KR101021816B1 - Method of refrigeration ton control for cooling tower aggregation system equipped with variable geometric eliminator - Google Patents

Abstract

PURPOSE: The refrigeration ton controlling system of cooling towers equipped with a variable geometric eliminator is provided to protect filler filled in the cooling towers according to the incident angle and the intensity of solar light. CONSTITUTION: The intensity and the latitude of solar light applied to the air outlet of a cooling tower are detected. The direction and the speed of atmosphere around the inhaling louver of the cooling tower are detected. The wet-bulb temperature and the relative humidity of the atmosphere around the inhaling louver are detected. A set exceed value(Xn) or a set sufficient value(Yn) are extracted. According to the set exceed value, a variable geometric eliminator is unfolded.

Description

Method of refrigeration ton control for cooling tower aggregation system equipped with variable geometric eliminator}

According to the present invention, in a facility requiring a large amount of cooling water, such as an absorption cold and hot water heater, by arranging cooling towers capable of controlling the amount of cooling water scattered and collectively controlling them in consideration of environmental variables, the actual cooling cost is reduced compared to the cooling demand load. It relates to a device configuration of the cooling tower system and its operating method.

Absorption chiller that can produce both cold water and hot water by using high temperature / low temperature regeneration cycle of LiBride aqueous solution can be cooled and heated compared to previous absorption chillers and has low fuel cost. The demand for devices is increasing.

Absorption refrigeration system is a regeneration process throughout the year due to the nature of the cycle, the refrigerant vapor evaporated during the regeneration process is liquefied by heat exchange with the cooling water in the condenser, the cooling water required to cool the condensation heat of the condenser is mainly installed in the building outdoors throughout the year Obtained by a cooling tower driven throughout.

When flowing water is in contact with cold air at a maximized surface area along the filler or layer, some of the water evaporates from the rest of the water, depriving the heat of latent heat of evaporation, and in this process the temperature of the flowing water drops. Cooling towers use this phenomenon. In general, the forced draft type counterflow cooling tower is widely sprayed through the sprinkler on the filling material inside the tower, and the outside air is sucked up and discharged from the bottom through the suction fan at the top of the tower.

As a material of the filler which increases the contact area between water and air, wood, synthetic resin, and metal thin plate are used. On the other hand, it is difficult to discard the used cooling water and obtain new cooling water continuously, and thus the cooling water heat-exchanged in the condenser is supplied to the cooling tower again through a circulation circuit and recooled.

Conventional counterflow cooling towers have a lower portion of the filler for supplying cooling air, through which drips are generated. Therefore, the larger the cooling tower, the greater the overall noise generated, such as the fan noise or the noise of the water flowing along the filling material, the greater the amount of cooling water is scattered to the air outlet at the top of the tower without evaporation without the evaporation . Cooling towers, which are usually installed on rooftops of buildings, can be installed according to the structural strength and area of the rooftop floor, and white smoke phenomena (discharged humid air drops below dew point when saturated air meets and dilutes air around the cooling tower). As it descends, the water vapor in the wet air condenses into fine water droplets, causing white smoke to appear. Therefore, considering the building's rooftop area, supportable load, ambient noise standard and scattering capacity, it lowers the installation load and noise generated per installation area and lower the flow rate of the entire intake air by low unit suction power than one large cooling tower. It may be necessary to install two or more medium-capacity cooling towers to suppress total scatter. In addition, in critical devices that need to be operated in all seasons, such as absorption chillers installed in large buildings, a reserve chiller system is required, and additional cooling towers need to be additionally provided to cope with changes in freezing capacity (CRT).

For these reasons, two or three cooling towers are usually installed on the roof of a large building, and the hot and cold water facilities in the basement of the building supply the hot cooling water after heat exchange from the condenser (or heat exchanger) to the two or more cooling towers by distribution piping. The coolant, which has been cooled down, is collected again and sent back to the condenser in one pipe.

