JP5951142B1 - Air conditioning system controller - Google Patents

Abstract

By learning the building heat input / discharge characteristics and heat medium utilization device characteristics from the operation data, even when the heat medium utilization device to be connected is unknown, room temperature response and stability are improved. The control command determination unit 52 is configured to determine a water discharge temperature command reference value based on the building characteristic 58 and the radiator characteristic 59 learned by the characteristic learning unit 53, the outside air temperature, and the set temperature, A discharge water temperature command correction value determination unit 57 that determines a discharge water temperature command correction value based on the correction coefficient, the set temperature, and the room temperature, and calculates the sum of the discharge water temperature command reference value and the discharge water temperature command correction value. The control command to the water-use air conditioning system 1 is determined.

Description

  The present invention relates to an air-conditioning system control device that is used in an air-conditioning system such as a water-utilizing air-conditioning system and that improves room temperature responsiveness and stability.

The water-use air conditioning system generates hot water by a heat source device during heating, and uses the generated hot water for hot water supply such as a shower and bath, and heating such as a radiator and floor heating. Moreover, at the time of cooling, cold water is produced | generated with a heat source machine, and the produced | generated cold water is utilized for a radiator or a floor cooling. As the heat source device, a heat pump device with high energy efficiency or a boiler with low energy efficiency but low cost is used.
In the water-use air conditioning system, for example, at the time of cooling and heating, the command value of the water discharge temperature is controlled based on the deviation between the set temperature and the measured indoor temperature.

  Patent Document 1 describes that the air conditioning heat source device group is controlled based on the relationship between the outside air temperature and the thermal load of the building. In the building air-conditioning heat source system described in Patent Document 1, responsiveness is improved by feedforward control of the air-conditioning heat source device group based on the relationship between the outside air temperature and the thermal load of the building, and wasteful air-conditioning energy is consumed. We are trying to realize energy saving.

  Patent Document 2 describes that the target value of the physical quantity of the refrigerant of the air conditioner is variably controlled in accordance with the air conditioning load characteristics of the building. In the air conditioner described in Patent Document 2, the target value of the physical quantity of the refrigerant is controlled based on the air conditioning load of the building, thereby stabilizing the capacity of the compressor and reducing the temperature fluctuation of the air conditioned space. Yes.

JP 2013-92327 A Japanese Patent No. 4032634

  Since the conventional building air conditioning heat source system as disclosed in Patent Document 1 performs feedforward control based on the relationship between the outside air temperature and the thermal load of the building, responsiveness is improved and useless air conditioning energy is consumed. It can prevent and realize energy saving. However, when the design heat load does not match the actual heat load, when the connected heatsink is unknown, or when the characteristics are significantly different, such as a radiator and floor heating / cooling, appropriate control and response It was difficult to improve the sex.

  On the other hand, the conventional air conditioner disclosed in Patent Document 2 controls the target value of the physical quantity of the refrigerant based on the learned air conditioning load characteristics of the building, so that the design heat load matches the actual heat load. Even if it is not, the temperature fluctuation of the air-conditioned space can be reduced. However, when the radiator to be connected is unknown, it is difficult to determine an appropriate target value for the physical quantity of the refrigerant when the characteristics are greatly different, such as a radiator and floor heating / cooling.

  The present invention is for solving the above-described problem, and by learning the building heat input / heat dissipation characteristic and the heat medium utilization device characteristic from the operation data, respectively, the connected heat medium utilization device is unknown. However, an object of the present invention is to provide an air conditioning system control device capable of improving the responsiveness and stability at room temperature.

上記の数式において、Ｔ _ｗ，ｓ は、出水温度指令基準値［Ｋ］、αは、建物の入放熱特性［ｋＷ／Ｋ］、βは、熱媒体利用装置特性としての放熱器の放熱特性［ｋＷ／Ｋ］、Ｔ _ｓｅｔ は、設定温度［Ｋ］、Ｔ _ｏ は、外気温［Ｋ］であり、補正係数と前記設定温度と前記室内温度とに基づいて前記出水温度の出水温度指令補正値を決定する出水温度指令補正値決定部と、を有し、前記出水温度指令基準値と前記出水温度指令補正値との和をとって前記空調システムへの前記制御指令を決定するものである。 An air conditioning system control device according to the present invention is used in a water-use air conditioning system including a heat pump device and a transport device that circulates water heated or cooled by the heat pump device between the heat pump device and the heat medium utilization device. An air-conditioning system control device for obtaining air-conditioning system data that obtains at least the temperature of water discharged from the heat pump device, the indoor temperature of the air-conditioning target room, and the outside air temperature as operation data of the air-conditioning system When a characteristic learning unit for learning the incoming heat radiation characteristics and the heat medium utilization device characteristics of the building from the operating data of the air conditioning system, the indoor temperature as the control command to the heat pump device such that the set temperature of the air-conditioning target chamber and a control command determining unit that determines the water outlet temperature command, the control command determining unit, the characteristic learning unit A water outlet temperature command reference value determining unit from the determined and input radiation characteristic and the heat medium utilization device characteristics and the outside air temperature of the building as the set temperature based on the following equation to determine the water outlet temperature command reference value of the water outlet temperature ,

In the above formula, T _{w, s} is the water temperature command reference value [K], α is the heat input / heat dissipation characteristic [kW / K] of the building, and β is the heat dissipation characteristic of the radiator as the heat medium utilization device characteristic [ kW / _{K], T set} is the set temperature [K], _{T o} is the ambient temperature [K], the water temperature command correction value of the water outlet temperature based correction coefficient and the set temperature and the indoor temperature And determining the control command to the air conditioning system by taking the sum of the reference value of the outlet water temperature command and the correction value of the outlet water temperature command.

