KR20130127017A - Cooling system using under water tank of the buildings and method thereof - Google Patents

Abstract

A cooling system using an underground water tank and a method thereof are disclosed. If the temperature measured in a temperature measuring unit is a predetermined standard temperature or less, a control unit controls a coolant path of a refrigerator to be formed towards the underground water tank. A second valve is opened according to a control signal of the control unit so that the coolant path of a coolant inlet pipe is formed to an outlet of the underground water tank. A fourth valve is opened so that the coolant path of a coolant outlet pipe is formed to an inlet of the underground water tank. If the measured temperature is not the predetermined standard temperature or less, the control unit controls the coolant path of the refrigerator to be formed towards a cooling tower. A first valve is opened according to the control signal of the control unit so that the coolant path of the coolant inlet pipe is formed to the outlet of the cooling tower. A third valve is opened so that the coolant path of the coolant outlet pipe is formed to the inlet of the cooling tower. Therefore, the present invention increases the service life of the refrigerator and reduces the consumption of arsenic acid water and power consumption of the cooling tower by using the underground water tank to cool the cold water of a cooling load side. [Reference numerals] (100) Cooling tower;(200) Control unit;(300) Refrigerator;(400) Underground water tank

Description

Cooling system using under water tank of the buildings and Method

The present invention relates to a cooling system of a building, and more particularly, to a cooling system and a method using an underground storage tank to reduce cooling tower fan power and scattered water consumption by pre-cooling the cooling water of the refrigerator using the underground storage tank of the building.

Recently, as oil prices continue to increase due to the OPEC's continuous reduction policy, the global economic downturn, and the inflow of speculative oil into the oil market, interest in energy-saving facilities is increasing. In the manufacturing plant and computer room equipped with large-scale computing equipment, the air conditioner is operated 24/7 to maintain constant temperature and humidity. Therefore, research and development are being actively conducted to increase energy efficiency of the air conditioner.

A conventional cooling device is a cooling device having an electric compression refrigerator shown in Figure 1 as the most basic form.

As shown in FIG. 1, the cooling apparatus having an electric compression refrigerator includes a cooling water circuit (C1), a return header (RH), and a cold water pump (C1) including a cooling water pump (P1), a refrigerator (10), and a cooling tower (20). It consists of the cold water circuit C2 which consists of P2), the refrigerator 10, and the supply header SH.

Here, the refrigerator 10 is an electric compression refrigerator, first, its configuration and operation principle will be briefly described.

The compressor 10 is composed of a compressor, a condenser and an evaporator, and compresses the refrigerant in a gas state to the compressor and sends it to the condenser, and the condenser sends the coolant supplied through the cooling water pump P1 to the compressor. When the compressed refrigerant is cooled and liquefied, and when the refrigerant liquefied in the condenser is injected into the evaporator by the expansion valve, the injected refrigerant expands rapidly to absorb the surrounding heat and evaporates.

Hereinafter, each circuit of the cooling device provided with the electric compression refrigerator will be described.

The cooling water circuit C1 circulates the cooling water in such a manner that the cooling water, having risen in temperature, passes through the freezer and cools by exchanging heat with outside air in the cooling tower 10, and is then supplied to the freezer 10 through the cooling water pump P1. The cold water circuit C2 recovers cold water from the cooling load side in the return header RH and cools the returned cold water by introducing it into the evaporator inner tube of the refrigerator 10 through a cold water pump P2, where the cold water is cooled. Cold water is circulated by supplying to the cooling load side through the supply header (SH).

Such a cooling device has to operate the refrigerator at all times in order to cool the cold water on the cooling load side, so that the power consumption is high, the consumption of scattered water is high, and the life of the refrigerator is shortened.

The technical problem to be achieved by the present invention is to solve the conventional problems, to reduce the power consumption of the cooling tower, reduce the consumption of scattered water and increase the life of the refrigerator by using an underground reservoir to cool the cold water of the cooling load side, underground reservoir It is to provide a cooling system and method using.

Cooling system using the underground reservoir according to the characteristics of the present invention for achieving the technical problem,

A cooling system comprising a compressor comprising a compressor, a condenser and an evaporator to cool cold water passing through the evaporator, and a cooling tower for cooling the cooling water of the freezer by exchanging heat with outside air.

