JPH08159537A - Air conditioner system - Google Patents

Abstract

PURPOSE: To reduce cooling heat to be supplied by cooling the wall of a building in a time zone in which the atmospheric temperature is lower than a set temperature in the case of the atmospheric temperature varying cycle. CONSTITUTION: The sunshine heat is absorbed to the outer wall 14 of a building 12 as the atmospheric temperature rises to become the heat load to the building 12. In order to remove the load, a controller 26 arbitrarily predicts outer wall temperature information to be output from an outer wall surface temperature sensor 54 and the heat absorbing temperature of the outer wall 14 of the building 12 based on the information, and arbitrarily controls the temperature of the air conditioning temperature so that the absorbing temperature becomes zero. That is, the supply amount of the cooling water to be supplied to a heat exchanger 32 is arbitrarily regulated by switching a valve 38 so that the absorbing temperature of the wall 14 becomes zero. Thus, since the heat of the atmosphere is not stored in the outer wall 14 of the building, the space in the building can be cooled in the state that the heat load of the entire building is small. Accordingly, the supply unit having small capacity can cope with it. When the atmospheric temperature is lowered, the supply of cooling water to the exchanger 32 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system,
Particularly, the present invention relates to an air conditioning system for air conditioning a building formed by a concrete outer wall or a concrete inner wall having a large heat capacity such as a nuclear power plant.

[0002]

2. Description of the Related Art Conventionally, an air conditioning system for cooling and air-conditioning a building formed by a concrete outer wall or a concrete inner wall having a large heat capacity, such as a nuclear power plant, has a heat exchanger arranged in front of a supply fan. Air conditioning is performed by cooling the outside air drawn in by a heat exchanger and supplying it to the building. The temperature of the conditioned air supplied by the air conditioning system detects the temperature of the outlet of the supply fan or the temperature of the representative point in the building with a temperature sensor, and the amount of cooling water supplied to the heat exchanger according to the deviation from the set temperature. Is controlled.

[0003]

However, in order to perform cooling, for example, in a building such as a nuclear power plant, it is necessary to supply a large amount of air, and the heat capacity of the concrete outer wall and the concrete inner wall of the building is large. Since it is large, a large-capacity refrigerator is required at the time of cooling, and there is a problem that equipment cost increases.

[0004] Further, in the past, the removal of heat due to the heat generation of the equipment was prioritized, so there are cases where a large capacity refrigerator is not necessarily installed. It wasn't a good enough environment for workers to do. The present invention has been made in view of the above problems, and an object thereof is to provide an air conditioning system capable of air conditioning equipment having a large heat capacity with a small capacity refrigerator.

[0005]

In order to achieve the above-mentioned object, the present invention provides an air conditioning system for air conditioning a building space to a set temperature, and a supply unit for supplying temperature-conditioned air to the building space. The temperature sensor for detecting the outer wall temperature of the building and the set temperature of the building space are stored in advance, and the temperature difference between the set temperature and the outer wall temperature is calculated at any time based on the outer wall temperature information output from the temperature sensor. And a control unit that controls the temperature of the conditioned air supplied from the supply unit so that the temperature difference becomes zero.

In order to achieve the above object, in an air conditioning system for air conditioning a building space to a set temperature, a supply section for supplying temperature-controlled air conditioning air to the building space,
A first temperature sensor for detecting the outer wall temperature of the building, a second temperature sensor for detecting the outside air temperature near the building, outer wall temperature information output from the first temperature sensor, and output from the second temperature sensor A control unit that predicts the heat absorption temperature of the building outdoor wall based on the outside air temperature information, and controls the temperature of the conditioned air supplied from the supply unit so that the heat absorption temperature becomes zero. Characterize.

In order to achieve the above object, in an air conditioning system that air-conditions a building space to a set temperature, a supply unit that supplies temperature-conditioned air to the building space,
A first temperature sensor for detecting the internal temperature of the building, a second temperature sensor for detecting the wall temperature of the building, and a preset temperature of the interior space of the building are stored in advance and output from the first temperature sensor. And a control unit that controls the temperature of the conditioned air supplied from the supply unit so that the wall surface temperature information output from the second temperature sensor reaches the stored set temperature. And

[0008]

INDUSTRIAL APPLICABILITY The present invention is effective, for example, in a building formed by an outer wall or an inner wall having a large heat capacity such as a nuclear power plant so that the outer wall or the inner wall is used as a heat storage body so that the interior of the building can be air-conditioned by a small capacity supply unit. It is an air-conditioning system for use in
The case of cooling air conditioning will be described below.

