JP6356542B2 - Algae promoting device and method for confirming influence of condensed water - Google Patents

Description

  The present invention relates to an algae promoting device that promotes algae in a test specimen, and a method for confirming the influence of dew condensation water on the specimen.

  As a technology in such a field, there is Patent Document 1 below. Patent Document 1 includes a gantry on which a wall surface specimen is installed in a vertical or inclined state, and a sprinkling means for sprinkling nutrient water. An outer wall soil test apparatus is described which promotes the occurrence of water.

JP 2002-022647 A

  In the above-described conventional apparatus, nutrient water is sprinkled and flowed down by the sprinkling means, and thus water supply and wastewater treatment facilities are required. For this reason, there are problems that the apparatus becomes large and costs increase, and that the degree of freedom of installation of the apparatus is low. In addition, even wall test specimens that do not algae in a real environment have a problem of algae when spraying nutrient water.

  An object of this invention is to provide the algae acceleration | stimulation apparatus with a simpler structure and the high freedom degree of an installation position, and the confirmation method of the influence of dew condensation water using this apparatus.

The algae promoting device of the present invention comprises a container made of a highly heat-conductive material, and a test body having a back surface adhered to the outer surface of the container, and the back surface of the test body by cooling water or cold air in the container Is cooled, and the surface temperature of the test body is set to be equal to or lower than the dew point temperature, thereby causing a dew condensation phenomenon on the surface of the test body and promoting the generation of algae in the test body.

  According to this algae promoting device, dew condensation water is generated on the test specimen by the dew condensation phenomenon, and the generation of algae in the test specimen is promoted by this dew condensation water. Therefore, watering or the like conventionally performed is unnecessary, and an algae promoting device with a simpler configuration and a high degree of freedom in installation position is realized. Moreover, since only the water among the growth promoting factors of the algae existing in the actual environment is supplied as condensed water to promote the growth, the resistance of the test specimen to the original algae can be evaluated.

The test body has a plate-like substrate and a coating film applied to the surface of the substrate, and the dew condensation phenomenon occurs on the coating film surface of the test body . In this case, the test specimen has a substrate and a coating film, and a dew condensation phenomenon occurs on the coating film surface of the test specimen, so that an algae state corresponding to the difference in the coating film or the substrate is realized. It is possible to easily test the ease of algae or the difficulty of algae.

In the above apparatus, the interior of the container, the cooling water is stored. In this case, since the container is made of a highly thermally conductive material, the back surface of the specimen is easily cooled by the cooling water in the container through the wall portion of the container. By cooling the back surface of the test body, condensed water can be generated in the test body. Thus, the algae promoting device is realized with a simple configuration of storing the cooling water in the container.

In the above apparatus, the interior of the container, cold air flows. In this case, since the container is made of a highly heat conductive material, the back surface of the test body is easily cooled by the cool air in the container via the wall portion of the container. By cooling the back surface of the test body, condensed water can be generated in the test body. In this way, the algae promoting device is realized with a simple configuration in which cold air is circulated through the container.

The method for confirming the influence of dew condensation water according to the present invention includes a step of sticking the back surface of the test body to the outer surface of a container made of a high thermal conductivity material, and storing cooling water or circulating cold air inside the container. And cooling the back surface of the test specimen with cooling water or cold air in the container, and causing the surface temperature of the test specimen to be below the dew point temperature to cause a dew condensation phenomenon on the surface of the test specimen. It is characterized by promoting the generation of algae.

  According to this method for confirming the influence of dew condensation water, dew condensation water is generated on the test specimen due to the dew condensation phenomenon, and this dew condensation water promotes the generation of algae in the test specimen. Therefore, the conventional sprinkling is unnecessary, and an algae promoting device with a simpler configuration and a high degree of freedom in the installation position is realized. Using this device, the influence of condensed water on the specimen is easy. Can be confirmed.

