Cooling tower operation management method, operation management system and operation management program

Abstract

To provide an operation management method for a cooling tower, an operation management system, and a program for operation management, capable of continuing operation of the cooling tower even when a disaster or the like causes a failure in water supply and sewerage.SOLUTION: An operation management method for a cooling tower that discharges drainage to a drainage facility, the method comprising: determining whether or not an emergency water tank can be installed when the drainage facility cannot be used; switching the cooling tower to a non-blow operation when the emergency water tank cannot be installed; and determining whether or not a water recovery facility can be installed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method, system, and program for managing the operation of a cooling tower when a water supply system, sewerage system, or the like is disrupted due to a large-scale disaster or the like. [Background technology]

[0002] In the event of a large-scale disaster, there is a high possibility that water supply will be cut off, and it may take a considerable amount of time for the water supply to be restored. Therefore, for cooling tower facilities that require large amounts of water, there is a risk that the facilities will stop operating when the water supply is cut off, and ultimately the entire system that uses the cooling tower facilities will stop operating (for example, the shutdown of a general factory, power plant, or data center). Therefore, it is necessary to reduce the risk of the cooling facilities stopping as much as possible.

[0003] Patent No. 6342204 considers supplying water stored in a water storage system in the event of a disaster, and Patent No. 6463908 considers using a dry cooling tower. However, neither of these documents discloses a system that allows for a smooth transition in the operation of a cooling tower to an operating state in the event of a disaster. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6342204 [Patent Document 2] Patent No. 6463908 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a cooling tower operation management method, an operation management system, and an operation management program that enable the cooling tower to continue operating even when a failure occurs in the water supply, sewerage, or sewage system due to a disaster or the like. [Means for solving the problem]

[0006] The gist of the present invention is as follows.

[0007] [1] A method for operating and managing a cooling tower that discharges wastewater into a drainage system, comprising: When the drainage facility becomes unusable or is predicted to become unusable, determine whether or not an emergency water tank can be installed; If an emergency water tank cannot be installed, the cooling tower can be switched to non-blow operation. If an emergency water tank can be installed, determine whether or not water recovery equipment is available. A cooling tower operation management method in which, if a water recovery facility is available, the facility is operated at high load, and if not, the cooling tower is operated at high concentration.

[0008] [2] The cooling tower operation management method of [1], which reduces the operating load of the water recovery equipment when the water recovery equipment deviates from specified operating conditions while operating at high load.

[0009] [3] The cooling tower operation management method of [1], wherein the amount of scale inhibitor added is increased when the water quality conditions of the cooling tower deviate from a predetermined range during the non-blow operation or when the water recovery equipment is operating at a high load.

[0010] [4] The cooling tower operation management method of [1], in which, when an increase in the LTD and / or heat exchanger outlet and / or inlet temperature, and / or cooling water pump differential pressure is confirmed during the non-blow operation, the pH of the cooling water is adjusted, the amount of scale inhibitor added is increased, or a different scale inhibitor is additionally added.

[0011] [5] The cooling tower operation management method of [1], wherein, if the emergency water tank can be installed, the emergency water tank is installed and operated, and when the water storage capacity of the emergency water tank reaches its limit, the non-blow operation is performed.

[0012] [6] A method of operating and managing a cooling tower according to [1], in which, if the emergency water tank can be installed, the emergency water tank is installed and operated, and when the water storage capacity of the emergency water tank reaches its limit, an additional emergency water tank is installed or a portion of the stored water is removed from the emergency water tank.

[0013] [7] An operation and management device for a cooling tower that discharges wastewater into a drainage system, a means for determining whether an emergency water tank can be installed when the drainage facility is no longer usable or when it is predicted that the facility will be no longer usable; If an emergency water tank cannot be installed, a means of switching the cooling tower to non-blow operation is required. A means for determining whether or not a water recovery facility is available when an emergency water tank can be installed; If a water recovery facility is available, the facility will be operated at high load, and if not, the cooling tower will be operated at high concentration. A cooling tower operation management device having the same.

