KR100550131B1 - System and Method of pressure distribution and pressure regulation for heating and air-conditioning units, and a very high-rise building utilizing the same - Google Patents

Abstract

The present invention relates to a multi-stage pressure distribution and pressure reduction system of an air conditioning piping system that can stably and accurately control the head pressure that is a problem in an air conditioning piping system of a high-rise building, a pressure control method, and a high-rise building equipped with the system. At least one air-conditioning load 400 vertically zoned according to head pressure due to building height; A heat source supply system (100) for supplying heat fluid to each of the vertical zoned cooling and heating loads (400); The heat source includes a booster pump (PP2) for transferring the heat source of the heat source supply system (100) to each of the vertical zoned cooling and heating loads (400), and a pump control valve (PCV2) for stably maintaining a set head pressure. At least one booster pump system 300 provided between a supply system 100 and each of the vertical heating zones 410, 420, 430; Output side return line of each of the vertical zoned heating and cooling loads 410, 420, 430, which consists of a decompression and pressure holding device (PRSD) for maintaining the head pressure set by reducing the thermal fluid output from the air conditioning heating load 400 And at least one decompression control system 600 installed between the heat source supply system 100, as the head pressure acting in proportion to the height of the building is multi-stage dispersed and decompressed within the safe use head pressure range, The high head pressure of the air conditioning piping system of the high-rise building can be accurately and stably controlled, and it is possible to use the building space efficiently because there is no need of the intermediate facility layer for installing the heat source equipment in the high-rise building. It is an invention that has the effect of reducing weight, saving construction costs, and saving energy.

Skyscrapers, air conditioning water, booster pumps, air conditioning piping, pressure distribution, pressure control

Description

Multi-stage pressure distribution and pressure reduction system of air conditioning system, pressure control method and high-rise building equipped with the system {System and Method of pressure distribution and pressure regulation for heating and air-conditioning units, and a very high-rise building utilizing the same}

1 is a schematic diagram of an air conditioning piping system showing an embodiment according to the present invention;

2 is a conceptual diagram showing a system control system of the present invention;

Figure 3 is a block diagram showing the fluid circulation in the air conditioning piping system of the present invention.

4 is a view showing the fluid circulation in the air conditioning piping system of the present invention,

       Block diagram when a local heat source supply system is applied as a heat source supply means,

5 is a pressure reduction and pressure holding device provided in the pressure reduction control system according to the present invention

       Briefly showing the configuration.

<Explanation of symbols for the main parts of the drawings>

100: heat source supply system 200: machine room

210: system control unit 300: booster pump system

400: heating and cooling load 500: surge tank device

600: decompression control system PP1: primary circulation pump

PP2: Booster Pump RV: Pressure Evacuation Valve

V2: 2-way valve ST: Surge tank

ET: Expansion tank M: Flow meter

PCV1, PCV2: Pump Control Valve

PRSD: Pressure Reducing and Pressure Holding Device

PRSV: Pressure Reducing and Pressure Maintenance Valve

RSV1, RSV2: Pressure Escape and Pressure Maintenance Valve

The present invention relates to an air conditioning piping system installed in a high-rise building, in particular, a multi-stage pressure distribution and pressure reduction system of an air conditioning piping system capable of stably and accurately controlling the head pressure which is a problem in an air conditioning piping system of a high-rise building, and the pressure thereof. A control method and a high-rise building equipped with the system.

In recent years, due to the rapid development of building technology, there are a lot of high-rise buildings with more than 50 floors that are more than 200m high, and there are many high-rise buildings with more than 100 floors that are more than 400m worldwide.

In such high-rise buildings, the water pressure in the piping system of heat source equipment such as refrigerators, boilers, and heat exchangers is directly related. In general, in buildings around 20m around 70m, even if the heat source equipment is installed only in the basement floor, there is no great difficulty in supplying the heat fluid supplied from the heat source equipment to the upper floor of the building. The heat source equipment should be distributed and installed on the middle floor or the top floor of the building, and as the height of the building increases, the intermediate floor (equipment floor) for installing the heat source equipment will increase in proportion to the height.

