Apparatus and method for evaluating performance of building using natural pressure difference in building

Abstract

The present invention relates to a building performance evaluation device and method utilizing the natural pressure difference of a building. According to the present invention, a building performance evaluation device utilizing the natural pressure difference of a building comprises: a data acquisition unit that acquires absolute pressure data measured in each of the multiple zones separated by the outer wall in each of the multiple floors within the building; a pressure difference calculation unit that calculates the pressure difference occurring at the boundary between adjacent neighboring zones in order from the starting zone in the central part of the building to the last zone corresponding to the outer wall area of ​​the building, based on the absolute pressure measured in each zone; a TDC calculation unit that calculates a plurality of pressure distribution ratios (TDC) from the ratio obtained by dividing the plurality of pressure differences occurring at each boundary location between the multiple neighboring zones within the floor by the total pressure difference occurring between the starting zone and the last zone; and a detection unit that detects an abnormal floor among the multiple floors in which an airtightness abnormality has occurred by comparing the plurality of pressure distribution ratios for each floor. As such, according to the present invention, the airtightness construction quality of a building can be evaluated by examining the pressure difference between the main compartments of each floor within a high-rise building.

Description

Technology Field

[0001] The present invention relates to a building performance evaluation device and method utilizing the natural pressure difference of a building, and more specifically, to a building performance evaluation device and method capable of evaluating the airtightness performance of a building utilizing the pressure difference that naturally occurs in a high-rise building. Background Technology

[0002] Recently, extensive research on passive building technologies has been conducted to improve energy efficiency in buildings. Performance evaluations are being performed on these passive building technologies.

[0003] Among passive building technologies, airtightness performance is generally evaluated using the pressurization / reduction method utilizing fans. However, measuring airtightness in high-rise buildings using this method presents many difficulties due to factors such as wind and pressure differences caused by the stack effect.

[0004] In high-rise buildings, high pressure differences occur in major compartments due to the stack effect, resulting in a high error rate as the zero-flow pressure difference condition among the experimental conditions of major measurement standards for pressurization / depressurization methods (KS, ISO, EN, ASTM, etc.) is not satisfied.

[0005] Furthermore, reviewing the airtightness performance of a single floor in high-rise buildings is difficult because it requires a significant amount of time, personnel, and equipment. In particular, during the winter, the stack effect causes high pressure differences in elevator shafts, elevator hall compartments, and the building envelope, resulting in energy loss.

[0006] Therefore, in order to improve energy efficiency in high-rise buildings, it is necessary to develop performance evaluation methods suitable for the site conditions of high-rise buildings.

[0007] The technology forming the background of the present invention is disclosed in Korean Registered Patent No. 10-2283329 (published July 29, 2021). The problem to be solved

[0008] The present invention aims to provide a building performance evaluation device and method using the natural pressure difference of a building, which can evaluate the airtightness performance of a building by measuring the absolute pressure for each floor of the building and then calculating the pressure difference and the pressure distribution ratio. means of solving the problem

[0009] The present invention relates to a building performance evaluation device utilizing the natural pressure difference of a building, comprising: a data acquisition unit for acquiring absolute pressure data measured in each of the multiple zones separated by the outer wall in each of the multiple floors within the building; a pressure difference calculation unit for calculating the pressure difference occurring at the boundary between adjacent neighboring zones in order from the starting zone in the center of the building to the last zone corresponding to the outer wall area of ​​the building, based on the absolute pressure measured in each zone; a TDC calculation unit for calculating a plurality of pressure distribution ratios (TDC) from the ratio obtained by dividing the plurality of pressure differences occurring at each boundary location between the multiple neighboring zones within the floor by the total pressure difference occurring between the starting zone and the last zone; and a detection unit for detecting an abnormal floor among the multiple floors in which an airtightness abnormality has occurred by comparing the plurality of pressure distribution ratios for each floor.

[0010] In addition, the absolute pressure of each zone is measured using a measuring device installed for each of the aforementioned multiple zones, and the measuring device may be installed at the same location for each of the aforementioned multiple layers.

[0011] In addition, the plurality of zones may include the elevator shaft space, elevator interior hall space, corridor space, office space, and the outer wall area as the final zone, which is the starting zone.

