JPH06229609A - Controlling method for temperature and heat environment in room - Google Patents

Abstract

PURPOSE:To provide a comfortable environment irrespective of a place in an air conditioning area by varying a measuring surface angle of a radiation temperature measuring instrument installed in a room to be controlled at a set period, and controlling a guide temperature and heat environment based on the measured radiation temperature value. CONSTITUTION:An air flow temperature measuring instrument 12 and an indoor temperature measuring instrument 13 are mounted in a room 1 to be controlled, and a radiation temperature measuring instrument 14 for measuring a radiation temperature is so mounted variably at a measuring surface angle to match an air conditioning control period as to cover all human activation range in the room 1 to be controlled. Operations of sections of a main air conditioner 18 are so controlled based on a plurality of PMV values to be input at each air conditioning control period by an air conditioning controller 27 that a mean PMV value in the room 1 to be controlled becomes '0'. A speed of a diffuser fan 6 in each diffuser 7 mounted in each zone of the room 1 to be controlled is controlled at similar period based on a plurality of pieces of radiation temperature measuring surface angle information, and an optimum temperature and heat environment is maintained as the entire room 1 to be controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling an indoor thermal environment, and more particularly to a method for controlling an indoor thermal environment for making a room comfortable.

[0002]

2. Description of the Related Art In a conventional general air-conditioning system, basically, two factors, temperature and humidity, are controlled.
However, the original purpose of air conditioning is not only to make the room the target temperature and humidity, but also to provide a comfortable environment for the residents. In recent years, there is an increasing demand for more comfort in air conditioning in offices and factories. Therefore, recently, an air conditioning method based on a new concept of thermal environment control has been implemented.

By the way, the thermal environment index PMV value proposed by Professor Wanger of the Technical University of Denmark and standardized as ISO-7730 in 1984 is the airflow temperature, the radiation temperature, the wind speed, which affects the thermal comfort of human beings. Substituting a total of 6 elements of humidity, thermal resistance of clothes, and metabolic rate of a resident, the human thermal sensation is expressed as a numerical value from -3 (cold) to +3 (hot). ISO recommends maintaining the PMV value in the range of −0.5 to +0.5 in order to obtain a comfortable feeling.

When controlling the indoor thermal environment on the basis of the PMV value, the four elements of the air flow temperature, the radiation temperature, the wind speed, and the room temperature among the six elements are often installed in the room. For the airflow state in the room, the method of calculating the representative wind speed value in the room may be used based on the air volume information. Since it is very difficult to measure the thermal resistance of clothing and the amount of metabolism of the resident, the approximate estimated value is fixedly set, and the thermal resistance of clothing is calculated based on the date and time when calculating the PMV value. I am typing. The normal PMV value is controlled to 0.

[0005]

However, the indoor thermal environment is not generally uniform. In particular, the state of the radiant temperature in the room differs depending on the positional relationship between the window through which the solar radiation enters and the heat-generating device installed in the room. That is, it is very difficult to install a radiation temperature measuring device in a position that can measure the radiation temperature that is representative of the room, and even at the same location, the radiation temperature measurement value that is measured according to the time of day, the weather, and the operating conditions of the equipment. Is not constant. This is an obstacle to providing a comfortable environment in the controlled room. For this reason, even if the control is performed based on the PMV value, when the control is performed at a certain position, the phenomenon that the other position is too hot or too cold occurs. Therefore, in the above-mentioned conventional PMV control method, in order to secure a wide comfortable area, a large number of radiation temperature measuring devices are arranged in the room,
On the contrary, there was a problem that a large amount of effort and investment of capital, such as keeping the radiant temperature in the room uniform, cannot be avoided.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for controlling an indoor thermal environment that can create a stable and comfortable indoor temperature environment with a simple equipment configuration.

[0007]

In order to achieve the above object, a method for controlling a thermal environment according to the present invention is an indoor thermal system for controlling an air conditioner so as to set an indoor thermal environment which gives a occupant a comfortable feeling. In the environment control method, the measurement surface angle of the radiation temperature measuring device installed in the controlled room is changed at a set cycle, and the indoor thermal environment is controlled based on the radiation temperature measurement value acquired by the measuring device. It was done.