In the vertically elevated high-rise building system, unlike the system applied in the general building, the system that meets the characteristics of the high-rise building must be considered. In high-rise buildings, it is necessary to maintain the high pressure acting on the arrangement of the air conditioning equipment according to the height in the appropriate pressure range.

As this phenomenon is gradually increasing in buildings, the necessity of the head pressure control of the air conditioning system is more important in the construction environment and functional aspects in the design of high-rise buildings.

A technique for providing an effective control method and system for air conditioning arrangement in such a high-rise building is disclosed in Patent No. 245587 filed by the same person.

The present invention is an improved multi-stage pressure distribution and decompression system that can be applied stably even in a high-rise building under high head pressure under severe conditions, a pressure control method, and a high-rise building equipped with the system. It is about.

An object of the present invention is to maintain a constant and stable all the internal pressure of the air conditioning system in the head pressure control system of the air conditioning system of the skyscraper.                         

According to the present invention, the pressure variation caused by hunting and residual offset of the valve generated during operation of the system, the water hammer action generated every time the pump is turned on and stopped, and the negative pressure caused by the cold water drop are derived. It is to control the pressure fluctuation.

The pressure diagram of the air conditioning system is drawn up and the safe working pressure of equipment and equipment, fluid flow and pressure fluctuations, control conditions, pump characteristics and logarithmic control for energy saving, and devices to be applied to system pressure control are as follows. It is solved by applying the same characteristic technology.

Overwater pressure and pressure control

1. Hydraulic problem of supply pipe and configuration of supply circulation pump system

One of the major causes of the problems in the water piping system of skyscrapers is due to excessive pressure. In nature, the head pressure is proportional to the height, so the excessive pressure load acting on the water piping system of the high-rise building not only causes serious problems in the safe operation and operation of the equipment, but also increases the cost in terms of economics of maintenance and maintenance. do. In the piping system, when the pressure is more than 10㎏ / ㎠, the pressure pipe (spps) is used in consideration of safety.In this case, a refrigerator, a boiler, a circulation pump, an air conditioner (AHU), and a fan coil unit (FCU) are used. Special equipment such as this will cause excessive expenses.

If the operation of any equipment or system does not require high pressure in particular, it is unreasonable to construct it beyond the maximum pressure at the outlet and it is desirable to limit the maximum pressure where possible.

In the present invention, the super high-rise building is divided into sections according to the height of each zone to form a system of air conditioning system to control the head pressure to the appropriate pressure, and the circulation of the thermal fluid is pressurized by the booster pump of the booster pump system composed of the multi-stage. In the event of shutdown, the check valve prevents the upstream pressure from acting downstream, thereby regulating the excess water pressure imposed on the system at each stage. At this time, it is advantageous to configure the proper pressure range of the hydraulic pressure control by vertical zoning in the range of about 7-25 kg / cm 2 in consideration of economics and stability.

2. Hydraulic Problems in Return Piping and Configuration of Pressure Reducing Control System

The hydraulic pressure applied to the supply pipe can be reliably ensured by the check function of the pump control valve and the booster pump.However, the control of the hydraulic pressure acting on the supply pipe on the return side requires high engineering and fluid dynamics. Knowledge and skills in mechanical mechanics, thermofluid engineering, and building equipment.

The piping on the return side flows downward, so the head pressure of the system is controlled by applying the decompression and pressure holding device, which is a pressure control device that reduces the water pressure in the system to an appropriate pressure. This device has the function to shut off the main device when the upstream pressure drops below the set pressure, and to prevent the backflow by blocking the main device when the downstream pressure rises above the set pressure. Ensure to remain stable at all times within this design range.

