JP6965624B2 - Air conditioning system selection device, air conditioning system selection method, program and recording medium - Google Patents

Description

The present invention relates to an air conditioning system selection device, an air conditioning system selection method, a program for executing the method, and a recording medium containing the program, and particularly to an air conditioning system selection device that supports selection of an air conditioning system installed in a building. ..

In a large building such as a high-rise building, an air conditioner system such as a multi air conditioner for a building having at least one outdoor unit and two or more indoor units is usually installed. When introducing such an air-conditioning system, for multiple air-conditioned spaces to be air-conditioned in the building, the area of each air-conditioned space (m ² ), the calculation reference load according to the type of industry (W / m ² ), etc. The heat load (kW) is calculated based on this, the indoor unit with the capacity (kW) according to the calculated heat load is selected, and the outdoor unit with the capacity according to the total capacity of each selected indoor unit is selected. ..

In addition, in order to simplify the refrigerant piping and electrical wiring and reduce costs, we designed a plurality of indoor units installed at positions close to each other to be connected to one outdoor unit together, and correspond to the connection form. A method such as selecting an outdoor unit with a capacity to be used is adopted.

So far, as a method of selecting heating and cooling equipment with appropriate capacity, for example, we have received information on the environmental conditions of the building where the heating and cooling equipment is installed, the size of the room, and at least the floor plan including the size of the annex room of the room. Based on the information about the floor plan, the correction value for correcting the information related to the required capacity of heating and cooling is obtained from the correction information data, and the information related to the required capacity of heating and cooling is obtained based on the size of the room and the correction value. The number of tatami mats is corrected, the required capacity for heating and cooling is acquired from the capacity data for each environment based on the corrected number of tatami mats, and the model information of the optimum equipment is acquired from the equipment information data based on the acquired required capacity and selected. A method of outputting as a result is disclosed (Patent Document 1).

In addition, in order to protect the global environment and save energy, the heat load of the entire building is calculated, an air conditioner with a capacity corresponding to the calculated heat load is tentatively selected, and the energy consumption of the tentatively selected air conditioner is calculated. A method of calculating based on the frequency of partial load occurrence of a building and selecting the air conditioner having the lowest life cycle cost based on the calculated energy consumption and the like is disclosed (Patent Document 2).

Japanese Patent No. 5480607 JP-A-2009-20640

However, when installing an air-conditioning system that connects an outdoor unit and an indoor unit in a building, the heat load is calculated and calculated based on the calculation standard load according to the area of each air-conditioned space and the type of industry as described above. If an outdoor unit with a capacity corresponding to the heat load is selected, or if several indoor units arranged close to each other are connected together to one outdoor unit, the capacity of the outdoor unit will increase. There was a problem that it would end up.

For example, if there are N air-conditioned spaces in a building and the maximum heat loads of the N air-conditioned spaces are Q _1max , Q _2max , ... Q _Nmax , respectively, then there are N air-conditioned spaces. The capacities of the indoor units installed correspondingly are Q _1max , Q _2max , ... Q _Nmax , respectively, and the capacity of the outdoor unit is usually the capacities of these indoor units Q _1max , Q _2max , ... Q. Determined to be equal to the sum of _Nmax. That is, the capacity of the outdoor unit corresponds to the total maximum heat load of each air-conditioned space, and when the above air-conditioning system is installed, the capacity corresponds to the total maximum heat load of each air-conditioned space. An outdoor unit with capacity must be selected. However, in reality, depending on the environment of the air-conditioned space, the timing of the maximum heat load corresponding to each air-conditioned space may be different in a plurality of air-conditioned spaces, so that the outdoor unit operates at the maximum capacity. The operation time is short, and the remaining time is low load operation.

That is, since the conventional air-conditioning system selection method does not consider the timing shift of the maximum heat load (peak) of each air-conditioned space, the capacity is increased even though the operation time at the maximum capacity is actually short. It is necessary to select a large outdoor unit, and the operation efficiency is lowered due to the low load operation for a long time, and the initial cost of the outdoor unit is increased. Further, since the power consumption of the outdoor unit generally increases according to the capacity, when an outdoor unit having a large capacity is selected, the power consumption increases and the running cost increases.

An object of the present invention is an air-conditioning system selection device and an air-conditioning system capable of reducing the environmental load, energy saving, and cost reduction by optimizing the capacity of the outdoor unit installed in the building. The purpose is to provide selection methods, programs and recording media.

In order to achieve the above object, the air conditioner system selection device according to the present invention is an air conditioner system selection device that selects the capacity of an air conditioner system having a plurality of indoor units and at least one outdoor unit, and is at least one indoor unit. Based on the heat load condition information indicating the heat load conditions of two or more air-conditioned spaces in the building where each machine is installed, a plurality of predicted heat load values corresponding to each of the two or more air-conditioned spaces are calculated for each time. A first calculation unit that calculates in the above, a determination unit that determines whether or not there is a difference in the timing at which the predicted heat load values of the two or more air-conditioned spaces become maximum within a certain period, and the two or more objects. The second calculation unit that calculates the total heat load prediction value by adding the plurality of heat load prediction values for each time when the timing at which the heat load prediction value of the air-conditioning space becomes maximum is deviated, and the total heat It is characterized by having a capacity determination unit that determines the total capacity of at least one outdoor unit connected to the plurality of indoor units based on the maximum value of the load prediction value.

Further, the capacity determining unit determines the total capacity of the plurality of indoor units based on the maximum value of the predicted heat load values of the two or more air-conditioned spaces, and sets the total capacity of the plurality of indoor units to the maximum value of the predicted total heat load value. Based on this, the total capacity of at least one outdoor unit connected to the plurality of indoor units is determined.

Further, the two or more air-conditioned spaces include an east-side air-conditioned space located on the east side of the building and a west-side air-conditioned space located on the west side of the building, and at least one room in the east-side air-conditioned space. At the same time as the machine is installed, at least one indoor unit may be installed in the western air-conditioned space.

