Performance evaluation system for antifouling coating films

Abstract

To evaluate performance of an anti-fouling coating film applied onto a plate exposed to actual flow of a fluid.SOLUTION: A tabular substrate 1 having an anti-fouling coating film applied thereto is stored in a storing case 2, and a test fluid (seawater-agent) is circulated from a fluid inflow passage 3 into the case 2 along a substrate 1 surface, and the state of a film thickness of the anti-fouling coating film on the substrate 1 and attachment of organisms or the like after circulation of the fluid, is evaluated by evaluation means 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a system for evaluating the performance of an antifouling coating film applied to a component of a flow path through which a fluid flows. [Background technology]

[0002] Seawater (fluid) is taken in and used as cooling water for cooling equipment, for example, a condenser that cools the exhaust steam (fluid) of a steam turbine. If marine organisms attach to and multiply inside the water passages for the cooling water (seawater) of the condenser, there is a risk that the piping will become clogged or the cooling efficiency will decrease, so it is necessary to prevent marine organisms from attaching to and multiplying in the water passages and piping of the condenser (to prevent biological adhesions).

[0003] For this reason, paints with antifouling properties (paints containing antifouling agents, paints not containing antifouling agents, etc.) that suppress the attachment and proliferation of marine organisms are applied to the components (wall surfaces of the channels) that make up the cooling water (seawater) channels. When selecting paints with antifouling properties, it is preferable to evaluate the environmental risks, antifouling effects, and sustainability of the antifouling effects. It is also preferable to evaluate the suitability for the actual location where the paint will be applied.

[0004] As a technique for evaluating the performance of an antifouling agent, a technique has been known in the past in which a test piece coated with the antifouling agent is immersed in test water containing aquatic organisms for a predetermined time, and the amount of attached matter is quantified to evaluate the antifouling performance (see, for example, Patent Document 1). By using the technique of Patent Document 1, the performance of the antifouling agent can be evaluated at an early stage.

[0005] However, the technology disclosed in Patent Document 1 is a technology for evaluating the results of immersing a test piece in test water, and therefore it is currently not possible to evaluate performance in a state where there is a flow of cooling water, etc. It is possible to create a fluid flow by rotating a test piece coated with an antifouling agent in the test water, but the test water rotates together with the test piece, making it impossible to reproduce an actual flow. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2018-167654 A Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a performance evaluation system for an antifouling coating film that can evaluate the performance of an antifouling coating film applied to a plate material while exposed to an actual flow of a fluid, such as cooling water. [Means for solving the problem]

[0008] In order to achieve the above object, the performance evaluation system for an antifouling coating film according to the present invention as claimed in claim 1 is as follows: A performance evaluation system for an antifouling coating film applied to a component of a flow path through which a fluid flows, comprising: A plate-shaped substrate to which an antifouling coating film is applied; A case that accommodates the plate-shaped base material; A flow means for flowing a test fluid into the case along a surface of the substrate; an evaluation means for evaluating a state of the antifouling coating film of the substrate after the test fluid has flowed therethrough; A plurality of substrates are housed in the case, the evaluation means has an adhesion evaluation function for evaluating the state of organisms adhering to the antifouling coating film after the test fluid has flowed through the antifouling coating film, a flow container for accommodating the case, A plurality of the cases are accommodated in the flow container in the flow direction of the test fluid, Each of the cases is provided with a flow rate adjusting means for changing the flow area of ​​the test fluid. It is characterized by:

[0009] In the present invention according to claim 1, a plate-shaped substrate coated with an antifouling coating film is housed in a case, and a test fluid is passed through the case by a passing means, so that the test fluid passes along the surface of the substrate (the test fluid is passed parallel to the plate material). The state of the antifouling coating film on the substrate after the test fluid has passed through is evaluated by an evaluation means. Then, the adhesion evaluation function evaluates the state of organisms attached to the antifouling coating film for a plurality of substrates, thereby evaluating the state of the antifouling coating film. Furthermore, a plurality of cases are housed in series in the flow container, and the flow area of ​​the surface intersecting the flow direction of the test fluid is adjusted in each case by the flow rate adjusting means. For example, the inlet area of ​​the inlet is changed to change the inlet area of ​​the test fluid. This allows the flow rate of the test fluid to be adjusted for each case, and the effect of the flow rate of the test fluid to be evaluated.