Multi-stage pressure distribution and pressure reduction system of the high-rise building air conditioning system of the present invention for achieving the above object includes at least one heating and heating load vertically zoned according to the head pressure by the building height; A heat source supply system for supplying a heat source to each of the vertical zoned heating and cooling loads; A booster pump for transferring the heat source of the heat source supply system to each of the vertical zoned cooling and heating loads, and a pump control valve for maintaining a set head pressure, is provided between the heat source supply system and each of the vertical zoned cooling and heating loads. At least one booster pump system; At least one decompression control device installed between the output side return line of each vertical zoned heating and cooling load and the heat source supply system, comprising a decompression and pressure holding device for maintaining the head pressure set by depressurizing the heat fluid output from the cooling and heating load. It consists of a system and is achieved by multiply distributing the head pressure acting in proportion to the height of the building within the safe working pressure range according to the design conditions.

1 to 5 are related to the air conditioning piping system of the present invention, Figure 1 is an embodiment of the present invention applicable to the case of zoning the heating and cooling load in the first step, second step, third step according to the building height 2 is a schematic diagram showing a system control system of the present invention showing only a third stage heating and cooling load, and FIG. 3 is a block diagram showing a fluid circulation in the air conditioning piping system of the present invention. Figure 4 is a block diagram showing the fluid circulation in the air conditioning piping system of the present invention when the local heat source supply system is applied as a heat source supply means, Figure 5 is a pressure reduction and pressure provided in the pressure reduction control system according to the present invention The figure shows a holding device.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The present invention can be carried out by zoning a plurality of heating and cooling loads according to the head pressure generated according to the height of the building, but in the following embodiment of the present invention, the heating and cooling loads are determined according to the head pressure according to the height of the building. The air-conditioning piping system of the building divided into 2nd and 3rd stages will be explained.

The height of each zoned stage can be arbitrarily adjusted according to the pipe material and the condition of the building.

Referring to Figure 1, the multi-stage pressure distribution and pressure reduction system of the present invention, the heating and cooling load 400 consisting of the first stage heating and cooling load 410, the second stage heating and cooling load 420, and the third stage heating and cooling load 430 ) Is provided with a booster pump system 300, and the pressure reduction control system 600 is connected to the heat source supply system 100 by the piping for the air conditioning water control system.

In the present invention, the air conditioning system may be a steel pipe, a copper pipe, a stainless steel pipe, or the like.

The air-conditioning load 400 is composed of an air conditioner (AHU), a fan coil unit (FCU), a convector (convector) for maintaining air conditioning in the building.

The heat source supply system 100 includes a plurality of heat source devices such as a refrigerator (R), a boiler (B), a cold and hot water machine (RB), a primary circulation pump (PP1) for circulating and driving a thermal fluid, and the primary circulation pump (PP1). ) And a pump control valve (PCV1) and a pressure escape valve (RSV1).

The heat source supply system 100 may be composed of conventional heat source equipment such as a refrigerator (R), a boiler (B), a cold and hot water machine (RB) installed in a building, but supplies heat fluid from outside the building, such as a cogeneration plant. Local heat source supply system is available.

Referring to FIG. 4, in the case of using a local heat source system as the heat source supply system, the machine room receives heat fluid and delivers it to the booster pump system, and the heat fluid returned through the cooling and heating load is piped back to the local heat source supply system. Can be configured.

The booster pump system 300 and the depressurization control system 600 are vertically zoned according to the head pressure of the building, and are configured in multiple stages to control pressure at each stage, and also to make the pressure control of the whole system stable. It is.

For example, when the pressure control range of the first stage booster pump system is maintained at a pressure of 7-25 kg / cm 2 in consideration of safety and economic efficiency, the height of one floor of a super high-rise building is usually 4.0 to 4.5 m, so that 20 floors The head pressure generated when the zone is composed is in the range of 8 to 10 kg / cm 2. Therefore, in the configuration of the booster pump system 300, the booster pump PP2 is installed in each zone to circulate and supply the fluid so that the head pressure is controlled within the safe operating pressure range.