A cooling water inlet pipe connecting the refrigerator inlet side, the cooling tower outlet side, and the underground water reservoir outlet side to introduce cooling water;

A cooling water outlet pipe connecting the freezer outlet side with the cooling tower inlet side and the underground water tank inlet side to discharge the cooling water;

A temperature measuring unit for measuring the water temperature of the underground reservoir;

When the temperature measured by the temperature measuring unit is equal to or less than a predetermined reference temperature, the cooling water path of the refrigerator is controlled to go in the direction of the underground reservoir, and when the measured temperature is not equal to or less than the reference temperature, the cooling water path of the refrigerator is the cooling tower. A control unit controlling to be formed in a direction;

A first valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water inlet pipe toward the cooling tower outlet;

A second valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water inflow pipe toward the outlet of the underground reservoir;

A third valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water outlet pipe toward the cooling tower inlet;

Opening and closing according to the control signal of the control unit, and in the case of opening, the fourth valve for forming a cooling water path of the cooling water outlet pipe toward the basement reservoir.

Further comprising a cooling pipe installed in the underground reservoir, the cooling pipe is characterized in that for cooling the water flowing through the upper cooling pipe with the water of the underground reservoir.

The reference temperature is characterized in that 20 to 27 degrees Celsius.

Cooling method using an underground reservoir according to the characteristics of the present invention for achieving this technical problem,

A freezer comprising a compressor, a condenser and an evaporator to cool the cold water passing through the evaporator, a cooling tower for cooling the cooling water of the freezer by exchanging air with an outside air, an underground reservoir having a cooling pipe installed therein, the inlet side of the freezer and the exit of the cooling tower. And a cooling water inlet pipe connecting the outlet of the underground water reservoir to introduce the cooling water, and a cooling water outlet pipe connecting the freezer outlet side to the cooling tower inlet and the underground water storage inlet to allow the cooling water to flow out, and according to a control signal of the controller. In the case of opening, the first valve to form a cooling water path of the cooling water inlet pipe toward the exit of the cooling tower, the opening and closing according to the control signal of the control unit, in the case of opening, the cooling water path of the cooling water inlet pipe to the underground reservoir outlet A second valve to be formed toward the side, according to a control signal of the controller Opening and closing, the opening and closing according to the control signal of the third valve and the control unit to form a cooling water path of the cooling water outlet pipe toward the inlet of the cooling tower, in the case of opening, the cooling water path of the cooling water outlet pipe to the underground reservoir A cooling method of a cooling system having a fourth valve to be formed toward an inlet,

Measuring the water temperature of the underground reservoir by the temperature measuring unit;

If the temperature measured by the temperature measuring unit is equal to or less than a predetermined reference temperature, controlling the control unit to control the cooling water path of the refrigerator to the underground reservoir direction;

Opening the second valve according to a control signal of the controller to form a cooling water path of the cooling water inflow pipe toward the underground reservoir outlet;

Opening the fourth valve according to a control signal of the controller to form a cooling water path of the cooling water outlet pipe toward the inlet of the underground reservoir;

If the measured temperature is not equal to or less than the reference temperature, controlling the control unit so that the cooling water path of the refrigerator is formed in the cooling tower direction;

Opening the first valve according to a control signal of the controller to form a cooling water path of a cooling water inlet pipe toward the cooling tower outlet;

And opening the third valve according to a control signal of the controller to form a cooling water path of the cooling water outlet pipe toward the inlet of the cooling tower.

Cooling pipes installed in the underground reservoir is characterized in that for cooling the water flowing through the upper cooling pipe with the water of the underground reservoir.

The cooling pipe is characterized in that the coil for heat exchange.

The reference temperature is characterized in that 20 to 27 degrees Celsius.

Embodiment of the present invention can provide a cooling system and method using an underground reservoir to reduce the power consumption of the cooling tower, reduce the consumption of scattered water and increase the life of the refrigerator by using an underground reservoir to cool the cold water of the cooling load side. .

1 is a block diagram of a conventional cooling system.
2 is a block diagram of a cooling system according to an embodiment of the present invention.
3 is a configuration diagram of a cooling system according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise.

In addition, terms, modules, modules described herein means a unit for processing a specific function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

Now, a cooling system according to an embodiment of the present invention will be described in detail.

2 is a block diagram of a cooling system according to an embodiment of the present invention, Figure 3 is a block diagram of a cooling system according to an embodiment of the present invention.

2 or 3, the cooling system according to an embodiment of the present invention,

Compressor, condenser and evaporator is configured to cool the cold water passing through the evaporator 300, a cooling tower 100 for cooling the cooling water of the freezer by exchanging with the outside air, underground reservoir tank 400 is installed inside the cooling pipe, Cooling water inlet pipe 700 for connecting the refrigerator inlet side and the cooling tower outlet side and the underground water tank outlet side to introduce the cooling water, and connecting the freezer outlet side and the cooling tower inlet side and the underground water tank inlet side to allow the cooling water to flow out. Opening and closing according to the control signal of the cooling water outlet pipe 800, the control unit 200, the control unit, in the case of opening the first valve 510 to form a cooling water path of the cooling water inlet pipe toward the outlet of the cooling tower, of the control unit Opening and closing according to the control signal, in the case of opening, the second valve to form a cooling water path of the cooling water inlet pipe toward the outlet of the underground reservoir The valve 520 is opened and closed according to the control signal of the controller, and in the case of opening, the valve 520 is opened and closed according to the control signal of the third valve 530 and the controller to form a cooling water path of the cooling water outlet pipe toward the inlet of the cooling tower. In the case of opening, a fourth valve 540 is formed to form a cooling water path of the cooling water outlet pipe toward the underground reservoir inlet.

