JP6384791B2 - Thermal insulation performance estimation device, program - Google Patents

Description

  The present invention relates to a thermal insulation performance estimation device for estimating thermal insulation performance of a building, and a program for causing a computer to function as the thermal insulation performance estimation device.

  Conventionally, in order to measure the thermal insulation performance of a building such as a house, the temperature inside the building, the temperature outside the building, and the energy consumption of the equipment are measured, and the history of the measured data is used. A technique for analyzing heat insulation performance has been proposed (see, for example, Patent Document 1).

  Patent Document 1 describes a time when there is little influence such as operation of an air conditioner such as heating and cooling, heat generation of a person, opening and closing of a window and a door, operation of an electric device such as a lighting device, a television or a refrigerator, and operation of a heating device. Select and measure the insulation performance. Patent Document 1 exemplifies midnight when there are no residents in spring or autumn as such a period. In Patent Document 1, it is not necessary to use an air conditioner during such a period, the amount of heat generated by human activities is small, windows and doors are not opened and closed, and lighting devices and television switches are turned off. It is explained that it is time.

  Further, in Patent Document 1, when the heating device is operated and the room temperature reaches a certain temperature, the temperature inside the house and the outside temperature are measured and converted from the power consumption amount of the heating device into the heat generation amount. Have been described. Further, it is described that a heat loss coefficient is obtained for the evaluation of heat insulation performance from the relationship between the temperature difference between the inside and outside of the house and the amount of heat generated. The fact that the room temperature has reached a certain temperature is determined from the measured value of the temperature and humidity sensor.

JP 2010-242487 A

  As described above, Patent Document 1 describes a technique for evaluating the heat insulation performance of a building by selecting a time period, and a technique for evaluating the heat insulation performance of a building in a state in which the heat generating device is operated.

  By the way, when calculating | requiring heat insulation performance, it is necessary to consider the calorie | heat_amount of an indoor, but since the calorie | heat_amount of an indoor fluctuates with various factors, it is difficult to measure correctly. Therefore, in Patent Document 1, a specific time is selected, or the room temperature is made to reach a certain temperature by a heat generating device.

  However, as in the technique described in Patent Document 1, even when paying attention to the time when information used for calculation of heat insulation performance is acquired or the environment when the information is acquired, it is possible to accurately measure the amount of heat indoors. Not exclusively. Therefore, it cannot be said that the technique described in Patent Document 1 provides high reliability for the calculation result of the heat insulation performance.

  An object of the present invention is to provide a thermal insulation performance estimation device that makes it possible to improve the reliability of calculation results for thermal insulation performance, and a program for causing a computer to function as the thermal insulation performance estimation device.

The heat insulation performance estimation apparatus according to the present invention includes a first acquisition unit that acquires temperature information about indoor and outdoor temperatures in a building every unit time, and energy consumed by a cooling device or a heating device that changes the indoor temperature. A second acquisition unit that acquires heat quantity information for each unit time, and a factor that gives disturbance to the indoor heat quantity in the building , and acquires information about factors that are different from the cooling device and the heating device A third determination unit; a pre-determination unit that determines whether the temperature information and the heat information satisfy a predetermined determination condition; and the temperature information and the heat amount when the determination condition is satisfied. and a calculation unit for calculating the heat insulation performance of the building by using the information, the determination condition, thermal equilibrium der between the temperature information and the amount of heat information and the indoors and the outdoors A first determination condition set with respect to the variation range of the temperature information so as to determine that it has been acquired during a period, and a second determination set to determine whether or not a disturbance to the indoor heat quantity has occurred The pre-determining unit determines a period in which the variation range of the temperature information is a predetermined range based on the first determination condition as a period in which the indoor and the outdoor are in a thermal equilibrium state. , Using the information acquired by the third acquisition unit to determine whether a disturbance has occurred in the period of the thermal equilibrium state based on the second determination condition, the calculation unit is a period of time not in the thermal equilibrium state And without using the temperature information and the calorific value information acquired in the period in which the disturbance is occurring and in the period in which the disturbance is occurring, in the period in which the disturbance is not occurring without using the temperature information and the heat quantity information. And calculating the heat insulation performance of the building using the temperature information and the amount of heat information acquired are.

  The program according to the present invention is for causing a computer to function as an adiabatic performance estimation device.

  In the configuration of the present invention, the predetermination unit determines whether or not the determination condition is satisfied with respect to the temperature information and the calorie information used for the calculation by the calculation unit. Therefore, the calculation is performed by setting an appropriate determination condition. It becomes possible to select temperature information and calorie information that are not suitable for the above. As a result, there is an advantage that the reliability of the calculation result of the calculation unit can be improved.