The booster pump system 300 is composed of a booster pump PP2 and a pump control valve PCV2 connected in series with the booster pump PP2, and the pulsation phenomenon when the booster pump PP2 starts and stops ( to prevent surging, to close the valve immediately to prevent the back flow of the power supply, and to minimize the pressure fluctuations in the logarithmic control of the pump so that the control of the system can be stably optimized.

In addition, the booster pump system 300 further includes a pressure escape valve and a pressure maintaining valve RSV2 connected in parallel with the booster pump PP2 and the pump control valve PCV2 to provide two sides of a cooling / heating load 400. The pressure that changes when the valve V2 is opened and closed is kept constant regardless of the potential on the inlet side or the flow rate required by the system.

In addition, the lower end of each booster pump (PP2) of the booster pump system 300 may be further provided with a check valve (not shown). The check valve configured as described above prevents excessive pressure from being applied to the system by preventing the pressure of the upstream layer from acting downstream when the booster pump is stopped.

A surge tank device 500 is installed at the top of the return piping system to adjust the pressure fluctuations caused when the pressure control devices are opened or closed at different times by the pressure escape valve (RV) or the check valve. When the control valve closes suddenly, it prevents surge action, and when the supply water tank function and sudden pressure expansion occur, the pressure escape valve RV is opened to escape the pressure.

That is, in each stage, the fluid output from the booster pump system 300 is vertically zoned in multiple stages by setting the hydraulic pressure control range in consideration of characteristics, conditions, stability, etc. within the safety head pressure for use in the booster pump system of each zone. Pressurized water is transmitted, and when stopped, the mechanical check valve of the booster pump is closed as described above, so that the pressure on the upstream side does not act on the downstream side.

By using carbon steel pipes for pressure piping as the supply piping of the circulation supply piping line, the height of vertical zoning can be increased. In other words, the head pressure can be increased within the safe operating pressure range of the pipe line and the pump system, and the height of the vertical zoning can be greater than the head pressure of 7-25 kg / ㎠, which reduces the quantity and installation space of mechanical equipment such as booster pumps. I can do it. In addition, the head pressure in the heating and cooling load piping system of each zoning is to maintain the equipment safety working pressure (5 ~ 10kg / ㎠).

Next, since the return pipe flows downward, the decompression control system prevents negative pressure from falling water and controls high head pressure under reduced pressure.

The characteristic of the head pressure control device that reduces the head pressure in the system to the proper pressure is that the main valve is shut off when the pressure reducing function and the upstream pressure of the valve fall below the set pressure, and also when the downstream pressure rises above the set pressure. To prevent backflow.

That is, the pressure holding function must be performed so that the fluid pressure in the system is always kept stable within the design range. The configuration of the pressure reduction control system for satisfying such conditions is as follows.

The pressure reduction control system 600 is composed of a pressure reduction and a pressure holding device (PRSD). The pressure reducing and pressure holding device (PRSD) reduces the high pressure at the inlet side (upstream side) to the low pressure at the outlet side (downstream side) and maintains the set outlet pressure accurately regardless of the change in the inlet side pressure or flow rate. do. When the pressure on the outlet side rises above the set pressure, the valve closes. When the pressure on the inlet side falls below the set pressure, the valve closes.

The decompression control system configured as described above is vertically zoned in multiple stages in consideration of the pressure control range and characteristics, and the pressure reduction apparatus is configured in multiple stages of the first stage or more so that cavitation does not occur. The head pressure control range of the pressure reduction controller system is preferably 7 to 25 kg / cm 2 in the same manner as the booster pump system from the viewpoint of stability and economy.

The heat source supply system 100, the first stage booster pump system 310, and the first stage pressure reduction control system 610 may be installed on the basement floor of the building to configure the machine room 200, thereby reducing the installation space.