Further, a plurality of indoor units are installed in the east side air-conditioned space, and a plurality of indoor units are installed in the west side air-conditioned space. The at least one outdoor unit is composed of a plurality of outdoor units, and the east side. A part of the plurality of indoor units installed in the air-conditioned space is connected to the outdoor unit of one of the plurality of outdoor units, and among the plurality of indoor units installed in the western air-conditioned space. A part of the above is connected to the one outdoor unit, and the rest of the plurality of indoor units installed in the east side air-conditioned space is connected to the other outdoor unit among the plurality of outdoor units. The rest of the plurality of indoor units installed in the western air-conditioned space may be connected to the other outdoor unit.

In addition, the determination unit determines whether or not there is a time lag at the time when the predicted heat load values of the two or more air-conditioned spaces become maximum in one day, and the second calculation unit determines whether or not the two or more calculation units have the same time. When the time at which the predicted heat load value of the air-conditioned space becomes maximum is deviated, the total heat load predicted value may be calculated by adding the plurality of heat load predicted values for each time.

In order to achieve the above object, the air conditioner system selection method of the present invention is an air conditioner system selection method executed by a computer to select the capacity of an air conditioner system having a plurality of indoor units and at least one outdoor unit. , A plurality of heat loads corresponding to each of the two or more air-conditioned spaces based on the heat load condition information indicating the heat load conditions of the two or more air-conditioned spaces in the building where at least one indoor unit is installed. A step of calculating the predicted value for each time, a step of determining whether or not there is a difference in the timing at which the predicted heat load values of the two or more air-conditioned spaces are maximized within a certain period, and the above two or more steps. When there is a difference in the timing at which the predicted heat load value of the air-conditioned space becomes maximum, the step of calculating the total heat load predicted value by adding the plurality of heat load predicted values for each time and the total heat load predicted value. It is characterized by having a step of determining the total capacity of at least one outdoor unit connected to the plurality of indoor units based on the maximum value of.

In order to achieve the above object, the program of the present invention causes a computer to execute an air conditioning system selection method for selecting the capacity of an air conditioning system having a plurality of indoor units and at least one outdoor unit, a computer-readable recording medium. Based on the heat load condition information indicating the heat load conditions of two or more air-conditioned spaces in the building where at least one indoor unit is installed, the program recorded in It is determined whether or not there is a difference between the step of calculating a plurality of predicted heat load values corresponding to each time for each time and the timing at which the predicted heat load values of the two or more air-conditioned spaces are maximized within a certain period of time. When there is a difference between the step to be performed and the timing at which the predicted heat load values of the two or more air-conditioned spaces are maximized, the step of calculating the total heat load predicted value by adding the plurality of heat load predicted values for each time. It is characterized by having a step of determining the total capacity of at least one outdoor unit connected to the plurality of indoor units based on the maximum value of the total heat load predicted value.

Further, a computer-readable recording medium containing the air conditioning system selection program is provided.

Further, an air conditioning system having a plurality of indoor units and at least one outdoor unit and selected by any of the above air conditioning system selection devices is provided.

According to the present invention, it is possible to optimize the capacity of the outdoor unit installed in the building, reduce the environmental load, realize energy saving, and further reduce the cost.

It is a figure for demonstrating the air-conditioning system selection apparatus which concerns on embodiment of this invention. It is the schematic which shows an example of a system. It is a schematic diagram which shows the relationship between a building to be air-conditioned of an air-conditioning system and solar radiation. It is a block diagram which shows schematic the hardware composition of the air-conditioning system selection apparatus which concerns on this embodiment. It is a functional block diagram of the control part in FIG. It is a flowchart which shows the air-conditioning system selection method which concerns on this Embodiment. It is a graph for demonstrating the optimization of the outdoor unit capacity executed by the air-conditioning system selection method which concerns on this embodiment, and (a) is the figure which shows the time variation of the total heat load predicted value in each air-conditioned space, (a). b) is a diagram showing a comparison between the outdoor unit capacity determined in the present embodiment and the outdoor unit capacity determined by the conventional method. It is a figure for demonstrating the modification of the air-conditioning system of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Configuration of air conditioning system>
FIG. 1 is a diagram for explaining an air-conditioning system selection device according to an embodiment of the present invention, (a) is a plan view showing a building to be air-conditioned by the air-conditioning system, and (b) is an air-conditioning system selection device. It is a schematic diagram which shows an example of the air-conditioning system to be selected.

First, as shown in FIG. 1A, the building 2 has a first air-conditioned space 4A and a second air-conditioned space 4B, and the first air-conditioned space 4A and the second air-conditioned space. A partition wall 3 is provided between 4B. In the present embodiment, the first air-conditioned space 4A (east side air-conditioned space) is located on the east side of the building 2, and the second air-conditioned space 4B (west side air-conditioned space) is located on the west side of the building 2. There is.
The air conditioner system 1 of the present embodiment has two air conditioner unit units composed of a plurality of indoor units and one outdoor unit (see FIG. 1B), for example, four indoor units. Air conditioner unit unit 7-1 composed of 6A-1, 6A-2, 6B-1, 6B-2 and outdoor unit 5-1 and four indoor units 6A-3, 6A-4, 6B-3, It has an air conditioner unit unit 7-2 composed of 6B-4 and an outdoor unit 5-2.

In the first air-conditioned space 4A, for example, two indoor units 6A-1 and 6A-2 of the air-conditioning unit unit 7-1 and two indoor units 6A- of the air-conditioning unit 7-2. 3, 6A-4 are installed, and in the second air-conditioned space 4B, for example, two indoor units 6B-1 and 6B-2 of the air-conditioning unit unit 7-1 and the air-conditioning unit unit 7-2 are installed. Two of these indoor units 6B-3 and 6B-4 are installed, respectively.