On the other hand, in order to reduce the loss caused by the scattering of the cooling water and pollution of the surrounding environment, a blocking member called an anti-splash plate (elminator) is usually installed inside the cooling tower. Shatterproof plates are generally located in the middle of the suction fan and the sprinkler, and do not evaporate from the filler but collect the coolant (water particles) that fly out of the cooling tower and fall to the filler again. It prevents the hardening and crack damage of the filler due to sun exposure and consequently plays an important role in increasing the useful life of the filler. On the other hand, as the thickness and density of the anti-scatter plate increases, the pipe resistance of the rising air in the cooling tower increases. Therefore, excessive anti-scatter plate installation increases the driving power of the cooling tower and decreases the flow rate of the intake air with high humidity. Stagnation reduces cooling efficiency.

Many of the prior art documents introduced below introduce cooling towers with various cooling types, two or more types of anti-scatter plates (eliminators) mounted thereon, and water replenishment methods for cooling tower operation. The present invention relates to a technology for eliciting the maximum fixed refrigeration capacity within the design of the cooling tower, and to change the cooling tower structure in response to the change of the cooling requirements while maintaining the fixed refrigeration capacity, thereby changing the fixed refrigeration capacity itself in a variable and active manner. Technology is hard to find.

Korean Patent No. 10-0742528; Cooling tower control device that operates in response to coolant temperature, building vibration and fire alarm. Korean Patent No. 10-0938556; A control valve for controlling the amount of cooling water supplied according to evaporation loss. Korean Patent No. 10-0756384; A scattering prevention device using a hollow fiber membrane filter. Korean Patent No. 10-0377507; Combination flow type cooling tower structure with additional cross flow type filler placed under the counter flow type filler and sharing scattering prevention plate.

Public utility model thread 2001-0002231; Of shatterproof plates with varying cross-sectional structure with depth Utility Model Registration 20-0169550; An enclosed cooling tower structure that prevents contamination of the coolant by inserting additional heat exchanger tubes into the filler. Utility Model Registration No. 20-0412707; A control system for controlling a cooling tower by detecting an outlet temperature of cooling water and a level of a cooling tower water tank. Utility Model Registration No. 20-0388478; An anti-scattering blade structure in which the catchment water flows along a scattering plate disposed on both upper and lower portions of a filler and a stacked blade. Utility Model Registration No. 20-0178891; Shatterproof plate structure arranged vertically in a crossflow cooling tower.

The problem to be solved by the present invention is to install a variable shatterproof device in which the opening and closing amount is controlled inside the cooling tower to reduce the suction resistance caused by the shatterproof plate unnecessarily while maintaining the sun exposure suppression ability of the filler, which is an important role of the shatterproof plate, It is to realize a cooling tower that can intelligently control the amount of coolant scattering so as not to reduce cooling efficiency and minimize power consumption so as not to damage the surrounding environment.

Another problem of the present invention is to adjust the amount of scattering considering that the required cooling load and cooling water scattering allowance are changed according to season, daily time zone, and daily weather in the air-conditioning combined use facility that requires continuous operation in all seasons, such as the absorption type cold and hot water facility of a large building. By arranging these small and medium-capacity cooling towers into a collective and controlling the individual scattering quantity, individual suction power, and central cooling water distribution through the control module, the overall life of the equipment is extended and the cooling cost is minimized compared to the required cooling load. It is to implement a cooling tower operation method.

In order to achieve the above object, the biggest concept of the present invention can be differentiated from the existing cooling tower configuration is as follows.

First of all, the real cooling effect of the single cooling tower is derived from the evaporation effect, and the cooling water loss due to scattering is relatively small compared to the cooling water loss due to evaporation. Therefore, except for the degree of damage to the surrounding environment and the prevention of solar exposure of the filler in the cooling tower, temporarily increasing the amount of scattering as needed can increase the flow of counter current in the cooling tower with the same amount of fan power. This leads to a reduction in fan consumption power of the cooling tower relative to the same amount of cooling water evaporation.

