Volatile organic compound management device, volatile organic compound management method, and program

Abstract

To provide a volatile organic compound management apparatus, a method, and a program for accurately calculating a spatial concentration of a volatile organic compound at a construction site where a plurality of members are being constructed.SOLUTION: In a TVOC management system including a construction site craftsman device, a manager device, and a TVOC management apparatus connected to a network, the TVOC management apparatus includes a building database 109 for storing an emission rate of a volatile organic compound from a member as a function of a ventilation period for the member, a construction date acquisition unit 101 for acquiring a construction date, a construction area acquisition unit 105 for acquiring a construction area, a ventilation information acquisition unit 102 for acquiring information on ventilation performed between the construction date and a concentration calculation date, and a ventilation period acquisition unit 103 for acquiring the ventilation period based on the ventilation information, an emission rate acquisition unit 104 for acquiring the emission rate of the volatile organic compound according to the ventilation period, and a space concentration calculation unit 106 for calculating the space concentration of the volatile organic compound.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a volatile organic compound management device, a volatile organic compound management method and a program, and in particular to calculation of spatial concentrations of volatile organic compounds at construction sites. [Background technology]

[0002] At construction sites for houses and other buildings, it is necessary to reduce the spatial concentration of volatile organic compounds that are generated from building materials and fixtures. Examples of volatile organic compounds whose spatial concentrations need to be controlled include formaldehyde and TVOCs (Total Volatile Organic Compounds). In general, TVOC concentrations are measured after the building is completed to ensure that they are below the target value.

[0003] However, if high TVOC concentrations are found after a building is completed, there is a possibility that handover of the building may be delayed due to the need for rework, ventilation, etc. For this reason, it would be desirable to be able to grasp TVOC concentrations at any time during construction, but measuring TVOC concentrations during construction is not realistic in terms of the time required and measurement accuracy.

[0004] In this regard, a method for obtaining spatial concentrations of volatile organic compounds without actual measurements is known in which the emission rate of volatile organic compounds from building materials is measured in advance by a chamber test, and this value is used to calculate an estimated or predicted TVOC concentration. Summary of the Invention [Problem to be solved by the invention]

[0005] At a construction site for a house or the like, multiple components are installed, such as building materials such as flooring and ceiling materials, and fixtures such as furniture and fittings, but these components are often installed on different dates. The TVOCs generated by each component gradually decrease according to the number of days that have passed since the date of installation and according to the ventilation conditions after installation. However, conventional technology does not take into account the date of installation or ventilation conditions for each component, and therefore it is not possible to accurately calculate estimated or predicted values ​​of TVOC concentrations.

[0006] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a volatile organic compound management device, a volatile organic compound management method, and a program that can accurately calculate the spatial concentration of volatile organic compounds such as formaldehyde and TVOC at a construction site where multiple components are installed. [Means for solving the problem]

[0007] (1) In order to solve the above problem, the volatile organic compound management device of the present invention is a volatile organic compound management device that manages the spatial concentration of volatile organic compounds at a construction site where a plurality of components are constructed, and includes an emission rate storage means for storing, for each of the components, the emission rate of the volatile organic compounds from the component as a function of the ventilation period for the component, a construction date acquisition means for acquiring the construction date for each of the components, a construction area acquisition means for acquiring the construction area for each of the components, ventilation information acquisition means for acquiring ventilation information regarding ventilation performed between the construction date and a given date for each of the components, a ventilation period acquisition means for acquiring the ventilation period based on the ventilation information for each of the components, an emission rate acquisition means for acquiring the emission rate corresponding to the ventilation period acquired by the ventilation period acquisition means for each of the components by referring to the diffusion rate storage means, and a spatial concentration calculation means for calculating the spatial concentration of the volatile organic compounds at the construction site on the given date based on the emission rate for each of the components, the construction area for each of the components, and the ventilation volume of the construction site on the given date.

[0008] (2) In the volatile organic compound management device described in (1), the construction date of each of the components may be a planned date obtained from construction plan data.

[0009] (3) In the volatile organic compound management device described in (1) or (2), the ventilation information for each of the components may be obtained from the construction plan data.

[0010] (4) In the volatile organic compound management device according to any one of (1) to (3), the construction date of each of the components may be an actual construction date acquired from work report data.