Two outdoor units 5-1 and 5-2 are installed outside the building 2, for example, on the roof of the building 2, and the outdoor unit 5-1 is connected via a connection line 8-1 such as piping and wiring. The outdoor unit 5-2 is connected to the four indoor units 6A-1, 6A-2, 6B-1, and 6B-2, and the outdoor unit 5-2 is connected to the four indoor units 6A-3 via the connection line 8-2. , 6A-4, 6B-3, 6B-4, respectively. That is, the indoor units 6A-1 and 6A-2, which are a part of the indoor units 6A- 1 to 6A-4 (first indoor unit) installed in the first air-conditioned space 4A, are the outdoor units 5. Indoor unit 6B connected to outdoor unit 5-1 (one outdoor unit) which is a part of -1,5-2 (plural outdoor units) and installed in the second air-conditioned space 4B. The indoor units 6B-1 and 6B-2, which are a part of -1 to 6B-4 ( second indoor unit), are connected to the outdoor unit 5-1. Further, the indoor units 6A-3 and 6A-4, which are the rest of the indoor units 6A-1 to 6A-4 installed in the first air-conditioned space 4A, are among the outdoor units 5-1 and 5-2. The indoor unit, which is the remainder of the plurality of indoor units 6B-1 to 6B-4 connected to the outdoor unit 5-2 (another outdoor unit) and installed in the second air-conditioned space 4B. The machines 6B-3 and 6B-4 are connected to the outdoor unit 5-2.

FIG. 2 is a schematic diagram showing the relationship between the building 2 to be air-conditioned by the air-conditioning system 1 and solar radiation.
As shown in FIG. 2, the building 2 generally receives a large amount of sunlight on its east side in the morning and a large amount of sunlight on its west side in the afternoon. Therefore, when comparing the heat load of the first air-conditioned space 4A on the east side and the second air-conditioned space 4B on the west side at a certain time in the morning, the solar heat load due to the sunlight incident on the room through windows and the like and the building The heat load of the first air-conditioned space 4A on the east side is larger than that of the second air-conditioned space 4B due to the once-through heat load through the window and the outer wall of 2. On the other hand, comparing the heat load of the first air-conditioned space 4A on the east side and the second air-conditioned space 4B on the west side at a certain time in the afternoon, the heat load of the second air-conditioned space 4B on the west side is the first. It is larger than the air-conditioned space 4A. Further, in particular, since the influence of the external environment is large in the perimeter zone in the range of about 3.5 m to 5 m from the window and the outer wall of the building 2, the heat load of the perimeter zone in the first air-conditioned space 4A and the second air-conditioned The difference from the heat load of the perimeter zone of space 4B becomes larger. As described above, the time variation of the heat load of the first air-conditioned space 4A on the east side and the time variation of the heat load of the second air-conditioned space 4B on the west side are different from each other, and the first air-conditioned space 4A and the first air-conditioned space 4A and the first. The timing at which the heat load of the air-conditioned space 4B of No. 2 is maximized is deviated.
Therefore, the air-conditioning system selection device of the present invention considers the timing difference of the maximum heat load (peak) of the first air-conditioned space 4A and the second air-conditioned space 4B, and provides the air-conditioning system 1 as described above. Select the configuration (combination) and arrangement of the air conditioning unit units 7-1 and 7-2 to be configured.

<Configuration of air conditioning system selection device>
FIG. 3 is a block diagram schematically showing the hardware configuration of the air conditioning system selection device 10 of the present invention. The configuration of FIG. 3 shows an example thereof, and the configuration to which the air conditioning system selection device 10 according to the present invention is applied is not limited to that of FIG.
The air conditioning system selection device 10 of FIG. 3 is a computer that selects the air conditioning system 1 to be introduced in the building 2, and includes a control unit 20 and, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and / or a hard disk drive. A storage unit 30 including a storage unit 30, a communication interface (I / F) 40, an input unit 50, and an output unit 60 are included, and each of them is connected via a bus 70.

The control unit 20 is composed of a processor of a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and comprehensively controls the operation and various processes of the air conditioning system selection device 10. The control unit 20 is configured to be able to realize the air conditioning system selection method by appropriately reading and executing the air conditioning system selection program stored in the storage unit 30 in advance. The detailed operation and various processes of the air conditioning system selection device 10 will be described later.

The storage unit 30 stores an air-conditioning system selection program necessary for the control unit 20 to execute a process of selecting an air-conditioning system and various information used for various processes. The storage unit 30 is composed of a non-transient and computer-readable recording medium.
The air conditioning system selection device 10 is connected to a network such as a LAN or the Internet connected to the communication interface 40, and can communicate with an external system or the like by wire or wirelessly. In the present embodiment, the server 90 is connected to the server 90 via, for example, the communication network 80 connected to the communication interface 40. The server 90 has a database such as a heat load condition database 91, an indoor unit database 92, and an outdoor unit database 93. The server 90 may be communicatively connected to a BIM server that stores attribute information of a building for realizing BIM (Building Information Modeling), and may be configured to acquire or update data from the BIM server.

The heat load condition database 91 can store various data such as weather conditions and design conditions such as building conditions and indoor conditions. Meteorological conditions include, for example, meteorological condition areas, outside air conditions, outside air temperature and humidity, underground temperature, solar altitude, glass solar radiation, and equivalent outside air temperature. The building conditions include, for example, building azimuth, non-air-conditioned room temperature, window glass, thermal transmission of walls, winter orientation coefficient, and partial load factor. The indoor conditions include, for example, lighting, draft, heat generation of equipment, human body density, outside air load, and operating time.

The indoor unit database 92 stores data on the capacity of the indoor unit in association with data indicating a predicted heat load value of the air-conditioned space. The outdoor unit database 93 stores data related to the capacity of the outdoor unit in association with data representing a predicted heat load value of the air-conditioned space and data such as the capacity and number of connectable indoor units.