Next, the overall actual cooling effect of the plurality of cooling tower colonies depends on the relative humidity of the atmosphere surrounding the cooling tower, and the relative humidity of the atmosphere may vary according to season, time of day, and weather, but under the same climatic conditions, Noted that it depends on the amount of humidity. Therefore, in consideration of the moving speed and the moving direction of the scattered cooling water particles, increasing or decreasing the scattering amount of individual cooling towers at a specific position may optimize the overall relative humidity distribution of the atmosphere around the cooling tower colony. This leads to an increase in total cooling water evaporation relative to the same input power, which in turn leads to an improvement in refrigeration efficiency.

In order to effectively operate the above configuration, a means for detecting and analyzing the surrounding environment acting on the cooling tower is introduced. The main detection analysis means are a solar sensor 31 for detecting the light quantity and latitude of the sunlight acting on the air outlet of the cooling tower, a wind vane 32 for detecting the wind direction and wind speed of the ambient air around the suction louver 24, and a suction louver ( 24) a thermo-hygrometer 33 for detecting wet bulb temperature and relative humidity of the surrounding atmosphere. These environmental analysis means are input to the sensor value processing part 34.

In addition, an adjustment means for optimally controlling the operation of the cooling tower is introduced based on the analysis of the surrounding environment of the cooling tower. The cooling tower control system 300 operates the variable shatterproof device 100 that controls the shatterproof opening and closing amount of the cooling tower air outlet based on the received environmental data at a specific opening and closing amount, and thus the cooling load variation is applied to each cooling tower. It can be further adjusted through the control valve (Vn) for adjusting the hourly supply of the cooling water supplied and the suction fan 22 for adjusting the rotational speed.

At this time, the variable shatterproof device 100, which is the core configuration of the present invention, was designed on the following concept and technical background.

First, we considered the basic cross-sectional structure of the conventional shatterproof structure, which artificially stagnates the flow of wet air, slows down the rate of water molecules scattered and returns to water droplets. This unit shatterproof structure should not be narrow or wide in the arrangement of the folded unit resistance plates, but should be kept constant. Therefore, most of the shatterproof plate is formed in a rectangular lattice form by connecting a linear, curved unit resistance plate side by side at a predetermined interval. With the above structure, it is difficult to design the unit shatterproof plate in other forms besides the rectangular shape, and as a result, it is more difficult to design the unit shatterproof plate in the shape of a fan with the opening and closing area controlled.

In the present invention, the unit scattering prevention plate 11 is not simply arranged side by side in a straight line, nor in the radial direction extending from the center of the outlet to the edge of the outlet. In other words, the unit shatterproof plate 11 applied to the present invention is formed in a circular arc shape to be connected to each other side by side at a predetermined interval in accordance with the shape (mainly circular) of the discharge port, and cut several sheets to form a fan shape. This keeps the unit shatterproof structure intact, regardless of the shape of the unit shatterproof plate of the narrow fan area, and can perform the original water particle collection function well. When the disk-shaped shatterproof plate with the outlet 20 completely closed, the propeller-shaped shatterproof plate with the air outlet 20 mostly opened when the disk-shaped shatterproof plate is completely folded is formed.

Next, in order to prevent the support and drive of the variable shatterproof device 100 and the sealing between the unit shatterproof plates, an actuator 13 for driving and supporting the horizontal movement of the shatterproof plate and a unit support 12 having a diaphragm are introduced. It was. They can be connected to and supported by the suction fan drive shaft or the sprinkler drive shaft, and the driving force necessary for easily opening and closing the shatterproof device from the reducer connected to the drive shaft (14 = for example, a cyclone coaxial reducer with a commercially available movable clutch). Can be supplied.

The benefit of this configuration is to temporarily adjust the amount of scattering within a range that does not adversely affect the surrounding environment, such as temporarily maximizing the amount of scattering at the maximum cooling load or temporarily minimizing the amount of scattering at the minimum cooling load. This can lead to system flexibility, which can improve the unit's cooling efficiency per unit section while maintaining the total cumulative scattering over the entire operating section (annual unit or seasonal unit, etc.) and consequently Cumulative power can be reduced.