In embodiment of this invention, it is a block diagram which shows the whole structure containing the heat insulation performance estimation apparatus. It is a figure which shows the example of arrangement | positioning in embodiment of this invention. In embodiment of this invention, it is a figure which shows the example of the indoor temperature change at the time of carrying out heating operation of the air conditioner. In embodiment of this invention, it is a figure which shows the operation example in the case of carrying out intermittent operation of an air conditioner.

  The heat insulation performance estimation apparatus described below is an apparatus that estimates an evaluation value representing the heat insulation performance of a building by evaluating the amount of heat that enters and exits through a ceiling and a wall surrounding an indoor space. In the present embodiment, the evaluation value of the heat insulation performance is a heat loss coefficient obtained by dividing the total heat loss amount by the indoor total floor area. The evaluation value of the heat insulation performance is not limited to the heat loss coefficient. For example, the evaluation value of the heat insulation performance may be a skin average heat transmissivity, a thermal resistance, or the like.

  As shown in FIG. 1, the heat insulation performance estimation device 10 includes a first acquisition unit 11 and a second acquisition unit 12. The 1st acquisition part 11 acquires the temperature information regarding the temperature of indoor 21 and outdoor 22 (refer FIG. 2). The second acquisition unit 12 acquires heat amount information related to the amount of energy consumed by the cooling device or the heating device that changes the temperature of the indoor 21. In the present embodiment, the indoor 21 represents the internal space of the building 20, and the outdoor 22 represents the outside of the building 20.

  However, the internal space of the building 20 treated as the indoor 21 may be either the whole or a part of the internal space of the building 20. In other words, not all the walls (including the ceiling and floor) surrounding the internal space need to be the boundary with the outside of the building 20, and some walls surrounding the internal space are the boundary with the outside of the building 20. Also good. In this case, the heat insulation performance of the building 20 is obtained instead of the heat insulation performance of the room of interest. Note that both the indoor 21 and the outdoor 22 may be the internal space of the building 20. That is, both the space handled as the indoor 21 and the space handled as the outdoor 22 may be included in the internal space of the building 20.

  Although it is desirable that the temperature of the space region that becomes the outdoor 22 is uniform, in reality, it is often nonuniform. Therefore, as the temperature of the outdoor 22, any one of an appropriate representative value selected from an average value, a median value, a maximum value, a minimum value, and the like of temperatures measured at multiple locations and a temperature measured at a specific location is used. It is done. Alternatively, the temperature of the outdoor 22 may be an air temperature announced as weather information for an area where the building 20 exists.

  Here, the temperature of the indoor 21 and the temperature of the outdoor 22 mean air temperature. However, the temperature of the indoor 21 is the temperature of the surface of the indoor 21 on the wall (including the ceiling and floor) that is the boundary between the indoor 21 and the outdoor 22, and the temperature of the outdoor 22 is the temperature of the surface of the outdoor 22 on the wall. It may be temperature.

  Below, it demonstrates using the structural example in which the temperature sensor 31 arrange | positioned in the indoor 21 measures the temperature of the indoor 21, and the temperature sensor 32 arrange | positioned in the outdoor 22 measures the temperature of the outdoor 22. That is, the first acquisition unit 11 acquires the temperature of the indoor 21 measured by the temperature sensor 31 and the temperature of the outdoor 22 measured by the temperature sensor 32 as temperature information. Here, since both the indoor 21 and the outdoor 22 have temperature distribution, it is desirable to provide a plurality of temperature sensors 31 and 32. In this case, a representative value of values measured by the plurality of temperature sensors 31 is used as the temperature of the indoor 21, and a representative value of values measured by the plurality of temperature sensors 32 is used as the temperature of the outdoor 22. The representative value is selected from an average value, a weighted average value, a mode value, and the like.

  If the thermal equilibrium state is present between the indoor 21 and the outdoor 22, the temperature difference between the temperature of the indoor 21 and the outdoor 22 is proportional to the amount of heat that moves through the wall that is the boundary between the indoor 21 and the outdoor 22. . That is, if the temperature of the indoor 21 is Ti and the temperature of the outdoor 22 is To, the amount of heat Q1 moving through the wall is represented by Q1 = K | Ti-To |. Here, K is a heat transmissivity and changes according to the heat insulation performance. If Ti> To, heat moves from the indoor 21 to the outdoor 22, and if Ti <To, heat moves from the outdoor 22 to the indoor 21. In this embodiment, the heat loss coefficient is used as the evaluation value of the heat insulation performance. However, since the heat loss coefficient is obtained by using the heat transmissivity, the same relationship is established when obtaining the heat loss coefficient.

