CN117073128B - Building temperature control method, device and system - Google Patents

Building temperature control method, device and system Download PDF

Info

Publication number
CN117073128B
CN117073128B CN202311352071.3A CN202311352071A CN117073128B CN 117073128 B CN117073128 B CN 117073128B CN 202311352071 A CN202311352071 A CN 202311352071A CN 117073128 B CN117073128 B CN 117073128B
Authority
CN
China
Prior art keywords
temperature
power
target point
adjusting
freezing
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
Application number
CN202311352071.3A
Other languages
Chinese (zh)
Other versions
CN117073128A (en
Inventor
朱振驰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Weizhi Intelligent Technology Co ltd
Original Assignee
Shenzhen Weizhi Intelligent Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Weizhi Intelligent Technology Co ltd filed Critical Shenzhen Weizhi Intelligent Technology Co ltd
Priority to CN202311352071.3A priority Critical patent/CN117073128B/en
Publication of CN117073128A publication Critical patent/CN117073128A/en
Application granted granted Critical
Publication of CN117073128B publication Critical patent/CN117073128B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The present invention relates to the field of temperature control technologies, and in particular, to a building temperature control method, device, and system. The method includes monitoring the temperature T of each set point i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i The method comprises the steps of carrying out a first treatment on the surface of the For each target point, a first order adjustment is performed: adjusting the running power of the fan of the target point; after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the operating power of the cryopump; and after a preset time s, performing secondary adjustment or tertiary adjustment according to the change condition of the operating power of the freezing pump: the operating power of the cooling tower or compressor is regulated. By the aid of the method, the problem that the operating power of the building temperature system cannot be adjusted in a targeted mode according to the actual environment temperature and the internal temperature in the building temperature system is solved.