  According to the air-conditioning system control apparatus of the present invention, the building heat input / discharge characteristics and the heat medium utilization apparatus characteristics are learned from the operation data, and the temperature command is determined based on the two learned characteristics. Therefore, even when the heat medium utilization device to be connected is unknown, room temperature response and stability can be improved.

It is a figure which shows an example of schematic structure of the water utilization air conditioning system which concerns on Embodiment 1 of this invention. It is a figure which shows another example of schematic structure of the water utilization air conditioning system which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a function structure of the water utilization air-conditioning system control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the example of the building characteristic which concerns on Embodiment 1 of this invention. It is a figure which shows the example of the heat radiator characteristic which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the water temperature command reference value which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the change allowable range of the water temperature command which concerns on Embodiment 1 of this invention. It is a figure explaining the change range of the water temperature command reference value which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the control block diagram of the control command determination part which concerns on Embodiment 1 of this invention. It is a figure which shows another example of the control block diagram of the control command determination part which concerns on Embodiment 1 of this invention. It is a flowchart explaining an example of water utilization air-conditioning system control command determination processing among the control examples of the water utilization air-conditioning system control apparatus which concerns on Embodiment 1 of this invention. It is a flowchart explaining an example of a characteristic learning process among the control examples of the water utilization air-conditioning system control apparatus which concerns on Embodiment 1 of this invention. It is a flowchart explaining a series of operation examples which perform control of the water utilization air conditioning system 1 among the control examples of the water utilization air conditioning system control apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows an example of a function structure of the water utilization air-conditioning system control apparatus which concerns on Embodiment 2 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The step of describing the program for performing the operation of the embodiment of the present invention is a process performed in time series in the described order, but is executed in parallel or individually even if not necessarily processed in time series Processing may be included.
It does not matter whether each function described in the embodiment of the present invention is realized by hardware or software. That is, each block diagram described in this embodiment may be considered as a hardware block diagram or a software functional block diagram. For example, each block diagram may be realized by hardware such as a circuit device, or may be realized by software executed on an arithmetic device such as a processor (not shown).
In addition, each block in the block diagram described in this embodiment only needs to perform its function, and the configuration may not be separated by each block. In each of the first and second embodiments, items not particularly described are the same as those in the first and second embodiments, and the same functions and configurations are described using the same reference numerals. Moreover, each of Embodiments 1-2 may be implemented independently and may be implemented in combination. In either case, the advantageous effects described below can be obtained. Further, various specific setting examples described in the embodiments are merely examples, and are not particularly limited thereto.
Moreover, although heating is mentioned as an example below, it can implement similarly about cooling. In that case, in the following, floor heating is floor cooling.

Embodiment 1 FIG.
(First configuration example of the water-use air conditioning system 1)
FIG. 1 is a diagram illustrating an example of a schematic configuration of a water-use air conditioning system 1 (heat medium use air-conditioning system) according to Embodiment 1 of the present invention.
As shown in FIG. 1, a water-use air conditioning system 1 includes a heat pump device 2 (heat source unit), a radiator 4, a floor heating 5, and a pump 3, which are connected by piping to form a heat medium circuit (conveyance device). doing. Then, water as a heat medium circulates in the circuit in the direction of the solid line arrow in FIG. The water-use air conditioning system 1 includes a water-use air-conditioning system control device 6 as an air-conditioning system control device that controls the heat pump device 2, the pump 3, and the like. The water-use air conditioning system control device 6 acquires various detection values from the water discharge temperature sensor 7, the indoor temperature sensor 8, the water return temperature sensor 9, the water flow rate sensor 10, and the outside air temperature sensor 11.
The radiator 4 and the floor heating 5, which are devices (heat medium utilization devices) that use hot water generated by the heat pump device 2 and the boiler, are connected in parallel to the heat pump device 2.
The water-use air conditioning system 1 may be constructed by introducing all devices newly. However, the water-use air-conditioning system 1 is constructed by, for example, newly introducing a heat pump device 2 and a water-use air-conditioning system control device 6 to an existing water-use air-conditioning system 1 in which a boiler is installed as a heat source. It may be possible to

(Second configuration example of the water-use air conditioning system 1)
FIG. 2 is a diagram showing another example of a schematic configuration of the water-use air conditioning system 1 (heat medium-use air conditioning system) according to Embodiment 1 of the present invention.
As shown in FIG. 2, the water-use air conditioning system 1 includes a heat pump device 2 (heat source unit), a three-way valve 12, a tank 13, a radiator 4, a floor heating 5, and a pump 3, which are connected by piping and are a heat medium circuit. (Conveying device). Then, water as a heat medium circulates in the circuit in the direction of the solid line arrow in FIG. During the hot water supply operation, water flows from the three-way valve 12 to the tank 13. On the other hand, during the heating operation, water flows from the three-way valve 12 to the radiator 4 and the floor heating 5. The water-use air conditioning system 1 includes a water-use air conditioning system control device 6 that controls the heat pump device 2, the three-way valve 12, the pump 3, and the like. The water-use air conditioning system control device 6 acquires various detection values from the water discharge temperature sensor 7, the indoor temperature sensor 8, the return water temperature sensor 9, the water flow rate sensor 10, the outside air temperature sensor 11, and the tank temperature sensor 14.
The radiator 4, the floor heating 5, and the tank 13, which are devices (heat medium utilization devices) that use hot water generated by the heat pump device 2 and the boiler, are connected in parallel to the heat pump device 2.
The water-use air conditioning system 1 may be constructed by introducing all devices newly. However, the water-use air-conditioning system 1 is constructed by, for example, newly introducing a heat pump device 2 and a water-use air-conditioning system control device 6 to an existing water-use air-conditioning system 1 in which a boiler is installed as a heat source. It may be possible to