[0012] In addition, the detection unit calculates the average of the plurality of pressure distribution ratios for each layer to determine a normal range for the average, and if there is a layer among the plurality of layers where the average of the pressure distribution ratios deviates from the normal range, the layer can be detected as an abnormal layer.

[0013] In addition, the detection unit can determine a normal range of pressure distribution ratios for each boundary location based on the pressure distribution ratio for each layer relative to the same boundary location, and if there is a layer among the multiple layers where the pressure distribution ratio at at least one boundary location deviates from the normal range of the boundary location, the layer can be detected as an abnormal layer.

[0014] In addition, the detection unit can detect a boundary location outside the normal range among a plurality of boundary locations within the abnormal layer as an abnormal occurrence location within the abnormal layer.

[0015] In addition, the building performance evaluation device may further include an output unit that outputs a notification message requesting inspection and maintenance of the detected abnormal floor when an abnormal floor in which the airtightness abnormality has occurred is detected.

[0016] Furthermore, the present invention comprises a building performance evaluation method performed by a building performance evaluation device, the method comprising: acquiring absolute pressure data measured in each of the multiple zones separated by the outer wall in each of the multiple floors within the building; calculating the pressure difference occurring at the boundary between adjacent neighbor zones in order from the starting zone in the center of the building to the last zone corresponding to the outer wall area of ​​the building, based on the absolute pressure measured in each zone; calculating a plurality of pressure distribution ratios (TDC) from the ratio obtained by dividing the plurality of pressure differences occurring at each boundary location between the multiple neighbor zones within the floor by the total pressure difference occurring between the starting zone and the last zone; and detecting an abnormal floor among the multiple floors in which an airtightness abnormality has occurred by comparing the plurality of pressure distribution ratios for each floor. Effects of the invention

[0017] According to the present invention, the airtightness construction quality of a building can be evaluated by examining the pressure difference between the main compartments of each floor within a high-rise building.

[0018] In addition, according to the present invention, by calculating the pressure difference for major compartments on each floor of a building and reviewing the pressure distribution ratio to compare floor by floor, it is possible to detect floors with airtightness abnormalities where a difference occurs from other floors, and to enable on-site inspection and airtightness construction quality evaluation for each compartment of the abnormal floor, as well as repair and management of the abnormal points. Brief explanation of the drawing

[0019] FIG. 1 is a drawing illustrating a building performance evaluation system using the natural pressure difference of a building according to an embodiment of the present invention. FIG. 2 is a diagram illustrating, in an exemplary manner, the data collection device and measuring device shown in FIG. 1. Figure 3 is a diagram showing the configuration of the building performance evaluation device illustrated in Figure 1. FIG. 4 is a diagram illustrating, in an embodiment of the present invention, an exemplary view of a measuring device installed in each zone of a specific floor within a building. Figure 5 is a diagram showing the result of calculating the pressure difference for each floor within a high-rise building according to an embodiment of the present invention. Figure 6 is a diagram illustrating a method for evaluating building performance using the device of Figure 3. Specific details for implementing the invention

[0020] Then, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0021] Throughout the specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" with other components interposed between them. Furthermore, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0022] This invention proposes a technique for evaluating building performance (particularly airtightness) by utilizing the natural pressure difference of high-rise buildings. The evaluation of a building's airtightness is primarily performed using the pressurization / reduction method employing a blower door system. However, there are significant limitations to measuring airtightness using this pressurization / reduction method in high-rise buildings. Specifically, due to the natural pressure difference caused by factors such as building height and indoor-outdoor temperature differences, it is difficult to efficiently measure airtightness using conventional pressurization / reduction methods.

[0023] Accordingly, the following embodiments of the present invention provide a method for evaluating the airtightness performance of a building by examining the pressure difference between major compartments on each floor of a high-rise building using an absolute pressure monitoring device (X-ray monitoring system). In the embodiments of the present invention, a high-rise building may refer to a building of about 6 stories or more, but the present invention is not necessarily limited thereto.

[0024] FIG. 1 is a drawing illustrating a building performance evaluation system using the natural pressure difference of a building according to an embodiment of the present invention, and FIG. 2 is a drawing exemplarily illustrating a data collection device and a measuring device shown in FIG. 1.