Description

Building temperature control method, device and system
Technical Field
The present invention relates to the field of temperature control technologies, and in particular, to a building temperature control method, device, and system.
Background
Building ventilation systems are an important component in buildings for regulating indoor air quality and comfort. The building ventilation system can be integrated with a refrigerating system to form a building temperature control system which can realize refrigeration and ventilation.
Currently, devices in a building temperature system use respective rated powers as operation powers, and if the operation powers are to be adjusted, the adjustment can only be performed according to subjective consciousness of operators.
This does not allow for targeted adjustment of the building temperature system based on the actual ambient temperature and the internal temperature in the building temperature system.
Disclosure of Invention
Based on this, it is necessary to provide a building temperature control method, device and system for the above-mentioned problems.
The embodiment of the invention is realized in such a way that the building temperature control method comprises the following steps:
monitoring the temperature T of each setpoint i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
For each target point, a first order adjustment is performed: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
after a preset time s, according to the change condition of the operating power of the freezing pump, three-stage adjustment is performed: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
if the running power of the freezing pump is reduced, judging whether a is smaller than or equal to a first preset value, if yes, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value, if yes, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
If the operating power of the cryopump is not changed, performing a secondary adjustment;
where i is the sequence number of the setpoint.
In one embodiment, the present invention provides a building temperature control apparatus comprising:
a target point and a flow rate determining module for monitoring the temperature T of each set point i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
A primary adjustment module for performing primary adjustment for each target point: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
the secondary adjusting module is used for executing secondary adjustment after a preset time s passes after each time of distributing the chilled water flow of the coil pipe of the target point: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
the first module of tertiary regulation is used for carrying out tertiary regulation according to the change condition of the operating power of the refrigerating pump after a preset time s: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
The third-stage adjusting second module is used for judging whether a is smaller than or equal to a first preset value if the running power of the freezing pump is reduced, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value if the running power of the freezing pump is reduced, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe if the running power of the freezing pipe is reduced, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
a third module for tertiary regulation, which is used for executing secondary regulation if the running power of the freezing pump is not changed;
where i is the sequence number of the setpoint.
In one embodiment, the present invention provides a building temperature control system comprising an execution module and a control module;
the execution module comprises a fan, a coil pipe, a freezing pump, a cooling pipe, a cooling pump, a cooling tower and a compressor;
each set point is provided with a fan and corresponding coils, water inlets of all coils are connected with water outlets of the freezing pipes, and water outlets of all coils are connected with water return ports of the freezing pipes;
The freezing pipe is connected with the coil pipe and the freezing pump in series to form a freezing loop;
the cooling pipe is connected with the cooling pump and the cooling tower in series to form a cooling loop;
the compressor is used for heat exchange of the refrigerating circuit and the cooling circuit;
the control module is used for executing the building temperature control method so as to control the execution module.
The building temperature control method provided by the embodiment of the invention monitors the temperature T of each set point i According to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i The method comprises the steps of carrying out a first treatment on the surface of the For each target point, a first order adjustment is performed: adjusting the running power of the fan of the target point; after each distribution of the chilled water flow of the coil at the target point, passingA preset time s, performing a secondary adjustment: adjusting the operating power of the cryopump; and after a preset time s, performing secondary adjustment or tertiary adjustment according to the change condition of the operating power of the freezing pump: the operating power of the cooling tower or compressor is regulated. By the aid of the method, the operating power of the building temperature system is regulated in multiple stages, and the problem that the operating power of the building temperature system cannot be regulated in a targeted mode according to the actual environment temperature and the internal temperature in the building temperature system is solved.
Drawings
FIG. 1 is a flow chart of a method of building temperature control in one embodiment;
FIG. 2 is a logic diagram of a method of building temperature control in one embodiment;
FIG. 3 is a block diagram of a building temperature control device in one embodiment;
FIG. 4 is a block diagram of a building temperature control system provided in one embodiment;
FIG. 5 is a block diagram of the internal architecture of a control module in one embodiment.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another element. For example, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script, without departing from the scope of this disclosure.
As shown in fig. 1 and fig. 2, in one embodiment, a building temperature control method is provided, which specifically includes the following steps:
monitoring the temperature T of each setpoint i Every other onePreset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
For each target point, a first order adjustment is performed: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
after a preset time s, according to the change condition of the operating power of the freezing pump, three-stage adjustment is performed: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
If the running power of the freezing pump is reduced, judging whether a is smaller than or equal to a first preset value, if yes, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value, if yes, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
if the operating power of the cryopump is not changed, performing a secondary adjustment;
where i is the sequence number of the setpoint.
In this embodiment, the set point is an area, such as a room, where fans are located.
In this embodiment, the fan at each set point is opposite to the coil, and when chilled water is in the coil, the fan rapidly decreases the temperature of the target point through the flow of air, so that every preset period, the temperature of the target point and the chilled water flow rate of the coil to which the target point is allocated need to be redetermined every other preset period.
In this embodiment, the preset temperature of each set point is usually the average temperature of the set point in the idle state, the preset temperature is set manually, and should conform to the practical situation, for example, the temperature of the set point with more people may be lower, the temperature of the set point with fewer people may be higher, because the building temperature control system is mainly used for cooling, and in combination with the practical situation, the preset temperature may be set to a temperature suitable for the human body in the range of 24-26 °. When the preset temperature of any one set point is changed, the temperature of the target point and the chilled water flow of the coil for distributing the target point are redetermined, and the preset period is redecalculated by taking the moment as a starting point.