[0014] [8] A cooling tower operation management device according to [7], which has a means for reducing the operating load of the water recovery equipment when the water recovery equipment deviates from specified operating conditions while operating at high load.

[0015] [9] The cooling tower operation management device of [7], which has a means for increasing the amount of scale inhibitor added when the water quality conditions of the cooling tower deviate from a predetermined range during the non-blow operation or high-load operation of the water recovery equipment.

[0016]

[10] The cooling tower operation management device of [7] has a means for adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or adding another scale inhibitor when an increase in the LTD and / or heat exchanger outlet and / or inlet temperature, and / or cooling water pump differential pressure is confirmed during the non-blow operation.

[0017]

[11] An operation management device for a cooling tower according to [7], which has a means for installing an emergency water tank and operating it if the installation of the emergency water tank is possible, and for performing the non-blow operation when the water storage capacity of the emergency water tank reaches its limit.

[0018]

[12] An operation and management device for a cooling tower as described in [7], which, if the emergency water tank can be installed, installs and operates the emergency water tank, and when the water storage capacity of the emergency water tank reaches its limit, installs an additional emergency water tank or has a means for transporting part of the stored water from the emergency water tank.

[0019]

[13] An operation and management program for a cooling tower that discharges wastewater to a drainage system, comprising: a step of determining whether or not an emergency water tank can be installed when the drainage facility is no longer usable or is predicted to be no longer usable; If an emergency water tank cannot be installed, switching the cooling tower to non-blow operation; If an emergency water tank can be installed, determining whether or not a water recovery facility is available; If a water recovery facility is provided, the water recovery facility is operated at a high load, and if not, the cooling tower is operated at a high concentration. A cooling tower operation management program that runs on a computer.

[0020]

[14] The cooling tower operation management program of

[13] , which has a step of reducing the operating load of the water recovery equipment when the water recovery equipment deviates from specified operating conditions while operating at high load.

[0021]

[15] An operation management program for a cooling tower according to

[13] , which comprises a step of increasing the amount of scale inhibitor added if the water quality conditions of the cooling tower deviate from a predetermined range during non-blow operation or high-load operation of the water recovery equipment.

[0022]

[16] An operation management program for a cooling tower according to

[13] , which includes a step of adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or adding another scale inhibitor when an increase in the outlet and / or inlet temperature of the LTD and / or heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation.

[0023]

[17] An operation management program for a cooling tower according to

[13] , which has a step of installing an emergency water tank and operating it if the emergency water tank can be installed, and performing the non-blow operation when the water storage capacity of the emergency water tank reaches its limit.

[0024]

[18] An operation management program for a cooling tower according to

[13] , which includes a step of installing an emergency water tank and operating it if the emergency water tank can be installed, and when the water storage capacity of the emergency water tank reaches its limit, installing an additional emergency water tank or transporting some of the stored water from the emergency water tank.

[0025]

[19] A method for operating and managing a cooling tower that uses water from a water supply facility as make-up water, comprising: When the water supply facility is partially or entirely unavailable or is expected to be unavailable, determine whether there are alternative water sources; Use of alternative water sources for at least a portion of the make-up water, if such sources exist; Determine whether the water quality of the alternative water source is within the standard range, and if it is not, adjust the operating conditions of the cooling tower. Switch at least some of the water supply to a backup dunk if an alternative water source is not available; Determine whether or not there is a water recovery facility. If there is a water recovery facility, operate it at high load. If there is no water recovery facility, switch the cooling tower to non-blow operation or high concentration operation. Cooling tower operation and management methods.

[0026]

[20] The operation management method of

[19] , which uses the spare tank and reduces the operating load of the water recovery equipment when the water recovery equipment deviates from specified operating conditions while operating at high load.