The machine room 200 is provided with an air pressurized or nitrogen pressurized diaphragm hermetic expansion tank (ET) in the return header, and is generated when the pump is started or stopped or due to hunting and residual offset of the pressure control valve. By controlling to absorb and regulate the pressure fluctuations, the set pressure of the system can be kept stable at all times.

In the machine room 200, reference numeral M denotes a flow meter for measuring the flow rate of the returned fluid. Flow meter (M) is provided with a flow detector 220, the signal detected by the flow meter (M) is input to the system control panel (210).

Next, the main functions and features of each component of the present invention configured as described above are summarized as follows.

1. Decompression and pressure holding device

The pressure reducing and pressure holding device (PRSD) has a function of reducing the high pressure at the inlet side (upstream side) to a low pressure at the outlet side, and two types that accurately maintain the set outlet pressure regardless of the inlet pressure or the flow rate change. It will perform its own independent function. That is, the high pressure at the inlet side (upstream side) is reduced to the low pressure at the outlet side, and the set outlet side pressure is maintained accurately regardless of the pressure at the inlet side or the flow rate change.

Specifically, referring to FIG. 5, the first pressure sensor SS1 and the second pressure sensor SS2, the first pressure valve SSV and the first service valve GV1 and the first pressure sensor, which are pressure sensing sensor units centered on the depressurization and pressure holding valve PRSV. 2 service valve (GV2) is provided. Reference numeral ST is a filter.

The decompression and pressure holding device configured as described above maintains the outlet side, which becomes the reference pressure, at all times while maintaining the pressure at the inlet side as the set pressure.

That is, when the inlet pressure is lowered, the pressure is sensed by the first pressure sensor SS1, and the pressure reducing valve and the pressure holding valve PRSV are automatically closed by the pilot control, thereby increasing the pressure until a constant pressure is maintained. . If the outlet pressure is increased due to the added pressure or the returned pressure, the second pressure sensor SS2 detects this and closes the depressurization and pressure maintaining valve PRSV to prevent the reverse flow phenomenon.

In the present invention, the decompression and pressure holding valve in the decompression and pressure holding device is preferably configured to be connected in parallel as follows.

When a large flow rate is required, one valve should be selected in the case of large flows, which will satisfy both the small and large flow rates while reducing the pressure to the required pressure. When very small flow rates are required, the valve seat should be closed immediately after only a small opening. However, if this process is repeated, chattering occurs with excessive wear of the moving parts and causes noise. This problem can be solved by installing two valves consisting of a valve having a large diameter and a valve having a small diameter in parallel, and having one valve separately installed as a spare part to improve stability.

2. Pressure escape and pressure maintaining valve

Pressure escape and pressure holding valve (RSV1) (RSV2) is to maintain a constant pressure at the set inlet regardless of the potential at the inlet side or the flow rate required by the system. Bypass will reduce the load.

3. Pump control valve

Pump control valve (PCV1) (PCV2) is a booster pump (PP2) and the primary circulation pump (PP1) to control the discharge pressure and the function to eliminate the pulsation of the piping system generated from the system at the start and stop of the pump Valve installed on the discharge side pipe.

When the pump starts to operate with the valve closed, the pilot electronic control valve is powered up and the valve begins to open slowly, gradually increasing the pressure in the pipe to the pump head.

When a stop signal is applied to the pump, the power supplied to the pilot electronic control valve is cut off, and the valve closes slowly and reduces the flow rate. As such, when the valve is closed, a limit switch, which is electrically interlocked between the pump and the valve, is operated to cut off the power of the pump, thereby stopping the pump. If the power is cut off suddenly (in case of power failure), the flow stops at the moment the built-in check valve is closed, and the valve is closed regardless of the position of solenoid or diaphragm. Will be prevented.

4. Booster Pump

The booster pump (PP2) is installed in series multi-stages as necessary to supply the heat fluid of the supply pipe to a high position. The booster pump in each stage consists of two or more pumps of rated capacity in parallel. According to the measured value, it can be controlled by the system control panel to control energy flow. The vertical height (pressure range) in each zone is determined by examining the strength and characteristics of the piping and equipment.