[0010] This allows the performance of an antifouling coating film applied to a substrate to be evaluated while exposed to an actual flow of a fluid, for example a cooling fluid.

[0015] Also, Claim 2 The performance evaluation system for an antifouling coating film of the present invention relates to Claim 1 In the antifouling coating performance evaluation system described in the above, the antifouling coating film is applied to only one of the opposing surfaces of a plurality of substrates contained in the case, and the adhesion evaluation function of the evaluation means is characterized in that it evaluates the state of organisms adhering to the antifouling coating film by comparing the adhesion state of organisms on each opposing surface, on which the antifouling coating film is applied and on which the antifouling coating film is not applied after the test fluid has flowed, after which the test fluid has flowed.

[0016] Claim 2 In the present invention, the adhesion of organisms on a surface of a substrate coated with an antifouling coating film and a surface of a substrate not coated with an antifouling coating film can be compared, and the adhesion of organisms on multiple opposing surfaces can be compared with each other, regardless of the flow rate of the inflowing test fluid or the uneven distribution of organisms contained in the test fluid. This makes it possible to reduce the effects of the flow rate of the inflowing test fluid and the uneven distribution of organisms contained in the test fluid.

[0017] Also, Claim 3 The performance evaluation system for an antifouling coating film of the present invention relates to Claim 1 or Claim 2 In the antifouling coating film performance evaluation system described in the above, the test fluid supplied by the distribution means is seawater.

[0018] Claim 3 In the present invention, the condition of the antifouling coating film when seawater flows through it can be evaluated.

[0019] Also, Claim 4 The performance evaluation system for an antifouling coating film of the present invention relates to Claims 1 to 3In the antifouling coating film performance evaluation system described in any one of the above, the distribution means has a chemical supply means for mixing a chemical into the test fluid.

[0020] Claim 5 In the present invention, a chemical can be mixed into the test fluid by the chemical supplying means. For example, a test fluid mixed with a chemical (chlorine as an oxidizing chemical) for suppressing the attachment and proliferation of marine organisms inside the waterway can be prepared, and the condition of the antifouling coating film can be evaluated when the test fluid mixed with the chemical is passed through the waterway.

[0021] Also, Claim 5 to achieve the above object The performance evaluation system for an antifouling coating film of the present invention relates to A performance evaluation system for an antifouling coating film applied to a component of a flow path through which a fluid flows, comprising: A plate-shaped substrate to which an antifouling coating film is applied; A case that accommodates the plate-shaped base material; A flow means for flowing a test fluid into the case along a surface of the substrate; an evaluation means for evaluating a state of the antifouling coating film of the substrate after the test fluid has flowed therethrough; The case is installed in a location where the test fluid flows, The flow means is configured by flowing the test fluid into the case along the surface of the base material, the evaluation means has an adhesion evaluation function for evaluating the state of organisms adhering to the antifouling coating film after the test fluid has flowed through the antifouling coating film, a flow container for accommodating the case, The flow container accommodates a plurality of the cases in a direction intersecting a flow direction of the test fluid, The outlet of the test fluid of each of the cases is provided with a flow rate adjusting means for changing the outflow area of ​​the test fluid. It is characterized by:

[0022] In the present invention according to claim 5, a plate-shaped substrate coated with an antifouling coating film is housed in a case, and a test fluid is passed through the case by a passing means, so that the test fluid passes along the surface of the substrate (the test fluid is passed parallel to the plate material). The state of the antifouling coating film on the substrate after the test fluid has passed through is evaluated by an evaluation means. and, The plate-shaped substrate coated with the antifouling coating is placed in a case, and the case is installed in a location where the test fluid flows (such as an existing cooling water intake). By passing the test fluid through the case, the test fluid flows along the surface of the substrate (the test fluid flows parallel to the plate material). In addition, a plurality of cases are accommodated in parallel in the flow container, and the outflow area of ​​the test fluid at the outlet of each case is changed by a flow rate adjusting means, which allows the flow rate of the test fluid to be adjusted and the effect of the flow rate of the test fluid to be evaluated.