[0008]

According to the above construction, it is possible to accurately measure the radiant temperature, which varies greatly depending on the time of day, the weather, and the operating condition of the equipment, so that the temperature inside the controlled room can be constantly maintained in an even environment. Can be set. Since the measurement location of the radiant temperature is changed in a set cycle with respect to the controlled room, it is possible to measure the radiant environment in a wide area with the minimum measuring equipment, and the amount of equipment required can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the thermal environment control method according to the embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an equipment configuration for realizing the thermal environment control method of the embodiment. As shown in this figure,
It is assumed that the controlled room 1, which is a target for controlling the thermal environment, is provided with a window 2 that allows intrusion of solar radiation and the like, and a heat generating device 3 such as a computer is installed therein.

An underfloor chamber 4 serving as a space for introducing conditioned air is formed in the underfloor portion of the controlled room 1, and a plurality of blowing fans 6 installed in the underfloor chamber 4 are formed on the floor surface 5. A unit 7 that blows the conditioned air from the floor surface 5 is installed integrally with. The blowing unit 7 is installed in each zone in which the controlled room 1 is divided into small sections. On the other hand, on the ceiling surface 8 of the controlled room 1, there is formed a ceiling return air port 10 that is opened so as to guide the conditioned air from the room side to the ceiling chamber 9, and a lighting fixture 11 is installed. . Then, in the controlled room 1, an airflow temperature measuring device 12 for measuring an indoor airflow temperature and a temperature measuring device 13 for measuring an indoor temperature are respectively installed. A radiation temperature measuring instrument 14 for measuring the radiation temperature is installed on the ceiling surface 8. The radiation temperature measuring device 14 is integrated with a driving mechanism that changes the angle of the measurement surface, and is adjusted according to the air conditioning control cycle (for example, every 1 minute) so as to cover the activity range of a person in the controlled room 1. The measurement surface angle is changed.

Further, an air conditioner equipped with a main air conditioner for mixing the air returned from the ceiling chamber 9 of the controlled room 1 and the intake outside air, controlling the temperature and air-conditioning and supplying to the underfloor chamber 4 side A room is provided. A return air duct 15 connecting the air-conditioning room and the ceiling chamber 9 is attached, and an air volume measuring device 16 for measuring the air volume of the conditioned air is installed in this. The air flow rate measuring device 16 is connected to a representative wind speed value calculation 18 of a control device provided outside the controlled room 1 by a cable 17. Air flow meter 16
The air volume information obtained in (1) is output to the representative wind speed value calculating device 18 via the cable 17, and the representative wind speed value calculating device 18 sequentially calculates the representative wind speed value in consideration of the preset characteristic value of the air conditioning system. It is calculated.

Separately from this, outside the controlled room 1, the controller is provided with a clothing heat resistance value / metabolic amount setting device 19. The clothing heat resistance value is automatically set to a value calculated from the date information, and the metabolic rate is set in advance according to the use of the controlled room 1.

The airflow temperature measuring device 12 and the humidity measuring device 1
3, the radiation temperature measuring device 14, the representative wind speed value computing device 18, and the clothing heat resistance value / metabolic amount setting device 19 are provided outside the controlled room 1 via cables 20, 21, 22, 23, 24, respectively. It is connected to the PMV computing device 25. Airflow temperature, humidity, radiation temperature and measurement full angle detected by the airflow temperature measuring device 12, the humidity measuring device 13, the radiation temperature measuring device 14, the representative wind speed value calculating device 18, and the clothing heat resistance value / metabolic amount setting device 19, The information on the representative wind speed value, the clothing heat resistance value, and the metabolic rate are obtained from the cables 20, 21, and 2, respectively.
It is output to the PMV arithmetic unit 25 via 2, 23, 24.

By the way, the PMV arithmetic unit 25 is connected to an air conditioning controller 27 via a cable 26. P
The MV calculating device 25 is based on each information input from the airflow temperature measuring device 12, the humidity measuring device 13, the radiation temperature measuring device 14, the representative wind speed value calculating device 18, and the clothing heat resistance value / metabolic amount setting device 19. Once at a fixed time (for example, 15 seconds), the PMV value according to the thermal environment index PMV value calculation formula standardized as ISO-7730 is calculated, and the PMV value and the radiation temperature measurement surface angle obtained as a result are calculated. Output to the air conditioning controller 27.