The temperature measuring unit 600 measures the water temperature of the underground reservoir 400, specifically, it is preferable to measure the water temperature of the cooling water of the outlet side of the underground reservoir 400, and, if necessary, measure the water temperature in the underground reservoir. You may.

The controller 200 controls the cooling water path of the refrigerator 300 to move toward the underground reservoir 400 when the temperature measured by the temperature measuring unit 600 is equal to or less than a predetermined reference temperature, and the measured temperature. If it is not less than the reference temperature is controlled so that the cooling water path of the refrigerator 300 is formed in the cooling tower direction.

The cooling pipe 410 is installed inside the underground reservoir 400, and the cooling pipe 410 cools the water flowing through the upper cooling pipe with the water of the underground reservoir 400. The cooling pipe 400 is preferably formed of an indirect heat exchange coil is excellent in the cooling effect, other piping may be used if necessary.

It is preferable for cooling that the reference temperature is 20 to 27 degrees Celsius, and may be set to another temperature as necessary.

Referring to the operation of the cooling system using an underground reservoir having such a configuration in detail as follows.

Although not shown in the drawing, the refrigerator 300 recovers cold water from the cooling load side in the return header and cools the returned cold water by introducing it into the evaporator inner tube of the freezer through a cold water pump, where the cooled cold water is cooled through a supply header. The cold water is circulated by feeding to the load side.

The refrigerator 300 is operated to cool the cold water on the cooling load side.

On the other hand, the operation of the embodiment of the present invention for cooling the cooling water of the refrigerator 300 is as follows.

First, the temperature measuring unit 600 measures the water temperature of the underground reservoir 400 and outputs it to the control unit 200 (S410).

Then, the control unit 200 determines whether the temperature measured by the temperature measuring unit 600 is less than a predetermined reference temperature (S420). In this case, the controller 200 may store the reference temperature in the internal memory as necessary.

If the temperature measured by the temperature measuring unit 600 is less than or equal to a predetermined reference temperature, the controller 200 controls the cooling water path of the refrigerator 300 to be directed toward the underground reservoir 400.

Then, the second valve 520 is opened according to the control signal of the control unit so that the cooling water path of the cooling water inlet pipe 700 is formed toward the outlet of the underground reservoir 400, and the fourth valve 540 is opened. As a result, a cooling water path of the cooling water outlet pipe 800 is formed toward the inlet of the underground reservoir 400 (S430).

Then, the cooling water of the refrigerator 300 flows through the path of the cooling water outlet pipe 800, the pipe 410 of the underground reservoir 400, and the cooling water inlet pipe 700, and cooling is performed in the pipe 410 of the underground reservoir 400. do. At this time, the operation of the cooling tower 100 is stopped and power can be saved.

On the other hand, if the measured temperature is not equal to or less than the reference temperature, the controller 200 controls the cooling water path of the refrigerator 300 to be formed toward the cooling tower 100.

Then, the first valve 510 is opened according to the control signal of the controller 200 to form a cooling water path of the cooling water inlet pipe 700 toward the cooling tower outlet, and the third valve 530 is opened to the A cooling water path of the cooling water outlet pipe 800 is formed toward the inlet of the cooling tower 100 (S440).

At this time, the controller 200 operates the fan of the cooling tower 100. Operation of such a fan is well known in the art, and thus a detailed description thereof will be omitted.

Then, the cooling water of the refrigerator 300 is cooled in the cooling tower 100 while flowing in the path of the cooling water outlet pipe 800, the cooling tower 100, and the cooling water inlet pipe 700.

The power saved by this operation is calculated as follows.

For a 10,000 pyeong commercial building, the capacity of the refrigerator will be 2 units of 500 R / T, and 2 units of cooling tower 600 R / T ..

Where RT = Refrigeration ton refrigeration ton / hour.

At this time, when using the tank heat of 300㎥ (square meter) (15 degrees Celsius-25 degrees Celsius = ΔT 10 degrees Celsius)

Bath heat capacity is 300 square meters (㎥) * 10 degrees Celsius (10 ℃) * 1000ℓ / ㎥ = 3,000,000Kcal.