In this embodiment, the target point is a set point that needs to be cooled, for example, a room that needs to be cooled.
In this embodiment, each set point coil has an independent solenoid valve controlled open, and the amount of chilled water flow through the coil is positively correlated to the amount of solenoid valve open.
In this embodiment, i is the serial number of the set point, and not the serial number of the target point. For example, the first set point has a temperature T 1 The preset temperature is A 1 If it is determined as the target point, the chilled water flow rate of the coil allocated to the target point is q 1 The method comprises the steps of carrying out a first treatment on the surface of the If the second setpoint is determined not to be the target point, then there is no chilled water flow to the coils of the setpoint; if the third setpoint is determined to be the target point, then the chilled water flow rate of the coil assigned to the target point is q 3 Not q 2 。
In this embodiment, for non-target points, the fan is not activated and chilled water is not dispensed to the coils at that set point.
In this embodiment, the rotation speed of the blower can be changed by adjusting the operation power of the blower, so that the circulation speed of air is changed, and the temperature change speed of the target point is changed.
In the present embodiment, q i If the value of (1) is not changed, continuing to monitor T i The temperature of the target point and the chilled water flow of the coil dispensing the target point are continuously determined every other preset period.
In this embodiment, the target point is determined q after every other preset period i The value of (2) may change.
In this embodiment, the water return port of the freezing pipe is connected to the water outlet of each coil, and the chilled water in the freezing pipe absorbs heat and cools down to the temperature of the target point through the target point, so the water return port temperature of the freezing pipe is higher than the water outlet temperature of the freezing pipe.
In this embodiment, each time the chilled water flow of the coil at the target point is distributed, that is, q is distributed after the target point is determined every preset period i Regardless of q i The values of (2) are all distributed to the coil cooling water flow of the target point or not.
In this embodiment, for the preset time s, which is essentially the time required for one cycle of the chilled water cycle, because the flow rate of the chilled water is affected by the rotational speed of the chilled pump, the preset time s may be selected for ease of calculation to be the time required for one cycle of the chilled water cycle when the chilled pump is rated and running.
In this embodiment, during operation, the value of the water return port temperature B of the freezing pipe is greater than the value of the water outlet temperature C of the freezing pipe, so the temperature difference a between the two is a positive number.
In this embodiment, the first preset value may be a temperature difference between B and C when the average temperature of the set point is 26 ° and each device operates at its rated power.
In this embodiment, the operating power of the cryopump is related to the rotational speed of the cryopump, the faster the operating power of the cryopump, the faster the rotational speed, and the faster the chilled water flow rate.
In this embodiment, there are three situations in which the operating power of the cryopump is regulated: the operating power is increased, decreased or unchanged, and three different steps are performed for three different conditions.
In this embodiment, if the operating power of the cryopump increases, if a is not greater than the first preset value, it is proved that the required temperature difference range can be reached by adjusting the operating power of the cryopump, and the operation is stable in the current state, that is, the operating power of the cryopump is maintained unchanged.
In this embodiment, if the operating power of the cryopump is reduced, a is less than or equal to a first preset value and B is less than or equal to a second preset value, it is proved that the required temperature difference range can be reached by adjusting the operating power of the cryopump, and the operation is stable in the current state at this time, that is, the operating power of the cryopump is maintained unchanged at this time.
In this embodiment, the second preset value may be a temperature value of B when the average temperature of the set point is 26 ° at the respective rated power of each device.
In this embodiment, if the operating power of the cryopump is not changed, the second-stage adjustment is performed, and after the second-stage adjustment is performed, a preset time s elapses, and the third-stage adjustment is performed again according to the change condition of the operating power of the cryopump.
The building temperature control method provided by the embodiment of the invention monitors the temperature T of each set point i According to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i The method comprises the steps of carrying out a first treatment on the surface of the For each target point, a first order adjustment is performed: adjusting the running power of the fan of the target point; after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the operating power of the cryopump; and after a preset time s, performing secondary adjustment or tertiary adjustment according to the change condition of the operating power of the freezing pump: the operating power of the cooling tower or compressor is regulated. By the aid of the method, the operating power of the building temperature system is regulated in multiple stages, and the problem that the operating power of the building temperature system cannot be regulated in a targeted mode according to the actual environment temperature and the internal temperature in the building temperature system is solved.
In one placeIn one embodiment, the said every other preset period is according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i Comprising:
every other preset period, byObtaining the temperature difference d of each set point i ；
For each set point, determine d i If the set point is larger than 0, marking the set point as a target point;
accumulating d corresponding to each target point i Obtaining a sum D of the temperature differences;
for each target point, byObtaining the chilled water flow q of the coil allocated to the target point i ；
Where Q is the total chilled water flow of the freezer pipe.
In the present embodiment, since the target point is a set point requiring cooling, when T i Greater than A i The set point can be judged as the target point.
In the present embodiment, if d i Less than or equal to 0, d i Will not be accumulated. Say d 1 Greater than 0, d 2 Less than 0, d 3 Greater than 0, then d 1 And d 3 Will be accumulated.
In the present embodiment, if d 2 Less than 0, is not accumulated, then q is not present 2 。
In one embodiment, the method is according to T i And a preset temperature A for each set point i Adjusting the operating power of the fan at the target point, comprising:
from the following componentsObtaining the running power P of the fan of the target point i ；
Wherein t is i To carry out the monitored temperature, p, of each target point at the initial moment of the primary regulation 0 Rated power of fan, p 1 Is the maximum excess power of the blower.
In this embodiment, the fan is initially operated at a maximum excess power, typically 1.2 times the rated power, for the target point, soGreater than 0.
In this embodiment, as the temperature decreases, the fan power gradually decreases from the maximum excess power to the rated power.
In the present embodiment, T i 、A i And t i Are all dependent on the target point, p 0 And p 1 The same is true for all fans.
In the present embodiment, the requirement determined as the target point is d i Greater than 0, soGreater than 0.
In the present embodiment, when T i Equal to A i At the time P i Equal to rated power p 0 When T i Less than A i At the time P i Less than rated power p 0 。