[0025] As shown in FIG. 1, a building performance evaluation system according to an embodiment of the present invention may include a building performance evaluation device (100), a plurality of measuring devices (300), and a data collection device (200).

[0026] The building performance evaluation device (100) can measure absolute pressure using a plurality of measuring devices (300) installed in the main compartments of each floor of the building and analyze it to perform an evaluation of the airtightness construction quality of the building.

[0027] As shown in FIG. 2, the data collection device (200) and the plurality of measuring devices (300) are devices that measure and store the absolute pressure of each zone, and may refer to the absolute pressure monitoring equipment (X-ray monitoring system) described above. Such absolute pressure monitoring equipment may be provided for each floor.

[0028] A plurality of measuring devices (300) may include an absolute pressure gauge for measuring absolute pressure and a communication module for transmitting and receiving data with a data collection device (200). The plurality of measuring devices (300) may be connected to and communicate with the data collection device (200) via a wired, wireless, or combined wired-wireless network. Each measuring device (300) may be installed at the same location on each of the multiple floors within the building.

[0029] The data collection device (200) can receive absolute pressure measurements from a plurality of measuring devices (300) and display them. In addition, the data collection device (200) can provide the absolute pressure data collected through each measuring device (300) to the building performance evaluation device (100) via a wired network, a wireless network, or a combined wired and wireless network.

[0030] A building performance evaluation device (100) according to an embodiment of the present invention may be implemented in the form of a computer device or user terminal including a processor, memory, user interface input / output device, storage device, etc., or may be implemented as a web or app-based application program executed on a computer device or user terminal.

[0031] Figure 3 is a diagram showing the configuration of the building performance evaluation device illustrated in Figure 1.

[0032] As shown in FIG. 3, a building performance evaluation device (100) using the natural pressure difference of a building according to an embodiment of the present invention includes a data acquisition unit (110), a pressure difference calculation unit (120), a TDC calculation unit (130), and a detection unit (140), and may further include an output unit (150). Here, the operation of each unit (110 to 150) and the data flow between each unit may be performed by a control unit (not shown).

[0033] The data acquisition unit (110) acquires absolute pressure data measured in multiple zones separated by an outer wall on each floor within the building. The data acquisition unit (110) can acquire absolute pressure measurements through a measuring device (300) installed in each zone. The measuring device (300) can monitor the pressure in each zone and provide it to the data acquisition unit (110).

[0034] FIG. 4 is a diagram illustrating, in an embodiment of the present invention, an exemplary view of a measuring device installed in each zone of a specific floor within a building.

[0035] As shown in FIG. 4, in an embodiment of the present invention, the data acquisition unit (110) can acquire the absolute pressure of each zone through a measuring device (300) installed for each of the plurality of zones (A, B, C, D, E). Here, FIG. 4 is an exemplary representation of a specific layer, and the measuring device (300) is installed at the same location for each of the plurality of layers to measure the absolute pressure of the same zone.

[0036] Multiple zones on each floor within the building can be divided into a starting zone, which is the elevator shaft space (A), an elevator interior hall space (B), a corridor space (C), an office space (D), and a final zone, which is the exterior wall area (E).

[0037] The elevator shaft space (A) is a vertically long space extending from the innermost part of the building to the height of the building, and is the space where the elevator moves up and down; a pressure difference may exist between this space and the elevator interior hall space (B). The elevator interior hall space refers to the space where a person boards when the elevator door opens.

[0038] In addition, the elevator interior hall space (B) is separated from the corridor space (C) by the elevator door, and a pressure difference may exist between the corridor space (C) and the corridor space (C). Furthermore, the corridor space (C), where people move within the building, is again separated from the office area (D) by walls, doors, etc., and a pressure difference may exist between the office area (D) and the office area (D). Also, the office area (D) is separated from the building exterior wall area (E) by exterior walls, windows, etc., and a pressure difference may exist between the exterior wall area (E) and the office area (D).

[0039] In FIG. 4, a measuring device (300) is installed for each zone (A~E), and through this, the absolute pressure P for each zone (A~E) S , P1, P2, P3, P out These are each measured. Here, P S and P out The difference between P natural This may refer to the natural pressure difference that occurs at the corresponding floor level within the building.