(Function block diagram: Overview)
Next, functions implemented in the water-use air conditioning system 1 described above will be described with reference to FIG. FIG. 3 is a diagram illustrating an example of a functional configuration of the water-use air conditioning system control device 6 according to Embodiment 1 of the present invention.
As shown in FIG. 3, the water-use air conditioning system control device 6 transmits and receives various data and the like with the water-use air conditioning system 1. For example, the water-use air conditioning system control device 6 receives input information of the water-use air conditioning system 1 from the water-use air conditioning system 1. Further, for example, the water-use air conditioning system control device 6 transmits a control command to the water-use air conditioning system 1.
The water-use air conditioning system control device 6 acquires the building characteristics 58 and the radiator characteristics 59 (heat medium utilization apparatus characteristics). The acquisition method will be described later. The building characteristics 58 are various physical property values related to the target building where the water-use air conditioning system 1 is installed. The radiator characteristic 59 is various physical property values related to a heat medium utilization device such as the radiator 4 and the floor heating 5.
That is, the water-use air conditioning system control device 6 uses the water-use air-conditioning installed in the target building based on the input information from the water-use air-conditioning system 1 based on various detection values, the building characteristics 58, and the radiator characteristics 59. System 1 is controlled.
As shown in FIG. 3, the water-use air conditioning system control device 6 includes a data storage unit 54, a control command determination unit 52, a characteristic learning unit 53, a water-use air conditioning system data acquisition unit 51, and a control command unit 55 as functional configurations. It has. The control command determination unit 52 includes a water discharge temperature command reference value determination unit 56 and a water discharge temperature command correction value determination unit 57.

(Function block diagram: details)
Next, details of various functions of the water-use air conditioning system control device 6 will be described with reference to FIGS. FIG. 4 is a diagram showing an example of the building characteristic 58 according to Embodiment 1 of the present invention. FIG. 5 is a diagram illustrating an example of the radiator characteristic 59 according to the first embodiment of the present invention.

(Data storage unit 54)
The data storage unit 54 stores various data acquired via the water-use air conditioning system data acquisition unit 51. The data storage unit 54 stores a building characteristic 58, a radiator characteristic 59, and the like. The data storage unit 54 supplies the control command determination unit 52 with input data for control command determination having various stored data as components. The data storage unit 54 stores various calculation results of the control command determination unit 52, for example, control commands for the water-use air conditioning system 1. The data storage unit 54 supplies the stored control command to the control command unit 55. The data storage unit 54 supplies the characteristic learning unit 53 with characteristic learning input data having various stored data as components. The data storage unit 54 stores various calculation results of the characteristic learning unit 53, for example, the building characteristic 58 and the radiator characteristic 59. The data storage unit 54 supplies the stored building characteristics 58 and radiator characteristics 59 to the control command determination unit 52.

(Building characteristics 58)
Details of the building characteristics 58 stored in the data storage unit 54 will be described. As shown in FIG. 4, the building characteristic 58 is a value representing the heat insulating property and the air tightness of the building in which the water-use air conditioning system 1 is installed, and is represented by, for example, Expression (1) described below. The heat input / heat dissipation characteristics included in the formula are applicable. The expression represented by Expression (1) represents the heat input / output of the building, and uses the outside air temperature and the set temperature of the room to be heated as input data to obtain the amount of heat input / exit of the building. is there. In other words, the expression represented by Expression (1) is a mathematical model, and is a building heat input / discharge amount prediction model that predicts the heat input / discharge amount of the building.

式（１）において、Ｑ_ｈは、建物の入放熱量［ｋＷ］、αは、建物の入放熱特性［ｋＷ／Ｋ］、Ｔ_ｏは外気温［Ｋ］、Ｔ_ｚは設定温度［Ｋ］である。

In the formula (1), _{Q h} is input heat radiation amount of the building [kW], alpha is input heat dissipation characteristics of the building [kW / K], _{T o} is the outside air temperature [K], _{T z} is the set temperature [K] It is.

  The building characteristic 58 may be, for example, a value calculated from building structure data, that is, building data such as wall material, wall thickness, wall area, and room size. The building characteristics 58 may be registered (manually set) in advance in the data storage unit 54 by a user operation. Moreover, the building characteristics 58 may be updated as needed from the outside of the water-use air conditioning system control device 6.

(Heatsink characteristics 59)
Details of the radiator characteristic 59 stored in the data storage unit 54 will be described. As shown in FIG. 5, the radiator characteristic 59 is a value representing the heat dissipation of a radiator such as the radiator 4 or the floor heating 5 used in the water-use air conditioning system 1, and is, for example, an expression (2) described below. The heat dissipation characteristics included in the formula represented by The expression represented by Expression (2) expresses the heat dissipation characteristics of the radiator, and obtains the heat dissipation amount of the radiator using the water discharge temperature as input data. In other words, the expression represented by Expression (2) is a mathematical model, and is a radiator heat radiation amount prediction model that predicts the heat radiation amount of the radiator.

式（２）において、Ｑ_ｅは、放熱器の放熱量［ｋＷ］、βは、放熱器の放熱特性［ｋＷ／Ｋ］、Ｔ_ｗは出水温度［Ｋ］である。

In the formula (2), _{Q e} is the heat radiation amount of the radiator [kW], beta is the heat dissipation characteristics of the radiator [kW / K], _{T w} is the water outlet temperature [K].

The radiator characteristic 59 may be, for example, a value calculated from radiator data such as the specification data of the radiator, that is, the material of the radiator, the thickness of the radiator, and the heat transfer area of the radiator. Good.
The radiator characteristic 59 may be registered (manually set) in advance in the data storage unit 54 by a user operation. Further, the radiator characteristic 59 may be updated as needed from the outside of the water-use air conditioning system control device 6.