[0027]

[21] The operational management method of

[19] , wherein the amount of scale inhibitor added is increased when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating at high load.

[0028]

[22] An operational management method according to

[19] , in which, when an increase in the LTD and / or heat exchanger outlet and / or inlet temperature, and / or cooling water pump differential pressure is confirmed during the non-blow operation or high concentration operation, the pH of the cooling water is adjusted, the amount of scale inhibitor added is increased, or a different scale inhibitor is additionally added.

[0029]

[23] An operation and management device for a cooling tower that uses water from a water supply facility as make-up water, When the water supply facility is partially or entirely unavailable or is expected to be unavailable, determine whether there are alternative water sources; means for using the alternative water source, if available, as at least a portion of the make-up water; means for determining whether the water quality of the alternative water source is within a standard range and adjusting the operating conditions of the cooling tower when the water quality is outside the standard range; a means for switching at least a portion of the water supply to the backup dunk in the absence of an alternative water source; a means for determining whether or not a water recovery facility is present; If a water recovery facility is provided, a means for operating the water recovery facility under high load; If there is no water recovery facility, it can be used as a means to switch the cooling tower to non-blow operation or high concentration operation. A cooling tower operation management device having the same.

[0030]

[24] An operation management device according to

[23] , which uses the reserve tank and has a means for reducing the operating load of the water recovery equipment when the water recovery equipment deviates from specified operating conditions while operating at high load.

[0031]

[25] An operation management device according to

[23] , which has a means for increasing the amount of anti-scale agent added when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating at high load.

[0032]

[26] An operation management device according to

[23] , which has a means for adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or adding another scale inhibitor when an increase in the outlet and / or inlet temperature of the LTD and / or heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation.

[0033]

[27] An operation and management program for a cooling tower that uses water from a water supply system as make-up water, comprising: When a part or all of the water supply facility becomes unavailable or is predicted to become unavailable, determining whether there is an alternative water source; using the alternative water source, if available, as at least a portion of the make-up water; determining whether the water quality of the alternative water source is within a standard range, and adjusting the operating conditions of the cooling tower if the water quality is outside the standard range; switching at least a portion of the water supply source to the backup dunk if there is no alternative water source; determining whether or not there is a water recovery facility; If a water recovery facility is provided, operating the water recovery facility at a high load; and a step of switching the cooling tower to non-blow operation or high concentration operation when there is no water recovery equipment.

[0034]

[28] An operation management program according to

[27] , which includes a step of reducing the operating load of the water recovery equipment when the water recovery equipment deviates from a predetermined operating condition while using the spare tank and operating the water recovery equipment under high load.

[0035]

[29] An operation management program according to

[27] , which includes a step of adding a high concentration of chemicals when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating at high load.

[0036]

[30] An operation management program according to

[27] , which includes a step of adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or adding another scale inhibitor when an increase in the outlet and / or inlet temperature of the LTD and / or heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation. [Effects of the Invention]

[0037] According to the present invention, even if a water supply, sewerage, or sewage system is damaged due to a disaster or the like, the cooling tower can continue to operate until the damage is resolved. [Brief explanation of the drawings]

[0038] [Figure 1] FIG. 1 is a diagram illustrating the configuration of a cooling tower facility. [Figure 2] FIG. 1 is a diagram illustrating the configuration of a cooling tower facility. [Figure 3] FIG. 1 is a diagram illustrating the configuration of a cooling tower facility. [Figure 4] FIG. 1 is a diagram illustrating the configuration of a cooling tower facility. [Figure 5] FIG. 1 is a diagram illustrating the configuration of a cooling tower facility. [Figure 6] 1 is a flowchart illustrating an embodiment. [Figure 7] 1 is a flowchart illustrating an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0039] Hereinafter, an embodiment will be described with reference to the drawings.

[0040] FIG. 1 shows the flow of a cooling tower facility to which an embodiment of the present invention is applied.