[0023] This allows the performance of an antifouling coating film applied to a substrate to be evaluated while exposed to an actual flow of a fluid, for example a cooling fluid.

[0026] Also, Claim 6 The performance evaluation system for an antifouling coating film of the present invention relates to Claim 5 In the antifouling coating film performance evaluation system described in the above, the flow rate adjusting means is characterized in that it is capable of changing the outflow area independently for each of the cases. The test fluid supplied by the flow means is preferably seawater. The circulation means preferably has a drug supply means for mixing a drug into the test fluid.

[0027] In the present invention according to claim 6, the outflow area of ​​the case is changed individually at the outlet portion of the test fluid, and the flow rate of the test fluid can be adjusted for each case.

[0028] By applying an antifouling coating film to only one of the opposing surfaces of the multiple substrates housed in the case, the adhesion evaluation function of the evaluation means makes it possible to compare the adhesion state of organisms on each opposing surface between the surface coated with the antifouling coating film and the surface not coated with the antifouling coating film. Based on the results of this comparison, a comparison can be made between the surface coated with the antifouling coating film and the surface not coated with the antifouling coating film, regardless of the flow rate of the inflowing test fluid or the uneven distribution of organisms contained in the test fluid. Effect of the Invention

[0029] The antifouling coating performance evaluation system of the present invention makes it possible to evaluate the performance of an antifouling coating applied to a plate material while exposed to an actual flow of a fluid, for example, cooling water. [Brief description of the drawings]

[0030] [Figure 1] FIG. 1 is a conceptual diagram illustrating the overall configuration of a system for evaluating the performance of an antifouling coating film according to a first embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] 1 is a graph showing the relationship between coating thickness and water supply period. [Figure 4] FIG. [Diagram 5] 1 is a graph showing the relationship between the amount of biofouling and flow velocity. [Figure 6]FIG. 2 is a schematic diagram illustrating an example of the arrangement of a base material. [Figure 7] 1 is a graph illustrating the distribution of adhesion amount and adhesion rate. [Figure 8] FIG. 1 is a conceptual diagram illustrating the overall configuration of a performance evaluation system for an antifouling coating film according to a second embodiment of the present invention. [Figure 9] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] A first embodiment of the present invention will be described with reference to FIGS.

[0032] FIG. 1 shows a block diagram explaining the overall configuration of the antifouling coating film performance evaluation system according to the first embodiment of the present invention, FIG. 2(a) shows the concept of the water supply condition when seawater is supplied, FIG. 2(b) shows the concept of the water supply condition when seawater and a chemical are supplied, and FIG. 3 shows a graph showing the relationship between coating film thickness and water supply period (months).

[0033] As shown in Fig. 1, a plate-shaped substrate (constituent member of the flow path) 1 to which an antifouling coating film is applied is housed in a case 2. The substrate 1 is, for example, made of concrete that constitutes the flow path, or a plate material with the surface covered with a member (concrete or the like) that constitutes the flow path.

[0034] For example, multiple substrates 1 are housed in parallel in the case 2, with the plate surfaces arranged along the vertical direction. A fluid inlet channel 3 is provided in the upper part of the case 2, and a fluid outlet channel 4 is provided in the lower part of the case 2 (distribution means). A test fluid is supplied from the fluid inlet channel 3 to the case 2 and discharged from the fluid outlet channel 4, whereby the test fluid flows in a direction along the surface of the substrate 1 (vertical direction).