The present invention can operate the cooling tower with high efficiency in a time zone where the relative humidity or the temperature of the air is low, and can reduce the actual cooling power by reducing the actual cooling load obtained in accordance with the direction and intensity of the wind.

In addition, the present invention can adequately protect the filler mounted in the cooling tower according to the irradiation angle and the amount of light of the sunlight can exhibit an excellent cooling efficiency while having an equivalent lifetime compared to the cooling tower equipped with a conventional scattering prevention plate.

Lastly, the present invention can cooperatively operate various operating conditions of individual cooling towers according to temperature, humidity, wind direction, and solar light intensity through the distribution of intelligent cooling water to multiple aggregates, thereby flexibly coping with a wide range of operating loads. Since the total life is increased and the required cooling load can be supplied accurately without exceeding the required cooling amount, there is an additional effect of reducing the actual cooling cost on an annual cumulative basis.

1 is a view showing the overall cross-sectional structure of the cooling tower 200 is one of the core configuration of the present invention.
Figure 2a is a side view separately showing the variable shatterproof device 100 in FIG.
Figure 2b is a side exploded view showing a separate scattering prevention device 100 in FIG.
Figure 3a is a plan view of the variable shatterproof device 100 in an unfolded state.
Figure 3b is a plan view of the folded state preventing apparatus 100 folded.
Figure 4 is a plan assembly view showing the unit shatterproof plate and the unit support and the actuator separately.
Figure 5a is a side exploded view of the variable shatterproof device 100 deployed along the inner circumferential direction.
5B is a side exploded view of the variable shatterproof device 100 deployed along the outer circumferential direction.
Figure 6 is a cooling load control system structure showing the cooling tower 200 assembly and the cold and hot water equipment and the connection pipe to which the present invention is applied.
Figure 7 is a flow chart of the cooling load control device to which the present invention is applied.
Figure 8a is a plan view showing a minimum load (winter) operating state of the cooling tower 200 assembly and the connection pipe to which the present invention is applied.
Figure 8b is a plan view showing the intermediate load (spring autumn) operating state of the cooling tower 200 assembly and the connection pipe to which the present invention is applied.
Figure 8c is a plan view showing the intermediate load (summer morning) operating state of the cooling tower 200 assembly and the connection pipe to which the present invention is applied.
Figure 8d is a plan view showing the maximum load (summer day) operating state of the cooling tower 200 assembly and the connection pipe to which the present invention is applied.

With reference to the embodiment of the present invention included in the drawings in order to technically support the above-described solution of the present invention will be described in detail.

However, in the following specific embodiments, components including specific terminology and combinations thereof do not limit the technical spirit inherent in the present invention.

Figure 1 shows the overall cross-sectional structure of the cooling tower 200 is one of the core configuration of the present invention. The illustrated cooling tower is a typical suction type counterflow circular cooling tower which is the most widely used in terms of price / performance.

In the counterflow cooling tower, the flow of external air by the suction fan 22 flows in from the suction louver 24 on the side and rises vertically through the filler to the upper air outlet 20 in the opposite direction. Because of the contact, the heat exchange efficiency is good and the theoretical analysis is easy. In addition, the filling shaft, the watering device 21, the scattering prevention device 100, the suction fan 22, etc., on the coaxial vertical line with the drive shaft 23 as the center support shaft, reduces the installation area and increases the installation height. Therefore, structurally, the present invention is most suitable for application. On the other hand, the gap between the filling material and the lower cold water tank is large, and the noise caused by the falling water is high, and the distance between the air outlet 20 through which the suction air is discharged and the suction louver 24 through which the suction air is introduced is reintroduced. Although it is relatively unlikely, when multiple cooling towers are used as a collective, it is highly likely that wet air discharged from adjacent cooling towers will be re-introduced into the suction louver. Therefore, it is necessary to check the cooling efficiency of adjacent cooling towers due to re-inflow of discharged air. have.