In this embodiment, from a practical point of view, the system is used for cooling, so A i Is a positive number, T i Is also a positive number, so P i And is also a positive value.
In one embodiment, the said reference q i And the running power of the fan of the target point is regulated by the water return port temperature B of the freezing pipe, and the method comprises the following steps:
judgment q i If become large, if q i Judging whether the temperature B of the water return port of the freezing pipe is reduced or unchanged;
If the temperature B of the water return port of the freezing pipe is reduced or unchanged, the temperature B is reducedObtaining the objectUp-to-date operating power E of point fans i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
If the temperature B of the water return port of the freezing pipe is increased, adjusting the running power of the fan of the target point according to the temperature difference of the water temperature of the inlet and the outlet of the coil of the target point;
if q i Judging whether the temperature B of the water return port of the freezing pipe is increased or not;
if the temperature B of the water return port of the freezing pipe is increased or unchanged, the water return port is formed byObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
If the temperature B of the water return port of the freezing pipe is reduced, the operation power of the fan of the target point is adjusted according to the temperature difference of the water temperature of the inlet and the outlet of the coil pipe of the target point.
In the present embodiment, q i When the target point is enlarged, the chilled water flowing through the target point is increased, the chilled water is gathered to the water return port of the freezing pipe through the coil pipe, and the B is reduced or unchanged, the chilled water is proved to be unchanged or reduced in heat absorption in the process of passing through the coil pipe, the power of the fan can be further reduced, the reduction amplitude is half of the difference value between the current power and the rated power, namely . If at this time P i Has been smaller than p 0 There is no need to further reduce the power of the fan, i.e. by an amplitude of 0.
In the present embodiment, q i Without becoming large, thenThe chilled water flowing through the target point is reduced or unchanged, and B is enlarged or unchanged after the chilled water is collected to the water return port of the freezing pipe through the coil pipe, so that the chilled water absorbs heat to be enlarged or unchanged in the process of the chilled water passing through the coil pipe, the power of the fan can be further increased, the increasing amplitude is half of the difference value between the maximum excess power and the current power, namely. At this time, the operation power of the fan is reduced along with the reduction of the temperature, P i Less than p 1 Therefore->Greater than 0.
In the present embodiment, if q i Become larger, B becomes larger, or q i And B is smaller, so that the change of the heat absorption condition of the chilled water in the process of passing through the coil cannot be determined, and the running power of the target point fan is regulated through the temperature difference of the water at the inlet and the outlet of the coil.
In one embodiment, the adjusting the operation power of the fan at the target point according to the temperature difference of the water temperature of the coil inlet and outlet of the target point includes:
subtracting the water temperature at the inlet of the coil from the water temperature at the outlet of the coil to obtain water Wen Wencha b at the inlet and outlet of the coil;
Obtaining a water temperature difference a of the freezing pipe from a water return port temperature B of the freezing pipe and a water outlet temperature C of the freezing pipe;
judging whether the difference value l of b minus a is larger than a third preset value, if so, judging whether the difference value l of b minus a is larger than the third preset valueObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
If not, then byObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
Wherein m is a third preset value.
In this embodiment, the value of b is theoretically the same as the value of a, but in practice there is a difference between a and b, mainly due to the heat absorption of the coil. For any coil, if the difference between a and b is larger, the heat absorption rate is larger, and the temperature can be reduced more effectively, but considering the influence of the balance and stability of the whole system, the temperature difference of the single coil is not excessively large, so that a third preset value needs to be set as a judging condition, for example, the third preset value can be 5 degrees.
In this embodiment, when l is greater than or equal to the third preset value, the ventilation of air needs to be reduced, that is, the rotation speed of the corresponding fan is reduced, that is, the running power of the fan is reduced; when l is smaller than a third preset value, the circulation of air is enhanced, namely the rotating speed of the corresponding fan is increased, namely the running power of the fan is increased.
In the present embodiment of the present invention, in the present embodiment,cannot be greater than p 1 If greater than p 1 Then use p 1 As the operating power of the fan.
In one embodiment, the adjusting the operating power of the cryopump according to the temperature difference a between the water return port temperature B of the cryopipe and the water outlet temperature C of the cryopipe and the first preset value includes:
obtaining a water temperature difference a of the freezing pipe from a water return port temperature B of the freezing pipe and a water outlet temperature C of the freezing pipe;
judging whether a is larger than a first preset value, if a is larger than the first preset value, judging whether C is larger, if so, increasing the running power of the refrigerating pump to be the same as that of the first preset value；
If C is not increased, keeping the running power of the refrigeration pump unchanged;
if a is not greater than the first preset value, judging whether the water return port temperature B of the freezing pipe is smaller, if so, reducing the running power of the freezing pump to be the same as that of the freezing pipe；
If B is not reduced, keeping the running power of the refrigeration pump unchanged;
where k is a preset coefficient and G is the rated power of the cryopump.
In this embodiment, the initial operating power of the cryopump is the rated operating power of the cryopump.
In this embodiment, if a is greater than the first preset value, it is indicated that the heat absorption amount of the chilled water passing through each target point is increased, and the demand for cooling is increased. If C is bigger, the heat absorbing capacity of the chilled water is smaller, and at the moment, the running power of the chilled pump is increased to increase the rotating speed of the chilled pump, so that the flow rate of the chilled water is increased to increase the heat absorbing capacity of the chilled water. If C is not enlarged, the cooling requirement can be improved by means of cooling of the fan, and the running power of the refrigerating pump is not required to be increased.
In this embodiment, if a is not greater than the first preset value, it indicates that the heat absorption amount of the chilled water passing through each target point is reduced or unchanged, and at this time, the demand for cooling is reduced or unchanged. If B becomes smaller, the heat absorption amount of the chilled water becomes smaller, and at this time, the operation power of the chilled pump is reduced to reduce the rotation speed of the chilled pump, thereby slowing down the flow rate of the chilled water to increase the heat absorption amount of the chilled water. If B is not reduced, maintaining the running power of the freezing pump unchanged.
In this embodiment, generally, the maximum operating power of the cryopump is 1.2 times the rated power, so k ranges from 0 to 0.2.
In one embodiment, the determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power includes:
s701, obtaining the deviation H between the current operating power of the cooling tower and the rated power of the cooling tower from the difference value of the current operating power and the rated power of the cooling tower 1 ；
