JPH01200126A - Air-conditioning system for large building - Google Patents

Abstract

PURPOSE:To cope with a zone having a small load and contrive energy saving, by a method wherein the treatment of a thermal load in a perimeter zone is provided with a relevancy with the treatment of the thermal load of an interior zone, in an air-conditioning system suitable for a large intelligent building. CONSTITUTION:In this air-conditioning system, a perimeter series D and an interior series E are connected to a double fan unit F and the dampers of respective variable flow rate regulators VAV can be controlled by a thermostat in a room. In summer, cold air is sent from a fan for a perimeter series D into a perimeter zone A while cold air is sent from a fan for an interior series E into a peri-interior zone B and an interior zone C also. In a season from an intermediate season to winter, warm-air is sent from the fan for the perimeter series D into the perimeter zone A while cold air is sent from the fan for the interior series E into the peri-interior zone B and the interior zone C. Upon the rise-up of air-conditioning (early morning) in winter, warm-air is sent into respective zones.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioning system suitable for large intelligent buildings.

(Conventional technology) Conventionally, in air conditioning systems for large buildings, two systems of air conditioners, one for the perimeter zone and the other for the interior zone, are installed separately, and are operated for each of the perimeter zone and interior zone. In addition, there are many cases where a water type air conditioning system is used, and water piping is installed inside the living room.

[Problem that the invention seeks to solve]

However, in the conventional system, two systems of air conditioners are operated for each zone, so there is a problem in that the two systems must be managed.

Especially in intelligent buildings, when considering the installed load of OA equipment, the cooling load increases, so as a countermeasure for small loads, ■ Match the standard air conditioning function to small loads and install air conditioners in areas with high loads.

■Standard equipment Adjust the air conditioning function to high loads, and install indoor air circulation equipment in areas with low loads.

However, there is a problem in that power, filters, etc. need to be managed.

Furthermore, it is an important issue for the safety of OA equipment that no water pipes other than legally required equipment be installed in the living room where OA equipment is installed.

The present invention solves the above problems and problems,
The purpose of the present invention is to provide an all-air type air conditioning system for a large building that can handle small load zones and reduce management costs by relating the heat load processing of the perimeter zone and interior zone.

[Means for solving problems]

For this purpose, in the air conditioning system for large buildings of the present invention, the floor is divided into a perimeter zone, an interior zone, and a peri-interior zone between these zones, and air is blown from a double fan unit to the perimeter zone from a perimeter system blower. The zone and interior zone are characterized in that air is blown from an interior system blower.

[Effect]

In the present invention, for example, as shown in FIGS. 8 and 2, cold air is blown to the perimeter zone A from a perimeter blower in summer, and cold air is also blown from the interior system E to the perimeter zone B and interior zone C. to blow air. From the middle season to the winter season, warm air is blown into the perimeter zone A from a perimeter blower, and cold air is blown from the interior system E into the border interior zone B and interior zone C. Also, at the start of the winter season (early morning), warm air is blown to each zone. During winter use, hot air is blown to the perimeter zone A, and cold air is blown to the perimeter zone B1 and interior zone C to cope with the heat generated by humans, various OAQ devices, etc.

〔Example〕

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

1 to 3 schematically show the ventilation system of the air conditioning system for large buildings according to the present invention.

FIG. 1 shows a floor plan of a building.

In the present invention, the floor is divided into a perimeter zone A near windows, a perimeter zone B such as executive rooms and reception rooms, and an interior zone C such as general offices, and air is blown into the perimeter zone A from a perimeter blower. Air is blown into the peri-interior zone B and the interior zone C from an interior system E blower. In addition, a variable air volume regulator VAV is installed at the appropriate location of each outlet.

FIG. 2 shows a cross section of the building, in which the perimeter system and the interior system E are connected to a double fan unit F, and each variable air volume regulator VA can have its damper adjusted by an indoor thermostat.

FIG. 3 shows the air flow of the double fan unit F, and the perimeter air conditioner unit 1 includes filters la,
Cold water coil 1b, hot water coil lc.

The interior air conditioner unit 2 consists of a fan 1d, a filter 2a, a cold water coil 2bs, and a hot water coil 2c.
, and a fan 2d.

The required minimum outside air undergoes heat exchange with the indoor air taken in by the ventilation fan 3 in the total heat exchanger 4, passes through the damper 5, and is taken into the interior air conditioner unit 2. Furthermore, the outside air during outside air cooling is configured to pass through the damper 6 and be taken into the interior air conditioner unit 2. Each of the fans 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. FIG. 3 is a right side view of the figure.