[0011] (5) In the volatile organic compound management device described in (4), the ventilation information of each of the components may be obtained from the work report data.

[0012] (6) In the volatile organic compound management device described in any one of (1) to (5), the ventilation information related to each of the components may include information on a curing period of the component.

[0013] (7) In a volatile organic compound management device described in any one of (1) to (6), the ventilation information for each of the components may include information on the number of days and ventilation volume for which the component is ventilated by the ventilation equipment from the construction date of the component to the given date.

[0014] (8) In the volatile organic compound management device described in any one of (1) to (7), the ventilation period acquisition means may acquire the ventilation period for each of the components based further on at least one of the temperature and humidity at the construction site from the construction date of the component to the given date.

[0015] (9) In the volatile organic compound management device described in any one of (1) to (8), the spatial concentration calculation means may calculate the spatial concentration of the volatile organic compound based on whether or not each of the components is exposed to the construction site.

[0016] (10) The volatile organic compound management method according to the present invention is a volatile organic compound management method for managing the spatial concentration of volatile organic compounds at a construction site where a plurality of components are constructed, and includes a construction date acquisition step for acquiring the construction date for each of the components, a construction area acquisition step for acquiring the construction area for each of the components, a ventilation information acquisition step for acquiring ventilation information regarding ventilation performed between the construction date and a given date for each of the components, a ventilation period acquisition step for acquiring a ventilation period based on the ventilation information for each of the components, a diffusion rate acquisition step for acquiring the diffusion rate corresponding to the ventilation period acquired by the ventilation period acquisition means for each of the components as a function of the ventilation period for each of the components, by referring to a diffusion rate storage means that stores the diffusion rate of the volatile organic compounds from the components as a function of the ventilation period for each of the components, and a spatial concentration calculation step for calculating the spatial concentration of the volatile organic compounds at the construction site on the given date based on the diffusion rate for each of the components, the construction area for each of the components, and the ventilation volume of the construction site on the given date.

[0017] (11) The program according to the present invention is a program that causes a computer to function as a volatile organic compound management device that manages the spatial concentration of volatile organic compounds at a construction site where a plurality of components are constructed, and causes the computer to function as a spatial concentration calculation means that calculates the spatial concentration of the volatile organic compounds at the construction site on the given date based on the diffusion rate storage means, the diffusion rate storage means, the construction area storage means, and the diffusion rate calculation means. The program causes the computer to function as a spatial concentration calculation means that calculates the spatial concentration of the volatile organic compounds at the construction site on the given date based on the diffusion rate storage means, the diffusion rate storage means, the diffusion rate storage means, and the diffusion rate calculation means. The program causes the computer to function as a spatial concentration calculation means that calculates the spatial concentration of the volatile organic compounds at the construction site on the given date based on the diffusion rate storage means, the diffusion rate storage means, the diffusion rate storage means, and the diffusion rate calculation means. Effect of the Invention

[0018] According to the present invention, it is possible to accurately calculate the spatial concentration of volatile organic compounds in a construction site where a plurality of components are installed. [Brief description of the drawings]

[0019] [Figure 1] 1 is an overall configuration diagram of a TVOC management system according to an embodiment of the present invention. [Diagram 2] FIG. 13 is a diagram showing an example of a TVOC display screen. [Diagram 3] FIG. 13 is a diagram illustrating an example of a work instruction. [Figure 4] FIG. 13 is a diagram illustrating an example of a work report. [Diagram 5] FIG. 2 is a functional block diagram of a TVOC management device. [Figure 6] FIG. 2 is a diagram showing the contents stored in a building database. [Figure 7] FIG. 13 is a diagram showing an example of test data. [Figure 8] FIG. 4 is a diagram showing an example of a diffusion rate function. [Figure 9] FIG. 11 is a diagram showing an example of construction schedule data. [Figure 10] FIG. 13 is a diagram showing an example of calculation of a ventilation period. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0021] Fig. 1 is an overall configuration diagram of a TVOC management system according to an embodiment of the present invention. As shown in the figure, the TVOC management system 10 includes a site worker device 14, an administrator device 16, and a TVOC management device 100, all connected to a communication network 12 such as the Internet. The TVOC management system 10 manages the spatial concentration of TVOCs at a construction site such as a house where multiple components are installed, such as building materials such as flooring and wall materials, or fixtures such as doors and shelves. In the following, a room in an ordinary house will be taken as an example of a construction site where the spatial concentration of TVOCs is managed.