The operation control of the booster pump is composed of a method of constructing a sequence to save energy by logarithmic control and variable flow rate control (rotational speed control), and start-up stop by the pressure of the system and logarithmic control according to the load. You may

5. Expansion tank

Expansion tank (ET) is provided in the return header of the heat source supply system to absorb, escape, and adjust the expansion pressure, in the present invention, it is preferable to use an air pressure type or nitrogen pressure type closed tank, air compressor, relief valve , Supplementary equipment such as supply water line and alarm system are provided.

If the return header pressure rises above the set pressure during system operation, it is absorbed and controlled to keep the system pressure constant.

6. Surge tank

The surge tank (ST) prevents pulsation caused by sudden changes in flow rate or flow rate during the operation of the system, and opens the pressure escape valve (RV) or safety valve in case of sudden pressure change. The pressure is reduced. The check valve CV serves to prevent backflow and also functions as a make-up water tank.

The circulation process of the fluid in the multi-stage pressure distribution system of the air conditioning system of the present invention configured as described above is as follows.

First, in the present invention, the pressure in the machine room 200, which is a reference, should be kept constant at all times. As such, the system is operated in a state where the pressure is kept constant, such that the system control panel 210 configured as shown in FIG. 2 operates to operate the first circulation pump PP1, the booster pump PP2 of each stage, and the heat source device ( R) (B) (RB) will operate sequentially.

Looking at the flow of the fluid with reference to Figures 1 and 3 as follows.

The system control panel 210 operates to supply the thermal fluid used in the first stage heating and cooling load 410, the second stage heating and cooling load 420, and the third stage cooling and heating load 430. Each booster pump PP2 of the primary circulation pump PP1 and the booster pump system 300 is driven.

The primary circulation pump PP1 of the heat source supply system 100 is driven to transfer the heat fluid to the booster pump system 300 through the heat source device R (RB) (B).

Each booster pump PP2 of the first stage booster pump system 310, the second stage booster pump system 320, and the third stage booster pump system 330 operates to operate each stage through the pump control valve PCV2. The heating fluid is transferred to the heating and cooling loads (410, 420, 430).

In the heat fluid supplied to the first stage heating and cooling load 410, the heat fluid output from the heat source supply system 100 is directly transmitted through the first stage booster pump system 310.

The heat fluid supplied to the second stage heating / cooling load 420 is dispersed at an appropriate pressure in the first stage booster pump system 310 and transmitted through the second stage booster pump system 320.

The heat fluid supplied to the third stage cooling and heating load 430 is similarly dispersed at an appropriate pressure in the first and second stage booster pump systems 310 and 320 and transferred through the third stage booster pump system 330. .

The booster pumps PP2 of each stage are controlled by the system control panel 210 according to the load, and the fluctuations in the flow rate and pressure generated at the start and stop are quiet operation by the control function of the sequential pump control valve PCV2. Becomes

Next, when the two-way valve (V2) provided in the cooling and heating load 400 is closed by the load fluctuation, the pressure of the water supply side pipe is increased, in this case, the rising pressure is controlled by the control function of the booster pump system (300). Will be done. And the pressure escape and pressure holding valve (RSV2) is an emergency complementary device. In addition, when abnormal pressure is generated in the system at the top of each stage piping system, the pressure escape valve RV or the safety valve of the surge tank ST is operated.

The heat fluid passing through the heating and cooling load 400 is controlled under reduced pressure through a multi-stage pressure reduction control system 600 installed vertically according to the height of the building, and the circulation is repeated while maintaining the internal pressure of the machine room 200 constant. It is done.

The head pressure of the depressurization control system 600 for each stage is vertically zoned in the set pressure range (7-25 kg / cm 2) as described above in consideration of economical efficiency and stability, and the operating pressure is 2 times the head pressure at stop. It can be set as high as ~ 3㎏ / ㎠, and the pressure fluctuation due to hunting and residual offset of the depressurization and pressure holding valve (PRSV) is controlled by the expansion tank (ET) provided in the return header. Will be.