The server 90 has the cost per capacity of the outdoor unit (yen / kW), the partial load characteristics of the outdoor unit, the amortization period of the outdoor unit and the indoor unit, the power consumption of the outdoor unit and the indoor unit, the indoor unit and the outdoor unit. Various data regarding the arrangement of the refrigerant piping / electrical wiring cost, constraint conditions such as the maximum length of the piping / wiring, etc. may be stored, and the above various data may be used when selecting the outdoor unit or the indoor unit. ..
Further, in the present embodiment, the server 90 has databases such as a heat load condition database 91, an indoor unit database 92, and an outdoor unit database 93, and the storage unit 30 of the air conditioning system selection device 10 has these databases and various other databases. You may have a database.

FIG. 4 is a functional block diagram of the control unit 20 in FIG. The control unit 20 of the air conditioning system selection device 10 executes the air conditioning system selection method according to the functions of the functional blocks of FIG.
As shown in FIG. 4, the control unit 20 includes a heat load condition acquisition unit 201, a heat load prediction value calculation unit 202, a maximum heat load calculation unit 203, a determination unit 204, and a total heat load calculation unit 205. It has a maximum total heat load calculation unit 206. The air conditioning system selection method is realized by the computer in the air conditioning system selection device 10 executing the air conditioning system selection program (software) recorded in the storage unit 30 (hardware).

The heat load condition acquisition unit 201 is used for user input via an input unit 50 such as a keyboard, mouse, or touch panel, communication with a server 90 via a communication interface (I / F) 40, or a communication interface (I / F). Various heat load condition data of the first air-conditioned space 4A and the second air-conditioned space 4B in the building 2 are acquired by communication with another computer or the like via the 40, and the acquired heat load conditions. The data is temporarily stored in the storage unit 30.

_{The heat load prediction value calculation unit 202 has a heat load prediction value q E} and a second cover corresponding to each of the first air-conditioned space 4A based on the heat load condition data acquired by the heat load condition acquisition unit 201. _{The heat load predicted value q W} corresponding to the air-conditioned space 4B is calculated for each time at regular time intervals. The fixed time interval may be in units of hours or minutes. Further, the heat load prediction value calculation unit 202 may calculate the heat load prediction value in cooperation with the server 90 which is communicably connected via the communication interface 40.

_{The maximum heat load calculation unit 203 has a heat load prediction value q E} (t) corresponding to the first air-conditioned space 4A calculated by the heat load prediction value calculation unit 202 and heat corresponding to the second air-conditioned space 4B. Based on the predicted load value q _{W (t), the maximum value q E} (t) _max of the predicted heat load value of the first air-conditioned space 4A and the second air-conditioned space 4B within a certain period, for example, one day. _{The maximum value q W} (t) _max of the predicted heat load value of is obtained. The above-mentioned heat load prediction value calculation unit 202 and maximum heat load calculation unit 203 constitute the first calculation unit.

Judging unit 204, the deviation between the first and the timing _{t MaxqE} thermal load prediction value is maximized in the air-conditioned space 4A, a timing _{t MaxqW} thermal load prediction value of the second of the air-conditioned space 4B is maximum Is determined. For example, when the first air-conditioned space 4A and the second air-conditioned space 4B are arranged as shown in FIGS. 1A and 2, the predicted heat load value of the first air-conditioned space 4A is morning. The maximum is in the middle, and the predicted heat load of the second air-conditioned space 4B is maximum in the afternoon. Therefore, the deviation in timing _{t MaxqW} thermal load prediction value of the first heat load prediction value of the air-conditioned space. 4A maximum timing _{t MaxqE} comprising a second of the conditioned space 4B is maximum occurs (FIG. 6 (a )reference).

Total heat load calculation unit 205, a deviation in timing t _MaxqW thermal load prediction value of the first heat load prediction value of the air-conditioned space. 4A maximum timing t _MaxqE comprising a second of the conditioned space 4B is maximum When it is determined that the heat load is generated, the predicted heat load value q _{E (t) of the first air-conditioned space 4A and the predicted heat load q W} (t) of the second air-conditioned space 4B are set at predetermined time t. The total heat load predicted value q _C (t) = q _E (t) + q _W (t) is calculated (see FIG. 6 (a)).

The maximum total heat load calculation unit 206 is the maximum of the total heat load prediction value q _c (t) obtained by the total heat load calculation unit 205, that is, the maximum value of the total heat load prediction value q _C (t) _max = (q). _E (t) + q _W (t)) _max is calculated. The total heat load calculation unit 205 and the maximum total heat load calculation unit 206 constitute the second calculation unit.

The capacity determining unit 207 determines the total capacity of a plurality of indoor units in the entire air conditioning system 1 based on _{the maximum value q C} (t) _{max of the predicted heat load value, and determines the total capacity of at least one outdoor unit.} decide. Specifically, the capacity determination unit 207 determines the total capacity Qc'of the plurality of indoor units in the entire air conditioning system 1 to a value equal to the maximum value q _C (t) _max of the total heat load prediction value, and further. the total capacity Q _C of at least one outdoor unit in the entire air conditioning system 1, determines a maximum value equal to the q _{C (t) max} of the total heat load predicted value.

The air conditioner system selection device 10 further includes an indoor unit information acquisition unit 208, an indoor unit selection unit 209, an outdoor unit information acquisition unit 210, an outdoor unit selection unit 211, and a result information display processing unit 212. May be good.
The indoor unit information acquisition unit 208 acquires various data related to the indoor unit by user input via the input unit 50, or acquires various data related to the indoor unit from the indoor unit database 92 capable of communicating via the communication interface 40. do.