(Characteristic learning unit 53)
The characteristic learning unit 53 learns the characteristic used by the control command determination unit 52. Specifically, the characteristic learning unit 53 uses various input data acquired from the data storage unit 54 for the building characteristic 58 and the radiator characteristic 59 used in the water temperature command reference value determination unit 56 of the control command determination unit 52, or Learning from various measurement data of the water-use air conditioning system 1.
When the building characteristic 58 is learned from various measurement data, the building characteristic 58 may be obtained by applying the various measurement data to the conversion of the expression represented by the expression (1) described above.
Specifically, the building heat input / discharge characteristics are obtained based on the outside air temperature, the room temperature, and the heat quantity data supplied to the building in the equation represented by Equation (3). The calorific value data supplied to the building may be a value calculated from the density of water, the specific heat of water, the flow rate of water, the temperature of outlet water, and the temperature of returning water. Further, the building heat input / dissipation characteristics may be learned on the basis of the outside air temperature in a predetermined period, the room temperature, and the total value of the heat amount data supplied to the building. For example, the predetermined period is 24 hours. The obtained heat input / output characteristic of the building is defined as a building characteristic 58.

式（３）において、αは、建物の入放熱特性［ｋＷ／Ｋ］、ρは、水の密度［ｋｇ／Ｌ］、Ｃ_ｐは、水の比熱［ｋＪ／（ｋｇ・Ｋ）］、Ｖ_ｗは、水の流量［Ｌ／ｓ］、Ｔ_ｗは、出水温度［Ｋ］、Ｔ_ｗ，ｒは、返水温度［Ｋ］、Ｔ_ｏは、外気温［Ｋ］、Ｔ_ｚは、室内温度［Ｋ］である。

In equation (3), α is the heat input / output characteristics [kW / K] of the building, ρ is the density of water [kg / L], C _p is the specific heat of water [kJ / (kg · K)], V _w, the water flow rate [L / s], _{T w} is, the water temperature _{[K], T w, r} is, return water temperature [K], _{T o} is, the outside air temperature [K], _{T z} is, indoor Temperature [K].

Even when the radiator characteristic 59 is learned from various measurement data, even if the radiator characteristic 59 is obtained by applying the various measurement data to a result obtained by converting the expression represented by the expression (2) described above. Good.
Specifically, the heat dissipation characteristic of the radiator is obtained based on the water temperature and the heat quantity data supplied by the radiator in the equation represented by Equation (4). The calorific value data supplied by the radiator may be a value calculated from the density of water, the specific heat of water, the flow rate of water, the temperature of discharged water, and the temperature of returning water. Moreover, you may learn the thermal radiation characteristic of a heat radiator based on the total value of the water temperature in a predetermined period, and the calorie | heat amount data which the heat radiator supplied. For example, the predetermined period is 24 hours. The obtained heat dissipation characteristic of the radiator is defined as a radiator characteristic 59.

式（４）において、βは、放熱器の放熱特性［ｋＷ／Ｋ］、ρは、水の密度［ｋｇ／Ｌ］、Ｃ_ｐは、水の比熱［ｋＪ／（ｋｇ・Ｋ）］、Ｖ_ｗは、水の流量［Ｌ／ｓ］、Ｔ_ｗは、出水温度［Ｋ］、Ｔ_ｗ，ｒは、返水温度［Ｋ］である。

In equation (4), β is the heat dissipation characteristic [kW / K] of the radiator, ρ is the density of water [kg / L], C _p is the specific heat of water [kJ / (kg · K)], V _w is the flow rate [L / s] of water, T _w is the water discharge temperature [K], and T _{w, r} is the water return temperature [K].

(Control command determination unit 52)
The control command determination unit 52 determines a control command for the water-use air conditioning system 1. Specifically, the control command determination unit 52 determines the outlet temperature command of the water-use air conditioning system 1 so that the indoor temperature to be controlled satisfies the preset indoor temperature. Therefore, the control command determination unit 52 includes a water discharge temperature command reference value determination unit 56 and a water discharge temperature command correction value determination unit 57 in order to execute the functions described above.
The function of the control command determination unit 52 will be described with reference to FIGS. FIG. 6 is a diagram showing an example of the water discharge temperature command reference value according to Embodiment 1 of the present invention. FIG. 7 is a diagram showing an example of a change allowable range of the water discharge temperature command according to Embodiment 1 of the present invention. FIG. 8 is a diagram for explaining a change range of the water discharge temperature command reference value according to Embodiment 1 of the present invention. FIG. 9 is a diagram showing an example of a control block diagram of the control command determination unit 52 according to Embodiment 1 of the present invention. FIG. 10 is a diagram illustrating another example of a control block diagram of the control command determination unit 52 according to Embodiment 1 of the present invention.

(Water temperature command reference value determination unit 56)
The water temperature command reference value determination unit 56 is configured to obtain the set temperature of the air-conditioning target space of the water-use air conditioning system 1 acquired via the water-use air-conditioning system data acquisition unit 51, the outside air temperature, the building characteristics 58, and the radiator characteristics 59. Based on the water temperature command reference value characteristic obtained from The water temperature command reference value characteristic is shown in FIG. 6 and corresponds to the water temperature command reference value characteristic included in the equation (5) described below. The expression represented by the expression (5) represents the water temperature required for the building, and uses the outside air temperature and the set temperature of the room to be heated as input data to obtain the water temperature reference value. It is. That is, the expression represented by Expression (5) is a mathematical model, and is a water discharge temperature command reference value prediction model for predicting the water discharge temperature required for a building.