[0022] The site worker device 14 is a computer including a CPU, a storage device, a communication device, a display, etc., and is used by a worker working at a construction site. The site worker device 14 creates daily work reports and uploads them to the TVOC management device 100, downloads work instructions uploaded to the TVOC management device 100 by the manager device 16, and displays them on the screen.

[0023] The manager's device 16 is also a computer including a CPU, a storage device, a communication device, a display, etc., and is used by a manager who manages the work of craftsmen at a construction site. The manager's device 16 displays a TVOC display screen generated by the TVOC management device 100, allows the manager to create work instructions for the craftsmen, and uploads the created work instructions to the TVOC management device 100.

[0024] The TVOC management device 100 is also a computer including a CPU, a storage device, a communication device, a display, and the like. The TVOC management device 100 calculates estimated values ​​and predicted values ​​of TVOC concentrations at a construction site, and generates them as a TVOC display screen. The generated TVOC display screen is mainly provided to the manager's device 16. The manager looks at the TVOC display screen displayed on the manager's device 16, creates work instructions including work items that take TVOC into consideration, and transmits them to the TVOC management device 100. The TVOC management device 100 transfers these work instructions to the site worker's device 14. The TVOC management device 100 also receives daily work reports from the site worker's device 14.

[0025] FIG. 2 is a diagram showing an example of a TVOC display screen displayed on the manager device 16. As shown in the figure, the TVOC display screen mainly displays a graph showing the transition of TVOC concentration at a construction site (a room in a house). The horizontal axis of the graph indicates the number of days that have passed since the start date of interior construction work, and the vertical axis indicates the TVOC concentration. The figure shows concentration bars D1 to D11, DF indicating the daily TVOC concentration from the start date of construction to the handover date. Here, the concentration bar Dn indicates the TVOC concentration on the nth day from the start of construction (n=1 to 11). In addition, the concentration bar DF ​​indicates the TVOC concentration on the handover date. Below each concentration bar, information on the craftsman in charge of the construction on that day is displayed.

[0026] A horizontal division line L1 is drawn approximately in the center of the vertical axis, and information on indoor TVOC concentrations is shown above this horizontal division line L1, while information on TVOC concentrations inside walls is shown below the horizontal division line L1. The spatial concentration of TVOCs at a construction site is represented by the height of the parts of the concentration bars Dn and DF above the horizontal division line L1.

[0027] For example, on the first day after construction begins, the structural frame and underfloor materials are being constructed, and the TVOC concentration emitted from them is shown as concentration bar D1. The structural frame and underfloor materials are constructed exposed to the indoor space, and TVOCs are emitted from each of them. For this reason, concentration bar D1 includes the contribution from the structural frame and the contribution from the underfloor materials, both of which are located above the horizontal dividing line L1.

[0028] Above the horizontal dividing line L1, a reference line L3 indicating the target TVOC concentration is displayed. When the apex of the concentration bar Dn is above the reference line L3, an auxiliary concentration bar DAn (n=1,2,9,10,11) indicating the TVOC concentration inside the room when the windows at the construction site are open is displayed next to the concentration bar Dn. For example, the apex of the concentration bar D1 on the first day after construction begins is above the reference line L3, but next to it is displayed the auxiliary concentration bar DA1, and the apex of the auxiliary concentration bar DA1 is below the reference line L3. This shows that the TVOC concentration can be kept below the standard by opening the windows.

[0029] The TVOC concentration on the third day after construction began is shown in concentration bar D3, but on this day gypsum boards were being installed. Although gypsum boards themselves do not emit TVOCs, they cover the insulation and structural frame already installed, preventing them from being directly exposed to the indoor space. In this case, only the underfloor material is exposed to the indoor space and emitting TVOCs.