S702, obtaining the deviation H between the current running power of the compressor and the rated power of the compressor from the difference value of the current running power and the rated power of the compressor 2 ；
S703, determining the minimum adjustment power I of the cooling tower according to the water return port temperature B of the freezing pipe 1 And minimum regulated power I of the compressor 2 ；
S704, compareAnd->The size of (1)>Less than or equal to->The current operating power of the cooling tower is adjusted to be I 1 The latter value is used as the latest operating power of the cooling tower;
s705 ifIs greater than->The current running power of the compressor is adjusted to be I 2 The latter value is taken as the latest running power of the compressor;
s706, after a preset time S, judging whether the water outlet temperature C of the freezing pipe is smaller than or equal to a fourth preset value, and if not, repeating S701-S705 until the water outlet temperature C of the freezing pipe is smaller than or equal to the fourth preset value.
In this embodiment, the cooling towers or compressors each have a power lower than the respective rated power as the respective initial operating power.
In this embodiment, if the operating power of the cryopump increases, adjusting the operating power of the cooling tower or compressor means increasing the operating power of the cooling tower or compressor. At this time H in S701 1 Reduction of the current operating power of a cooling towerRated power of the cooling tower is obtained, H in S702 2 From the current operating power of the compressor minus the rated power of the compressor, step S704 is to increase I by the current operating power of the cooling tower 1 The latest operating power of the cooling tower is then used as the current operating power of the compressor to increase I in S705 2 And then serves as the latest operating power of the compressor.
In this embodiment, if the operating power of the cryopump is reduced, adjusting the operating power of the cooling tower or compressor refers to reducing the operating power of the cooling tower or compressor. At this time H in S701 1 The current operating power of the cooling tower is subtracted from the rated power of the cooling tower, H in S702 2 The current operating power of the compressor is subtracted from the rated power of the compressor, and the current operating power of the cooling tower is reduced by I in S704 1 The latest operating power of the cooling tower is then used as the current operating power of the compressor to increase I in S705 2 And then serves as the latest operating power of the compressor.
In this embodiment, the compressor and the cooling tower both cool the cooling water in the cooling pipe, and the cooling is fast when the operating power is high, and the cooling is slow when the operating power is low. For the same case of a variation in the operating power of the cryopump, the direction of adjustment of the operating power of the compressor and of the cooling tower should be identical.
In the present embodiment, only one of the compressor and the cooling tower is selected as the adjustment target for each adjustment.
In this embodiment, in order to ensure that the adjustment amplitude is small, a device requiring a small ratio of the minimum adjustment power to the deviation is the adjustment target.
In the present embodiment, if H 1 Or H 2 One of the values is 0, then compare I 1 And I 2 If the size of I 1 Less than or equal to I 2 The current operating power of the cooling tower is adjusted to be I 1 The latter value is used as the latest operating power of the cooling tower; if I 1 Greater than I 2 The current running power of the compressor is adjusted to be I 2 The latter value is taken as the latest operating power of the compressor.
In this embodiment, the fourth preset value may be a temperature value at which each device operates at its rated power and the average temperature of the set point is 26 ℃. The adjustment of the compressor or cooling tower mainly affects the value of C, so the value of C is used as the judgment basis.
In this embodiment, each preset period allocates the flow rate of the chilled water of the coil at the target point, after a preset time s, the second-stage adjustment is performed, after a preset time s, the third-stage adjustment is performed according to the change condition of the running power of the chilled pump, in the third-stage adjustment, if the running power of the cooling tower or the compressor is adjusted, it is required to determine whether the water outlet temperature C of the chilled pipe is less than or equal to a fourth preset value after at least one preset time s, so that each preset period at least passes 3 preset times, and in consideration of the third-stage adjustment, a plurality of preset times s may pass, and each preset period may be set to 5 preset times.
In one embodiment, the minimum adjustment power I of the cooling tower is determined according to the water return port temperature B of the freezing pipe 1 And minimum regulated power I of the compressor 2 Comprising:
from the following componentsObtaining the heat W required by the temperature adjustment of the freezing pipe 1 ；
From W 1 And the conversion efficiency of the cooling tower to the freezing pipe to obtain the heat W required by the temperature adjustment of the cooling tower 2 ；
According to the power and W of the cooling tower 2 To determine the power I that the cooling tower needs to adjust 3 ；
Will I 3 Dividing into n parts to obtain the minimum adjustment power I of the cooling tower 1 ；
According to compressor power and W 1 To determine the power I that the compressor needs to adjust 4 ；
Will I 4 Dividing into n parts to obtain the minimum adjustment power I of the compressor 2 ；
Wherein m is the mass of water in the freezing pipe, c is the specific heat capacity of water, and K is the difference of the water return port temperature B of the freezing pipe minus a second preset value.
In the present embodiment, W 1 The heat required for the return water port temperature B of the freezing pipe to be reduced to a second preset value.
In this embodiment, the conversion efficiency of the cooling tower to the freezing pipe is a fixed value, which can be simply obtained.
In the present embodiment, the cooling tower power and W 2 Corresponding table of compressor power and W 1 The corresponding table of (2) is two existing comparison tables, on which the generation of W can be found 2 Corresponding cooling tower power, W generation 1 Corresponding compressor power. Given the operating power of the cooling tower and the compressor, I can be determined 3 、I 4 。
In this embodiment, if each preset period is set to five preset times, the total time of three-level adjustment is 3 preset times, and assuming that 3 preset times are all adjustment objects, the value of n may be set to 3.
As shown in fig. 3, in one embodiment, a building temperature control device is provided, which may specifically include:
a target point and a flow rate determining module for monitoring the temperature T of each set point i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
A primary adjustment module for performing primary adjustment for each target point: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
the secondary adjusting module is used for executing secondary adjustment after a preset time s passes after each time of distributing the chilled water flow of the coil pipe of the target point: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
The first module of tertiary regulation is used for carrying out tertiary regulation according to the change condition of the operating power of the refrigerating pump after a preset time s: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
the third-stage adjusting second module is used for judging whether a is smaller than or equal to a first preset value if the running power of the freezing pump is reduced, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value if the running power of the freezing pump is reduced, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe if the running power of the freezing pipe is reduced, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
a third module for tertiary regulation, which is used for executing secondary regulation if the running power of the freezing pump is not changed;