式（５）において、Ｔ_ｗ，ｓは、出水温度指令基準値［Ｋ］、αは、建物の入放熱特性［ｋＷ／Ｋ］、βは、放熱器の放熱特性［ｋＷ／Ｋ］、Ｔ_ｓｅｔは、設定温度［Ｋ］、Ｔ_ｏは、外気温［Ｋ］である。

In Equation (5), T _{w, s} is the water discharge temperature command reference value [K], α is the heat input / heat dissipation characteristic [kW / K] of the building, β is the heat dissipation characteristic [kW / K] of the radiator, T _set, the set temperature [K], _{T o} is the outside air temperature [K].

  In Expression (5), the set temperature and the outside air temperature of the air-conditioning target space are input to obtain the water discharge temperature command reference value. In addition, as shown in FIG. 8, it is good also as a water discharge temperature command reference value entering into the range of the water discharge temperature upper limit setting value and water discharge temperature lower limit setting value which were preset. For example, when the water discharge temperature upper limit setting value is 50 ° C., the water discharge temperature lower limit setting value is 35 ° C., and the water discharge temperature command reference value obtained by calculation is 60 ° C., the water discharge temperature command reference value is 50 ° C. It becomes.

(Water temperature command correction value determination unit 57)
Based on the measured indoor temperature of the air-conditioning target space of the water-use air conditioning system 1 acquired via the water-use air-conditioning system data acquisition unit 51, the set temperature, and the correction coefficient, Obtain the water temperature command correction value. The outlet water temperature command correction value is obtained from Equation (6). The expression represented by the expression (6) is calculated by using the measured indoor temperature in the current and previous control cycles, the set temperature in the current and previous control cycles, and the correction coefficient as input data. Is what you want. That is, the expression represented by Expression (6) is a mathematical model that is a model that performs feedback control on the room temperature.

式（６）において、ｔは、今回の制御周期、ｔ−１は、前回の制御周期、Ｔ_ｗ，ａは、出水温度指令補正値［Ｋ］、Ｔ_ｓｅｔ（ｔ）は、制御周期ｔの設定温度［Ｋ］、Ｔ_ｚ（ｔ）は、制御周期ｔの計測された室内温度［Ｋ］、Ｋ_ｐは、補正係数１、Ｋ_ｌは、補正係数２である。

In Equation (6), t is the current control cycle, t-1 is the previous control cycle, _{Tw, a} is the water temperature command correction value [K], and T _set (t) is the control cycle t. The set temperature [K], T _z (t) is the measured room temperature [K] of the control period t, K _p is the correction coefficient 1, and K _l is the correction coefficient 2.

In equation (6), the measured indoor temperature in the current and previous control cycles and the set temperature in the current and previous control cycles are input to obtain the outlet water temperature command correction value.
The correction coefficient may be a value calculated from data such as a room temperature response time constant of a building, a target response time constant, and a control cycle. The correction coefficient may be registered (manually set) in advance in the data storage unit 54 by a user operation. Further, the correction coefficient may be updated as needed from the outside of the water-use air conditioning system control device 6. When determining the correction coefficient from various measurement data, it is possible to have a plurality of correction coefficients in advance, operate based on each correction coefficient, and determine based on the total value of the deviation between the room temperature and the set temperature for a predetermined period Good. For example, the predetermined period is 24 hours.

  As shown in FIG. 9, the control command determination unit 52 takes the sum of the water temperature command reference value and the water temperature command correction value and sets it as the water temperature command. Alternatively, as shown in FIG. 10, the sum of the water discharge temperature command reference value and the water discharge temperature command correction value is used as the water discharge temperature command only at the time of initial startup or when the set temperature is changed, otherwise the water discharge temperature command of the previous control cycle is used. And the sum of the water temperature command correction value may be used as the water temperature command. In addition, as shown in FIG. 8, it is good also as a water discharge temperature command entering into the range of the water discharge temperature upper limit set value and the water discharge temperature lower limit set value which were preset. For example, when the water discharge temperature upper limit setting value is 50 ° C., the water discharge temperature lower limit setting value is 35 ° C., and the water discharge temperature command obtained by calculation is 60 ° C., the water discharge temperature command reference value is 50 ° C.

(Water-use air conditioning system data acquisition unit 51)
Although the water utilization air conditioning system data acquisition part 51 acquires the various data of the water utilization air conditioning system 1 via a communication medium, a communication medium is not specifically limited. The communication medium may be wired or wireless, for example. Specifically, the water-use air conditioning system data acquisition unit 51 measures the operation data of the water-use air conditioning system 1 required by the control command determination unit 52. The operation data of the water-use air conditioning system 1 is input information supplied from the water-use air conditioning system 1 and includes at least the room temperature of the room where the water-use air conditioning system 1 is installed. The operation data of the water-use air conditioning system 1 may include the set temperature of the room where the water-use air conditioning system 1 is installed.

  Note that the water-use air conditioning system data acquisition unit 51 may measure data used in other than the control command determination unit 52, for example, data necessary when the building characteristics 58 and the radiator characteristics 59 are independently calculated. . The data that can uniquely calculate the building characteristics 58 and the radiator characteristics 59 are, for example, the water return temperature at the entrance of the heat pump apparatus 2 installed in the water-use air conditioning system 1, and the heat pump apparatus 2 installed in the water-use air conditioning system 1. The flow rate of water at the inlet of the water, the outlet water temperature of the outlet of the heat pump device 2 installed in the water-use air conditioning system 1, the room temperature, the outside air temperature, and the like may be used. Moreover, the water utilization air conditioning system data acquisition part 51 measures data from various sensors installed independently from the water utilization air conditioning system 1, such as a temperature sensor that measures the room temperature, if necessary. Also good.