[0030] In this embodiment, the contribution of the structural body covered with gypsum board and the heat insulating material is represented by the part below the horizontal division line L1 in the concentration bar D3. The height of each of the contributing parts of the structural body and the heat insulating material is the same as the height (concentration contribution) assumed when they are directly exposed to the indoor space. Although the heat insulating material and the structural body are covered with gypsum board and are not directly exposed to the indoor space, they are considered to partially leak into the indoor space, and the wall inside contribution part W is included in the part above the horizontal division line L1 of the concentration bar D3. The height of the wall inside contribution part W is the height of the part below the horizontal division line L1 multiplied by a correction rate (10 to 80%). As a result, the contributing part of the floor underlayment and the wall inside contribution part W are arranged above the horizontal division line L1.

[0031] The horizontal axis shows a vertical dividing line L2 indicating the present time, and the left side of the vertical dividing line L2 shows the trends in estimated past TVOC concentrations, while the right side shows the trends in predicted future TVOC concentrations.

[0032] Construction is scheduled to be completed on the 11th day after the start of construction, but on that day the TVOC concentration will not fall below the target TVOC concentration without ventilation. Therefore, in this embodiment, the number of days until the indoor TVOC concentration falls below the target TVOC concentration is calculated and displayed on the TVOC display screen (symbol X). Therefore, the date obtained by adding the number of days indicated by symbol X from the completion date is the delivery date.

[0033] The manager creates work instructions for the craftsman in charge while looking at the TVOC display screen displayed on the manager's device 16, and uploads them to the TVOC management device 100. The work instructions are downloaded by the on-site craftsman device 14 and displayed on the on-site craftsman device 14. FIG. 3 is a diagram showing an example of work instructions displayed on the on-site craftsman device 14. As shown in the figure, the work instructions include a construction drawing 20 of the construction site, and the construction drawing 20 displays a construction instruction icon 21 indicating the construction items on a specified day, and a consideration instruction icon 22 indicating the work (careful work) that the craftsman in charge should do on that day to reduce the concentration of TVOC. The construction instruction icon 21 is placed at the construction site, and the consideration instruction icon 22 is placed at the place where the careful work should be done (by the window in the example of the figure). The specific work content indicated by the icon 22 is also displayed in an instruction text 23 placed under the drawing. The craftsman in charge has the work instructions displayed on the on-site craftsman device 14, and can thereby grasp the daily construction items and the careful work to reduce the concentration of TVOC.

[0034] When the workman in charge finishes the work for the day, he creates a work report using the on-site craftsman device 14. Fig. 4 is a diagram showing an example of the work report. The work report is uploaded from the on-site craftsman device 14 to the TVOC management device 100. The administrator device 16 can download and display the work report at an appropriate timing. In addition, the TVOC management device 100 analyzes the work report and registers the contents in a database.

[0035] 5 is a functional block diagram of the TVOC management device 100. As shown in the figure, the TVOC management device 100 functionally includes a construction date acquisition unit 101, a ventilation information acquisition unit 102, a ventilation period acquisition unit 103, a diffusion rate acquisition unit 104, a construction area acquisition unit 105, a spatial concentration calculation unit 106, a ventilation amount acquisition unit 108, a building database 109, a work report acceptance unit 110, a process change unit 111, a work instruction unit 112, and a spatial concentration notification unit 113. These functions are realized by the TVOC management device 100, which is a computer, executing a TVOC management program according to an embodiment of the present invention. The TVOC management program may be stored in various computer-readable information storage media such as a semiconductor memory, and may be installed in the TVOC management device 100 from the medium. Alternatively, it may be downloaded from another computer via a communication network 12.

[0036] The building database 109 is a database that stores various data related to building construction. Fig. 6 is a diagram showing the contents stored in the building database 109. As shown in the figure, the building database 109 includes specification data 109S, drawing data 109D, construction plan data 109P, and work report data 109R.

[0037] The specification data 109S includes component data 109a, ventilation equipment data 109b, and test data 109c. The component data 109a is data on the types of components such as building materials and fixtures used in each space (room) on-site. The ventilation equipment data 109b is data on the ventilation volume of the ventilation equipment installed in each space.