2 to 5 separately show the variable scattering prevention device 100 in the cooling tower of FIG. As shown, the unit shatterproof plate 11 is formed in the shape of the outlet (mainly circular) in the form of a circularly connected side by side at a predetermined interval, and cut several sheets to form a fan shape that does not damage the density of the unit shatterproof structure. In addition, the shape of the unit shatterproof plate is maintained by the fan-shaped unit supports 12 penetrating through the center of the shatterproof plate to enable horizontal movement of the four to six pieces.

Referring to the drawings it can be seen that the arrangement of the unit support 12 is radial and the> -shaped blades constituting the unit prevention structure of the shatterproof plate are arranged in an arc shape.

This joining structure is an important key component to demonstrate the effective performance of the present invention and, for example, if the radial blades are arranged radially, the blades must be cut into very complex shapes to keep the spacing distance constant. Of course, the support must also be connected directly to the actuator, so it must extend radially, so that the gap between the blades at the support location is filled, so that the scattering prevention effect cannot be expected. The passage is greatly reduced. This increases only the suction resistance, so it is difficult to expect a sharp change in scattering when it is folded or unfolded. On the other hand, if the array of> -shaped blades at equal intervals in the shape of an arc as in the present invention, the unit support 11 serves as a support member of the blade as well as the gap between the blades in the folding and unfolding process. Therefore, the variable shatterproof device 100 of the present invention has only a slight increase in weight compared to the fixed eliminator of the prior art and has substantially the same performance when fully unfolded (scattering capacity compared to a drop in suction resistance). ).

The unit shatterproof module configured as described above is arranged in a circular stepwise manner by the actuator 13 having a stepped shape as shown in FIGS. 5A and 5B, folded and unfolded in a horizontal movement direction, and when fully deployed When the circular shatterproof plate that completely covers the air outlet 20 is completely folded, a propeller-shaped shatterproof plate is formed in which the air outlet 20 is mostly opened.

On the other hand, the horizontal movement of the unit support 12 that is responsible for the support and driving of the unit shatterproof plate 11 is performed by the actuator 13 to mechanically connect the reducer 14 and the unit support 12. The reducer 14 may be connected to the suction fan drive shaft or the sprinkler drive shaft to support the entire variable scatter prevention apparatus 100 and receive power required for rotation.

The vertical plate 15 may be further coupled to the outermost and uppermost shatterproof plate when the unit shatterproof plates 11 are fully extended among the unit shatterproof plates connected to the actuator 13 through a unit support. Can be. Of course, the vertical diaphragm 15 may be directly coupled to the actuator because it does not have any influence in the process of expanding and folding the entire variable shatterproof device 100. This vertical plate configuration completely fills the vertical gap of the shatterproof plate unfolded with minimum thickness and minimum weight as in the unfolded state of FIG. 5B.

The fan-shaped unit shatterproof plate 11 has a radius r equal to or greater than the radius R of the air outlet 20 and has a spherical shape in which a shatterproof structure is formed in the circumferential direction. It is set in the range of 30 ° so as to open as many air outlets as possible without being too thick when folded. In the embodiment of the drawing is designed to completely cover the circular air outlet 20 with a total of 16 sheets and covers 90 ° with 4 sheets at a center angle of 22.5 ° per sheet scattering prevention plate. Therefore, the amount of scattering when fully folded based on the drawing example is increased by 300% more than the amount of scattering when fully expanded. Of course, when folded, the suction resistance is reduced, the discharge flow rate is increased, and the evaporation is more smooth on the filler surface by the additional scattering amount. Therefore, it is effective in terms of cost and longevity and does not affect the surrounding environment when the sun is not burning directly above the filler and when the humidity of the ambient air is low, so it is effective to temporarily increase the amount of scattering. Do.

FIG. 6 conceptually illustrates a cooling water piping circuit and a sensing control configuration of the present cooling load adjusting device including a cooling tower 200 assembly, a cold / hot water facility, a connecting pipe, and a control system 300.