When the pump is stopped, the pump control valve closes slowly and the flow rate decreases to lower the pressure. When the system pressure continues to decrease, the valve closes automatically to maintain the hydrostatic head pressure when the return pressure is below the set pressure of the pressure maintaining valve. When the valve is completely closed, a limit switch will be activated to stop the booster pump.

As described above, in the embodiment of the present invention, the air-conditioning relationship is divided into a first stage heating and cooling load, a second stage heating and cooling load, and a third stage heating and cooling load, but this is for explaining the present invention in detail. It is not intended to limit the scope. Therefore, those skilled in the art will be capable of various modifications and equivalent other embodiments therefrom, and the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

The present invention as described above is configured to vertically zone all the high-rise building air conditioning system in multiple stages, so that the head pressure can be controlled to the appropriate pressure is an invention having the following excellent effects.

First, the present invention can be applied irrespective of the height of the building by vertically zoning the heating / cooling load according to the head pressure generated by the height of the building so that the head pressure in each zone can be controlled within a certain safe use range. .

In other words, it can be maintained at a constant pressure at any pressure load caused by the action of heat fluid flowing through the building air conditioning system, so that the system can be stably maintained even under a large pressure change. will be.

Second, the present invention is possible to operate by installing a large weight heat source equipment such as a refrigerator, heat exchanger, boiler that had to be installed on the middle or roof of a conventional building in the basement.

Therefore, it is possible to reduce the load on the building to reduce the weight of the building structure and increase the safety of the building, and to minimize the risk of noise, vibration and fire.

Third, the present invention is to deliver the heat fluid to the heating and cooling load directly through the piping system in the basement floor can minimize the heat loss can maximize the heat transfer efficiency can achieve the effect of energy saving.

Fourth, the present invention can increase the efficiency of the use of space in the building because it can be used to create a large amount of space occupied by the heat source equipment room in the conventional system while creating economic benefits by reducing the construction cost of the building.
Fifth, the present invention can be managed by centrally placing the heat source equipment devices in the basement floor, efficient operation management of the air conditioning facilities, easy maintenance of mechanical equipment and systems, and can be operated with a small management manpower management costs It is an invention that can reduce the effect.

Fifth, the present invention can be managed by centrally arranging the heat source equipment devices in the basement floor, efficient operation management of the air conditioning facility, easy maintenance of mechanical equipment and systems, and can be operated with a small management manpower management costs It is an invention that can reduce the effect.

Claims (14)