Specimen, possess a coating film applied to a plate-shaped substrate and the surface of the substrate, to generate dew condensation on the coating film surface of the test specimen. In this case, the test specimen has a substrate and a coating film, and a dew condensation phenomenon occurs on the coating film surface of the test specimen, so that an algae state corresponding to the difference in the coating film or the substrate is realized. It is possible to easily test the ease of algae or the difficulty of algae. In particular, the influence of condensed water can be easily confirmed for a plurality of test specimens.

The above method, the water level is compared visually substantially a step of storing the cooling water to the container such that the intermediate position, and a following region and the water level or more regions water level in the specimen after a predetermined time elapses specimens And a process. In this case, since the container is made of a highly heat conductive material, the region below the water level is easily cooled by the cooling water in the container through the wall portion of the container. By cooling the area below the water level in the back surface of the test body, dew condensation water can be generated in the area below the water level of the test body. Thus, the influence of the dew condensation water with respect to a test body can be confirmed by the simple method of storing cooling water in a container. In particular, dew condensation water is likely to be generated in a region below the water level of the test specimen, and dew condensation water is unlikely to be generated in a region above the water level of the test specimen. Therefore, a different dew condensation phenomenon can be caused for each region on one test body, and the influence of the dew condensation water can be efficiently tested.

In the above method, a plurality of specimens with different materials or different layer structure by sticking to the outer surface of the container, comparing visually the surface of a plurality of specimens. In this case, since the container is made of a highly heat-conductive material, the back surface of the test body is easily cooled by the cooling water or the cold air in the container through the wall portion of the container. By cooling the back surface of the test body, condensed water can be generated in the test body. Thus, the influence of the dew condensation water on the test specimen can be confirmed by a simple method of storing the cooling water in the container or circulating the cold air.

  ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of an installation position is also high with a simple structure, and the algae promotion apparatus according to the actual condition is implement | achieved. Moreover, the influence of the dew condensation water with respect to a test body can be easily confirmed using this apparatus.

It is a perspective view of the algae promotion apparatus concerning a 1st embodiment of the present invention. It is sectional drawing along the II-II line of FIG. (A) And (b) is a figure which shows the example of an algae state at the time of performing an algae test using a different test body. It is a perspective view of the algae acceleration | stimulation apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the example of an algae state at the time of performing an algae test using two types of test bodies. It is a perspective view which shows the test body periphery part of the algae promotion apparatus which concerns on the modification of 1st Embodiment. It is sectional drawing of the test body periphery part of the algae acceleration | stimulation apparatus which concerns on the other modification of 1st Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted.

  First, the algae promoting device 1 will be described. As shown in FIG. 1, the algae promoting device 1 includes a rectangular parallelepiped container 2 and cooling water 3 stored in the container 2. The container 2 is made of a highly heat conductive material, and its upper surface is opened. The container 2 may be made of glass or metal such as iron, copper or aluminum. A thin plate-like test body 4 is attached to the outer surface 2b of the wall 2a constituting the side surface of the container 2. The water level 5 of the cooling water 3 is stored in the container 2 so as to be at a substantially intermediate position in the vertical direction of the test body 4. The container 2 includes a water supply port 2c and a water supply pipe 15 for supplying water, and a drain port 2d and a drain pipe 16 for discharging excess water and keeping the water level constant.

  As shown in FIG. 2, the test body 4 includes a thin plate-like substrate 6 and a coating film 7 applied to the surface of the substrate 6. A back surface 6 c of the substrate 6 (that is, the back surface 4 c of the test body 4) is attached to the outer surface 2 b of the container 2. The substrate 6 of the test body 4 may be made of metal or resin. The board | substrate 6 consists of material used for the wall surface of a building, for example. Although the coating film 7 is not specifically limited, For example, it consists of coating materials, such as an acrylic emulsion type | system | group, an acrylic solvent type | system | group, a colloidal silica type | system | group, an organic inorganic hybrid type | system | group, a photocatalyst type | system | group. In other words, the coating film 7 consists of the coating material used for the wall surface of a building. The test body 4 having such a two-layer configuration is attached to the outer surface 2b of the container 2 with an adhesive, for example. The layer configuration of the test body 4 is not limited to the above configuration.