At about the center of the cooling tower colony, an environmental sensor for detecting and analyzing the surrounding environment acting on the cooling tower is located. Specifically, the solar sensor 31 for detecting the light quantity and latitude of the sunlight acting on the air outlet of the cooling tower, and the suction louver. (24) wind direction anemometer (32) for detecting the wind direction and the wind speed of the surrounding atmosphere, a suction hygrometer (24) is provided with a thermo-hygrometer (33) for detecting the wet bulb temperature and relative humidity of the surrounding atmosphere and these environmental analysis means The cooling tower control system 300, which is input to the processing unit 34, adjusts the cooling load through a control valve Vn for adjusting the hourly supply amount of cooling water supplied to each cooling tower and a suction fan 22 for adjusting the rotation speed. do. According to the illustrated embodiment and the control embodiment of FIG. 7 below, it is possible to intensively operate a high-efficiency cooling tower in a time zone where the relative humidity or temperature of the air is low, and reduce the actual cooling load obtained in excess according to the direction and intensity of the wind. This can lead to the reduction of the actual cooling water circulation and the cooling tower operating power.

In addition to the above, it is added to control the spread amount of the anti-scatter plate, which is one of the key components of the present invention. The spreading or folding amount of the shatterproof plate causes a decrease in suction resistance, so that the discharge rate is also increased at the same suction rate, so the scattering distance is increased. This results in a decrease in relative humidity near the surrounding cooling tower intake louvers, resulting in an overall improvement in cooling efficiency. On the other hand, unequal suction speeds, such as reduced suction fan speeds, result in an increase in relative humidity near the surrounding cooling tower suction louvers. Therefore, increasing the amount of scattering (folding out the shatterproof device) and lowering the suction fan speed should be attempted in the spring or winter when the humidity is very low.

On the other hand, spreading or folding of the shatterproof device does not make a difference in terms of supply amount of cooling water. Cooling water circulation rate per hour 780 ㎥ / h, cooling water temperature change range Inlet side 37 ℃, outlet side 32 ℃, evaporation amount = 780 * 1000 * (37-32) / 630 = 6190.5 kg / h. If the minimum scattering ratio is assumed to be 0.02% of the circulating water (when the scattering prevention device is fully extended and the scattering is suppressed), the scattering amount = 780 * 1000 * 0.02 / 100 = 156 kg / h. Referring to the conventional cooling tower embodiments of the art, even in a cooling tower without a scattering prevention device is scattered to less than 0.1% of the circulating water, so even if the average scattering amount is assumed to be a median of 0.02 to 0.1% of the circulating water The amount of evaporation is ten to ten times more than the amount of scattering.

Therefore, rather than considering the cost of replenishment water due to scattering, consider the cost-effectiveness in terms of evaporation effect, power consumption of suction fan, and damage of scattered water due to the humidity of the surrounding air. Under conditions that can smoothly absorb, it is necessary to scatter strongly and far to avoid stagnation of wet air around the cooling tower during the recovery process.

Figure 7 shows the processing steps of the cooling load control device of the present invention, including the cooling tower control system to achieve the optimum efficiency in the above-described aspect.

In the first step, the light amount and latitude of the sunlight acting on the air outlet 20 of the cooling tower 200 are sensed and compared with the light quantity / latitude reference value. For example, at night, in the morning, or at sunset, the cooling tower side shell may naturally block the filler from sunlight, and the shatterproof plate at this time is advantageously folded. In the same vein, if the weather is rainy or very cloudy, the amount of sunlight is low, so the shatterproof plate is advantageous at this time.

The second step detects the wind direction and wind speed of the atmosphere around the suction louver 24 of the cooling tower 200 and compares it with the reference value. The third step is the wet bulb temperature and the relative humidity of the atmosphere around the suction louver 24 of the cooling tower 200. Detect and compare with reference value. As described above, since the evaporation is smooth when the ambient humidity is low, the impact is small even if the scattering amount is increased. Likewise, strong dry winds blow moisture around the cooling tower, which can increase the amount of scattering.