(Control command part 55)
The control command unit 55 transmits a control command for the water-use air conditioning system 1 to the water-use air conditioning system 1. The control command unit 55 is supplied with a control command transmission cycle that is a timing for periodically transmitting the control command. Therefore, the control command unit 55 supplies the control command to the water-use air conditioning system 1 for each control command transmission cycle. Specifically, the control command unit 55 obtains a control command stored in the data storage unit 54, converts the control command into a format suitable for the water-use air conditioning system 1, and then transmits the control command at a control command transmission cycle. To the water-use air conditioning system 1.

  Next, on the premise of the functional configuration described above, an operation example of the water-use air conditioning system control device 6 will be described.

FIG. 11 is a flowchart for explaining an example of the water-use air conditioning system control command determination process in the control example of the water-use air conditioning system control device 6 according to Embodiment 1 of the present invention.
(Water-based air conditioning system control command decision processing)
(Step S11)
The water-use air conditioning system control device 6 determines the outlet water temperature command reference value based on the set temperature, the outside air temperature, and the outlet water temperature command reference value characteristic. For example, the water discharge temperature command reference value is determined by the above equation (5).

(Step S12)
The water-use air conditioning system control device 6 corrects the water discharge temperature command reference value when the water discharge temperature command reference value is not within the range of the water discharge temperature upper limit setting value and the water discharge temperature lower limit setting value. That is, when the water discharge temperature command reference value exceeds the water discharge temperature upper limit setting value, the water discharge temperature command reference value is corrected to the same value as the water discharge temperature upper limit setting value. When the water discharge temperature command reference value falls below the water discharge temperature lower limit setting value, the water discharge temperature command reference value is corrected to the same value as the water discharge temperature lower limit setting value. In other cases, the water discharge temperature command reference value is not corrected.

(Step S13)
The water-use air conditioning system control device 6 determines the outlet temperature command correction value based on the set temperature, the measured indoor temperature, and the correction coefficient. For example, the outlet temperature command correction value is determined by the above equation (6).

(Step S14)
The water-use air conditioning system controller 6 determines the water temperature command based on the water temperature command reference value and the water temperature command correction value. As shown in FIG. 9, the water-use air conditioning system control device 6 takes the sum of the water temperature command reference value and the water temperature command correction value and sets it as the water temperature command. Alternatively, as shown in FIG. 10, the sum of the water discharge temperature command reference value and the water discharge temperature command correction value is used as the water discharge temperature command only at the time of initial startup or when the set temperature is changed, and in other cases, the water discharge temperature of the previous control cycle. The sum of the command and the water temperature command correction value may be used as the water temperature command.

(Step S15)
When the water temperature command is not within the range between the water temperature upper limit setting value and the water temperature lower limit setting value, the water-use air conditioning system control device 6 corrects the water temperature command and ends the process. That is, when the water discharge temperature command exceeds the water discharge temperature upper limit setting value, the water discharge temperature command is corrected to the same value as the water discharge temperature upper limit setting value, and the process is terminated. When the water temperature command is lower than the water temperature lower limit setting value, the water temperature command is corrected to the same value as the water temperature lower limit setting value, and the process ends. In other cases, the water temperature command is not corrected and the process is terminated.

FIG. 12 is a flowchart illustrating an example of the characteristic learning process in the control example of the water-use air conditioning system control device 6 according to Embodiment 1 of the present invention.
(Characteristic learning process)
(Step S21)
The water-use air conditioning system control device 6 determines whether or not the water-use air conditioning system 1 is in a stable state. If the water-use air conditioning system control device 6 determines that it is in a stable state, it proceeds to step S22. On the other hand, when it determines with the water utilization air-conditioning system control apparatus 6 not being in a stable state, a characteristic learning process is complete | finished. In addition, when determining whether it is a stable state, you may determine based on whether the deviation of room temperature and preset temperature is in the predetermined range in the predetermined period. For example, the predetermined period is 30 minutes or the like, and the predetermined range is 0.5 ° C. or less. In this case, if the set temperature is 20 ° C. and the room temperature is 20.5 ° C. for 30 minutes, it is determined as a stable state.

(Step S22)
The water-use air-conditioning system control device 6 includes the building heat input and heat release characteristics of the previous control cycle, the heat radiation amount to the building obtained from the operation data of the water-use air-conditioning system 1, the measured indoor temperature, and the outside air temperature. Based on the above, the heat input / output characteristics of the building are calculated. For example, the building heat input / dissipation characteristic (building characteristic 58) is calculated by the above equation (3).

(Step S23)
The water-use air conditioning system control device 6 is based on the heat dissipation characteristics of the radiator of the previous control cycle, the heat radiation amount to the building determined from the operation data of the water-use air conditioning system 1, and the measured water temperature. Calculate the heat dissipation characteristics of the radiator. For example, the heat dissipation characteristic (heatsink characteristic 59) of the heatsink is calculated by the above equation (4).

(Step S24)
The water-use air-conditioning system control device 6 calculates the outlet temperature command reference value characteristic based on the incoming / outgoing heat release characteristic of the building and the heat release characteristic of the radiator, and ends the process. For example, it is calculated as the water discharge temperature command reference value characteristic shown in FIG. 6 used in the above equation (5).

  Next, the operation of the water-use air-conditioning system control device 6 to control the water-use air-conditioning system 1 will be described on the premise of the operation examples of the water-use air-conditioning system control command determination process and the characteristic learning process described above. FIG. 13: is a flowchart explaining a series of operation examples which perform control of the water utilization air conditioning system 1 among the control examples of the water utilization air conditioning system control apparatus 6 which concerns on Embodiment 1 of this invention.