_{The indoor unit selection unit 209 has the maximum value q E} (t) _max of the heat load prediction value of the first air-conditioned space 4A acquired by the maximum heat load calculation unit 203 and the heat load prediction of the second air-conditioned space 4B. Based on the maximum value q _W (t) _max , the type and number of indoor units to be installed in the first air-conditioned space 4A and the second air-conditioned space 4B are selected with reference to the indoor unit database 92.

The outdoor unit information acquisition unit 210 acquires various data related to the outdoor unit by user input via the input unit 50, or acquires various data related to the outdoor unit from the outdoor unit database 93 capable of communicating via the communication interface 40. do.

The outdoor unit selection unit 211 refers to the outdoor unit database 93 based on _{the maximum value q C} (t) _max of the total heat load predicted value acquired by the maximum total heat load calculation unit 206, and the indoor unit selection unit 209 Select the type and number of outdoor units that can be connected to the selected multiple indoor units.

The result information display processing unit 212 displays, for example, information indicating the outdoor unit determined by the outdoor unit selection unit 211 as selection result information on a display device or the like connected to the output unit 60. At this time, the selection result information may include information indicating the indoor unit determined by the indoor unit selection unit 209. That is, the selection result information may be a combination of the information indicating the indoor unit determined by the indoor unit selection unit 209 and the information indicating the outdoor unit determined by the outdoor unit selection unit 211. When a combination of a plurality of indoor units and at least one outdoor unit is displayed as selection result information, the selection result information is one air conditioning unit composed of one outdoor unit and all the plurality of indoor units. It may be unit information, or information on two or more air conditioning unit units composed of two or more outdoor units and one or more indoor units connected to each of the two or more outdoor units. There may be.

In the present embodiment, as described above, the building 2 is provided with two air-conditioned spaces, that is, a first air-conditioned space 4A and a second air-conditioned space 4B, for example, in the first air-conditioned space 4A. A total of eight indoor units will be installed, with four indoor units and four indoor units in the second air-conditioned space 4B. Further, one outdoor unit is used for two indoor units in the first air-conditioned space 4A and two indoor units in the second air-conditioned space 4B, and two indoor units in the first air-conditioned space 4A. One outdoor unit is connected to each of the two indoor units in the second air-conditioned space 4B, and a total of two outdoor units are installed (FIG. 1 (a)).

However, depending on the design conditions, another combination for connecting the two outdoor units, the four indoor units in the first air-conditioned space 4A, and the four indoor units in the second air-conditioned space 4B is selected. be able to.
For example, as shown in Table 1, one indoor unit in the first air-conditioned space 4A and one indoor unit in the second air-conditioned space 4B are connected to the outdoor unit 5-1 and the remaining indoor units. The number of combinations when connecting to the outdoor unit 5-2 is ₄ C ₁ × ₄ C ₁ = 16. Further, one indoor unit in the first air-conditioned space 4A and two indoor units in the second air-conditioned space 4B are connected to the outdoor unit 5-1 and the remaining indoor units are connected to the outdoor unit 5-2. The number of combinations when connecting is ₄ C ₁ x ₄ C ₂ = 24. One indoor unit in the first air-conditioned space 4A and three indoor units in the second air-conditioned space 4B are connected to the outdoor unit 5-1, and the remaining indoor units are connected to the outdoor unit 5-2. The number of combinations in the case is ₄ C ₁ × ₄ C ₃ = 16. One indoor unit in the first air-conditioned space 4A and four indoor units in the second air-conditioned space 4B are connected to the outdoor unit 5-1, and the remaining indoor units are connected to the outdoor unit 5-2. The number of combinations in the case is ₄ C ₁ × ₄ C ₄ = 4.
In the same manner as above, all combinations are made under the condition that the two outdoor units are connected to the four indoor units in the first air-conditioned space 4A and the four indoor units in the second air-conditioned space 4B. Table 1 shows the results of determining the number of.

As described above, although there are a plurality of combinations when the number of outdoor units is two or one, the timing t _{maxqE at} which the predicted heat load value of the first air-conditioned space 4A becomes maximum and the second air-conditioned space 4B _{As long as there is a deviation in the timing t maxqW at} which the predicted heat load value is maximized, the number of indoor units installed in the first air-conditioned space 4A and the number of indoor units installed in the second air-conditioned space 4B are determined by heat. It can be appropriately selected according to the magnitude of the predicted load value.

When all the outdoor units are of the same type, or when all the indoor units are of the same type, the number of combinations is smaller than the above.
Further, even when there are three or more outdoor units, at least one indoor unit can be connected to each of the three outdoor units, and a combination can be obtained in the same manner as described above. Thereby, the configuration (combination) and arrangement of the air conditioner unit unit composed of a plurality of indoor units and at least one outdoor unit can be selected.

<Air conditioning system selection method>
FIG. 5 is a flowchart showing a method for selecting an air conditioning system according to the present embodiment. The air conditioning system selection method is executed by the control unit 20, and various data stored in the storage unit 30 are read out according to each step of this process.
First, the control unit 20 refers to the first air-conditioned space 4A and the second air-conditioned space 4B in the building 2 from the heat load condition database 91 of the server 90 capable of communicating via the input unit 50 or the communication interface 40. Acquire heat load condition information indicating the heat load condition (step S1).

Next, the control unit 20 receives the first air-conditioned space 4A and the second air-conditioned space 4A and the second air-conditioned space 4A based on the heat load condition information indicating the heat load conditions of the first air-conditioned space 4A and the second air-conditioned space 4B. A plurality of predicted heat load values q _E (t) and q _W (t) corresponding to each of the spaces 4B are calculated for each time (step S2).

Then, within a certain period of time, for example, in one day, the timing t at which the _{predicted heat load values q E} (t) and q _{W (t) of the first air-conditioned space 4A and the second air-conditioned space 4B are maximized, respectively. maxqE} and t _maxqW are determined (step S3).