3,000,000Kcal = 992RT ?? 1,000 RT

3,024kcal / RT

Therefore, the tank heat capacity can be in charge of the freezer for about 1 hour, cooling capacity.

Therefore, a 1/8 ㅧ 100% = 12.5% cooling tower operator can save 12.5% of the power and scattered water consumption after 8 hours of operation per day.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (7)

A cooling system comprising a compressor comprising a compressor, a condenser and an evaporator to cool cold water passing through the evaporator, and a cooling tower for cooling the cooling water of the freezer by exchanging heat with outside air.
A cooling water inlet pipe connecting the refrigerator inlet side, the cooling tower outlet side, and the underground water reservoir outlet side to introduce cooling water;
A cooling water outlet pipe connecting the freezer outlet side with the cooling tower inlet side and the underground water tank inlet side to discharge the cooling water;
A temperature measuring unit for measuring the water temperature of the underground reservoir;
When the temperature measured by the temperature measuring unit is equal to or less than a predetermined reference temperature, the cooling water path of the refrigerator is controlled to go in the direction of the underground reservoir, and when the measured temperature is not equal to or less than the reference temperature, the cooling water path of the refrigerator is the cooling tower. A control unit controlling to be formed in a direction;
A first valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water inlet pipe toward the cooling tower outlet;
A second valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water inflow pipe toward the outlet of the underground reservoir;
A third valve which opens and closes according to a control signal of the controller, and in the case of opening, forms a cooling water path of the cooling water outlet pipe toward the cooling tower inlet;
Opening and closing according to the control signal of the control unit, in the case of opening, the cooling system using the underground reservoir comprising a fourth valve to form a cooling water path of the cooling water outlet pipe toward the basement reservoir. The method of claim 1,
Further comprising a cooling pipe installed in the underground reservoir,
The cooling pipe is a cooling system using an underground reservoir, characterized in that for cooling the water flowing through the upper cooling pipe with the water of the underground reservoir. The method of claim 1,
The reference temperature is a cooling system using an underground reservoir, characterized in that 20 to 27 degrees Celsius. A freezer comprising a compressor, a condenser and an evaporator to cool the cold water passing through the evaporator, a cooling tower for cooling the cooling water of the freezer by exchanging air with an outside air, an underground water tank having a cooling pipe installed therein, the inlet side of the freezer and the exit of the cooling tower. And a cooling water inlet pipe connecting the outlet of the underground water reservoir to introduce the cooling water, and a cooling water outlet pipe connecting the freezer outlet side to the cooling tower inlet and the underground water storage inlet to allow the cooling water to flow out, and according to a control signal of the controller. In the case of opening, the first valve to form a cooling water path of the cooling water inlet pipe toward the exit of the cooling tower, the opening and closing according to the control signal of the control unit, in the case of opening, the cooling water path of the cooling water inlet pipe to the underground reservoir outlet A second valve to be formed toward the side, according to a control signal of the controller Opening and closing, the opening and closing according to the control signal of the third valve and the control unit to form a cooling water path of the cooling water outlet pipe toward the inlet of the cooling tower, in the case of opening, the cooling water path of the cooling water outlet pipe to the underground reservoir A cooling method of a cooling system having a fourth valve to be formed toward an inlet,
Measuring the water temperature of the underground reservoir by the temperature measuring unit;
If the temperature measured by the temperature measuring unit is equal to or less than a predetermined reference temperature, controlling the control unit to control the cooling water path of the refrigerator to the underground reservoir direction;
Opening the second valve according to a control signal of the controller to form a cooling water path of the cooling water inflow pipe toward the underground reservoir outlet;
Opening the fourth valve according to a control signal of the controller to form a cooling water path of the cooling water outlet pipe toward the inlet of the underground reservoir;
If the measured temperature is not equal to or less than the reference temperature, controlling the control unit so that the cooling water path of the refrigerator is formed in the cooling tower direction;
Opening the first valve according to a control signal of the controller to form a cooling water path of a cooling water inlet pipe toward the cooling tower outlet;
And a third valve is opened according to a control signal of the controller to form a cooling water path of the cooling water outlet pipe toward the inlet of the cooling tower. 5. The method of claim 4,
The cooling pipe installed in the underground reservoir is a cooling method using the underground reservoir, characterized in that for cooling the water flowing through the upper cooling pipe with the water of the underground reservoir. The method of claim 5,
The cooling pipe is a cooling method using an underground reservoir, characterized in that the coil for heat exchange. The method according to claim 6,
The reference temperature is a cooling method using an underground reservoir, characterized in that 20 to 27 degrees Celsius.

Images