[0038] The test data 109c is data of the test results of the TVOC emission rate for each component. In particular, the test data 109c stores the TVOC emission rate from each component as a function of the ventilation period for that component. FIG. 7 is a diagram showing an example of test data for a certain component. In this embodiment, a small chamber test is performed for all components that emit TVOC, and as shown in the figure, the emission rate after n days is obtained as the test result for each component. Here, n is the ventilation period, and in the figure, n=1, 3, 7, but the emission rate after 14±1 days and the emission rate after 28±2 days may also be measured. The small chamber test may be performed with the ventilation rate set to 0.5±0.005 times / hour, the temperature set to 28±1.0°C, and the relative humidity set to 50±5%. Note that a large chamber test may be performed instead of the small chamber test.

[0039] In this embodiment, the data of the test results is used to determine the diffusion rate function, and the information of the diffusion rate function for each member is stored as the test data 109c. Fig. 8 is a diagram showing an example of the diffusion rate function. The diffusion rate function expresses the diffusion rate as a function of the ventilation period. For example, Y=αX -β is used as an approximation curve (Y is the diffusion rate, and X is the ventilation period), and the fitting parameters α and β are adjusted based on the test result data, thereby fitting the approximation curve to the test result data. In this way, the diffusion rate function can be obtained. The parameters α and β obtained for each component may be stored in the building database 109 as information specifying the diffusion rate function.

[0040] The drawing data 109B includes data on architectural design drawings, and in particular data on the construction area (floor area, surface area of ​​fixtures, etc.) of each component in each space. The construction plan data 109P is data on the construction schedule from the start of construction to handover. FIG. 9 is a diagram showing an example of the construction plan data 109P, which corresponds to the TVOC display screen shown in FIG. 2. As shown in FIG. 9, the construction plan data 109P includes data on which components are to be constructed on which days, when each component is to be cured, and when the ventilation equipment is to be operated.

[0041] The work report data 109R includes data on work reports sent daily by on-site craftsmen. The work reports include information on the materials installed in each space, whether the installed materials were covered, whether the cover was removed, the time when the ventilation equipment was operated, the time when the windows were opened for ventilation, and the time when the storage doors were opened.

[0042] The construction date acquisition unit 101 acquires the construction date for each of the building materials, fittings, and other components from the building database 109. The construction date for each component is a planned date acquired from the construction plan data 109P if the component has not yet been constructed, or an actual construction date acquired from the work report data 109R if the component has already been constructed.

[0043] The ventilation information acquisition unit 102 acquires ventilation information on ventilation performed for each component between the construction date and a given concentration calculation date. The concentration calculation date is a date on which an estimated or predicted value of the TVOC concentration is to be calculated. When generating a TVOC display screen, the ventilation information acquisition unit 102 may acquire ventilation information for each date before the delivery date as the concentration calculation date. The ventilation information includes the number of days for which curing is planned or has been done for each component, the number of days for which the ventilation equipment is planned or has been operated, the ventilation volume by the ventilation equipment, the number of days for which ventilation by opening a window is planned or has been done, and the number of days for which a storage door that has already been worked on is planned or has been opened. Note that the curing is ventilation information on the component that is the subject of the curing, and the number of days for which the storage door is open is ventilation information on the storage door. On the other hand, the number of days for which the ventilation equipment is operated and the ventilation volume, and the number of days for which ventilation by opening a window is done are ventilation information on all components. The ventilation information for each component can be acquired from the work report data 109R if it is for a past date. Moreover, for dates after the present date, it can be obtained from the construction plan data 109P. The ventilation volume of the ventilation equipment can be obtained from the ventilation equipment data 109b.

[0044] The ventilation period acquisition unit 103 acquires the ventilation period for each component by calculation based on the construction date and ventilation information for each component. The ventilation period acquired here indicates how many days each component was ventilated in the small chamber test.

[0045] FIG. 10 is a diagram showing an example of calculating the ventilation period for a certain component. In the figure, there are 30 days from the construction of a certain building material to the concentration calculation date, and an example is shown in which window opening ventilation was performed for 15 days (total time equivalent to 15 hours) and ventilation equipment was operated for 10 days (total time equivalent to 10 days). Of the 15 days when window opening ventilation was performed, the building material was protected for 7 days (total time equivalent to 7 days), and the ventilation equipment was operated for 5 days (total time equivalent to 5 days) out of the 10 days when the ventilation equipment was operated. The air leakage is equivalent to ventilation 0.1 times / hour. This value may be changed appropriately depending on the airtightness of the house. In addition, window opening ventilation is equivalent to ventilation 1.0 times / hour. This value can be calculated based on the volume of the indoor space and the inflow air volume due to window opening ventilation. The operation of the ventilation equipment is equivalent to ventilation 0.6 times / hour. This value can also be calculated based on the volume of the indoor space and the inflow air volume due to the ventilation equipment. For small chamber testing, 0.5 air changes per hour shall be performed as described above.