Next, whether or not there is a deviation in the _{timings t maxqE} and t _{maxqW at which the predicted heat load values q E} (t) and q _W (t) of the first air-conditioned space 4A and the second air-conditioned space 4B are maximized. Is determined (step S4). When it is determined that the _{timings t maxqE} and t _{maxqW at which the predicted heat load values q E} (t) and q _W (t) of the first air-conditioned space 4A and the second air-conditioned space 4B are maximized are deviated. (Step S4: YES), the total heat load predicted value qc (t) = (q _E (t) + q _{W ) obtained by adding the plurality of heat load predicted values q E} (t) and q _{W (t) for each time.} (T)) _{Calculate max} (step S5). _{When the timings t maxqE} and t _{maxqW at which the predicted heat load values q E} (t) and q _W (t) of the first air-conditioned space 4A and the second air-conditioned space 4B are maximized are not deviated ( Step S4: NO), the process of FIG. 5 is completed.

_{Next, the maximum value q C} (t) _max of the total heat load prediction value qc (t) is calculated based on the total heat load prediction value qc (t) calculated in step S5 (step S6).

After that, it is connected to the indoor unit installed in the first air-conditioned space 4A and the second air-conditioned space 4B based on _{the calculated maximum value q C} (t) _max of the total heat load predicted value qc (t). determining the total capacity _{Q C} of the two outdoor units (step S7).

After determining the total capacity Q _C of the outdoor unit, through a display device or the like connected to the output unit 60, and outputs the result information containing the total capacity Q _C of the two outdoor units to the user (step S8). In this method, the total capacity of the two outdoor units is determined, but the present invention is not limited to this, and the total capacity of one or three or more outdoor units may be determined. The air conditioning system selection method according to the present embodiment does not have to include step S8.

FIG. 6 is a graph for explaining the optimization of the outdoor unit capacity executed by the air conditioning system selection method according to the present embodiment, and FIG. 6A is a first air-conditioned space 4A and a second air-conditioned space. The figure which shows the time variation of the total heat load predicted value q _C (t) in 4B, (b) is the figure which shows the comparison between the outdoor unit capacity determined by this embodiment and the outdoor unit capacity determined by a conventional method. be.
As shown in FIG. 6A, when air-conditioning the first air-conditioned space 4A and the second air-conditioned space 4B as in the present embodiment, for example, in one day, the first air-conditioned space 4A and the second There is a deviation in the timing at which the _{predicted heat load values q E} (t) and q _W (t) corresponding to the air-conditioned space 4B of the above _{are maximized (t maxqE} ≠ t _maxqW ). That is, the sum of the predicted heat load values q _E (t) and q _W (t) due to the non-simultaneous occurrence of the maximum values of the predicted heat load values q _E (t) and q _W (t). The predicted heat load value q _C (t) = (q _E (t) + q _W (t)) indicates the time variation as shown in the figure.

At this time, the maximum value q _C (t) _max = (q _E (t) + q _W (t)) _max of the total heat load predicted value q _C (t) becomes a value as shown in FIG. 6 (b). smaller than the sum of the maximum value _q W _{(t) max} of the maximum value _q E of the thermal load prediction value _{q E (t) (t)} max and the thermal load prediction value _q W (t), the following inequality holds.
q _C (t) _max {= (q _E (t) + q _W (t)) _max } <(q _E (t) _max + q _W (t) _max )

Therefore, if the maximum value q _C (t) _max of the total heat load predicted value is determined by the method of the present embodiment, the capacity of the outdoor unit (q _E (t) _max + q _W (t) _{max) determined by the conventional method is determined.} ), It is possible to reduce the capacity corresponding to Δq = (q _E (t) _max + q _W (t) _max ) − (q _E (t) + q _W (t)) _max.

As described above, according to the present embodiment, there is a difference in the timing at which the predicted heat load values of the first air-conditioned space 4A and the second air-conditioned space 4B located on the east side and the west side of the building 2 are maximized. In this case, a total heat load prediction value is calculated by adding a plurality of heat load prediction values for each time, and a plurality of indoor units 6A-1, 6A-2, 6B are calculated based on the maximum value of the total heat load prediction value. The capacity of the outdoor unit 5-1 connected to -1,6B-2 and the capacity of the outdoor unit 5-2 connected to the plurality of indoor units 6A-3, 6A-4, 6B-3, 6B-4. Since the total capacity that is the sum is determined, the capacity of the outdoor units 5-1 and 5-2 installed in the building 2 can be optimized, and the outdoor unit 5- in the air conditioning system 1 can be compared with the conventional method. The capacity of 1,5-2 can be reduced. Further, when the outdoor unit is designed and manufactured so that the operating efficiency is better than that in the low load state when the outdoor unit is operated at the maximum capacity (or the maximum output) or in a state close to the maximum capacity (or the maximum output), the selection method of the present embodiment. If the capacity of the outdoor units 5-1 and 5-2 is selected in, the time for operating the outdoor units 5-1 and 5-2 at the maximum capacity or in a state close to the maximum capacity can be made longer than before. The operating efficiency can be improved. Therefore, the environmental load can be reduced, energy saving can be realized, and the cost can be reduced.

7A and 7B are views for explaining a modified example of the air conditioning system of FIG. 1, where FIG. 7A is a plan view showing a building to be air-conditioned, and FIG. 7B is a schematic view showing a modified example of the air-conditioning system. .. The air-conditioning system of FIG. 1 is provided with two outdoor units, but the air-conditioning system of FIG. 7 is different in that only one outdoor unit is provided. That is, the case where the combination shown in the pattern 16 in Table 5 is selected by the air conditioning system selection device 10 of the present embodiment will be described.