[0035] The substrate 1 is provided with an evaluation means 5 for evaluating the state of the antifouling coating film after the test fluid has passed through it. The evaluation means 5 is provided with an adhesion evaluation function 6 for evaluating the state of change over time in the thickness of the antifouling coating film and the state of attached organisms (the specific contents will be described later).

[0036] A seawater tank 7 is provided in the fluid inlet 3, and seawater is supplied to the seawater tank 7 from a water intake 8. A purification device 9 is provided in the fluid outlet 4, and the seawater that has flowed along the substrate 1 is sent to the purification device 9, purified, and then discharged into the sea.

[0037] In other words, the test fluid is configured assuming, for example, seawater (cooling water) for cooling a cooling means such as a condenser. Assumed fluids include cooling fluids for transformers, cooling fluids for cooling the rotating shafts of rotors such as turbines, and fluids flowing through water conduits and hydraulic pipelines.

[0038] A chemical supplying means 11 is connected to the fluid inlet passage 3, and chlorine is supplied as an oxidizing chemical from the chemical supplying means 11. An on-off valve 12 is provided between the chemical supplying means 11 and the fluid inlet passage 3, and the chemical is selectively supplied to the seawater in the fluid inlet passage 3 by controlling the on-off valve 12.

[0039] In the state shown in Fig. 2(a), only seawater flows, and the on-off valve 12 is closed. In the state shown in Fig. 2(b), a mixture of seawater and chemical flows, and the on-off valve 12 is opened.

[0040] By injecting (adding) a chemical (chlorine), for example, it is possible to prepare seawater mixed with a chemical (chlorine as an oxidizing chemical) to inhibit the attachment and proliferation of marine organisms inside a waterway, and then to evaluate the condition of the antifouling coating film when the seawater mixed with the chemical is circulated.

[0041] By not adding any chemicals (chlorine), it is possible to evaluate the condition of the antifouling coating film when seawater is circulated (when only seawater is circulated) without any chemicals (chlorine as an oxidizing agent) mixed in to inhibit the attachment and proliferation of marine organisms inside the waterway.

[0042] As shown in Figure 3, the thickness of the antifouling coating film decreases over time (months) for the hydrolyzed coating film with added chemicals (A: ●, B: ■) and the hydrolyzed coating film without added chemicals (A: ◯, B: □). When chemicals are added, the film thickness decreases more than when only seawater is present.

[0043] Therefore, it is possible to evaluate the change in film thickness between when an agent is added and when no agent is added (when only seawater is present), and to evaluate the difference in film thickness between when an agent is added and when no agent is added (when only seawater is present). For multiple substrates 1, the state of organisms adhering to the antifouling coating film after seawater has flowed through it is evaluated by the adhesion evaluation function 6.

[0044] A specific example of the storage state of the case 2 will be described with reference to Figs.

[0045] FIG. 4 shows a schematic configuration of an embodiment in which a plurality of cases 2 are accommodated in a flow container, and FIG. 5 shows a graph showing the relationship between the amount of attached organisms and the flow rate.

[0046] As shown in Fig. 4, a square cylindrical flow container 13 is provided to house the cases 2. The flow container 13 houses a plurality of cases 2 (three in the illustrated example) in the flow direction (up and down direction) of the test fluid, which is the axial direction of the tube. The inlet of each case 2 for the test fluid is provided with a blocking plate 14 as a flow rate adjusting means for changing the inflow area (changing the flow area) of the test fluid.

[0047] That is, two blocking plates 14 are provided at the inlet of the upstream (top) case 2, one blocking plate 14 is provided at the inlet of the middle case 2, and no blocking plate 14 is provided at the inlet of the bottom case 2. This makes the flow speed of the test fluid in the case 2 slower from the upstream (upper) to the downstream (lower) in the flow direction.