The fourth step is a step of extracting the set excess value Xn or the set undervalued Yn during the first to third steps. The lower value Yn of steps 5-1 and 4, in which the variable shatterproof device 100 is extended and operated so as to reduce the amount of cooling water scattered according to the extraction number and the excess amount of the excess value Xn of the fourth step. Step 5-2 is followed by folding the variable shatterproof device 100 to increase the amount of coolant scattered according to the extraction number and the amount of extraction of the water, and as an additional measure, the excess value Xn of the fourth step. 6-1 to reduce the hourly supply of cooling water through the control valve (Vn) to increase the speed of the suction fan 22 to increase the amount of air discharge in accordance with the extraction number and excess amount of Reduce the speed of the suction fan 22 so that the amount of air discharge decreases according to the number of extraction and the amount of undershoot Yn of the step and the fourth step, or adjust the control valve Vn to increase the amount of cooling water circulation. To increase the hourly supply of cooling water through Two steps can follow. In each step, the portion drawn with a blue line is a portion that can be retried or returned after the return on the control circuit setting of the cooling tower control system 300.

8a to d are some examples showing how the cooling tower 200 assembly and the connection pipe to which the present invention is applied can be optimally operated under various environmental conditions.

8A shows the winter minimum load operating condition. One cooling tower that hits the wind directly under low northwest wind conditions is operating at low speed with the shatterproof flap folded. At this time, only one fan is operated at low speed without damaging the dry environment in winter at the expense of supplementary water, thereby saving the maximum power.

Figure 8b shows the spring load mid-load operating state. Two cooling towers directly hitting the wind are operating at low speed with the shatterproof flap folded under conditions where the west wind is blowing relatively strongly. Even at this point, a small amount of replenishment water can be used to save as much power as possible by operating only two fans at low speeds without damaging the dry, dry environment of spring and autumn.

8C shows another intermediate load (summer morning) operating condition. One cooling tower that hits the wind directly under the condition that the southeast wind blows is extended while the other three cooling towers in the zone of influence due to evaporation inside the cooling tower are operated while the shatterproof plates are folded. The suction fan of the southeast cooling tower with increased suction resistance runs at high speed to maintain the evaporation effect. The remaining three suction fans run at medium speed. In this case, in the morning and evening, when the index is less unpleasant, and also avoids the time when the sunlight does not burn, while maintaining the life of the filler material temporarily increases the amount of scattering to maximize the cooling efficiency compared to the input power. It is recommended to keep the fan speed below medium speed as it can cause some damage to the environment.

Figure 8d shows the maximum load operating state during the summer day. It is a condition of peak load without wind, humidity and strong sunlight. All cooling towers run at high speed with the shatterproof flaps open. When building a specific building, matching the number of cooling towers with the individual capacity according to the capacity of the absorption chiller system required for the building and the cooling capacity that can be generated in the above conditions enables the design of an air conditioning refrigeration system having the maximum effect on the system implementation cost.

While the embodiments of the present invention have been described in detail with reference to the drawings, the technical spirit of the present invention is not limited to the above embodiments.

In other words, those of ordinary skill in the art to which the present invention pertains can utilize the technical spirit contained in the specification and drawings of the present invention, and, if necessary, simply change and simplify the description and drawings of the present invention. Although extended examples may be implemented, these are also clearly included in the scope of the present invention as expressed by the following claims.

The present invention focuses on optimal control of medium and large sized dual absorption absorption cold and hot water units with small and medium sized cooling towers. However, the smaller the cooling capacity of a unit cooling tower or the larger the total number of cooling towers, the better the effect. Exert. Therefore, in the field of ultra-small single-effect absorption air conditioner of small group households, which is considered as an alternative to reducing the demand for gas for heating in winter or the demand for electric power for cooling in summer, it will be a technological leap as well as a platform for commercialization. Can be.