  In the algae promoting device 1, since the water level 5 of the cooling water 3 is set so as to be a substantially intermediate position of the test body 4, the test body 4 has a lower surface (coating surface) that is an area below the water level 5. 4a and an upper surface (coating surface) 4b which is a region having a water level of 5 or higher.

  The cooling water 3 in the container 2 is set to a temperature at which the temperature of the lower surface 4a of the test body 4 can be cooled below the dew point temperature. The cooling water 3 may be provided with a cooler so that the cold temperature can be maintained, or may not be provided with a cooler. As the cooling water 3, for example, well water may be used. The cooling water 3 may be stored with the same water, may be continuously supplied with water so that the stored water is replaced, and the supply time and supply amount of water can be controlled using a solenoid valve and a timer. You may do it. Due to the cooling water 3, a dew condensation phenomenon occurs on the lower surface 4 a of the test body 4, and the dew condensation water 8 adheres as, for example, water droplets. In other words, the algae promoting device 1 uses the dew condensation phenomenon on the specimen 4.

  As shown in FIGS. 1 and 2, in the algae promoting device 1, the test body 4 has a lower part cooled by the cooling water 3 and an upper part not directly cooled by the cooling water 3. Condensed water 8 is easily formed on the lower surface 4a, and condensed water 8 is difficult to be formed on the upper surface 4b. Condensed water 8 is uniformly formed on the lower surface 4a.

  Next, with reference to FIG. 3, the confirmation method of the influence of condensed water is demonstrated. In the confirmation method of the influence of the dew condensation water using the algae promoting device 1, first, the back surface 4 c of the test body 4 is stuck on the outer surface 2 b of the container 2. Next, the cooling water 3 is stored in the container 2 so that the water level 5 is approximately the middle position of the test body 4. Next, after a predetermined time has elapsed since the cooling water 3 was stored, the lower surface 4a and the upper surface 4b of the test body 4 are visually compared. In addition, the order of the process of sticking the test body 4 and the process of storing the cooling water 3 may be reverse to the above order.

  Fig.3 (a) and FIG.3 (b) are figures which show the example of an algae state in the case of performing an algae test using different test bodies 4A and 4B. The test body 4A and the test body 4B may differ in the material, composition, component, or the like of the substrate 6, and the paint or coating thickness in the coating film 7 may be different. As shown in FIG. 3A, algae A is generated on the lower surface 4a of the test body 4A so as to cover most of the condensed water 8. Almost no algae A are generated on the upper surface 4b of the test body 4A. On the other hand, as shown in FIG. 3B, algae A is slightly generated on the lower surface 4a of the test body 4B. Almost no algae A are generated on the upper surface 4b of the test body 4B. From the above results, it can be seen that the specimen 4B is less likely to generate the algae A than the specimen 4A.

  In this way, by causing a dew condensation phenomenon on the lower surface 4a of the test body 4A and the test body 4B, algae in the test body 4A and the test body 4B is promoted. And the influence of the dew condensation water with respect to the test bodies 4A and 4B can be confirmed by performing visual confirmation as shown to Fig.3 (a) and (b).

  According to the algae promoting device 1 and the method for confirming the influence of condensed water using the algae promoting device 1, the condensed water 8 is generated on the test body 4 due to the dew condensation phenomenon. Generation of algae A is promoted. Therefore, the conventionally performed watering etc. are unnecessary, the algae promotion apparatus 1 with a simpler structure and a high degree of freedom of the installation position is realized, and the test body 4 ( For example, the influence of the dew condensation water 8 on the test bodies 4A, 4B) can be easily confirmed.

  Moreover, since the test body 4 has the board | substrate 6 and the coating film 7, and a dew condensation phenomenon generate | occur | produces in the lower surface 4a which is a coating-film surface of the test body 4, the difference (for example, paint or application thickness of the coating film 7) Etc.) or a difference in the substrate 6 (for example, material or composition) is realized, and the test sample 4 can be easily tested for ease of algae generation or difficulty of algae generation. In particular, the influence of the dew condensation water 8 can be easily confirmed for a plurality of test bodies 4 (for example, the test bodies 4A and 4B).