[0041] Cooling water (circulating return water) heated by a heat exchanger 12 such as a refrigerator is sprayed onto the filler 3 from the sprinkler system 2 of the cooling tower 1, where it is cooled by gas-liquid contact with the outside air taken in by the drive of the fan 5, and accumulates in the pit, i.e., the lower water tank 4. The cooling water in the lower water tank 4 is circulated to the heat exchanger 12 by a circulation pump 10, a circulation supply pipe 11, and a circulation return pipe 13.

[0042] New water is replenished through makeup water line 9 in an amount corresponding to the amount of evaporation and droplet scattering loss in cooling tower 1 and the amount of blown water from blow valve 8 on blow line 7. Note that no matter how the amount of evaporation and droplet scattering loss fluctuates or how blowing is performed as needed, makeup water is supplied to keep the water level in the lower water tank 4 of the cooling tower constant, and the amount of water in the cooling water system is maintained at an approximately constant level. This water level control is performed automatically using a ball tap valve 14 or the like. Note that blowing is performed as needed when the water quality in the cooling water system deteriorates (for example, when the electrical conductivity increases above a predetermined value).

[0043] The blown wastewater is sent to the drainage facility.

[0044] A chemical feeder 15 for adding chemicals such as slime inhibitors, scale inhibitors, acids, and alkalis is provided in the makeup water line 9. The chemical feeder is controlled by a chemical feeder control device 16.

[0045] [When the drainage facilities are no longer usable or are predicted to become unusable] If the drainage facility becomes unusable or is predicted to become unusable due to a disaster or other reason, it will be impossible to discharge blown wastewater into the drainage facility.

[0046] Therefore, if the drainage equipment becomes unusable or is predicted to become unusable, as in step S1 of Figure 6, it is determined whether an emergency water tank can be installed (i.e., whether there is space to install an emergency water tank and whether an emergency water tank is available).

[0047] <Non-blow operation> If it is determined that an emergency water tank cannot be installed, non-blow operation is performed (step S2). In non-blow operation, the cooling tower continues to operate without opening the blow valve 8.

[0048] At the beginning of non-blow operation, the concentration rate of the cooling water is low (for example, the electrical conductivity of the cooling water is lower than the specified value), so operation is carried out in the same manner as normal. While performing non-blow operation, the concentration rate (electrical conductivity) is measured and monitored (step S3).

[0049] As non-blow operation continues, the concentration ratio of the cooling water gradually increases and exceeds the specified value. Under normal circumstances, blowing is performed to reduce the concentration ratio to below the specified value. However, since the drainage equipment is unavailable and blowing is not possible, the process proceeds to step S4, where the amount of scale inhibitor added is increased compared to the normal amount, preventing scale deposition without blowing. There are no particular restrictions on the scale inhibitor that can be used. For example, organic polymers such as polyacrylic acid, copolymers of acrylic acid and a copolymerizable vinyl monomer, polymaleic acid, copolymers of maleic acid or maleic anhydride and a copolymerizable vinyl monomer, polyitaconic acid, copolymers of itaconic acid and a copolymerizable vinyl monomer, and phosphorus-based compounds such as nitrilotrimethylenphosphonic acid, hydroxyethylidenephosphonic acid, phosphonobutanetricarboxylic acid, and sodium hexametaphosphate can be used.

[0050] While continuing this high-concentration operation, the LTD or inlet / outlet water temperatures of heat exchanger 12, the differential pressure of the cooling water pump, etc. are monitored (Step S5). If it is determined that the cooling water temperature conditions or the pump status are not normal, such as if the LTD exceeds a predetermined value, the inlet / outlet water temperatures exceed a predetermined temperature, or the differential pressure of the pump increases, and scale deposition has occurred in the cooling water flow path of heat exchanger 12, proceed to Step S6, where acid is added to the makeup water or cooling water to lower the pH of the cooling water to about 6.0 to 7.0 and dissolve the scale. This state is maintained until the drainage system is restored.