  Note that the processing in step S54 is processing for causing the characteristic learning processing described with reference to FIG. Therefore, the characteristic learning process corresponding to the process of step S31 of FIG. 13 corresponds to the processes of step S21 to step S24 of FIG. Moreover, the process of step S56 is a process which performs operation | movement to the water utilization air-conditioning system control command determination process demonstrated using FIG. Therefore, the control command determination process corresponding to the process of step S41 of FIG. 13 corresponds to the processes of step S11 to step S15 of FIG.

(Characteristic learning process)
(Step S31)
The water-use air conditioning system control device 6 executes a characteristic learning process.

(Water-based air conditioning system control command decision processing)
(Step S41)
The water-use air conditioning system control device 6 executes a water-use air conditioning system control command determination process.

(Water-use air conditioning system control processing)
(Step S51)
The water-use air conditioning system control device 6 determines whether or not the control cycle has arrived. When the control cycle has arrived, the water-use air conditioning system control device 6 proceeds to step S52. On the other hand, when the control cycle has not arrived, the water-use air conditioning system control device 6 returns to step S51.

(Step S52)
The water-use air conditioning system control device 6 acquires operation data of the water-use air conditioning system.

(Step S53)
The water-use air conditioning system control device 6 stores operation data of the water-use air conditioning system.

(Step S54)
The water-use air conditioning system control device 6 learns the building characteristics 58, the radiator characteristics 59, and the water discharge temperature command reference value characteristics. Specifically, the water-use air conditioning system control device 6 learns the building characteristic 58, the radiator characteristic 59, and the water discharge temperature command reference value characteristic by executing the process of step S31 described above.

(Step S55)
The water-use air conditioning system control device 6 stores the building characteristics 58, the radiator characteristics 59, and the water temperature command reference value characteristics.

(Step S56)
The water-use air conditioning system control device 6 determines a control command for the water-use air conditioning system 1. Specifically, the water-use air conditioning system control device 6 determines the control command for the water-use air conditioning system 1 by executing the process of step S41 described above.

(Step S57)
The water-use air conditioning system control device 6 stores a control command for the water-use air conditioning system 1.

(Step S58)
The water-use air conditioning system control device 6 determines whether or not the control command transmission cycle has arrived. When the control command transmission cycle has arrived, the water-use air conditioning system control device 6 proceeds to step S59. On the other hand, when the control command transmission cycle has not arrived, the water-use air conditioning system control device 6 returns to step S58.

(Step S59)
The water-use air conditioning system control device 6 transmits a control command to the water-use air conditioning system 1 and ends the process.

(effect)
With the above configuration, the water-use air conditioning system control device 6 determines the control command for the water-use air-conditioning system 1, thereby executing control of the water-use air-conditioning system 1 so as to always improve the responsiveness and stability at room temperature. can do.

As described above, in the first embodiment, the water-use air conditioning system control device 6 used in the water-use air conditioning system 1 including the heat pump device 2 and the heat medium circuit that supplies the heat medium heated by the heat pump device 2 to the heat medium use device. A water-use air conditioning system data acquisition unit 51 that acquires operation data of the water-use air conditioning system 1, a characteristic learning unit 53 that learns the building characteristics 58 and the radiator characteristics 59 from the operation data of the water-use air conditioning system 1, A control command determination unit 52 that determines a control command to the water-use air conditioning system 1 so that the indoor temperature becomes a set temperature. The control command determination unit 52 has the building characteristics 58 and heat radiation learned by the characteristic learning unit 53. Outlet temperature command reference value determining unit 56 for determining the outlet water temperature command reference value based on the vessel characteristic 59, the outside air temperature, and the set temperature, the correction coefficient, the set temperature, and the room temperature. And a water discharge temperature command correction value determination unit 57 for determining a water discharge temperature command correction value based on the above, and taking the sum of the water discharge temperature command reference value and the water discharge temperature command correction value to the water-use air conditioning system 1 A water-use air conditioning system control device 6 that determines a control command is configured.
According to the above configuration, the water-use air conditioning system control device 6 sets the control parameters based on the learned building characteristics 58 and the radiator characteristics 59, so that the room temperature response can be obtained even when the connected radiator is unknown. Can increase sex and stability.

In the first embodiment, the building characteristic 58 is a value representing the heat insulation and airtightness of the building in which the water-use air conditioning system 1 is installed, and the radiator characteristic 59 is used for the water-use air conditioning system 1. It is the value showing the heat dissipation of the heatsink.
According to the above configuration, the water-use air-conditioning system control device 6 learns the characteristics of the building where the water-use air-conditioning system 1 is installed and the radiator connected to the water-use air-conditioning system 1 in the characteristic learning unit 53. Can do.

In the first embodiment, the characteristic learning unit 53 periodically learns the building characteristic 58 and the radiator characteristic 59 from the operation data of the water-use air conditioning system 1.
According to said structure, even when the performance of a heat radiator or a building air-conditioning heat source system changes by aged deterioration etc., the responsiveness and stability of room temperature can be improved.

In the first embodiment, the control command determination unit 52 uses the water discharge temperature command reference value determined by the water discharge temperature command reference value determination unit 56 only at the time of initial startup or when the set temperature is changed.
According to said structure, when outside temperature changes frequently, the fluctuation | variation of a water temperature command can be suppressed as much as possible.

Moreover, in Embodiment 1, the control command determination part 52 uses the water discharge temperature command reference value determined by the water discharge temperature command reference value determination part 56 for every control period.
According to said structure, even if external temperature changes, room temperature can be kept at preset temperature.

In the first embodiment, the control command determination unit 52 can manually set the building characteristics 58 and the radiator characteristics 59.
According to said structure, room temperature can be immediately maintained at preset temperature at the time of first time starting, the time of heat exchanger replacement | exchange, and the heat insulation repair of a building.