That is, during a time period when the outside air temperature is higher than the set temperature inside the building (for example, during the daytime), the building exterior wall absorbs heat. In the case of a building wall with a large heat capacity, once the building exterior wall absorbs the heat and the entire building wall heats up the heat, the heat load on the entire building remarkably increases and the building space has a large capacity to cool. Requires a supply section. Also,
The heat stored in the wall surface of the entire building during the time when the outside air temperature is higher than the set temperature is naturally cooled during the time period when the outside air temperature is lower than the set temperature (for example, at night). However, in the case of a building wall with a large heat capacity, natural cooling alone does not sufficiently cool the building wall, and the building wall still retains heat. Therefore,
When the outside air temperature becomes higher than the set temperature again, the heat load on the entire building becomes large, and a large capacity supply unit is required to cool the building.

Therefore, according to the first aspect of the present invention, the control section constantly calculates the temperature difference between the outer wall temperature information of the building output from the temperature sensor and the set temperature stored in the control section. The temperature of the conditioned air supplied from the conditioned air supply unit is controlled at any time so that the temperature difference becomes zero. Further, according to the invention described in claim 2, the control unit is based on the outside wall temperature information of the building output from the first temperature sensor and the outside air temperature information near the building output from the second temperature sensor. The heat absorption temperature of the building outdoor wall is predicted at any time, and the temperature of the conditioned air supplied from the air conditioning air supply unit is controlled at any time so that the heat absorption temperature becomes zero. As a result, a large amount of the heat of the outside air is not stored in the outdoor wall of the building, so that the indoor space can be cooled while the heat load of the entire building is small. Therefore, it can be covered by the small capacity supply department.

According to the invention of claim 4, the first
The internal temperature information of the building output from the temperature sensor and the wall temperature information of the building output from the second temperature sensor are
The temperature of the conditioned air supplied from the conditioned air supply unit is controlled at any time so as to reach the set temperature stored in the control unit. As a result, it is possible to completely remove the warm heat stored in the building wall and instead store the cold heat, so when the outside air temperature becomes higher than the set temperature, the building wall will It works in the direction of cooling, and therefore can be covered by a small capacity supply unit.

[0012]

1 is a block diagram showing an embodiment of an air conditioning system according to the present invention. As shown in the figure, the building 12 to which the air conditioning system 10 is applied has an outer wall 14 formed in a rectangular parallelepiped shape and a space inside the outer wall 14 in four rooms A, B, C,
It is composed of inner walls 16, 18, and 20 which are divided into D.

On the other hand, the air conditioning system 10 mainly comprises a supply unit 22 for supplying conditioned air, an exhaust unit 24 for exhausting the conditioned air, and a control unit 26 for adjusting the temperature of the conditioned air. The supply unit 22 includes an intake port 28, a supply filter 30, a heat exchanger 32, a supply fan 34, and a supply duct 36 as main constituent members.

The intake port 28 is an intake port for the air outside the building 12, and the outside air taken in here is passed through the supply filter 30 to be purified and then cooled by the heat exchanger 32. To be done. The conditioned air cooled by the heat exchanger 32 is blown by the supply fan and is supplied to the rooms A, B, C, D in the building 12 through the supply duct 36.

On the other hand, the exhaust portion 24 is connected to the exhaust duct 4
0, the exhaust filter 42, the exhaust fan 44, and the stack 46 are main components. The conditioned air supplied to each of the rooms A, B, C, D in the building 12 is sucked through the suction port of the exhaust duct 40, and the exhaust filter 42
After being purified by, the air is blown by the exhaust fan 44 and is exhausted from the stack 46 to the outside of the building 12.