As shown in FIGS. 7A and 7B, the air conditioner system 300 has one air conditioner unit unit composed of a plurality of indoor units and one outdoor unit, and specifically, 4 It is composed of one indoor unit 311A-1, 311A-2, 311A-3, 311A-4, four indoor units 311B-1, 311B-2, 311B-3, 311B-4, and an outdoor unit 310. It has an air conditioner unit 301.
In the first air-conditioned space 4A, four indoor units 311A-1 to 311A-4 of the air-conditioning unit unit 301 are arranged, and in the second air-conditioned space 4B, the four indoor units of the air-conditioning unit unit 301 are arranged. Machines 311B-1 to 311B-4 are arranged.

An outdoor unit 310 is arranged outside the building 2, and the outdoor unit 310 is connected to the indoor units 311A-1 to 311A-4 and 311B-1 to 311B-4 via a connection line 312 such as piping and wiring. Each is connected.

As described above, there is a difference in the timing at which the predicted heat load values of the first air-conditioned space 4A and the second air-conditioned space 4B located on the east side and the west side of the building 2 are maximized. By selecting the capacity of one outdoor unit 310 by the air conditioning system selection method, it is possible to extend the operation time of the outdoor unit 310 at the maximum capacity or in a state close to it, and improve the operation efficiency. Can be made to. Therefore, the environmental load can be reduced, energy saving can be realized, and the cost can be reduced.

Further, in the above embodiment, the case where there are two air-conditioned spaces has been described, but the air-conditioning system selection device 10 according to the present embodiment is also applied to the case where two or more n air-conditioned spaces exist. be able to. For example, when it is determined that the timing at which the predicted heat load values of the n air-conditioned spaces are maximized is deviated (see step S4), the total heat load calculation unit 205 uses the heat load of the n air-conditioned spaces. _{The total heat load predicted value q C} (t) is calculated by adding the predicted values q ₁ (t), ..., Q _n (t) at each time t (see step S5). At this time, the total heat load predicted value q _C (t) in the n air-conditioned spaces is expressed by the following general formula.

The maximum total heat load calculation unit 206 is the maximum value q _C (t) of the total heat load predicted value q _{C (t) obtained by adding the heat load predicted values q n (t) of n air-conditioned spaces for each time t.} ) Calculate _max. The capacity determination unit 207, the total capacity Q _C of the outdoor unit of the entire air conditioning system installed in a building 2 is determined to be equal to the sum heat load predicted value q _{C (t) max.} In this case, the total capacity Q _C of the outdoor unit of the entire air conditioning system is represented by the general formula below.

よって、ｎ個の被空調空間について空調システム選定装置１０によって空調システム全体の室外機の総容量Ｑ_Ｃを決定すれば、従来方法と比較して、下記Δｑに相当する室外機容量を削減することが可能となる。

On the other hand, when determining the capacity of the outdoor unit in a conventional method, the total capacity Q _n of the outdoor unit of the entire air conditioning system is represented by the general formula below.

Therefore, when the n determines the total capacity Q _C of the outdoor unit of the entire air-conditioning system by the air conditioning system selection device 10 for the air-conditioned space, as compared with the conventional method, reducing the capacity of the outdoor unit corresponding to the following Δq Is possible.

Although the air-conditioning system selection device, the air-conditioning system selection method, the program executed by the method, and the recording medium according to the above-described embodiment have been described above, the present invention is not limited to the described embodiment, and the present invention is not limited to the described embodiment. Various modifications and changes are possible based on the technical idea.

For example, in the present embodiment, a plurality of indoor units are installed in the first air-conditioned space 4A, and a plurality of indoor units are installed in the second air-conditioned space. At least one indoor unit may be installed in the air-conditioned space 4A, and at least one indoor unit may be installed in the second air-conditioned space 4B.

Further, in the above embodiment, the first air-conditioned space 4A is located on the east side of the building 2, and the second air-conditioned space 4B is located on the west side of the building 2, but the arrangement of the two air-conditioned spaces. Is not limited to this. Two air-conditioned spaces where there is a time variation between the heat load of one air-conditioned space and the heat load of the other air-conditioned space, and the timing at which the corresponding predicted heat load is maximized is different. It may be selected as the first air-conditioned space and the second air-conditioned space in the present invention. Further, two or more air-conditioned spaces in which the timing at which the predicted heat load becomes maximum is deviated may be selected as the two or more air-conditioned spaces in the present invention.

1 Air-conditioning system 2 Building 3 Partition wall 4A 1st air-conditioned space 4B 2nd air-conditioned space 5-1 to 5-2 Outdoor unit 6A-1, 6A-2, 6A-3, 6A-4 Indoor unit 6B- 1,6B-2, 6B-3, 6B-4 Indoor unit 7-1 Air conditioning unit unit 7-2 Air conditioning unit unit 8-1 Connection line 8-2 Connection line 10 Air conditioning system selection device 20 Control unit 30 Storage unit 40 Communication Interface (I / F)
50 Input unit 60 Output unit 70 Bus 80 Communication network 90 Server 91 Heat load condition database 92 Indoor unit database 93 Outdoor unit database 201 Heat load condition acquisition unit 202 Heat load prediction value calculation unit 203 Maximum heat load calculation unit 204 Judgment unit 205 Total Heat load calculation unit 206 Maximum total heat load calculation unit 207 Capacity determination unit 208 Indoor unit information acquisition unit 209 Indoor unit selection unit 210 Outdoor unit information acquisition unit 211 Outdoor unit selection unit 212 Result information display processing unit 300 Air conditioning system 301 Air conditioning unit 310 Outdoor unit 311A-1, 311A-2, 311A-3, 311A-4 Indoor unit 311B-1, 311B-2, 311B-3, 311B-4 Indoor unit 312 Connection line

Claims (8)