[0040] The pressure difference calculation unit (120) calculates the pressure difference between adjacent neighbor zones based on the absolute pressure measured in each of these zones, in the order from the starting zone (A) in the center of the building to the last zone (B) corresponding to the outer wall area of ​​the building.

[0041] For example, in the case of Fig. 4, the pressure difference (ΔP) that occurred between adjacent zones from A to E i ) is operated on respectively. If there are a total of N zones, it can be expressed as i={1,…,N-1}. In the example with 5 zones as shown in Fig. 4, a total of 4 pressure differences can be obtained, specifically P SDifference between and P1 (ΔP1), difference between P1 and P2 (ΔP2), difference between P2 and P3 (ΔP3), difference between P3 and P out The difference (ΔP4) can be calculated.

[0042] Next, the TDC calculation unit (130) calculates a plurality of pressure differences (ΔP) that occur at each boundary location between a plurality of neighboring zones within the layer. i ) is the total pressure difference (ΔP) that occurred between the starting zone and the last zone. natural Multiple pressure distribution ratios (TDC, thermal draft coefficient) are calculated from the ratio divided by ).

[0043] Here, the total pressure difference between the starting zone and the last zone may represent the difference in absolute pressure between the innermost and outermost spaces of the building. Additionally, the pressure distribution ratio corresponds to a value resulting from the pressure distribution caused by the stack effect in high-rise buildings. In this way, if multiple pressure differences calculated between adjacent zones of the corresponding floor are each divided by the total pressure difference, a ratio value is calculated, and this ratio becomes the pressure distribution ratio value.

[0044] Next, the detection unit (140) compares a plurality of pressure distribution ratios for each layer to detect an abnormal layer among the plurality of layers in which a sealing abnormality has occurred. If a crack or hole exists in the boundary portion between at least one neighboring zone in the corresponding layer, the pressure distribution ratio calculated in that layer may indicate an abnormal value trend that deviates from the normal range compared to other normal layers. Therefore, in the embodiment of the present invention, an abnormal sealing layer in which a sealing abnormality has occurred in the sealing performance can be identified based on the pressure distribution ratio obtained from each layer.

[0045] The output unit (150) can output a notification message requesting inspection and maintenance of the detected abnormal layer when an abnormal layer with a leak is detected. This output unit (150) can provide the relevant message to a user terminal, such as a display screen provided in the device (100) or a network-connected smartphone.

[0046] According to the present invention, the pressure difference for each floor of a high-rise building is calculated, and the pressure distribution ratio is reviewed using the natural pressure difference to evaluate the airtightness construction quality of the building.

[0047] Figure 5 is a diagram showing the result of calculating the pressure difference for each floor within a high-rise building according to an embodiment of the present invention.

[0048] In Figure 5, for the sake of convenience of explanation, it is assumed that there are four main zones partitioned by floor, and as four absolute pressures are observed for these four zones, the pressure difference ΔP per floor i An example is provided where three values ​​are derived. At the bottom, the pressure distribution ratio (TDC) values ​​derived using this are shown for each layer of each material.

[0049] At this time, the pressure difference is ΔP i The values ​​may vary depending on the boundary location. Figure 5 shows that the largest value of ΔP3 was derived at the boundary of the building's outer wall. Here, Floor 2 represents an abnormal floor where airtightness performance actually occurred. If cracks or micro-holes occur in some walls within this floor, TDC values ​​with a different pattern from other floors may be derived. Here, TDC values ​​with a different pattern distinct from other floors may appear only at specific boundary locations or may appear generally across all boundary locations. It can be observed that the three pressure distribution ratios derived from Floor 2 (refer to the dotted box) show some deviation from the three pressure distribution ratios derived from the same locations in the remaining normal floors.

[0050] In the embodiments of the present invention, there may be two embodiments of the method for detecting an abnormal layer where a sealing abnormality has occurred based on this pressure distribution ratio.

[0051] In one embodiment, the detection unit (140) can identify an abnormal layer that differs from other layers by obtaining the average of the TDC values ​​calculated in each layer and comparing the average TDC values ​​obtained from multiple layers.