[0048] Therefore, at the inlet of the test fluid in each case 2, the inflow area of ​​the test fluid is changed by the blocking plate 14, and the flow rate of the test fluid can be adjusted for each case 2 under the same water supply environment, making it possible to evaluate the effect of the flow rate of the test fluid.

[0049] It is also possible to provide a blocking plate 14 at the outlet of the case 2 for the test fluid, and to change the flow area of ​​the surface intersecting the flow direction of the test fluid.

[0050] In the above embodiment, since a plurality of cases 2 are accommodated in the vertical direction of the flow container 13, it is possible to compare the influence of adhesion of organisms between the upstream side and the downstream side. That is, it is possible to compare the state of adhesion of organisms on the substrate 1 immediately after the test fluid has flowed and on the substrate 1 through which the test fluid has already flowed through the substrate 1. In addition, since a plurality of cases 2 are accommodated in the vertical direction of the flow container 13, organisms, contaminants, and the like do not remain in the plurality of cases 2.

[0051] FIG. 5 shows the relationship between the flow rate of the test fluid and the amount of attached organisms.

[0052] The adhesion amount shown in the figure is a relative value to unpainted (●), with silicone-type paints indicated with □, antifouling type with △, and hydrolysis type with ○. As shown in the figure, for example, at flow velocities of less than 0.5 m / s, hydrolysis type ○ and antifouling type △ paints are preferred, at flow velocities of 0.5 m / s to less than 1.0 m / s, hydrolysis type ○ paints are preferred, at flow velocities of 1.0 m / s to less than 2.0 m / s, silicone type □ paints are preferred, and at flow velocities of 2.0 m / s or more, it can be seen that the application of an antifouling coating is not necessary.

[0053] Therefore, by comparing the amount of attached organisms against the flow speed of the test fluid, it is possible to simultaneously compare the effectiveness of multiple antifouling agents at different flow speeds, making it possible to select the optimal paint type to suit the flow speed in the flow channel.

[0054] Another specific example of the arrangement of the base material 1 will be described with reference to FIGS.

[0055] FIG. 6 shows a schematic diagram illustrating an example of the arrangement of a substrate with a surface coated with an antifouling agent facing a surface without the antifouling agent, FIG. 7(a) shows a graph illustrating the distribution of the adhesion amount, and FIG. 7(b) shows a graph illustrating the distribution of the adhesion rate.

[0056] As shown in Fig. 6, five substrates 1 are housed in the case 2, and only one of the opposing surfaces of the substrates 1 in the opposing parts (1), (2), (3), and (4) is coated with the antifouling coating film M, and the other surface is not coated with the antifouling coating film M. The adhesion evaluation function 6 (see Fig. 1) of the evaluation means 5 (see Fig. 1) compares the adhesion state of organisms on the surface coated with the antifouling coating film M and the surface not coated with the antifouling coating film M after the test fluid has flowed through each of the opposing surfaces of the opposing parts (1), (2), (3), and (4), thereby evaluating the state of organisms adhering to the antifouling coating film M.

[0057] As shown in FIG. 7(a), for each of the opposing surfaces of the opposing parts (1), (2), (3), and (4), the adhesion amount on the surface on which the antifouling coating film M is applied (shown as an open bar graph) is compared with the adhesion amount on the surface on which the antifouling coating film M is not applied (shown as a hatched bar graph).

[0058] For example, although there is a difference in the absolute amount of adhesion between each of the opposing portions (1), (2), (3), and (4), the amount of organisms attached to the surface to which the antifouling coating film M is applied is evaluated relative to the amount of organisms attached to the surface to which the antifouling coating film M is not applied, and the adhesion status of organisms attached to the antifouling coating film M is evaluated for each of the opposing portions (1), (2), (3), and (4).

[0059] In other words, the state of organisms adhering to the antifouling coating film M is evaluated by comparing the amount of organisms attached to a surface coated with the antifouling coating film M with a surface not coated with the antifouling coating film M.