[0051] As shown in Figure 6, at the beginning of non-blow operation, control is executed to cycle through steps S3 and S7. In step S7, the cooling water temperature conditions such as LTD are judged as in step S5, and if they are normal, the process returns to step S3. If the cooling water temperature condition becomes abnormal, the process proceeds from step S7 to step S6, and acid is added.

[0052] If the drainage system is restored during the above operation, normal operation will resume.

[0053] [If an emergency water tank can be installed] If it is determined in step S1 that an emergency water tank can be installed, the process proceeds to step S10, where it is determined whether a water recovery facility (reverse osmosis (RO) device) is present. In a cooling tower facility that has a water recovery facility, even during normal operation, blowdown water may be introduced into the water recovery facility for RO treatment, the RO permeate may be reused as makeup water, and only the concentrated water may be discharged to the drainage facility.

[0054] An emergency water tank may be installed before or after step 10, or during any subsequent step.

[0055] <If there is a water recovery facility> When it is determined that a water recovery facility is present as shown in Fig. 2, the process proceeds from step S10 to step S11, where high-load operation is performed to increase the amount of permeate collected in the RO device 21 of the water recovery facility. That is, the water recovery rate in the water recovery facility is increased, and operation is performed to reduce concentrated water, which is discharged into the emergency water tank 22, and this state is maintained. Also, in this state, the differential pressure of the RO device 21 is detected and monitored (step S12).

[0056] When the RO device 21 is operated at a high concentration, the differential pressure across the RO membrane gradually increases. If the differential pressure rises and falls outside the standard range, a scale dispersant or acid is added to the RO feedwater, or the recovery rate of the RO device is reduced (step S13). Note that instead of monitoring the differential pressure, other indicators that indicate a decrease in RO membrane performance, such as flow rate or conductivity, may be used for management.

[0057] If the emergency water tank 22 is likely to become full before the drainage system is restored, an additional emergency water tank is installed, or at least a portion of the water is removed from the emergency water tank 22 by a vacuum truck or the like.

[0058] If these measures cannot be taken, the process shifts to the non-blow operation (step S2) described above.

[0059] <If no water collection equipment is available> If no water recovery equipment is present (e.g., as in FIG. 3), the process proceeds from step S10 to step S14, where the cooling tower equipment is operated at a high concentration so as to reduce the amount of blown-off water. That is, the reference value of the concentration rate (electrical conductivity) that is the standard for blowing off cooling water is increased, and operation is continued, while the quality of the cooling water is monitored (step S15).

[0060] During this highly concentrated operation, the electrical conductivity gradually increases, and when the electrical conductivity exceeds a predetermined value, the process proceeds from step S15 to step S16, where the amount of scale inhibitor added is increased.

[0061] In this highly concentrated operation, blow-down water is discharged into the emergency water tank, but because the amount of blow-down water is less than normal, it can be discharged into the emergency water tank for a long period of time.

[0062] However, if the emergency water tank 22 is likely to become full before the drainage system is restored, an additional emergency water tank will be installed, or at least some of the water will be removed from the emergency water tank 22 using a vacuum truck or the like.

[0063] If these measures cannot be taken, the process shifts to the non-blow operation (step S2) described above.

[0064] [When the use of drinking water or industrial water facilities has become impossible or is predicted to become impossible] If the use of tap water or industrial water (industrial water) facilities becomes impossible or is predicted to become impossible, as shown in Figure 7, in step S21, it is determined whether an alternative water source (groundwater, rainwater, river water, or modified seawater) can be used.

[0065] <Operation using alternative water sources> If it is determined that an alternative water source is available, the process proceeds to step S22, where the water source of makeup water is switched to the alternative water source. Next, the process proceeds to step S23, where it is determined whether the water quality of the alternative water source is within the standard range. If the water quality of the alternative water source is within the standard range, the alternative water source is used as makeup water (Figure 4).