100: variable shatterproof device
11: unit shatterproof
12: unit support
13: actuator
14: reducer
15: vertical plate
θ: center angle of unit shatterproof plate
200: cooling tower
20: air outlet
21: sprinkler
22: suction fan
23: drive shaft
24: suction louver
Vn: (cooling water) regulating valve
300: cooling tower control system
31: solar sensor
32: Wind vane
33: Thermo-hygrometer
34: sensor value processing unit
Xn: Out of detection range
Yn: Out of range
An: Actuator (device number)
Mn: motor (device number)

Claims (4)

A first step of detecting the light amount and latitude of the sunlight acting on the air outlet 20 of the cooling tower 200;
A second step of sensing the wind direction and the wind speed of the atmosphere around the suction louver 24 of the cooling tower 200;
A third step of sensing wet bulb temperature and relative humidity of the atmosphere around the suction louver 24 of the cooling tower 200;
A fourth step of extracting the set excess value Xn or the set undervalue Yn during the first to third steps; And
In accordance with the extraction number and the excess amount of the excess value (Xn) of the fourth step, the amount of scattering of the cooling water is reduced,
Fan-shaped unit shatterproof plate 11 having a center angle θ of 15 ° to 30 ° and having a radius r equal to or greater than the radius R of the air outlet 20 and having a shatterproof structure in the circumferential direction And the fan-shaped unit supports 12 supporting 4 to 6 pieces of the unit shatterproof plate to be movable horizontally, and the unit shatterproof plate to be expanded or folded in the horizontal movement direction. A stepped actuator 13, a drive shaft 23 connected to the watering device 21 or the suction fan 22 to supply power, and one side connected to the drive shaft 23, and the other side to the actuator 13. It is configured to include a reducer 14 is connected to the power supply from the drive shaft to transfer the driving force to the actuator, the unit shatterproof plate 11 is completely unfolded by the two-way driving force Or 5-1 to fully unfold the variable shatterproof device 100, wherein the air outlet 20 is almost closed or opened at least in three quarters to sixths of a sixth. Step; Cooling load control method of at least one cooling tower configured to include. The method of claim 1, wherein after step 5-1,
The speed of the suction fan 22 is increased to increase the air discharge amount according to the extraction number and the excess amount of the excess value Xn in the fourth step, or cooled through the control valve Vn to reduce the cooling water circulation amount. At least one cooling tower (200) cooling load control method further comprises a; 6-1 step of reducing the hourly supply of water. A first step of detecting the light amount and latitude of the sunlight acting on the air outlet 20 of the cooling tower 200;
A second step of sensing the wind direction and the wind speed of the atmosphere around the suction louver 24 of the cooling tower 200;
A third step of sensing wet bulb temperature and relative humidity of the atmosphere around the suction louver 24 of the cooling tower 200;
A fourth step of extracting the set excess value Xn or the set undervalue Yn during the first to third steps; And
To increase the amount of scattering of the cooling water according to the number of extraction and the amount of extraction of the under value (Yn) of the fourth step,
Fan-shaped unit shatterproof plate 11 having a center angle θ of 15 ° to 30 ° and having a radius r equal to or greater than the radius R of the air outlet 20 and having a shatterproof structure in the circumferential direction And the fan-shaped unit supports 12 supporting 4 to 6 pieces of the unit shatterproof plate to be movable horizontally, and the unit shatterproof plate to be expanded or folded in the horizontal movement direction. A stepped actuator 13, a drive shaft 23 connected to the watering device 21 or the suction fan 22 to supply power, and one side connected to the drive shaft 23, and the other side to the actuator 13. It is configured to include a reducer 14 is connected to the power supply from the drive shaft to transfer the driving force to the actuator, the unit shatterproof plate 11 is completely unfolded by the two-way driving force 5-2 which folds or operates the variable shatterproof device 100, characterized in that the air outlet 20 is almost closed or opened at least in three quarters to sixths by being fully folded. Step; Cooling load control method of at least one cooling tower configured to include. The method of claim 3, wherein after step 5-2,
The speed of the suction fan 22 is reduced to reduce the amount of air discharged according to the extraction number and the amount of extraction of the lower value Yn in the fourth step, or cooled through the control valve Vn to increase the cooling water circulation amount. At least one cooling tower (200) cooling load control method further comprises a; 6-6 step of increasing the hourly supply of water.

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