where i is the sequence number of the setpoint.
In this embodiment, each module of the building temperature control device is modularized in the method of the present invention, and for specific explanation of each module, please refer to the corresponding content in the method of the present invention, the embodiments of the present invention are not described herein again.
As shown in fig. 4, in one embodiment, a building temperature control system is provided that includes an execution module and a control module;
the execution module comprises a fan, a coil pipe, a freezing pump, a cooling pipe, a cooling pump, a cooling tower and a compressor;
each set point is provided with a fan and corresponding coils, water inlets of all coils are connected with water outlets of the freezing pipes, and water outlets of all coils are connected with water return ports of the freezing pipes;
the freezing pipe is connected with the coil pipe and the freezing pump in series to form a freezing loop;
the cooling pipe is connected with the cooling pump and the cooling tower in series to form a cooling loop;
the compressor is used for heat exchange of the refrigerating circuit and the cooling circuit;
the control module is used for executing the building temperature control method so as to control the execution module.
In this embodiment, the coils at each set point are arranged in parallel, each coil being controlled by a separate solenoid valve to control the size of the valve opening.
In this embodiment, the fan of setpoint is just to the coil pipe, and the circulation of air is accelerated after the chilled water flows through the coil pipe, makes the chilled water absorb heat fast, reduces the temperature of setpoint.
In this embodiment, a circulation loop exists in the compressor, a refrigerant exists in the circulation loop, heat exchange is performed between the refrigeration loop and the refrigerant in the circulation loop of the compressor, the temperature of the refrigerant rises, and the temperature of chilled water in the refrigeration loop drops.
In this embodiment, the cooling circuit exchanges heat with the refrigerant in the circulation circuit of the compressor, the temperature of the refrigerant decreases, and the temperature of the cooling water in the cooling circuit increases.
In this embodiment, the cooling water in the cooling pipe is cooled down in the cooling tower.
In this embodiment, the connection between the control module and the execution module is a communication connection, and the control module controls the operation power of the blower, the compressor, and the cooling tower.
In the present embodiment, the operation power of the cooling tower refers to the operation power of the cooling fan.
The building temperature control system provided by the embodiment of the invention monitors the temperature T of each set point i According to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i The method comprises the steps of carrying out a first treatment on the surface of the For each target point, a first order adjustment is performed: adjusting the running power of the fan of the target point;after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the operating power of the cryopump; and after a preset time s, performing secondary adjustment or tertiary adjustment according to the change condition of the operating power of the freezing pump: the operating power of the cooling tower or compressor is regulated. By the aid of the method, the operating power of the building temperature system is regulated in multiple stages, and the problem that the operating power of the building temperature system cannot be regulated in a targeted mode according to the actual environment temperature and the internal temperature in the building temperature system is solved.
FIG. 5 illustrates an internal block diagram of a control module in one embodiment. As shown in fig. 5, the control module includes a processor, a memory, and a communication interface connected by a system bus. The memory includes a nonvolatile storage medium and an internal memory. The non-volatile storage medium of the control module stores an operating system and also stores a computer program which, when executed by a processor, can cause the processor to implement the building temperature control method provided by the embodiment of the invention. The internal memory may also store a computer program, which when executed by the processor, causes the processor to execute the building temperature control method provided by the embodiment of the invention.
It will be appreciated by those skilled in the art that the structure shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the control module to which the present inventive arrangements are applied, and that a particular control module may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the building temperature control device provided in the embodiment of the present invention may be implemented in the form of a computer program, which may run on a control module as shown in fig. 5. The memory of the control module may store various program modules constituting the building temperature control device, such as the target point and flow determination module, the primary adjustment module, the secondary adjustment module, the tertiary adjustment first module, the tertiary adjustment second module, and the tertiary adjustment third module shown in fig. 4. The computer program of each program module causes the processor to execute the steps in the building temperature control method of each embodiment of the invention described in the present specification.
For example, the control module shown in fig. 5 may execute step S101 through the target point and the flow determination module in the building temperature control apparatus shown in fig. 4; the control module can execute step S102 through the primary adjusting module; the control module can execute step S103 through the secondary adjusting module; the control module may execute step S104 by three-stage adjustment of the first module; the control module can execute step S105 by three-stage adjustment of the second module; the control module may execute step S106 by adjusting the third module in three stages.
In one embodiment, a control module is provided, the control module including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the following steps when executing the computer program:
monitoring the temperature T of each setpoint i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
For each target point, a first order adjustment is performed: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
after a preset time s, according to the change condition of the operating power of the freezing pump, three-stage adjustment is performed: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
if the running power of the freezing pump is reduced, judging whether a is smaller than or equal to a first preset value, if yes, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value, if yes, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
If the operating power of the cryopump is not changed, performing a secondary adjustment;
where i is the sequence number of the setpoint.
In one embodiment, a computer readable storage medium is provided, having a computer program stored thereon, which when executed by a processor causes the processor to perform the steps of:
monitoring the temperature T of each setpoint i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
For each target point, a first order adjustment is performed: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
after a preset time s, according to the change condition of the operating power of the freezing pump, three-stage adjustment is performed: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
If the running power of the freezing pump is reduced, judging whether a is smaller than or equal to a first preset value, if yes, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value, if yes, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
if the operating power of the cryopump is not changed, performing a secondary adjustment;
where i is the sequence number of the setpoint.
It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in various embodiments may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.
Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.