The temperature of the conditioned air supplied and discharged as described above is adjusted by changing the supply amount of the cooling water supplied to the heat exchanger 36, and the change of the supply amount of the cooling water is controlled by the valve. It is performed by opening and closing 38. And
The opening and closing of the valve 38 is controlled by the control unit 26. The control unit 26 is provided at the intake port 28 and detects the temperature of the outside air, and the supply temperature sensor 50 that detects the temperature of the conditioned air is provided near the supply fan of the supply duct 36. , A room temperature sensor 52 provided in each of the rooms A, B, C, and D in the building 12 and detecting the temperature in the building 12 (for the room D, since the same room temperature sensor 52 is used for all rooms) (Only shown in the drawing, other rooms are omitted), and each of which is provided on the surface of the outer wall 14 of the building 12 and is output from the outer wall surface temperature sensor 54 that detects the surface temperature of the outer wall 14 of the building 12 at any time. The opening / closing of the valve 38 is controlled at any time based on the temperature information. Further, the control unit 26 stores a preset temperature in advance.

Further, near the wall surfaces of the outer wall 14 and the inner walls 16, 18 and 20 in the building 12, a wall proximity fan 56 for promoting cooling of each wall surface is provided. (Since the same wall near fan 56 is used for all wall surfaces, only the wall near fan 56 used for the outer wall 14 on the left side of the room D in the drawing is shown in the figure, and the other parts are omitted.) The wall-side fan 56 is drive-controlled by a fan control unit 58, and the fan control unit 58.
Is a wall surface temperature sensor 60 for detecting the temperature inside the respective wall surfaces of the outer wall 14 and the inner walls 16, 18, 20 (the same wall temperature sensor 60 is used for all wall surfaces, Only the wall temperature sensor 60 used for the outer wall 14 on the left side in the drawing is described, and the description of the other parts is omitted), and the near wall fan based on the temperature information output from the room temperature sensor 52 (room D) at any time. 56 is driven and controlled.

The operation of the embodiment of the air-conditioning system according to the present invention configured as described above will be described by way of an example of cooling and air-conditioning. Normally, the temperature of the outside air rises with sunrise and peaks in the early afternoon. Further, the amount of solar radiation increases as the temperature of the outside air increases, and the solar radiation is absorbed by the outer wall 14 of the building 12 and becomes a heat load on the building 12. From this, in order to remove the heat load of the building 12 due to the absorption of solar radiation, the control unit 26 uses the outside wall temperature information output from the outside wall surface temperature sensor 54 and the outside air temperature information output from the outside air temperature sensor 48. Based on this, the heat absorption temperature of the outer wall 14 of the building 12 is predicted at any time, and the temperature of the conditioned air supplied is controlled so that the heat absorption temperature becomes zero. That is, the supply amount of the cooling water supplied to the heat exchanger 32 is adjusted at any time by opening and closing the valve 38 so that the heat absorption temperature of the outer wall 14 becomes zero.

As a result, a large amount of the heat of the outside air is not stored on the outdoor wall of the building, so that the space inside the building can be cooled while the heat load on the entire building is small. Therefore, it can be covered by the small capacity supply department. Further, the temperature of the outside air gradually decreases after passing the peak, and becomes the lowest at dawn. When the temperature of the outside air drops, the heat exchanger 32
The supply temperature of the heat exchanger 32 also decreases, so when the controller 26 detects the decrease of the supply temperature, the supply of the cooling water to the heat exchanger 32 is stopped. However, heat is not dissipated on the outer wall 14 and the inner walls 16, 18, 20 (hereinafter referred to as wall portions) of the building 12 having a large heat capacity, and the sunrise is headed for without reducing the temperature. Therefore, during cooling during the day,
Since the cooling heat of the supplied conditioned air is absorbed by the wall portion, the efficiency becomes poor. Therefore, the control unit 26 controls the room temperature information output from the room temperature sensor 52 and the wall temperature sensor 6
Wall temperature information output from 0 is stored in the room (D)
The temperature of the conditioned air to be supplied is controlled as needed so that the temperature becomes the set temperature.

As a result, the warm heat stored in the building wall can be completely removed and the cold heat can be stored instead, so that when the outside air temperature again becomes higher than the set temperature, the building wall Works to cool the building, so
It can be covered by a small capacity supply department. Further, in order to further promote the storage heat of the cooling air of the conditioned air to the wall portion, the fan control unit 58 is based on the wall temperature information output by the wall temperature sensor 60 and the room temperature information output by the room temperature sensor 52. The fan 56 is driven to control the fan 56 so that the wall temperature and the room temperature reach the set temperatures stored in the control unit 26.

