JPH0668394B2 - Air conditioning system for large buildings - Google Patents

Description

The present invention relates to an air conditioning system suitable for a large intelligent building.

[Conventional technology]

Conventionally, in an air conditioning system of a large building, two systems of air conditioners, one for a perimeter zone and one for an interior zone, are separately installed and operated in each of the perimeter zone and the interior zone. In addition, there are many cases in which the water system is also used as the air conditioning system, and water piping is installed in the living room.

[Problems to be solved by the invention]

However, the conventional system has a problem that two systems of air conditioners are operated for each zone, and therefore management of two systems is required.

Especially in intelligent buildings, considering the installation load of OA equipment, the cooling load will increase. Therefore, as a measure against a small load, the standard equipment air conditioning function is adjusted to a small load, and a cooling machine is installed in the high load part.

Standard equipment Air conditioning system is installed in the small load part to match the air conditioning function with many loads.

However, there is a problem that it is necessary to manage power, filters and the like.

In addition, it is an important issue for the safety of OA equipment not to install water pipes other than legally required equipment in the living room where OA equipment is installed.

The present invention is to solve the above problems and problems,
It is an object of the present invention to provide an all-air type large-scale building air-conditioning system capable of coping with a zone having a small load and reducing the management cost by making it relevant to the heat load processing of the perimeter zone and the interior zone.

[Means for solving problems]

Therefore, in the air conditioning system for a large building of the present invention, the floor is divided into a perimeter zone, an interior zone and a peri-interior zone between these zones,
The double fan unit blows air from the blower of the perimeter system to the perimeter zone, and blows air from the blower of the interior system to the periinterior zone and the interior zone.

[Action]

In the present invention, for example, as shown in FIGS. 8 and 2, in the summer, cool air is blown from the blower of the perimeter system D to the perimeter zone A, and cold air is blown from the interior system E to the peri interior zone B and the interior zone C. Blow. From the mid-term to the winter, warm air is blown from the blower of the perimeter system D to the perimeter zone A, and cold air is blown from the interior system E to the peri interior zone B and the interior zone C. At the beginning of winter (early morning), warm air is blown to each zone. When the room is used in the winter season, warm air is blown to the perimeter zone A, and cold air is blown to the peri-interior zone B and the interior zone C so as to cope with heat generation from humans and various OA devices.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 3 show an outline of a ventilation system of an air conditioning system for a large building of the present invention.

FIG. 1 shows a plan view of the floor of the building. In the present invention, the floor is divided into a perimeter zone A near the window, a peri-interior zone B such as an officer's room or a reception room, and an interior zone C such as a general office room. The interior zone B and the interior zone C are blown by the blower of the interior system E. In addition, a variable air volume controller VAV is installed at an appropriate position of each air outlet.

FIG. 2 shows a cross section of the building. The perimeter system D and the interior system E are connected to the double fan unit F, and each variable air volume controller VAV can adjust its damper by a thermostat in the room.

FIG. 3 shows the air flow of the double fan unit F. The air conditioner unit 1 for the perimeter has a filter 1a,
The interior air conditioner unit 2 includes a cold water coil 1b, a hot water coil 1c, and a fan 1d.
a, a cold water coil 2b, a hot water coil 2c, and a fan 2d. The minimum required outside air is heat-exchanged with the indoor air taken in by the return air fan 3 in the total heat exchanger 4, passes through the damper 5, and is taken into the interior air conditioner unit 2. The outside air during cooling of the outside air passes through the damper 6 and is sucked into the interior air conditioner unit 2. Each fan has a variable air volume function.

4 to 7 show details of the double fan unit F. FIG. 4 is a front view, FIG. 5 is a plan view, FIG. 6 is a left side view of FIG. 4, and FIG. It is a right view of a figure.