At the bottom of the double fan unit F, the perimeter air conditioner unit 1 has a filter la, a cold water coil 1b, a hot water coil IC, and a fan 1d, and an inspection door 1.
e and 1r are provided, and air is blown into a perimeter system from the air supply port 1g.

The upper stage of the perimeter air conditioner unit 1 includes a filter 2a of the interior air conditioner unit 2, a cold water coil 2b,
The hot water coil 2c and fan 2d are installed and further inspected a.
2e, a steam humidifier 2f is installed, and air is supplied through the air supply port 2g (
(Fig. 6) to the interior system. Furthermore, a return air fan 3 and a total heat exchanger 4 are provided in the upper stage, and an outside air side damper 5a and an exhaust side damper 5b are provided below the total heat exchanger 4. Further, as shown in FIG. 6, a power circuit 6a and a control circuit 6b are provided, and as shown in FIG. 7, a perimeter return damper 7a, an outside air bypass damper 7b, an exhaust bypass damper 7 C is D'H.

Next, the operation of the present invention will be explained with reference to FIG. As shown in (a), in the summer, cold air is blown into the perimeter meter zone A from a perimeter blower, and the interior system E
Cool air is also blown to the peri-interior zone B and interior zone C.

As shown in (b), from the middle season to the winter season, warm air is blown from a perimeter system fan to perimeter zone A, and warm air is blown from interior system E to interior zone B.
1 Blow cold air to interior zone C. Also, (c)
As shown in the figure, warm air is blown to each zone at the beginning of the winter (early morning).

When the room is used in winter, as shown in (d), warm air is blown into the perimeter zone A, and cold air is blown into the perimeter zone B1 and interior zone C to cope with the heat generated by humans, various types of OAaRm, etc.

FIG. 9 shows another embodiment of the invention.

In terms of architectural planning, private rooms such as executive offices are often laid out in peri-interior zone B near windows, but these rooms have extremely low internal heat generation compared to other offices, and this tendency is due to the fact that many office automation equipment are used in these rooms. This is especially noticeable in intelligent buildings. In this case, if the room is cooled while satisfying the minimum ventilation (■), the room will be cooled to an appropriate level and a comfortable environment cannot be maintained. For example, in the three-zone air conditioning system shown in Figure 9 (a), the air volume of the perimeter is determined by the winter heating load;
In the summer, there is plenty of airflow. Therefore, as shown in Figure 9 (b), the perimeter system and the interior system are connected by dual VAV, and the temperature difference between the outlet of the perimeter system is set small (for example, 7 degrees Celsius), and this low-load air The system mixes and blows air from the interior system (with a temperature difference of 11 degrees Celsius) to maintain a comfortable environment.

〔Effect of the invention〕

As described above, according to the present invention, one control unit manages two systems and, for example, only one air conditioner is required for an air conditioning area of approximately 1,000 m. An all-air system with less management is possible.

In addition, the machine room is 25nm compared to the standard floor area of approximately 1000%.
Furthermore, since the standard floor rental ratio (including the front room) is 75 to 79%, it is possible to reduce the machine room area and increase the effective use of the building.

In addition, a total heat exchanger is installed only in the interior zone part, making it possible to have an outside air cooling function.
Energy saving can be promoted.

[Brief explanation of the drawing]

1 to 3 are diagrams showing one embodiment of the ventilation system of the air conditioning system for large buildings according to the present invention, in which FIG. 1 is a plan view of the floor, FIG. 2 is a sectional view of the building, and FIG. The figure shows the flow of air, Figures 4 to 7 show details of the double fan unit 7) F, Figure 4 is a front view, Figure 5 is a plan view, and Figure 6 is the figure 4. 7 is a right side view of FIG. 4, FIG. 8 is a diagram for explaining the present invention in detail, and FIG. 9 is a diagram 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 volume controller, F... Double fan unit. Applicant: Shimizu Corporation Representative Patent Attorney Ryukichi Abe (4 others) Figure 2 Figure 3 Figure 4 Figure 5 Figure 3 (A) - Figure 9

Claims (2)

[Claims] (1) The floor is divided into a perimeter zone, an interior zone, and a peri-interior zone between these zones, and a double fan unit blows air into the perimeter zone from a perimeter system blower. An air conditioning system for large buildings that blows air from the air. (2) The air conditioning system for a large building according to claim 1, characterized in that the perimeter system and the interior system are connected by a variable air volume controller.