  By the way, it is often the case that the heating device is operated indoors 21 for heating in winter and the cooling device is operated indoors 21 for cooling in summer. When a heating device or a cooling device (hereinafter referred to as “heat source”) is operated, a clear temperature difference occurs between the indoor 21 and the outdoor 22. Therefore, if the heat source is in operation and is in a thermal equilibrium state between the indoor 21 and the outdoor 22, the amount of heat Q1 moved through the wall is equal to the amount of heat Q2 generated from the heat source. That is, in the thermal equilibrium state, Q2 = Q1 = K | Ti-To |.

  Since the heat source consumes energy selected from electric power, gas, fuel (kerosene, gasoline) and generates heat or absorbs heat, the amount of heat Q2 generated by the heat source is calculated from the amount of energy consumed by the heat source and the energy from the heat source. It is calculated from the conversion efficiency to heat. As the conversion efficiency, for example, a coefficient of performance (COP) is used. Now, if the energy amount (for example, power consumption) consumed by the heat source in the thermal equilibrium state is E and the conversion efficiency is η, Q2 = η · E. The characteristic of the conversion efficiency η is almost determined by the specifications of the heat source and varies depending on various conditions, but may be treated as a constant value in the thermal equilibrium state. The amount of heat Q2 may be not only the amount of heat but also the amount of cold.

  Below, the heat source is the air conditioner 41 which consumes electric power, Comprising: The structure which the measurement apparatus 33 measures the magnitude | size of the power consumption of the air conditioner 41 arrange | positioned indoors 21 is demonstrated as an example. The measuring device 33 measures power consumption per unit time. The heat insulation performance estimation device 10 acquires the power consumption amount E measured by the measurement device 33 by the second acquisition unit 12 as heat amount information.

  The unit time is selected from a range of 1 second to 30 minutes, for example. The shorter the unit time, the better. However, as the unit time is shorter, the amount of data handled by the adiabatic performance estimation device 10 increases and the processing load increases. On the other hand, the small-sized air conditioner 41 for residential use is continuously operated until the temperature of the indoor 21 reaches a set temperature, but is configured to be intermittently operated when the thermal equilibrium state is reached. There are many. Considering the operation of such an air conditioner 41, it is desirable to select the unit time for measuring the power consumption from a range of about 30 seconds to 5 minutes. Of course, the unit time may be appropriately selected, and the above-described numerical value is merely an example as a guide. Furthermore, the unit time for acquiring the temperature information may be different from the unit time for acquiring the calorie information. The amount of heat information is the amount of power consumption and may fluctuate in a short time. However, since the temperature information changes relatively slowly, the unit time of the amount of heat information may be set short when changing the unit time.

  Since the coefficient of performance η of the air conditioner 41 is known, when the power consumption E measured by the measuring device 33 is used, the heat quantity Q2 generated by the air conditioner 41 is obtained as η · E.

  Since it is considered that η · E = K | Ti-To | is established in the thermal equilibrium state between the indoor 21 and the outdoor 22, the unknown heat transmissivity K is obtained from the power consumption E. That is, if the power consumption E of the air conditioner 41, the temperature Ti of the indoor 21 and the temperature To of the outdoor 22 are known, the heat insulation performance of the building 20 is required.

  As described above, the heat insulation performance estimation device 10 includes the first acquisition unit 11 that acquires temperature information and the second acquisition unit 12 that acquires heat information. The heat insulation performance of the building 20 is calculated by the calculation unit 13 using the relational expression described above, using the temperature information and the heat information.

  By the way, in the operation example mentioned above, the calculation part 13 presupposes using temperature information and calorie | heat amount information obtained in the thermal equilibrium state. Therefore, the heat insulation performance estimation apparatus 10 needs to be provided with the structure which determines whether it is a thermal equilibrium state.

  Therefore, the heat insulation performance estimation device 10 determines whether or not the thermal equilibrium state is established using the storage unit 14 that stores temperature information and heat quantity information as time-series information, and the temperature information and heat quantity information stored in the storage unit 14. And a pre-determining unit 15 for performing the processing. The calculation unit 13 uses the temperature information and the heat information acquired during the period when the predetermining unit 15 determines that the thermal equilibrium state among the temperature information and the heat information stored in the storage unit 14. Calculate

  The storage unit 14 stores a storage area for storing a constant value necessary for calculation of heat insulation performance, such as a coefficient of performance η, and a state of factors (disturbances) that affect the amount of heat in the indoor 21 in addition to the air conditioner 41. And an area. The constant value is registered in the storage unit 14 as an additional condition using the input device 42. The input device 42 may be a terminal device selected from a smartphone, a tablet terminal, a personal computer, or the like, in addition to a dedicated device attached to the heat insulation performance estimation device 10. The disturbance will be described later.