The air conditioner unit 1 for the perimeter has a filter 1a, a cold water coil 1b, a hot water coil 1c, and a fan 1d installed at the bottom of the double fan unit F.
e and 1f are provided, and the air is blown to the perimeter system D from the air supply port 1g. The filter 2 of the interior air conditioner unit 2 is provided on the upper stage of the perimeter air conditioner unit 1.
a, a cold water coil 2b, a hot water coil 2c, a fan 2d are installed, and an inspection door 2e and a steam humidifier 2f are provided therein, and air is supplied from the air supply port 2g (Fig. 6) to the interior system E.
Be blown to. Further, a return air fan 3 and a total heat exchanger 4 are provided on the upper stage thereof, and an outside air side damper 5a and an exhaust side damper 5b are arranged below the total heat exchanger 4. Further, as shown in FIG. 6, a power circuit 6a and a control circuit 6b are provided, and further, as shown in FIG. 7, with respect to return air from the room, a perimeter side return damper 7a, an outside air bypass damper 7b, an exhaust bypass. The damper 7c is installed.

Next, the operation of the present invention will be described with reference to FIG.
As shown in (a), in the summer, cool air is blown from the blower of the perimeter system D to the perimeter zone A, and cold air is blown from the interior system E to the peri interior zone B and the interior zone C as well.

As shown in (b), warm air is blown from the blower of the perimeter system D to the perimeter zone A and cold air is blown from the interior system E to the peri-interior zone B and the interior zone C from the middle period to the winter period. Also,
As shown in (c), warm air is blown to each zone at the beginning of winter (early morning). When using the winter room, as shown in (d), warm air is blown to the perimeter zone A and humans and various types of O to the peri interior zone B and interior zone C.
A cool air is blown to correspond to the heat generated from the A equipment.

FIG. 9 shows another embodiment of the present invention. In the construction plan, private rooms such as executive rooms are often laid out in the peri-interior zone B near the windows, but these rooms generate extremely less internal heat than other offices. This tendency is O
This is especially noticeable in intelligent buildings with many A devices.
In this case, if cooling is performed while satisfying the minimum ventilation amount in the private room, it will be in an overcooled state and a comfortable environment cannot be maintained. For example, in the three-zone air-conditioning system shown in FIG. 9A, since the air volume of the perimeter is determined by the heating load in winter, there is a margin in air volume in summer. Therefore, conversely, as shown in FIG. 9B, the perimeter system and the interior system are connected by a dual VAV, and the blowing temperature difference of the perimeter system is set to be small (for example, 7 degrees C), and this low load The air and the air of the interior system (temperature difference of 11 degrees C) are mixed and blown to maintain a comfortable environment.

〔The invention's effect〕

As described above, according to the present invention, one control unit manages two systems, and one air conditioner is provided with an air conditioning area of about 1000 m ² , for example. Therefore, a large intelligent building air conditioning system of OA equipment heat load distribution type It is possible to use the all-air system with less management.

In addition, the standard floor area is approximately 1000m ² and the machine room is 25m ²
And the standard floor rentable ratio (including front room)
Is 75 to 79%, the machine room area can be reduced, and the effective use of the building can be increased.

Furthermore, since the total heat exchanger is attached only to the air conditioner part for the interior zone, it is also possible to cool the outside air,
Energy saving can be promoted.

[Brief description of drawings]

1 to 3 are views showing an embodiment of a ventilation system of an air conditioning system for a large building according to the present invention. FIG. 1 is a plan view of a floor, FIG. 2 is a sectional view of a building, and FIG. Shows a flow of air, FIGS. 4 to 7 show details of the double fan unit F, FIG. 4 is a front view, FIG. 5 is a plan view, and FIG. 6 is a left side surface of FIG. FIG. 7 is a right side view of FIG. 4, FIG. 8 is a view for explaining the operation of the present invention, and FIG. 9 is a view showing another embodiment of the present invention. A: Perimeter zone, B: Peri interior zone, C: Interior zone, D: Perimeter system,
E: Interior system, VAV: Variable air flow controller, F
...... Double fan unit.

Claims (2)

[Claims] 1. A floor is divided into a perimeter zone, an interior zone and a periinter zone between these zones, and air is blown from a double fan unit to the perimeter zone from a perimeter system blower. An air conditioning system for large buildings, which is characterized in that it blows air from a blower. 2. The air conditioning system for a large building according to claim 1, wherein the perimeter system and the interior system are connected by a variable air flow controller.