An air conditioner system selection device that selects the capacity of an air conditioner system having a plurality of indoor units and at least one outdoor unit.
Multiple heat load predictions corresponding to each of the two or more air-conditioned spaces based on the heat load condition information indicating the heat load conditions of the two or more air-conditioned spaces in the building where at least one indoor unit is installed. The first calculation unit that calculates the value for each time, and
A determination unit that determines whether or not there is a deviation in the timing at which the predicted heat load values of the two or more air-conditioned spaces become maximum within a certain period of time.
The second calculation unit that calculates the total heat load prediction value by adding the plurality of heat load prediction values for each time when the timing at which the heat load prediction values of the two or more air-conditioned spaces are maximized is deviated. When,
Based on the maximum value of the total thermal load prediction value, it possesses the capacity determination unit for determining a total capacity of at least one outdoor unit is connected to a plurality of the indoor units, and
The two or more air-conditioned spaces include a first air-conditioned space and a second air-conditioned space located in a direction in which the timing at which the predicted heat load value becomes maximum in the building is deviated.
The air-conditioning system includes a plurality of first indoor units installed in the first air-conditioned space and a plurality of second indoor units installed in the second air-conditioned space, and at least one of the above. The outdoor unit is composed of multiple outdoor units,
A part of the plurality of first indoor units is connected to one of the plurality of outdoor units, and a part of the plurality of second indoor units is connected to the one of the plurality of outdoor units. Connected to the outdoor unit,
The rest of the plurality of first indoor units are connected to other outdoor units of the plurality of outdoor units, and the rest of the plurality of second indoor units are connected to the other outdoor units. An air conditioner system selection device characterized by being connected to. The first air-conditioned space is an east-side air-conditioned space located on the east side of the building .
The second of the conditioned space, said a western be air-conditioned space located on the west side of the building, the air conditioning system selection apparatus according to claim 1. The capacity determining unit determines the total capacity of the plurality of indoor units based on the maximum value of the predicted heat load values of the two or more air-conditioned spaces, and is based on the maximum value of the predicted total heat load value. The air conditioning system selection device according to claim 1 or 2 , wherein the total capacity of at least one outdoor unit connected to the plurality of indoor units is determined. The determination unit determines whether or not there is a deviation in the time when the predicted heat load values of the two or more air-conditioned spaces become maximum in one day.
The second calculation unit is a total heat load prediction value obtained by adding the plurality of heat load prediction values for each time when there is a deviation in the time when the heat load prediction values of the two or more air-conditioned spaces become maximum. The air conditioning system selection device according to any one of claims 1 to 3, wherein the air conditioning system is calculated. A method of selecting an air conditioner system, which is executed by a computer and selects the capacity of an air conditioner system having a plurality of indoor units and at least one outdoor unit.
Multiple heat load predictions corresponding to each of the two or more air-conditioned spaces based on the heat load condition information indicating the heat load conditions of the two or more air-conditioned spaces in the building where at least one indoor unit is installed. Steps to calculate the value for each time and
A step of determining whether or not there is a deviation in the timing at which the predicted heat load values of the two or more air-conditioned spaces become maximum within a certain period of time, and
When there is a difference in the timing at which the predicted heat load values of the two or more air-conditioned spaces are maximized, the step of calculating the total heat load predicted value by adding up the plurality of heat load predicted values for each time, and the step of calculating the total heat load predicted value.
Based on the maximum value of the total thermal load prediction value, possess determining a total capacity of at least one outdoor unit is connected to a plurality of the indoor units, and
The two or more air-conditioned spaces include a first air-conditioned space and a second air-conditioned space located in a direction in which the timing at which the predicted heat load value becomes maximum in the building is deviated.
The air-conditioning system includes a plurality of first indoor units installed in the first air-conditioned space and a plurality of second indoor units installed in the second air-conditioned space, and at least one of the above. The outdoor unit is composed of multiple outdoor units,
A part of the plurality of first indoor units is connected to one of the plurality of outdoor units, and a part of the plurality of second indoor units is connected to the one of the plurality of outdoor units. Connected to the outdoor unit,
The rest of the plurality of first indoor units are connected to other outdoor units of the plurality of outdoor units, and the rest of the plurality of second indoor units are connected to the other outdoor units. An air conditioning system selection method characterized by being connected to. A program recorded on a computer-readable recording medium that causes a computer to execute an air-conditioning system selection method for selecting the capacity of an air-conditioning system having a plurality of indoor units and at least one outdoor unit.
Multiple heat load predictions corresponding to each of the two or more air-conditioned spaces based on the heat load condition information indicating the heat load conditions of the two or more air-conditioned spaces in the building where at least one indoor unit is installed. Steps to calculate the value for each time and
A step of determining whether or not there is a deviation in the timing at which the predicted heat load values of the two or more air-conditioned spaces become maximum within a certain period of time, and
When there is a difference in the timing at which the predicted heat load values of the two or more air-conditioned spaces are maximized, the step of calculating the total heat load predicted value by adding up the plurality of heat load predicted values for each time, and the step of calculating the total heat load predicted value.
Based on the maximum value of the total thermal load prediction value, possess determining a total capacity of at least one outdoor unit is connected to a plurality of the indoor units, and
The two or more air-conditioned spaces include a first air-conditioned space and a second air-conditioned space located in a direction in which the timing at which the predicted heat load value becomes maximum in the building is deviated.
The air-conditioning system includes a plurality of first indoor units installed in the first air-conditioned space and a plurality of second indoor units installed in the second air-conditioned space, and at least one of the above. The outdoor unit is composed of multiple outdoor units,
A part of the plurality of first indoor units is connected to one of the plurality of outdoor units, and a part of the plurality of second indoor units is connected to the one of the plurality of outdoor units. Connected to the outdoor unit,
The rest of the plurality of first indoor units are connected to other outdoor units of the plurality of outdoor units, and the rest of the plurality of second indoor units are connected to the other outdoor units. An air conditioning system selection program characterized by being connected to. A computer-readable recording medium containing the air conditioning system selection program according to claim 6. An air conditioning system having a plurality of indoor units and at least one outdoor unit, and selected by the air conditioning system selection device according to any one of claims 1 to 4.

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