At least one air-conditioning load vertically zoned according to head pressure; A heat source supply system for supplying a heat source to each of the vertical zoned heating and cooling loads; A booster pump for transferring the heat source of the heat source supply system to each of the vertical zoned cooling and heating loads, and a pump control valve for maintaining a set head pressure, is provided between the heat source supply system and each of the vertical zoned heating and cooling loads. At least two booster pump systems; At least two pressure reducing controls installed between the output side return line and the heat source supply system of each vertical zoned heating / cooling load consisting of a decompression and pressure holding device for depressurizing the thermal fluid output from the cooling and heating load to maintain the set head pressure. It is composed of a device system Multi-stage pressure distribution and decompression system of the air conditioning system, characterized in that the head pressure acting in proportion to the height of the building is distributed in multiple stages within the safe head pressure range. According to claim 1, wherein the booster pump system is a multi-step of the air conditioning system, characterized in that the pressure escaping and maintaining valves are further provided in parallel so as to control the pressure so that only a constant pressure is supplied to the booster pump and the pump control valve. Pressure distribution and pressure reduction system. The air conditioner according to claim 1, further comprising a check valve at the lower end of each booster pump PP2 of the booster pump system to prevent the pressure of the upstream layer from acting downstream when the booster pump is stopped. Multi-stage pressure distribution and pressure reduction system for piping system. According to claim 1, wherein the depressurization and pressure holding device is a pressure reducing and pressure holding valve, and the pressure sensing sensor unit is provided on the inlet and output side of the decompression and pressure holding valve to control the pressure to maintain a constant pressure; , Multi-stage pressure distribution and pressure reduction system of the air conditioning system, characterized in that consisting of a service valve. 5. The multi-stage pressure distribution and pressure reduction system of claim 4, wherein the pressure reduction and pressure retention valve further comprises a separate pressure reduction and pressure retention valve having a small diameter for bypassing the thermal fluid. The surge tank of claim 1, wherein a surge tank is provided in communication with the upper part of the circulation line, and the surge tank is provided with a pressure evacuation valve or a safety valve and a check valve. A multi-stage pressure distribution and pressure reduction system of an air conditioning system, characterized in that the pressure escape valve or safety valve prevents sudden pressure fluctuations in the piping system and prevents backflow by the check valve. According to claim 1, wherein the return header of the heat source supply system is further provided with an expansion tank for absorbing, escaping, and adjusting the expansion pressure, Multi-stage pressure distribution and pressure reduction system of air conditioning system, characterized in that it can absorb and adjust the pressure fluctuations caused by the start-up and stop of the pump or the hunting and residual deviation of the pressure control valve. 8. The multistage pressure distribution and decompression system according to claim 7, wherein the expansion tank is an air pressurized or nitrogen pressurized closed tank. The multi-stage pressure distribution and decompression system according to claim 1, wherein the heat source supply system is a local heat source supply system for supplying heat fluid from outside the building. At least one air-conditioning load vertically zoned according to head pressure due to building height; A heat source supply system for supplying a heat source to each of the vertical zoned heating and cooling loads; A booster pump for transferring the heat source of the heat source supply system to each of the vertical zoned cooling and heating loads, and a pump control valve for maintaining a set head pressure, is provided between the heat source supply system and each of the vertical zoned cooling and heating loads. At least two booster pump systems; At least two pressure reducing controls installed between the output side return line and the heat source supply system of each vertical zoned heating / cooling load consisting of a decompression and pressure holding device for depressurizing the thermal fluid output from the cooling and heating load to maintain the set head pressure. It is composed of a device system A high-rise building equipped with a multi-stage pressure dispersion and decompression system, characterized in that the head pressure acting in proportion to the height of the building is multi-stage distributed and reduced in pressure within the safe head pressure range. The multi-stage of the air conditioning system according to claim 10, wherein the booster pump system further comprises a pressure escape and a holding valve installed in parallel to control the pressure so that only the set pressure is supplied to the booster pump and the pump control valve. High-rise building equipped with pressure distribution and pressure reduction system The pressure reducing device and the pressure holding device of claim 10, wherein the pressure sensing sensor unit is configured to detect a pressure on the inlet side and the output side of the pressure reducing valve and the pressure holding valve and to maintain a constant pressure. High-rise building equipped with multi-stage pressure distribution and decompression system. 11. The high-rise building according to claim 10, wherein the heat source supply system is piped to a local heat source supply source for supplying heat fluid from the outside of the building. Using at least two booster pump systems consisting of booster pumps and pump control valves with multiple air-conditioning loads vertically zoned according to head pressure, the head pressure of the thermal fluid in the heat source supply system is within the range of 7-25 kg / cm ² . A first step of distributing and supplying pressure in multiple steps; The head pressure of the thermal fluid output from the heating and cooling load is 7 ~ 25kg / by using at least two pressure reduction control systems composed of the pressure reducing device and the pressure maintaining device to maintain the set head pressure of the thermal fluid output from the heating and cooling loads. The pressure control method of the multi-stage pressure distribution and pressure reduction system of the air conditioning system, characterized in that it comprises a second step of reducing the pressure in a multi-stage within the range of cm ^{2 back} to the heat source supply system.

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