[0060] Then, as shown in Fig. 7(b), the ratio of organisms attached to the surface coated with the antifouling coating film M and the surface not coated with the antifouling coating film M is evaluated for each of the opposing surfaces of the opposing parts (1), (2), (3), and (4). That is, although the absolute amounts of the attached amounts are different, it is evaluated that the ratios of the attached organisms are approximately the same (for example, 50% or less).

[0061] This makes it possible to compare the adhesion of organisms on each of the opposing surfaces at multiple locations, and makes it possible to compare a surface coated with the antifouling coating film M with a surface not coated with it, regardless of the flow rate of the inflowing test fluid or the uneven distribution of organisms contained in the test fluid. By comparing a surface coated with the antifouling coating film M with a surface not coated with it, it is possible to evaluate the effectiveness of the antifouling coating film M while reducing the effects of the flow rate of the inflowing test fluid and the uneven distribution of organisms contained in the test fluid.

[0062] Therefore, it becomes possible to evaluate the performance of the antifouling coating film applied to the substrate 1 (plate material) in a state where it is exposed to an actual flow of seawater, which is cooling water.

[0063] A second embodiment of the present invention will be described with reference to FIGS.

[0064] FIG. 8 shows a block diagram explaining the overall configuration of a system for evaluating the performance of an antifouling coating film according to a second embodiment of the present invention, and FIG. 9 shows a schematic configuration of the case installed at the seawater intake of a cooling device, where the test fluid flows.

[0065] 9, a plurality of substrates 1 are housed in cases 21, which are housed in a flow container 22 (installation device 20). The flow container 22 is installed, for example, at the seawater intake of a cooling device in a power plant, and a portion of the seawater taken into the intake flows through the flow container 22 as a test fluid. A plurality of cases 21 are housed in the flow container 22 in a direction intersecting the flow direction of the seawater, and seawater flows through the cases 21 along the surface of the substrate 1, thereby forming a flow means.

[0066] As shown in Fig. 8, the substrate 1 after the seawater has flowed therethrough is evaluated by the evaluation means 23. That is, the evaluation means 23 has an adhesion evaluation function 24 for evaluating the state of organisms adhering to the antifouling coating film of the substrate 1 after the seawater has flowed therethrough.

[0067] The plate-shaped substrate 1 coated with the antifouling coating film is housed in a case 21, and the case 21 (flow container 22) is installed at an existing cooling water intake, so that seawater flows through the case 21 and along the surface of the substrate 1 (seawater flows parallel to the substrate 1). This makes it possible to evaluate the performance of the antifouling coating film coated on the substrate 1 in a state exposed to an actual seawater flow.

[0068] 8 and 9, the seawater outlet of each of the cases 21 housed in the flow container 22 is provided with a movable fin 25 as a flow rate adjusting means for changing the outflow area of ​​the seawater, and the movable fin 25 is operated independently, for example, by an instruction from the evaluation means 23. By individually operating the movable fins 25, the outflow area of ​​the case 21 is changed individually, and the flow rate of the seawater can be adjusted for each case 21.

[0069] That is, as shown by the white arrow in Figure 9, the flow speed can be adjusted to any speed, such as normal speed, fast speed, slow speed, or very slow speed, and the effect of the seawater flow speed can be evaluated.

[0070] The performance of the antifouling coating film applied to the substrate 1 can be evaluated in the same manner as in Example 1, by evaluating the thickness of the coating film, the amount of attached organisms, etc. Also, the state of attachment of organisms (amount of attachment, attachment ratio) can be compared between the surface coated with the antifouling coating film and the surface not coated with the antifouling coating film, which are opposed to each other on the substrate 1, and a comparison can be made between the surface coated with the antifouling coating film and the surface not coated with the antifouling coating film, regardless of the flow velocity of seawater when the flow velocity is not adjusted and the uneven distribution of organisms contained in seawater.