[0066] If the water quality of the alternative water source is outside the standard range, the process proceeds to step S24, where the concentration rate of the cooling water is adjusted or the amount of scale inhibitor added is increased. In this state, the process waits for the water supply or industrial water facility to be restored.

[0067] <Operation when alternative water sources are not available> If an alternative water source is not available, the process proceeds from step S21 to step S25, and the water in the reserve tank 23 is used as make-up water as shown in FIG.

[0068] The process proceeds from step S25 to step S26, where it is determined whether or not water recovery equipment is installed.

[0069] <If no water recovery equipment is available: Non-blow operation using a spare tank> If it is determined in step S26 that there is no water recovery equipment, the process proceeds to step S27, where it is determined whether the quality of the cooling water is outside the standard or within the standard (for example, the electrical conductivity of the cooling water is lower than the specified value). If it is within the standard, the process proceeds to step S28, where non-blow operation is performed. In non-blow operation, the cooling tower continues to operate without opening the blow valve 8.

[0070] While performing non-blow operation, the LTD or inlet / outlet water temperature of heat exchanger 12, the differential pressure of the cooling water pump, etc. are monitored (step S29). If the LTD of heat exchanger 12 exceeds a predetermined value, the inlet / outlet water temperature exceeds a predetermined temperature, or the differential pressure of the pump becomes high, and the cooling water temperature conditions or the pump state become abnormal and it is determined that scale deposition has occurred in heat exchanger 12, proceed to step S32, and add acid to the makeup water or cooling water to lower the pH of the cooling water to about 6.0 to 7.0 and dissolve the scale. This state is maintained until the clean water or industrial water facility is restored.

[0071] If the quality of the cooling water is found to be outside the standard in step S27, the process proceeds to step S30, where the amount of scale inhibitor added is increased from the normal amount so that scale deposition can be prevented without blowing.

[0072] While continuing this high-concentration operation, the LTD of heat exchanger 12, the inlet / outlet water temperatures, the differential pressure of the cooling water pump, etc. are monitored (step S31). If the LTD of heat exchanger 12 exceeds a predetermined value, the inlet / outlet water temperatures exceed a predetermined temperature, or the differential pressure of the pump increases, and the cooling water temperature conditions or the pump status become abnormal and scale deposition is recognized in heat exchanger 12, the process proceeds to step S32, where acid is added to the makeup water or cooling water to lower the pH of the cooling water to about 6.0 to 7.0 and dissolve the scale. This state is maintained until the clean water or industrial water facility is restored.

[0073] If the drainage system is restored during the above operation, normal operation will resume.

[0074] <When water recovery equipment is installed: High load operation of water recovery equipment using a spare tank> When the reserve tank 23 is used and it is determined that the water recovery facility is present as shown in Fig. 5, the process proceeds from step S26 to step S33, where a high-load operation is performed to increase the amount of permeate collected in the RO device 21 of the water recovery facility. That is, the water recovery rate in the water recovery facility is increased, and the permeate is sent to the reserve tank 23. Then, in this state, the differential pressure of the RO device 21 is detected and monitored (step S34).

[0075] When the RO device 21 is operated at a high concentration, the pressure difference across the RO membrane gradually increases. If the pressure difference falls outside the standard range, a scale dispersant or acid is added to the RO feedwater, or the recovery rate of the RO device is reduced (step S35). Instead of monitoring the pressure difference, other indicators that indicate a decrease in RO membrane performance, such as flow rate or conductivity, may be used for management.