[0052] Specifically, in an embodiment of the present invention, the detection unit (140) calculates the average of a plurality of pressure distribution ratios (TCD average) for each floor to determine a normal range for the TDC average, and if there is a floor among the plurality of floors where the TDC average deviates from the normal range, that floor can be detected as an abnormal floor. Here, the normal range can be obtained based on probabilistic analysis, deep learning analysis, etc., of the average value of the pressure distribution ratio for each floor. For probabilistic analysis, the probability distribution, variance, median (mean value), standard deviation, etc., of a parameter called the TCD average obtained for a plurality of floors within a high-rise building can be utilized. In addition, the normal range can be obtained from the result of learning the average of the pressure distribution ratio obtained for a normal floor that has been confirmed to have no problem with airtightness performance.

[0053] Here, in a situation like that shown in Fig. 5, the average TDC of each layer is derived as a similar value, making it difficult to detect an abnormal layer. Therefore, as described below, a method of comparing TDC values ​​based on the same boundary location for each layer may be used.

[0054] That is, in another embodiment, the detection unit (140) can identify an abnormal layer that differs from other layers by comparing the TDC values ​​calculated at the same boundary location for each layer, and in this case, can identify an abnormal location within the abnormal layer where a problem with airtightness performance is expected.

[0055] Specifically, in an embodiment of the present invention, the detection unit (140) targets a plurality of boundary locations existing on each floor and determines a normal range of the pressure distribution ratio for each boundary location from the pressure distribution ratio for each floor for the same boundary location. If there is a floor among the plurality of floors where the pressure distribution ratio at at least one boundary location deviates from the normal range of that boundary location, that floor can be detected as an abnormal floor. Here, the normal range at each boundary location can be obtained based on probabilistic analysis, deep learning analysis, etc., of the pressure distribution ratio obtained at the corresponding boundary location for each floor. For probabilistic analysis, the probability distribution, variance, median (mean), standard deviation, etc., of a parameter called TCD obtained at the corresponding boundary location for each of the plurality of floors in a high-rise building can be utilized. Additionally, the normal range can be obtained from the result of learning the pressure distribution ratio obtained for the corresponding boundary location for normal floors that have been confirmed to actually have no problem with airtightness performance.

[0056] Here, the detection unit (140) can detect a boundary location outside the normal range among a plurality of boundary locations within the detected abnormal layer as an abnormal occurrence location within the abnormal layer. In the case of FIG. 5, since the TDC value of the abnormal value is shown at all three boundary locations that are distinct from other layers, all boundary locations can be subject to inspection.

[0057] Figure 6 is a diagram illustrating a method for evaluating building performance using the device of Figure 3.

[0058] First, the building performance evaluation device (100) reviews design details such as building drawings (S610) and selects multiple measurement zones (zones) to be subject to absolute pressure measurement based on the design details (S620). Accordingly, a measuring device (300) is installed in the selected multiple zones.

[0059] And the building performance evaluation device (100) obtains absolute pressure data by using a measuring device (300) for each floor to measure the absolute pressure in each of the multiple zones within the floor (S630).

[0060] Next, the building performance evaluation device (100) calculates the pressure difference between neighboring zones using the absolute pressure measured in each zone, and then calculates the pressure distribution ratio using the pressure difference (S640).

[0061] Here, the building performance evaluation device (100) compares a plurality of pressure distribution ratios for each floor to detect whether there is an abnormal floor among the plurality of floors where an abnormality has occurred (S650). If there is no abnormal floor where an abnormality has occurred, the evaluation process is terminated, and if there is an abnormal floor, a notification is provided so that repairs to the abnormal point can be made through airtightness performance inspection and verification of the floor (S660~S670).

[0062] According to the present invention, the airtightness construction quality of a building can be evaluated by examining the pressure difference between the main compartments of each floor within a high-rise building.

[0063] In addition, according to the present invention, by calculating the pressure difference for major compartments on each floor of a building and reviewing the pressure distribution ratio to compare floor by floor, it is possible to detect floors with airtightness abnormalities where a difference occurs from other floors, and to enable on-site inspection and airtightness construction quality evaluation for each compartment of the abnormal floor, as well as repair and management of the abnormal points.

[0064] The present invention has been described with reference to embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0065] 100: Building performance evaluation device 110: Data acquisition unit 120: Pressure difference calculation unit 130: TDC calculation unit 140: Detection unit 140: Output unit 200: Data acquisition device 300: Measurement device

Claims

Claim 1 A building performance evaluation device utilizing natural pressure difference in a building comprises: a data acquisition unit for acquiring absolute pressure data measured in each of the multiple zones separated by an outer wall in each of the multiple floors within the building; a pressure difference calculation unit for calculating the pressure difference occurring at the boundary between adjacent neighbor zones in order from the starting zone in the center of the building to the last zone corresponding to the outer wall area of ​​the building, based on the absolute pressure measured in each zone; a TDC calculation unit for calculating a plurality of pressure distribution ratios (TDC) from the ratio obtained by dividing the plurality of pressure differences occurring at each boundary location between the multiple neighbor zones within the floor by the total pressure difference occurring between the starting zone and the last zone; and a detection unit for detecting an abnormal floor in which an airtightness abnormality has occurred among the multiple floors by comparing the plurality of pressure distribution ratios for each floor, wherein the detection unit calculates the average of the plurality of pressure distribution ratios for each floor to determine a normal value range for the average, and if there is a floor among the multiple floors in which the average of the pressure distribution ratios deviates from the normal range, the floor is detected as an abnormal floor. Claim 2 In claim 1, the data acquisition unit acquires data through a plurality of measuring devices installed for each of the plurality of zones and measuring the absolute pressure of each zone, and the measuring device is a building performance evaluation device installed at the same location for each of the plurality of floors. Claim 3 A building performance evaluation device according to claim 1, wherein the plurality of zones include the starting zone, which is an elevator shaft space, an elevator interior hall space, a corridor space, an office space, and the last zone, which is an exterior wall area. Claim 4 delete Claim 5 A building performance evaluation device according to claim 1, wherein the detection unit determines a normal range of the pressure distribution ratio for each boundary location based on the pressure distribution ratio for each floor relative to the same boundary location, and if there is a floor among the plurality of floors where the pressure distribution ratio at at least one boundary location deviates from the normal range of the boundary location, the floor is detected as an abnormal floor. Claim 6 In claim 5, the detection unit is a building performance evaluation device that detects a boundary location outside the normal range among a plurality of boundary locations within the abnormal layer as an abnormal occurrence location within the abnormal layer. Claim 7 A building performance evaluation device according to claim 1, further comprising an output unit that outputs a notification message requesting inspection and maintenance of the detected abnormal layer when the abnormal layer in which the above-mentioned airtightness has occurred is detected. Claim 8 A building performance evaluation method performed by a building performance evaluation device comprises: a step of acquiring absolute pressure data measured in each of the multiple zones separated by the outer wall in each of the multiple floors within the building; a step of calculating the pressure difference occurring at the boundary between adjacent neighbor zones in order from the starting zone in the center of the building to the last zone corresponding to the outer wall area of ​​the building, based on the absolute pressure measured in each zone; a step of calculating a plurality of pressure distribution ratios (TDC) from the ratio obtained by dividing the plurality of pressure differences occurring at each boundary location between the multiple neighbor zones within the floor by the total pressure difference occurring between the starting zone and the last zone; and a step of detecting an abnormal floor in which an airtightness abnormality has occurred among the multiple floors by comparing the plurality of pressure distribution ratios for each floor, wherein the step of detecting the abnormal floor comprises calculating the average of the plurality of pressure distribution ratios for each floor to determine a normal value range for the average, and if there exists a floor among the multiple floors in which the average of the pressure distribution ratios deviates from the normal range, detecting that floor as an abnormal floor. Claim 9 A building performance evaluation method according to claim 8, wherein the absolute pressure of each zone is measured using a measuring device installed for each of the plurality of zones, and the measuring device is installed at the same location for each of the plurality of floors. Claim 10 delete Claim 11 A building performance evaluation method according to claim 8, wherein the step of detecting an abnormal layer comprises determining a normal range of pressure distribution ratios for each boundary location based on the pressure distribution ratio for each layer relative to the same boundary location, and if there is a layer where the pressure distribution ratio at at least one boundary location among the multiple layers deviates from the normal range of the boundary location, the layer is detected as an abnormal layer. Claim 12 A building performance evaluation method according to claim 11, wherein the step of detecting the abnormal layer is to detect a boundary location outside the normal range among a plurality of boundary locations within the abnormal layer as an abnormal occurrence location within the abnormal layer.

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