[0071] In the above embodiment, movable fins 25 are provided at the seawater outlet of case 21 to change the outflow area of ​​seawater, but it is also possible to provide movable fins 25 at the seawater inlet of case 21 to change the inflow area of ​​seawater.

[0072] Therefore, it becomes possible to evaluate on-site the performance of the antifouling coating film applied to the substrate 1 (plate material) in a location where an actual flow of seawater, which serves as cooling water, occurs and in a state where the substrate is exposed to the actual flow.

[0073] In the above-mentioned embodiment, the evaluation means 5, 25 may be a device for measuring the film thickness, etc., or a computer for evaluating the state of the antifouling coating film as exemplified based on the measuring device. [Industrial Applicability]

[0074] The present invention can be utilized in the industrial field of a performance evaluation system for an antifouling coating film applied to a component of a flow path through which a cooling fluid flows. [Explanation of symbols]

[0075] 1 Base material 2. 21 cases 3 Fluid inflow path 4 Fluid outflow path 5, 23 Evaluation methods 6, 24 Adhesion evaluation function 7. Seawater Tank 8. Water Intake 9 Purification Equipment 11 Drug delivery means 13, 22 Distribution containers 20 Installation equipment 25 Movable fin

Claims

1. A performance evaluation system for an antifouling coating film applied to a component of a flow path through which a fluid flows, comprising: A plate-shaped substrate to which an antifouling coating film is applied; A case that accommodates the plate-shaped base material; A flow means for flowing a test fluid into the case along a surface of the substrate; an evaluation means for evaluating a state of the antifouling coating film of the substrate after the test fluid has flowed therethrough; A plurality of substrates are housed in the case, the evaluation means has an adhesion evaluation function for evaluating the state of organisms adhering to the antifouling coating film after the test fluid has flowed through the antifouling coating film, A flow container that contains the case, A plurality of the cases are accommodated in the flow container in the flow direction of the test fluid, Each of the cases is provided with a flow rate adjusting means for changing the flow area of ​​the test fluid. A performance evaluation system for antifouling coating films.

2. In the performance evaluation system for the antifouling coating film according to claim 1, the antifouling coating film is applied to only one of the opposing surfaces of the plurality of substrates contained in the case; The adhesion evaluation function of the evaluation means is The state of organisms adhering to the antifouling coating film is evaluated by comparing the state of organisms adhering to the surface coated with the antifouling coating film and the surface not coated with the antifouling coating film after the test fluid has flowed through each of the opposing surfaces. A performance evaluation system for antifouling coating films.

3. In the performance evaluation system for the antifouling coating film according to claim 1 or claim 2, The test fluid supplied by the flow means is seawater. A performance evaluation system for antifouling coating films.

4. A performance evaluation system for an antifouling coating film according to any one of claims 1 to 3, The distribution means is A chemical supply means for mixing a chemical into the test fluid is provided. A performance evaluation system for antifouling coating films.

5. A performance evaluation system for an antifouling coating film applied to a component of a flow path through which a fluid flows, comprising: A plate-shaped substrate to which an antifouling coating film is applied; A case that accommodates the plate-shaped base material; A flow means for flowing a test fluid into the case along a surface of the substrate; an evaluation means for evaluating a state of the antifouling coating film of the substrate after the test fluid has flowed therethrough; The case is installed in a location where the test fluid flows, The flow means is configured by flowing the test fluid into the case along the surface of the base material, the evaluation means has an adhesion evaluation function for evaluating the state of organisms adhering to the antifouling coating film after the test fluid has flowed through the antifouling coating film, A flow container that contains the case, The flow container accommodates a plurality of the cases in a direction intersecting a flow direction of the test fluid, The outlet of the test fluid of each of the cases is provided with a flow rate adjusting means for changing the outflow area of ​​the test fluid. A performance evaluation system for antifouling coating films.

6. In the performance evaluation system for the antifouling coating film according to claim 5, The flow rate adjusting means is adapted to change the outflow area independently for each of the cases. A performance evaluation system for antifouling coating films.

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