[0046] Under these conditions, ventilation by opening the windows resulted in (15-7) x (1.0 / 0.5) = 16 days of ventilation. Furthermore, ventilation by operating the ventilation equipment resulted in (10-5) x (0.6 / 0.5) = 6 days of ventilation. Furthermore, ventilation by air leakage resulted in 30 x (0.1 / 0.5) = 6 days of ventilation. From the above, the total ventilation period is 28 days.

[0047] In the above explanation, it is assumed that the curing has no effect on air leakage, but it is also possible to assume that there is air leakage excluding the curing period and ventilation was performed for (30-7-5) x (0.1 / 0.5) = 3.6 days. In this case, the total ventilation period will be 25.6 days.

[0048] The ventilation period acquisition unit 103 may calculate the ventilation period for each component based on at least one of the temperature and humidity at the site between the construction date of the component and the concentration calculation date. That is, since the small chamber test is performed under conditions of a temperature of 28±1.0°C and a relative humidity of 50±5%, a correction coefficient may be determined so that the ventilation period is shortened when the temperature at the site is higher than 28°C and is longer when the relative humidity at the site is higher than 50%, and the ventilation period may be corrected using the correction coefficient. Here, the correction coefficient may be calculated using the Berge formula or the Inoue formula. As an example, the Inoue formula is shown in the following formula.

[0049]

number

[0050] Here, ^ indicates a power. C0 is the spatial concentration measured in the small chamber test, and C is the spatial concentration measured at the site. T0 is the temperature (28°C) under the small chamber test conditions, and T is the temperature at the site. H0 is the relative humidity (50%) under the small chamber test conditions, and H is the relative humidity at the site. For example, if the average temperature at a construction site is 24°C and the average humidity is 40%, the value of C0 is 1.4, and the ventilation period corrected for the temperature and humidity at the site is 20 days (=28 days ÷ 1.4).

[0051] The emission rate acquisition unit 104 refers to the test data 109c in the building database 109 and acquires, for each component, an emission rate corresponding to the ventilation period acquired by the ventilation period acquisition unit 103. That is, since information on the emission rate function as shown in Fig. 8 is pre-stored in the building database 109 as the test data 109c, the emission acquisition unit 104 substitutes the ventilation period acquired by the ventilation period acquisition unit 103 to calculate the corresponding emission rate.

[0052] The construction area acquisition unit 105 refers to the drawing data 109D in the building database 109 for each component to acquire the construction area thereof.

[0053] The ventilation amount acquisition unit 108 refers to the ventilation equipment data 19b in the building database 109 to acquire the ventilation amount at the construction site on the concentration calculation date.

[0054] The spatial concentration calculation unit 106 calculates the TVOC concentration at the site based on the emission rate of each component, the construction area of ​​each component, and the ventilation volume at the construction site on the concentration calculation date. Here, the emission rate of each component is input from the emission rate acquisition unit 104. The construction area of ​​each component is input from the construction area acquisition unit 105. The ventilation volume at the construction site is input from the ventilation volume acquisition unit 108. By substituting this input information into the following equation, the spatial concentration calculation unit 106 obtains the TVOC concentration C at the site on the concentration calculation date.

[0055]

number

[0056] Here, Y is the emission rate of each component. S is the construction area of ​​each component. Σ is the sum over all components. And Q is the ventilation rate of the construction site.

[0057] As described above, when there are materials exposed to the architectural space and materials inside the walls at a construction site, the TVOC concentration is calculated separately for each. Then, the TVOC concentration corresponding to the materials inside the walls is multiplied by a correction factor (10 to 80%) to calculate the contribution W from the materials inside the walls. The final TVOC concentration at the site is calculated by adding this contribution W to the TVOC concentration corresponding to the materials exposed to the architectural space. The correction factor may be determined based on the ventilation conditions at the site. For example, in the case of type 3 ventilation or local ventilation, a large correction factor (e.g., 80%) may be used due to the influence of negative pressure. Conversely, in the case of type 1 ventilation or window opening ventilation, a small correction factor (e.g., 10%) may be used. In addition, when there is no ventilation, a correction factor in between (e.g., 30%) may be used.