As shown in FIG. 2, the air-conditioning control device 27 controls the average PMV in the controlled room 1 on the basis of a plurality of input PMV values at every air-conditioning control cycle (for example, 1 second).
A signal for controlling the operation of each part of the main air conditioner 28 is output so that the value becomes zero. That is, the rotation speed of the blower fan 30 is controlled via the cable 29, the amount of water vapor in the humidifier 32 is controlled via the cable 31, the temperature of the heater 34 is controlled via the cable 33, and the temperature of the heater 34 is controlled via the cable 35. Cooler 36
Control the temperature of.

At the same time, the air-conditioning control device 27 blows out from each blowing unit 7 installed in each zone in the controlled room 1 at the same cycle based on a plurality of radiation temperature measuring surface angle information. Outputs a signal that controls the balance of conditioned air. That is, the cables 37, 38, 39, 40
The rotation speed of each blowing fan 6 is controlled via the. As a result, based on the radiation temperature change that differs for each radiation temperature measurement surface direction, the influence change due to the radiation temperature is suppressed at each location, and the controlled room 1 as a whole is adjusted to have an optimum thermal environment.

As a result of the above operation, the window 2 through which solar radiation enters
Or, the influence of the radiation temperature environment in the controlled room 1, which differs depending on the positional relationship with the heat-generating device 3 installed in the controlled room 1,
It is possible to control the indoor environment with minimum control. for that reason,
The indoor thermal environment of the controlled room 1 can be uniformly controlled regardless of the location, and a comfortable environment can be stably supplied to the occupants. Further, while maintaining a comfortable environment, it is possible to minimize the energy loss that has been conventionally caused by an inappropriate control point position.

The present invention is not limited to the above embodiment. That is, the case where a plurality of radiation sensors are installed is also considered depending on the size of the air conditioning target area. Further, a variable air volume damper may be used to adjust the balance of the air volume from the floor air outlet unit,
A mechanism for changing the opening end of the blowout port may be used. Further, the air conditioning system is not limited to the floor blowing system. It is also possible to use a fan-out system and a fan opening control in the same manner by using the ceiling blowing method.

[0020]

As described above, according to the present invention,
It is configured to change the measurement surface angle of the radiation temperature measuring instrument installed in the controlled room at a set cycle and control the indoor thermal environment based on the radiation temperature measurement value acquired by the measuring instrument. A stable and comfortable environment can be provided to residents regardless of the location in the area. It is possible to stably provide a comfortable indoor thermal environment, and it is possible to suppress wasteful energy consumption while maintaining a comfortable environment.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an equipment configuration for carrying out an indoor thermal environment control method according to the present invention.

FIG. 2 is a block diagram of a control method according to an embodiment.

[Explanation of symbols]

 1 Controlled room 2 Window 3 Heat generating device 4 Underfloor chamber 5 Floor 6 Fan 7 for blowing Air 8 Unit Ceiling 9 Ceiling chamber 10 Ceiling return port 11 Lighting fixture 12 Airflow temperature measuring instrument 13 Humidity measuring instrument 14 Radiation temperature measuring instrument 15 Return Air Duct 16 Airflow Measuring Device 18 Representative Value Wind Velocity Calculator 19 Clothes Heat Resistance / Metabolism Setting Device 25 PMV Calculator 27 Air Conditioning Controller 28 Main Air Conditioner 30 Blower Fan 32 Humidifier 34 Heater 36 Cooler

Claims (1)

[Claims] 1. A method for controlling an indoor thermal environment in which an air conditioner is controlled to set an indoor thermal environment that gives comfort to indoor occupants, wherein a measurement surface angle of a radiation temperature measuring device installed in a controlled room is set. A method for controlling an indoor thermal environment, which comprises changing the temperature in a cycle and controlling the indoor thermal environment based on a radiation temperature measurement value acquired by the measuring instrument.