Claims (10)

1. A building temperature control method, the building temperature control method comprising:
monitoring the temperature T of each setpoint i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
For each target point, a first order adjustment is performed: according to T i And pre-set point per set pointSetting temperature A i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
after each dispensing of the chilled water flow of the coil at the target point, a preset time s passes, performing a secondary adjustment: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
after a preset time s, according to the change condition of the operating power of the freezing pump, three-stage adjustment is performed: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
if the running power of the freezing pump is reduced, judging whether a is smaller than or equal to a first preset value, if yes, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value, if yes, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
If the operating power of the cryopump is not changed, performing a secondary adjustment;
where i is the sequence number of the setpoint.
2. The building temperature control method according to claim 1, wherein every other preset period is according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i Comprising:
every other preset period, byObtaining the temperature difference d of each set point i ；
For each set point, determine d i If the set point is larger than 0, marking the set point as a target point;
accumulating d corresponding to each target point i Obtaining a sum D of the temperature differences;
for each target point, byObtaining the chilled water flow q of the coil allocated to the target point i ；
Where Q is the total chilled water flow of the freezer pipe.
3. The building temperature control method according to claim 1, wherein the temperature control method is based on T i And a preset temperature A for each set point i Adjusting the operating power of the fan at the target point, comprising:
from the following componentsObtaining the running power P of the fan of the target point i ；
Wherein t is i To carry out the monitored temperature, p, of each target point at the initial moment of the primary regulation 0 Rated power of fan, p 1 Is the maximum excess power of the blower.
4. A building temperature control method according to claim 3, wherein the said reference q i And the running power of the fan of the target point is regulated by the water return port temperature B of the freezing pipe, and the method comprises the following steps:
judgment q i If become large, if q i Judging whether the temperature B of the water return port of the freezing pipe is reduced or unchanged;
if the temperature B of the water return port of the freezing pipe is reduced or unchanged, the temperature B is reducedObtainingLatest operating power E of fan of target point i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
If the temperature B of the water return port of the freezing pipe is increased, adjusting the running power of the fan of the target point according to the temperature difference of the water temperature of the inlet and the outlet of the coil of the target point;
if q i Judging whether the temperature B of the water return port of the freezing pipe is increased or not;
if the temperature B of the water return port of the freezing pipe is increased or unchanged, the water return port is formed byObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
If the temperature B of the water return port of the freezing pipe is reduced, the operation power of the fan of the target point is adjusted according to the temperature difference of the water temperature of the inlet and the outlet of the coil pipe of the target point.
5. The building temperature control method according to claim 4, wherein the adjusting the operation power of the fan of the target point according to the temperature difference of the water temperature of the coil inlet and outlet of the target point comprises:
subtracting the water temperature at the inlet of the coil from the water temperature at the outlet of the coil to obtain water Wen Wencha b at the inlet and outlet of the coil;
obtaining a water temperature difference a of the freezing pipe from a water return port temperature B of the freezing pipe and a water outlet temperature C of the freezing pipe;
judging whether the difference value l of b minus a is larger than a third preset value, if so, judging whether the difference value l of b minus a is larger than the third preset valueObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
If not, then byObtaining the latest operating power E of the fan of the target point i Determining the temperature e of the current target point i ；
From the following componentsObtaining the running power F of the fan of the target point i ；
Wherein m is a third preset value.
6. The building temperature control method according to claim 1, wherein the adjusting the operating power of the cryopump according to the temperature difference a between the water return port temperature B of the cryopipe and the water outlet temperature C of the cryopipe and the first preset value includes:
obtaining a water temperature difference a of the freezing pipe from a water return port temperature B of the freezing pipe and a water outlet temperature C of the freezing pipe;
Judging whether a is larger than a first preset value, if a is larger than the first preset value, judging whether C is larger, if so, increasing the running power of the refrigerating pump to be the same as that of the first preset value；
If C is not increased, keeping the running power of the refrigeration pump unchanged;
if a is not greater than the first preset value, judging whether the water return port temperature B of the freezing pipe is smaller, if so, reducing the running power of the freezing pump to be the same as that of the freezing pipe；
If B is not reduced, keeping the running power of the refrigeration pump unchanged;
where k is a preset coefficient and G is the rated power of the cryopump.
7. The building temperature control method according to claim 6, wherein the determining the minimum adjustment power according to the water return port temperature B of the freezing pipe and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power comprises:
s701, obtaining the deviation H between the current operating power of the cooling tower and the rated power of the cooling tower from the difference value of the current operating power and the rated power of the cooling tower 1 ；
S702, obtaining the deviation H between the current running power of the compressor and the rated power of the compressor from the difference value of the current running power and the rated power of the compressor 2 ；
S703, determining the minimum adjustment power I of the cooling tower according to the water return port temperature B of the freezing pipe 1 And minimum regulated power I of the compressor 2 ；
S704, compareAnd- >The size of (1)>Less than or equal to->The current operating power of the cooling tower is adjusted to be I 1 The latter value is used as the latest operating power of the cooling tower;
s705 ifIs greater than->The current running power of the compressor is adjusted to be I 2 The latter value is taken as the latest running power of the compressor;
s706, after a preset time S, judging whether the water outlet temperature C of the freezing pipe is smaller than or equal to a fourth preset value, and if not, repeating S701-S705 until the water outlet temperature C of the freezing pipe is smaller than or equal to the fourth preset value.
8. The building temperature control method according to claim 7, wherein the minimum adjustment power I of the cooling tower is determined according to the water return port temperature B of the freezing pipe 1 And minimum regulated power I of the compressor 2 Comprising:
from the following componentsObtaining the heat W required by the temperature adjustment of the freezing pipe 1 ；
From W 1 And the conversion efficiency of the cooling tower to the freezing pipe to obtain the heat W required by the temperature adjustment of the cooling tower 2 ；
According to the power and W of the cooling tower 2 To determine the power I that the cooling tower needs to adjust 3 ；
Will I 3 Dividing into n parts to obtain the minimum adjustment power I of the compressor 1 ；
According to compressor power and W 1 To determine the power I that the compressor needs to adjust 4 ；
Will I 4 Dividing into n parts to obtain the minimum adjustment power I of the compressor 2 ；
Wherein m is the mass of water in the freezing pipe, c is the specific heat capacity of water, and K is the difference of the water return port temperature B of the freezing pipe minus a second preset value.
9. A building temperature control device, the building temperature control device comprising:
a target point and a flow rate determining module for monitoring the temperature T of each set point i Every other preset period according to T i And a preset temperature A for each set point i Determining target point and chilled water flow q of coil distributing target point i ；
First-level adjustmentA segment module for performing, for each target point, a primary adjustment: according to T i And a preset temperature A for each set point i Adjusting the running power of the fan of the target point; monitoring and judging q i Whether the value of (2) changes, if so, according to q i And the temperature B of the water return port of the freezing pipe is used for adjusting the running power of the fan at the target point;
the secondary adjusting module is used for executing secondary adjustment after a preset time s passes after each time of distributing the chilled water flow of the coil pipe of the target point: adjusting the running power of the refrigeration pump according to the temperature difference a between the water return port temperature B of the refrigeration pipe and the water outlet temperature C of the refrigeration pipe and a first preset value;
the first module of tertiary regulation is used for carrying out tertiary regulation according to the change condition of the operating power of the refrigerating pump after a preset time s: if the running power of the freezing pump is increased, judging whether a is larger than a first preset value, if so, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power;
The third-stage adjusting second module is used for judging whether a is smaller than or equal to a first preset value if the running power of the freezing pump is reduced, judging whether the water return port temperature B of the freezing pipe is larger than a second preset value if the running power of the freezing pump is reduced, determining the minimum adjusting power according to the water return port temperature B of the freezing pipe if the running power of the freezing pipe is reduced, and adjusting the running power of the cooling tower or the compressor according to the minimum adjusting power; if a is not less than or equal to the first preset value, determining the minimum adjustment power according to the water return port temperature B of the freezing pipe, and adjusting the operation power of the cooling tower or the compressor according to the minimum adjustment power;
a third module for tertiary regulation, which is used for executing secondary regulation if the running power of the freezing pump is not changed;
where i is the sequence number of the setpoint.
10. A building temperature control system, characterized in that the building temperature control system comprises an execution module and a control module;
the execution module comprises a fan, a coil pipe, a freezing pump, a cooling pipe, a cooling pump, a cooling tower and a compressor;
each set point is provided with a fan and corresponding coils, water inlets of all coils are connected with water outlets of the freezing pipes, and water outlets of all coils are connected with water return ports of the freezing pipes;
The freezing pipe is connected with the coil pipe and the freezing pump in series to form a freezing loop;
the cooling pipe is connected with the cooling pump and the cooling tower in series to form a cooling loop;
the compressor is used for heat exchange of the refrigerating circuit and the cooling circuit;
the control module is configured to perform the building temperature control method according to any one of claims 1-8 to control the execution module.
CN202311352071.3A 2023-10-19 2023-10-19 Building temperature control method, device and system Active CN117073128B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311352071.3A CN117073128B (en) 2023-10-19 2023-10-19 Building temperature control method, device and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311352071.3A CN117073128B (en) 2023-10-19 2023-10-19 Building temperature control method, device and system