Thus, the air conditioning system 10 of this embodiment
According to this, the wall portion of the building 12 is cooled during the time period (nighttime) when the outside air temperature is lower than the set temperature with respect to the cycle of change of the outside air temperature, so that the wall portion is sufficiently cooled during this period.
Therefore, in the afternoon when the outside air temperature rises, the wall portion functions as a cooling side, so that the amount of cooling water supplied to the heat exchanger 32 can be reduced. Further, during a time period (daytime) when the outside air temperature is higher than the set temperature, the temperature rise of the building 12 due to the solar radiation absorption of the outer wall 14 of the building 12 is reduced, so that the temperature rise of the room temperature is suppressed and the heat exchanger 32 It is possible to supply a small amount of cooling water to be supplied to.
Therefore, even a refrigerator having a relatively small cooling capacity can air-condition equipment having a large heat capacity.

[0022]

As described above, according to the present invention,
Since the wall portion of the building is cooled during the time period when the outside air temperature is lower than the set temperature with respect to the change cycle of the outside air temperature, the wall portion is sufficiently cooled during this period. Therefore, the wall portion functions as a cooling side during the time period when the outside air temperature is higher than the set temperature, and a small amount of cooling heat can be supplied from the supply unit.
Also, when the outside air temperature is higher than the set temperature, the temperature rise of the building due to the solar heat absorption of the building exterior wall is reduced, so the temperature rise of the room temperature is suppressed and the cooling heat supplied from the supply unit can be small. be able to. Therefore, even a small capacity supply unit can air-condition equipment with a large heat capacity.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an air conditioning system according to the present invention.

[Explanation of symbols]

 10 ... Air conditioning system 12 ... Building 14 ... Building exterior wall 16, 18, 20 ... Building interior wall 22 ... Supply section 24 ... Exhaust section 26 ... Control section 32 ... Heat exchanger 48 ... Outside air temperature sensor 50 ... Supply temperature sensor 52 ... Room temperature sensor 54 ... Outer wall surface temperature sensor 56 ... Fan 58 ... Fan control unit 60 ... Wall temperature sensor

Claims (5)

[Claims] 1. An air conditioning system for air conditioning a building space to a set temperature, a supply unit for supplying temperature-controlled air-conditioned air to the building space, a temperature sensor for detecting an outer wall temperature of the building, and The set temperature is stored in advance, and based on the outer wall temperature information output from the temperature sensor, the temperature difference between the set temperature and the outer wall temperature is calculated at any time, and the temperature difference is zero and supplied from the supply unit. An air conditioning system comprising: a control unit that controls the temperature of the conditioned air as needed. 2. An air conditioning system for air conditioning a building space to a set temperature, a supply unit for supplying temperature-controlled air-conditioned air to the building space, a first temperature sensor for detecting an outer wall temperature of the building, and a building. A second temperature sensor for detecting the temperature of the outside air in the vicinity; outer wall temperature information output from the first temperature sensor;
A control unit that predicts the heat absorption temperature of the building outdoor wall based on the outside air temperature information output from the temperature sensor, and controls the temperature of the conditioned air supplied from the supply unit so that the heat absorption temperature becomes zero. An air conditioning system comprising: 3. A fan is provided in the vicinity of each wall surface of the building, and the fan is drive-controlled by a fan control unit so that an outer wall temperature of the building becomes a set temperature stored in the control unit. The air conditioning system according to claim 1 or 2. 4. An air-conditioning system for air-conditioning a building space to a set temperature, a supply unit for supplying temperature-controlled air-conditioned air to the building space, a first temperature sensor for detecting an internal temperature of the building, and a building. Second temperature sensor that detects the wall temperature of the wall, the preset temperature of the building space is stored in advance, and the internal temperature information output from the first temperature sensor and the wall temperature information output from the second temperature sensor And a control unit that controls the temperature of the conditioned air supplied from the supply unit so as to reach the stored set temperature. 5. A fan is provided in the vicinity of each wall surface of the building, and the fan is drive-controlled by a fan control unit so that the wall surface temperature of the building becomes a set temperature stored in the control unit. The air conditioning system according to claim 4.