[0058] The spatial concentration notification unit 113 transmits the TVOC concentration calculated by the spatial concentration calculation unit 106 to the administrator device terminal 16. At this time, the spatial concentration notification unit 113 may generate a TVOC display screen shown in FIG.

[0059] The work report receiving unit 110 receives a work report from the site craftsman device 14 and registers the contents as work report data 109R. The work instruction unit 112 receives a work instruction from the manager device 16 and transmits it to the site craftsman device 14. To cause the manager device 16 to create a work instruction, the work instruction unit 112 may transmit a part or all of the construction plan data 109D stored in the building database 109 to the manager device as appropriate.

[0060] The process change unit 111 changes the construction plan data 109D according to instructions from the manager device 16. As described above, the manager device 16 is notified of the TVOC concentration at the construction site, and the manager may see the information and decide that the construction plan should be changed. In such a case, the process change unit 111 accepts the change request from the manager device 16 and changes the construction plan data 109D accordingly so that the TVOC concentration becomes less than the target TVOC concentration.

[0061] According to the TVOC management system 10 described above, the spatial concentration of TVOCs at a construction site where many components are installed can be calculated with high accuracy, taking into account the construction date of each component and the ventilation situation after that. This can be used to alert managers and craftsmen in charge, and can be used to improve construction plans and implement considerate work.

[0062] The present invention is not limited to the above embodiment, and various modifications are possible. For example, the present invention can be applied to the calculation of the spatial concentration of not only TVOC but also a single volatile organic compound, such as formaldehyde.

[0063] In addition, the TVOC concentrations of not only materials installed at a construction site, but also materials such as furniture that are brought into and installed at a construction site can be calculated in the same manner as described above.

[0064] Furthermore, in the above explanation, the ventilation period is calculated starting from the installation date of each component, but the ventilation period may be calculated starting from the manufacturing date of each component. [Explanation of symbols]

[0065] 10 TVOC management system, 12 communication network, 14 on-site craftsman device, 16 administrator device, 20 architectural drawing, 21 construction instruction icon, 22 consideration instruction icon, 23 instruction text, 100 TVOC management device, 101 construction date acquisition unit, 102 ventilation information acquisition unit, 103 ventilation period acquisition unit, 104 emission rate acquisition unit, 105 construction area acquisition unit, 106 spatial concentration calculation unit, 108 ventilation volume acquisition unit, 109 architectural database, 110 work report reception unit, 111 process change unit, 112 work instruction unit, 113 spatial concentration notification unit.

Claims

1. A volatile organic compound management device for managing the spatial concentration of volatile organic compounds at a construction site where a plurality of components are installed, an emission rate storage means for storing, for each of the components, the emission rate of the volatile organic compounds from the component as a function of a ventilation period in a test of the emission rate of the volatile organic compounds for the component, the test being performed at a predetermined ventilation frequency; A construction date acquisition means for acquiring a construction date of each of the components; A construction area acquisition means for acquiring a construction area of ​​each of the members; A ventilation information acquisition means for acquiring ventilation information indicating a total period during which a predetermined ventilation is performed at the construction site from the construction date to a given date for each of the components; When the predetermined ventilation corresponds to a ventilation rate of a predetermined value in the test, a ventilation period acquisition means acquires a ventilation period in the test corresponding to a period from the construction date to the given date based on the total period indicated by the ventilation information, the predetermined ventilation rate, and the predetermined value for each of the components; an emission rate acquisition means for acquiring the emission rate for each of the members according to the ventilation period acquired by the ventilation period acquisition means, with reference to the emission rate storage means; A spatial concentration calculation means for calculating a spatial concentration of the volatile organic compounds at the construction site on the given date based on the emission rate of each of the components, the construction area of ​​each of the components, and the ventilation volume of the construction site on the given date; A volatile organic compound management device comprising:

2. 2. The volatile organic compound management device according to claim 1, A volatile organic compound management device, wherein the construction date of each of the components is a planned date obtained from construction plan data.