Publications (2)

Publication Number Publication Date
CN117073128A CN117073128A (en) 2023-11-17
CN117073128B true CN117073128B (en) 2024-01-26

Family

ID=88713926

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311352071.3A Active CN117073128B (en) 2023-10-19 2023-10-19 Building temperature control method, device and system

Country Status (1)

Country Link
CN (1) CN117073128B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202853049U (en) * 2012-10-24 2013-04-03 姚琛 Air-conditioning system and enthalpy difference control system of tail end air-conditioner thereof
CN107178868A (en) * 2017-04-20 2017-09-19 深圳达实智能股份有限公司 A kind of hospital clinic fan coil wind speed and cold inter-linked controlling method and device
WO2019179177A1 (en) * 2018-03-20 2019-09-26 珠海格力电器股份有限公司 Air conditioner control method and device and air conditioner
CN110726200A (en) * 2019-10-17 2020-01-24 珠海格力电器股份有限公司 Control system of air conditioner and air conditioning system
CN114754432A (en) * 2022-04-26 2022-07-15 西安科技大学 Chilled water supply regulation and control method and system based on cooling capacity change

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202853049U (en) * 2012-10-24 2013-04-03 姚琛 Air-conditioning system and enthalpy difference control system of tail end air-conditioner thereof
CN107178868A (en) * 2017-04-20 2017-09-19 深圳达实智能股份有限公司 A kind of hospital clinic fan coil wind speed and cold inter-linked controlling method and device
WO2019179177A1 (en) * 2018-03-20 2019-09-26 珠海格力电器股份有限公司 Air conditioner control method and device and air conditioner
CN110726200A (en) * 2019-10-17 2020-01-24 珠海格力电器股份有限公司 Control system of air conditioner and air conditioning system
CN114754432A (en) * 2022-04-26 2022-07-15 西安科技大学 Chilled water supply regulation and control method and system based on cooling capacity change

Also Published As

Publication number Publication date
CN117073128A (en) 2023-11-17

Similar Documents

Publication Publication Date Title
US11359847B2 (en) Systems and methods for controlling a refrigeration system
CN108700347B (en) System and method for controlling a refrigeration system
US9562701B2 (en) Temperature control system and air conditioning system
CN106123215B (en) A kind of air conditioning cooling water system control method and device
US8291720B2 (en) Sequencing of variable speed compressors in a chilled liquid cooling system for improved energy efficiency
CN111928419B (en) Control method and system for multi-split air conditioning unit
JP5984456B2 (en) Heat source system control device, heat source system control method, heat source system, power adjustment network system, and heat source machine control device
CN111795481B (en) Air conditioning system and control method therefor
CN111520869B (en) Accurate refrigerant distribution control method for indoor unit of multi-split system
WO2021063088A1 (en) Cooling system and method for inverter, and air conditioning apparatus
JP2015055444A (en) Air conditioner
JP2023033397A (en) Control device, control method and control program for air conditioning system and air conditioning system
JP5927670B2 (en) Air conditioner
CN117073128B (en) Building temperature control method, device and system
CN111981642B (en) Energy regulation control method for heat pump air conditioning system module unit
CN111121152B (en) Multi-connected outdoor unit and fresh air fan mixed connection system and control method thereof
EP4033170B1 (en) Method for controlling balanced frosting of outdoor units in multi-split air-conditioning system
JP2013167368A (en) Air conditioner
JP2014134321A (en) Compound air conditioning system
WO2023181117A1 (en) Cooling device, and cooling method for cooling device
WO2016024504A1 (en) Load distribution system
JP6252636B2 (en) Load distribution system
CN117847752A (en) Constant-temperature air conditioner electric heating control method, system, storage medium and equipment
JP2016115188A (en) Information processing system
JP6438717B2 (en) Cooling system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant