JPS59217194A - Ventilating and air-conditioning device using fan built in thyristor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is applicable to a control panel with a large heat generation load, especially a JVAC (in a room where a recirculation pump thyristor panel inside a nuclear reactor is installed).
'By using the system's built-in fan,
This invention relates to a ventilation air conditioning system suitable for low cost, improved workability, and effective use of layout.

[Background of the invention]

Conventionally, ventilation and air conditioning systems for rooms where equipment with a large heat generation load such as control panels is installed have been implemented using a heat load removal method using only ventilation as shown in Figure 1, and a local cooler 2 system as shown in Figure 2.
There is a method in which a heat generating load is removed by providing a heat generating load.

When installing the local motor 222, the necessary equipment is a local cooler fan 13 (from the viewpoint of reliability, all spare units are required, and 2 units of 100 inches), a cooling coil 12, and two cooling coils. 1-16, air supply duct】7
, a return duct 18.

Furthermore, a ventilation air supply duct 14 and an exhaust duct 15 are provided in the thyristor panel chamber 9 in order to fill the necessary ventilation section. In this case, the amount of air supplied is often only the amount of air that satisfies the number of ventilations, and the heat generation load from the thyristor panel 10 is almost always removed by the el local cooler 22, so that the air temperature remains at the room temperature. Make it.

-i Additionally, with the operation of this system, it is necessary to perform %ffi of cold water to the cooling coil 12. Requires additional equipment such as cold water supply piping and a refrigerator.

The ventilation system shown in FIG. 1 supplies air to the thyristor panel chamber 9 in an amount necessary to remove the heat generation load from the thyristor panel 1O. In this method, the air flow in the ventilation system including the thyristor panel chamber 9 is significantly increased in order to bear the heat generation load removed by the local converter 222 in FIG. 5. The capacity of the supply air processing device 3 and heating/cooling coil 4 increases accordingly.

Applying the above two plans to the reactor internal recirculation pump thyristor panel chamber 9, which is the subject of the present invention, in the ventilation system shown in FIG. 1, the heat generation load from the thyristor panel 10 is extremely large. The amount of air supplied increases, the thyristor panel chamber 9 becomes less comfortable, and it is not favorable from a cost standpoint.

On the other hand, in the local turbine 222 installation method shown in Figure 2, the supply air temperature to the thyristor panel chamber 9 can be lower than that in the ventilation system shown in Figure 1, so the local turbine fan 13 becomes smaller; The entire cooling coil 12 must have enough cooling capacity to remove the heat generation load.

[Purpose of the invention]

The purpose of the present invention is to reduce the heat generation load! Ill n(Gl
In particular, for ventilation air conditioning in the room where the reactor internal recirculation pump thyristor panel is installed -1!1-tt-, the built-in fan of the thyristor panel is used for ventilation, and the built-in fan is equipped with an exhaust duct i.
By connecting and discharging the internal high heat generation load directly to the outside air, the installation of a local cooler can be avoided, and the purpose is to provide a complete ventilation system that takes advantage of low cost and effective use of installation space.

[General rules of invention]

Conventionally, PJJ was used in areas with locally large heat generation loads such as control panel rooms.
Although QM negative load removal was dealt with by installing an o-cal cooler, the heat generation load of the 61M sub-furnace in-furnace circulation type pump thyristor panel, which is the subject of this invention, is much higher than that of a conventional control panel. If the local tartar 2 is installed in a large area, it will cause an increase in cost.

On the other hand, the thyristor board built-in fan uses the heat generated VC inside the board,
J: Ruon; In order to suppress the northward tendency, the wind blows inside and plays the role of cooling, but the exhaust from the board is still released into the room. This exhaust gas is released directly into the outside air, ′! F
We propose a low-cost ventilation air conditioner that can be used in place of a full exhaust fan with a built-in YC fan.

[Embodiments of the invention]

Hereinafter, an embodiment of the present invention will be explained with reference to FIG.

The greasiness in the room where the reactor internal recirculation pump thyristor panel 10, which generates a large amount of heat generation load noise, is installed is as follows.

In order to prevent salt damage to the thyristor panel 0, the outside air guided into the supply air processing device 3 through the louver 1 is traced throughout the filter 2, and the salt concentration is turned around. 1. In winter, all 20 heating coils are connected to maintain the minimum room temperature. By using waste heat as the hot water supplied to the heating coil, it is possible to reduce the cost increase. From the supply air processing device 3, air is sent 1 into the thyristor panel chamber 9 by the supply air fan 5. The operation of the air supply fan 5 is controlled by the exhaust air volume by the thyristor panel built-in fan 11.
However, in consideration of tripping and malfunction of the air supply fan 5 and thyristor panel built-in fan 11, a bypass duct 21t shall be installed to keep the indoor pressure constant.

The supply air temperature is approximately 35 tZ' even at the highest temperature in summer, and is sufficiently suppressed within the temperature range of the thyristor panel chamber 9 (considered to be a maximum of 40 C). (Heat generation loads released into the room include heat radiation from the surface of the thyristor panel 10, lighting, heat input from the outside through the body, etc.) Air supplied into the thyristor panel chamber 9. The air is mixed with indoor air, sucked into the thyristor panel 10 from the bottom, removes heat inside the panel 7, and sent into the exhaust duct 19 by the built-in fan to be discharged to the outside air.

At the same time, during periodic inspection, consider the stopped state of the thyristor board 10,
It is assumed that the tamper 23 is opened and the air supply fan 5 is used to push out the air as much as necessary.

The effects of this embodiment will be compared and considered with the local tar 222 installation method, which is a good idea.

In the case of the local cooler 22 method, the air flow is from indoors to
Inside the thyristor panel → inside → return tact → local cooler →
Air supply duct → flows indoors. In other words, the heat is heated by passing through the thyristor disk, and the heat is cooled by passing through the local motor 222, repeating a loop of heating→cooling→heating→cooling.

On the other hand, in this embodiment, the air flows in the following order: outside air → supply air processing device → oil fan → supply air duct → indoor → inside the thyristor panel → exhaust duct → outside air, and the flow is as follows: supply air → heating → exhaust (discharge). It is a once, once method. Therefore, it can be regarded as a system in which the cooling process of the local cooler 22 system is omitted.

When comparing the inside of the equipment, it seems that there is not much difference between the supply air ducts 6 and 17, and the exhaust duct 19 and return duct 18, although it depends on the installation location of the local cooler 22.

The air supply fan 5 and the local cooler fan 13 determine how much air volume the thyristor panel built-in fan 11 can suppress, or in other words, how many degrees Celsius is the air temperature difference between the inlet and outlet of the thyristor panel. The air volume of the air supply fan 5 also changes, but the number of fans is 10 (1% x 2), and there is no difference in cost or self-distribution space. If the allowable temperature of the local cooler fan 13 can be increased or if the temperature difference between the inlet and outlet of the circulating air inside the panel can be increased, it will be possible to reduce the amount of the local cooler fan 13.
In this method, the temperature of the chilled water passing through the cooling coil 12, the temperature of the artificial air in the cooling coil unit 16 (the temperature of the artificial air in the thyristor panel room 9), the air volume of the local cooler fan 13 requires a certain air volume, and cannot be reduced. .

The supply air processing device 3 and the cooling coil unit 16 require more space in this embodiment since the filters 2 are all installed, although this also varies depending on the air volume.

But these two systems? Comparing the total, this embodiment can be said to be quite effective in terms of cost because it does not require any air cooling equipment, cooling coil 12, cold water supply of t, or increase in the amount of chiller.

Comparing with the ventilation system shown in Figure 1 of this embodiment, in the case of the first blade type, the air flow is from outside air to air supply processing equipment! (Cooling coil) → Air supply fan → Dark blue duct → Indoor → Inside the thyristor panel → Indoor → Exhaust duct → Exhaust fan → Outside air. In other words, the sequence is cooling → supply air → heating → exhaust, and the molecular helium heated by the thyristor disk 10 is cooled and sent in. This is considered to be a combination of the present embodiment and the local cooler 22 method, and since the amount of X of the air supply fan 5 is increased and the exhaust fan 8 is required, the number of fans is doubled to four, etc. The problem is that the cost is much higher than in the embodiment and that the installation space is secured.

From the above, it can be said that according to this embodiment, the HVAC system for the reactor internal recirculation pump thyristor panel chamber 9 is sufficiently effective in terms of cost, etc., compared to the conventional system.

〔Effect of the invention〕

According to the present invention, the following effects can be obtained.

(1) Complete ventilation adjustment to remove the heat generation load without using a local cooler in rooms where equipment such as control panels with a large heat generation load is installed, especially the reactor internal recirculation pump thyristor panel! We can provide t.

(2) The built-in fan of the thyristor panel can be used in place of the exhaust fan, reducing installation space.

(3) The reduction effects of (1) and (2) can improve workability.

[Brief explanation of the drawing]

Figure 1 is a system diagram of a heat load removal method using only the ventilation system of the reactor internal recirculation pump thyristor panel room ventilation system, Figure 2 is a system diagram of a local cooler method of the same ventilation system, and Figure 3 is a system diagram of the same ventilation system. A system diagram of this embodiment of the system is shown.

Claims (1)

[Claims] 1. In the Iristor panel room ventilation air conditioner, which uses an internal reactor recirculation type bong control device consisting of an outside air intake filter, heating/cooling coil, and supply air fan area, all the cooling fans built into the Thyristor panel are used to remove high-temperature air after the panel has been cooled. Ventilation air conditioning system for paper fan orifice inside thyristor panel, characterized by the ability to make the device more compact by discharging air to the outside.