  From the above description, the water-use air conditioning system control device 6 can keep the control target space in a comfortable state particularly remarkably.

Embodiment 2. FIG.
(Variation of functional configuration of water-use air conditioning system controller 6)
The difference from the first embodiment is that the control command unit 55 is not provided. FIG. 14 is a diagram illustrating an example of a functional configuration of the water-use air conditioning system control device 6 according to Embodiment 2 of the present invention.

As shown in FIG. 14, the water use air conditioning system control device 6 according to the second embodiment is not provided with a control command unit 55. Here, when a control command is transmitted from the data storage unit 54 to the water-use air conditioning system 1, for example, a general control unit that performs overall control of a processor (not shown) or a water-use air conditioning system control device 6 (not shown) A control command may be transmitted from the unit 54 to the water-use air conditioning system 1. Further, if a data control unit (not shown) is configured in the data storage unit 54, a data control unit (not shown) may transmit a control command from the data storage unit 54 to the water-use air conditioning system 1.
When a control command is transmitted from the control command determination unit 52 to the water-use air conditioning system 1, the control command determination unit 52 obtains the control command and then transmits the obtained control command to the water-use air conditioning system 1. May be.

In any case, it is assumed that an identifier for designating the water-use air conditioning system 1, for example, an address of the water-use air-conditioning system 1 is set in the data storage unit 54 or the control command determination unit 52 in advance. If the address of the water-use air conditioning system 1 is not set in the data storage unit 54 or the control command determination unit 52 in advance, the control command is set in the data storage unit 54 or the control command determination unit 52 before transmission. It only has to be done.
From the above description, the water-use air conditioning system control device 6 can transmit the control command to the water-use air conditioning system 1 even if the control command unit 55 is not provided.

  1 water-use air conditioning system, 2 heat pump device, 3 pump, 4 radiator, 5 floor heating, 6 water-use air conditioning system control device, 7 water discharge temperature sensor, 8 indoor temperature sensor, 9 water return temperature sensor, 10 water flow rate sensor, DESCRIPTION OF SYMBOLS 11 Outside temperature sensor, 12 Three-way valve, 13 Tank, 14 Tank temperature sensor, 51 Water utilization air-conditioning system data acquisition part, 52 Control command determination part, 53 Characteristic learning part, 54 Data storage part, 55 Control command part, 56 Outlet temperature Command reference value determination unit, 57 water discharge temperature command correction value determination unit, 58 building characteristics, 59 radiator characteristics.

Claims (8)

An air conditioning system control device used in a water-based air conditioning system comprising: a heat pump device; and a transport device that circulates water heated or cooled by the heat pump device between the heat pump device and the heat medium utilization device,
As the operation data of the air conditioning system, an air conditioning system data acquisition unit that acquires at least a water discharge temperature that is the temperature of the water that has exited from the heat pump device, an indoor temperature of an air conditioning target room, and an outside air temperature;
A characteristic learning unit that learns the heat input / discharge characteristics of the building and the heat medium utilization device characteristics from the operation data of the air conditioning system,
A control command determining unit that determines a water discharge temperature command as a control command to the heat pump device so that the indoor temperature becomes a set temperature of the air-conditioning target room ;
With
It said control command determining unit, the water temperature command for the water outlet temperature based from the incoming heat radiation characteristics and the heat medium utilization device characteristics of the building as determined by the characteristic learning unit and the outside temperature and the set temperature in the following equation A water temperature command reference value determination unit for determining a reference value;

In the above formula, T _{w, s} is the water temperature command reference value [K], α is the heat input / heat dissipation characteristic [kW / K] of the building, and β is the heat dissipation characteristic of the radiator as the heat medium utilization device characteristic [ kW / _{K], T set,} the set temperature [K], _{T o} is the outside air temperature [K],
A water discharge temperature command correction value determination unit that determines a water discharge temperature command correction value of the water discharge temperature based on a correction coefficient, the set temperature, and the room temperature;
Have
An air conditioning system control device that determines the control command to the air conditioning system by taking the sum of the water temperature command reference value and the water temperature command correction value. The building heat input / dissipation characteristic is a value representing the heat insulation and building airtightness of the building where the air conditioning system is installed,
The air conditioning system control device according to claim 1, wherein the heat medium utilization device characteristic is a value representing a heat dissipation property of the heat medium utilization device used in the air conditioning system.   2. The characteristic learning unit periodically learns the heat input / output characteristics of the building and the characteristics of the heat medium utilization device from the operation data of the air conditioning system acquired by the air conditioning system data acquisition unit, respectively. Or the air-conditioning system control apparatus of 2.   The said control command determination part uses the said water discharge temperature command reference value determined by the said water discharge temperature command reference value determination part only at the time of initial starting or a preset temperature change, The any one of Claims 1-3 characterized by the above-mentioned. The air conditioning system control device according to item 1.   The air conditioning according to any one of claims 1 to 3, wherein the control command determination unit uses the water discharge temperature command reference value determined by the water discharge temperature command reference value determination unit for each control cycle. System controller.   The air conditioning system control device according to any one of claims 1 to 5, wherein the control command determination unit manually sets an incoming / outgoing heat dissipation characteristic and a heat medium utilization device characteristic of the building.   The air conditioning system control device according to any one of claims 1 to 6, wherein the heat medium utilization device is a radiator.   A plurality of correction coefficients for the discharge water temperature command correction value determining unit for determining the discharge water temperature command correction value are prepared in advance, and the air conditioner is operated for a predetermined period with each correction coefficient, and the deviation between the indoor temperature and the set temperature is determined. The air conditioning system control device according to any one of claims 1 to 7, wherein the air conditioning system control device is determined based on a total value.

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