3. The volatile organic compound management device according to claim 2, A volatile organic compound management device, wherein the ventilation information for each of the components is obtained from the construction plan data.

4. The volatile organic compound management device according to claim 1, A volatile organic compound management device, wherein the construction date of each of the components is an actual construction date obtained from work report data.

5. The volatile organic compound management device according to claim 4, The ventilation information of each of the components is obtained from the work report data.

6. The volatile organic compound management device according to claim 1, A volatile organic compound management device, wherein the ventilation information relating to each of the components includes information on the curing period of the component.

7. The volatile organic compound management device according to claim 1, A volatile organic compound management device, wherein the ventilation information for each of the components includes information on the number of days and ventilation volume for which the component is ventilated by the ventilation equipment between the construction date of the component and the given date.

8. The volatile organic compound management device according to claim 1, A volatile organic compound management device, wherein the ventilation period acquisition means acquires the ventilation period for each of the components based further on at least one of the temperature or humidity at the construction site between the construction date of the component and the given date.

9. The volatile organic compound management device according to claim 1, The spatial concentration calculation means calculates the spatial concentration of the volatile organic compounds based on whether or not each of the components is exposed to the construction site.

10. A volatile organic compound management method for managing a spatial concentration of volatile organic compounds at a construction site where a plurality of components are installed, comprising: an installation date acquisition step in which an installation date acquisition means of the volatile organic compound management device acquires an installation date for each of the components; a construction area acquisition step in which a construction area acquisition means of the volatile organic compound management device acquires the construction area of ​​each of the components; A ventilation information acquisition step in which the ventilation information acquisition means of the volatile organic compound management device acquires ventilation information indicating a total period during which a predetermined ventilation is performed at the construction site from the construction date to a given date for each of the components; a ventilation period acquisition step in which, when a ventilation period acquisition means of the volatile organic compound management device is used for each of the components in a test of the emission rate of volatile organic compounds for the components, the ventilation period acquisition means acquires, for each of the components, a ventilation period in the test that corresponds to the period from the construction date to the given date, based on the total period indicated by the ventilation information, the predetermined ventilation period, and the predetermined value, in a case where the predetermined ventilation corresponds to a ventilation with a predetermined value of the ventilation period; an emission rate acquisition step in which the emission rate acquisition means of the volatile organic compound management device acquires, for each of the components, the emission rate corresponding to the ventilation period acquired by the ventilation period acquisition means, by referring to an emission rate storage means that stores, for each of the components, the emission rate of the volatile organic compounds from the component as a function of the ventilation period in the test for the component; a spatial concentration calculation step in which the spatial concentration calculation means of the volatile organic compound management device calculates the spatial concentration of the volatile organic compounds at the construction site on the given date based on the emission rate of each of the components, the construction area of ​​each of the components, and the ventilation volume of the construction site on the given date; A volatile organic compound control method comprising:

11. A program that causes a computer to function as a volatile organic compound management device that manages the spatial concentration of volatile organic compounds at a construction site where a plurality of components are installed, an emission rate storage means for storing, for each of the components, the emission rate of the volatile organic compounds from the component as a function of a ventilation period in a test of the emission rate of the volatile organic compounds for the component, the test being performed at a predetermined ventilation frequency; A construction date acquisition means for acquiring a construction date for each of the components; A construction area acquisition means for acquiring a construction area of ​​each of the members; A ventilation information acquisition means for acquiring ventilation information indicating a total period during which a predetermined ventilation is performed at the construction site from the construction date to a given date for each of the components; a ventilation period acquisition means for acquiring a ventilation period in the test corresponding to a period from the construction date to the given date for each of the members based on the total period indicated by the ventilation information, the predetermined ventilation frequency, and the predetermined value when the predetermined ventilation corresponds to ventilation with a predetermined value in the test; an emission rate acquisition means for acquiring, for each of the members, the emission rate corresponding to the ventilation period acquired by the ventilation period acquisition means, by referring to the emission rate storage means; a spatial concentration calculation means for calculating a spatial concentration of the volatile organic compounds at the construction site on the given date based on the emission rate of each of the components, the construction area of ​​each of the components, and the ventilation volume of the construction site on the given date; A program for causing the computer to function as a

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