通设备有限公司 | Operation control method for air conditioning equipment, air conditioning equipment and storage medium |
| CN113108432A (en) * | 2020-09-09 | 2021-07-13 | 中维通(北京)科技有限公司 | Air conditioning system adjusting method and system based on weather forecast |
| CN114383174A (en) * | 2022-01-13 | 2022-04-22 | 珠海格力电器股份有限公司 | Unit control method and device and unit |
| CN114484748A (en) * | 2022-01-26 | 2022-05-13 | 清华大学 | Air conditioner water system control method and device without differential pressure bypass valve |
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