  Moreover, since the container 2 is comprised with a high heat conductive material, the area | region below the water level 5 among the back surfaces 4c of the test body 4 is easily cooled with the cooling water 3 in the container 2 via the wall part 2a of the container 2. . By cooling the region below the water level 5 in the back surface 4 c of the test body 4, condensed water 8 can be generated on the lower surface 4 a of the test body 4. Thus, the influence of the dew condensation water 8 on the test body 4 can be confirmed with a simple configuration and method of storing the cooling water 3 in the container 2. In particular, the dew condensation water 8 is likely to be generated on the lower surface 4a which is a region below the water level 5 of the test body 4, and the dew condensation water 8 is difficult to be generated on the upper surface 4b which is a region above the water level 5 of the test body 4. Therefore, a different dew condensation phenomenon can be generated for each region on one test body 4, and the influence of the dew condensation water 8 can be efficiently tested. A plurality of test bodies 4 can be attached to the algae promoting device 1. In that case, the algae promotion in the different test bodies 4 can be performed simultaneously, and the influence of the dew condensation water 8 on the different test bodies 4 can be confirmed simultaneously.

  With reference to FIG. 4, the algae promoting apparatus 10 according to the second embodiment will be described. The difference between the algae promoting device 10 and the algae promoting device 1 of the first embodiment is that, instead of the container 2 whose upper surface is opened, a metal container 2A is provided, and cold air is fed into the container 2A. It is the point provided with the cold air generator 12 for this. The container 2A may be made of a highly heat conductive material, and may be made of, for example, glass. The cold air generating device 12 includes, for example, an air cooling device and a blower.

  The container 2A is a container that has a wall 2a on six sides to form a closed space, and has one vent pipe 11 on one side surface and one exhaust on the other side surface. It has a tube 13. The cold air generator 12 distributes the cold air into the container 2 </ b> A through the vent pipe 11. The cool air stays in the container 2A for a predetermined time, cools the wall 2a, and is discharged from the container 2A through the exhaust pipe 13. The back surface 4c of the plurality of test bodies 4A and 4B can be attached to the outer surface 2b of the container 2A. Although FIG. 4 shows an example in which two test bodies 4A and 4B are attached, the number is not limited to two, and may be one or three or more.

  In the algae promoting device 10, cold air is circulated so that the temperature of the surface 4d of the test body 4 can be cooled below the dew point temperature. Thereby, since each of the test bodies 4A and 4B is cooled uniformly, the dew condensation water 8 is generated substantially uniformly on the surface 4d in each of the test bodies 4A and 4B.

  In the method for confirming the influence of the dew condensation water using the algae promoting device 10, the surface 4d of the plurality of test bodies 4 (for example, the test bodies 4A and 4B) is visually compared while circulating cool air in the container 2. . As a result, as shown in FIG. 5, for example, the algae A is generated on the surface 4d of the test body 4A so as to cover most of the condensed water 8, and the surface 4d of the test body 4B is slightly algae A. Will occur.

  Also by the algae promoting device 10 and the method for confirming the influence of condensed water using the algae promoting device 10, the same actions and effects as the algae promoting device 1 are exhibited. Moreover, the influence of the dew condensation water 8 with respect to the test body 4 (for example, test body 4A, 4B) can be confirmed with the simple structure and method of distribute | circulating cold air to the container 2A.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the algae promoting device 1, the water level 5 of the cooling water 3 is not limited to the intermediate position of the test body 4, and may be higher than the intermediate position of the test body 4. By setting the water level 5 above the test body 4, the entire test body 4 can be cooled, and the same effect as the algae promoting device 10 of the second embodiment can be obtained.

  Moreover, in the algae promoting apparatus 10, the cooling water 3 may be stored inside the container 2A. Also in this case, the same actions and effects as described above can be obtained.