[0076] If the water supply or industrial water facilities are restored during the above operation, normal operation will resume. [Explanation of symbols]

[0077] 1 cooling tower 2. Sprinkler system 3 Filling material 4 Lower tank 5 Fans 9 Supply water pipeline 12 Heat exchanger 15 Chemical dosing device 16 Control device 21 RO equipment 22 Emergency water tank 23 Reserve Tank

Claims

1. A method for operating and managing a cooling tower that uses water from a water supply facility as make-up water, comprising: When the water supply facility is partially or entirely unavailable or is expected to be unavailable, determine whether there are alternative water sources; Use of alternative water sources for at least a portion of the make-up water, if such sources exist; Determine whether the water quality of the alternative water source is within the standard range, and if it is not, adjust the operating conditions of the cooling tower. Switch at least some of the water supply to a backup dunk if an alternative water source is not available; Determine whether or not there is a water recovery facility. If there is a water recovery facility, operate it at high load. If there is no water recovery facility, switch the cooling tower to non-blow operation. Cooling tower operation and management methods.

2. 2. The operation management method of claim 1, further comprising the step of reducing the operating load of the water recovery equipment when the water recovery equipment deviates from a predetermined operating condition while the reserve tank is being used and the water recovery equipment is operating under high load.

3. 2. The operation management method according to claim 1, wherein the amount of scale inhibitor added is increased when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating at a high load.

4. 2. The operation management method according to claim 1, wherein, when an increase in the outlet and / or inlet temperatures of the LTD and / or the heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation, the pH of the cooling water is adjusted, the amount of scale inhibitor added is increased, or another scale inhibitor is additionally added.

5. An operation and management device for a cooling tower that uses water from a water supply facility as make-up water, When the water supply facility is partially or entirely unavailable or is expected to be unavailable, determine whether there are alternative water sources; means for using the alternative water source, if available, as at least a portion of the make-up water; means for determining whether the water quality of the alternative water source is within a standard range and adjusting the operating conditions of the cooling tower when the water quality is outside the standard range; a means for switching at least a portion of the water supply to the backup dunk in the absence of an alternative water source; a means for determining whether or not a water recovery facility is present; If a water recovery facility is provided, a means for operating the water recovery facility under high load; If there is no water recovery facility, it can be used as a means to switch the cooling tower to non-blow operation. A cooling tower operation management device having the same.

6. 6. An operation management device according to claim 5, further comprising means for reducing the operating load of the water recovery equipment when the water recovery equipment deviates from predetermined operating conditions while using the reserve tank and operating the water recovery equipment under high load.

7. 6. An operation management device according to claim 5, further comprising means for increasing the amount of scale inhibitor added when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating under high load.

8. 6. The operation management device according to claim 5, further comprising means for adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or additionally adding another scale inhibitor when an increase in the outlet and / or inlet temperature of the LTD and / or the heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation.

9. An operation and management program for a cooling tower that uses water from a water supply facility as make-up water, When a part or all of the water supply facility becomes unavailable or is predicted to become unavailable, determining whether there is an alternative water source; using the alternative water source, if available, as at least a portion of the make-up water; determining whether the water quality of the alternative water source is within a standard range, and adjusting the operating conditions of the cooling tower if the water quality is outside the standard range; switching at least a portion of the water supply source to the backup dunk if an alternative water source is not available; determining whether or not there is a water recovery facility; If a water recovery facility is provided, operating the water recovery facility at high load; If there is no water recovery facility, the cooling tower must be switched to non-blow operation. A cooling tower operation management program that runs on a computer.

10. 10. The operation management program of claim 9, further comprising a step of reducing the operating load of the water recovery equipment when the water recovery equipment deviates from a predetermined operating condition while using the reserve tank and operating the water recovery equipment under high load.

11. 10. The operation management program of claim 9, further comprising a step of adding a high concentration of chemicals when the water quality conditions of the cooling tower deviate from a predetermined range while the reserve tank is being used and the water recovery equipment is operating at high load.

12. 10. The operation management program according to claim 9, further comprising a step of adjusting the pH of the cooling water, increasing the amount of scale inhibitor added, or additionally adding another scale inhibitor when an increase in the outlet and / or inlet temperature of the LTD and / or the heat exchanger, and / or the cooling water pump differential pressure is confirmed during the non-blow operation.

Images