  Moreover, in the algae promoting apparatus 1, the test body 4 is not limited to being attached to the wall 2a of the container 2A, and may be installed so as to constitute a part of the wall 2a of the container 2A. That is, as shown in FIG. 6, the container 2 </ b> A may have a configuration in which a notch 21 is provided in a part of the wall 2 a and the frame body 22 is fixed along the peripheral edge of the notch 21. In this case, the cutout portion 21 and the frame body 22 can have a shape along the side and lower side of the test body 4 (rectangular shape with the top opened). The frame body 22 is attached to the wall 2a so as to protrude to the outside of the container 2A, and has a groove into which the peripheral edge of the test body 4 is fitted. The test body 4 is slid downward, for example, and fitted into the groove of the frame body 22. Between the frame body 22 and the test body 4, a fixed water-stopping material 23 is interposed. The back surface of the test body 4 directly touches the cooling water stored in the container 2, and the surface of the test body 4 is exposed from the frame body 22. The test body 4 is pressed against the water stop material 23 by water pressure. Thereby, water stop is achieved between the surface of the test body 4 and the water stop material 23.

  According to said structure, since the test body 4 touches the cooling water 3 directly, dew condensation can be accelerated | stimulated more. Moreover, since the test body 4 is not adhered to the wall portion 2a, the adhesive strength is not reduced by the condensed water, and the test body 4 is not peeled off. Moreover, since the test body 4 can be installed or removed simply by sliding the test body 4 with respect to the frame body 22, the replacement work of the test body 4 is easy.

  In the configuration in which the notch portion 21 and the frame body 22 are provided in a part of the wall portion 2a, a fixed water-stopping material 24 is interposed between the wall portion 2a and the test body 4 as shown in FIG. You may employ | adopt the structure by which the flat bar 25 is arrange | positioned along the peripheral part of the body 4. FIG. In this case, even if the test body 4 is mechanically pressed against the water-stopping material 24 by a screw member (for example, a bolt 28 and a nut 27 provided on the outer surface side of the frame body 22) via the flat bar 25. Good. Even with such a configuration, water stoppage is achieved between the back surface of the test body 4 and the waterstop material 24, and the same effects as described above are exhibited.

  DESCRIPTION OF SYMBOLS 1,10 ... Algae promoting apparatus, 2 ... Container, 2a ... Wall part, 2b ... Outer surface, 3 ... Cooling water, 4 ... Test body, 4a ... Lower surface (area below a water level), 4b ... Upper surface (water level) 4c ... back side, 4d ... front side, 5 ... water level, 6 ... substrate, 7 ... coating film, 8 ... dew condensation water, A ... algae.

Claims (8)

A container made of a high thermal conductivity material;
A test body having a back surface adhered to the outer surface of the container,
In the test body, the back surface of the test body is cooled by cooling water or cold air in the container, and a dew phenomenon is generated on the surface of the test body by setting the surface temperature of the test body to a dew point temperature or less . An algae promoting device that promotes the generation of algae. The test body has a plate-like substrate and a coating film applied to the surface of the substrate,
The algae promoting device according to claim 1, wherein the dew condensation phenomenon occurs on the coating surface of the specimen. Inside the front Symbol vessel Hatsumo promoting device as claimed in claim 1 or 2, wherein the cooling water is stored. Inside the front Symbol vessel Hatsumo promoting device as claimed in claim 1 or 2, characterized in that the cold air flows. A process of adhering the back surface of the specimen to the outer surface of a container made of a high thermal conductivity material;
Storing cooling water inside the container or circulating cold air, and
The back surface of the test body is cooled with cooling water or cold air in the container, and a dew phenomenon is generated on the surface of the test body by setting the surface temperature of the test body to a dew point temperature or less . A method for confirming the influence of condensed water, characterized by promoting the occurrence. The specimen may possess a coating film applied to the surface of the substrate and a plate-like substrate, according to the dew condensation in claim 5, characterized in that to generate the coated surface of the test body How to check the influence of condensed water. A step of water-position storing said cooling water to said container substantially as an intermediate position of the test body,
A step of visually comparing the region below the water level and the region above the water level in the specimen after a predetermined time;
The confirmation method of the influence of the dew condensation water of Claim 6 characterized by the above-mentioned. A plurality of the specimens having different materials or different layer structure by sticking to the outer surface of the container, according to claim 5 or 6, wherein the contrasting visually surfaces of the said test body How to check the influence of condensed water.

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