  The predetermining unit 15 evaluates whether or not the time series of the temperature information and the heat information stored in the storage unit 14 is suitable for the calculation of the heat insulation performance. Here, it demonstrates using the example which heats with the air conditioner 41. FIG. Now, as shown in FIG. 3, it is assumed that the air conditioner 41 starts operation at time t1 and ends operation at time t3. In the example illustrated in FIG. 3, it is assumed that the temperature To of the outdoor 22 does not vary greatly.

  In this case, the temperature Ti of the indoor 21 gradually increases from time t1, and the temperature Ti gradually decreases from time t3. If the time from time t1 to time t3 is sufficiently long (for example, 10 minutes or more), the temperature Ti is maintained substantially constant by the operation of the air conditioner 41 from time t2 to time t3 after time t1. The Furthermore, at time t4 after time t3, the temperature Ti of the indoor 21 becomes a temperature in a state where the air conditioner 41 is not operated.

  In the example of FIG. 3, the temperature Ti hardly changes during the period from time t2 to time t3. That is, it can be said that this period is in a thermal equilibrium state between the indoor 21 and the outdoor 22. Note that the fact that the temperature Ti hardly changes means that the variation range of the temperature Ti is, for example, ± 1 ° C. or less. In recent air conditioners 41, there is also a product that controls the temperature Ti of the indoor 21 within a fluctuation range of 1 ° C. or less with respect to a set temperature.

  As described above, since the heat insulation performance estimation device 10 acquires temperature information and heat quantity information per unit time, if it is determined whether or not it is in a thermal equilibrium state, the temperature information in a period of several times the unit time and Calorie information is required. That is, the front determination unit 15 uses the temperature information and the calorie information stored in the storage unit 14 and the variation range of the temperature information and the calorie information satisfies the determination condition in a period of several times the unit time. In addition, the period is determined as a period of thermal equilibrium. The calculation unit 13 calculates the heat insulation performance using the temperature information and the calorie information determined by the predetermination unit 15 as the period of the thermal equilibrium state.

  Here, the determination condition used by the predetermination unit 15 for determining the fluctuation range is, for example, that the fluctuation range of the temperature Ti of the indoor 21 and the fluctuation range of the temperature To of the outdoor 22 are each ± 1 ° C. or less, and The fluctuation range of the power consumption 41 is set to ± 5% or less. In addition, although these numerical values are shown as a standard in this embodiment, it is not the meaning to limit and changes suitably according to the performance of the air conditioner 41, etc.

  By the way, in order to maintain the temperature Ti of the indoor 21 at the set temperature, the air conditioner 41 adopts a configuration that operates intermittently, a configuration that changes the air flow rate, and the like. Therefore, the power consumption per unit time of the air conditioner 41 varies during the period from the time t2 to the time t3 described above. Therefore, regarding the power consumption amount as the heat amount information, it is not essential to manage the fluctuation range in order to determine the thermal equilibrium state. Furthermore, during the period when the temperature To of the outdoor 22 is substantially constant, the thermal equilibrium state is equivalent to the state where the temperature Ti of the indoor 21 is maintained substantially constant. You may determine a thermal equilibrium state only by the fluctuation | variation of Ti.

  In addition, as the power consumption used when calculating the heat insulation performance in the calculation unit 13, an integrated value of the power consumption during the period when the thermal equilibrium state is determined is used. For example, if it is assumed that temperature information for 30 minutes is used to determine whether or not a thermal equilibrium state exists, the calculation unit 13 uses the integrated value of power consumption for 30 minutes when calculating the heat insulation performance.

  Further, when the air conditioner 41 is configured to operate intermittently during the period in which the temperature Ti of the indoor 21 is maintained at the set temperature, as shown in FIG. 4, the cycle P1 between operation and stop becomes substantially constant, This period P1 reflects the heat insulation performance of the building 20. Therefore, if the temperature To of the outdoor 22 is substantially constant, the pre-determination unit 15 determines the thermal equilibrium state based on the temperature Ti of the indoor 21, and the calculation unit 13 determines the cycle of operation and stop of the air conditioner 41. The heat insulation performance may be calculated based on P1. Here, the cycle P1 between the operation and the stop of the air conditioner 41 can be obtained from the time change of the power consumption measured by the measuring device 33.

  The reason why the predetermining unit 15 determines that there is a thermal equilibrium state between the indoor 21 and the outdoor 22 is that the temperature information and the calorie information used by the calculating unit 13 can be used for calculating the heat insulation performance. The purpose is to evaluate whether or not. The predetermining unit 15 determines whether the information amount of the temperature information and the heat amount information is satisfied as well as the evaluation of the thermal equilibrium state. Specifically, the predetermining unit 15 acquires temperature information acquired by the first acquiring unit 11 for each unit time and the second acquiring unit 12 acquires for each unit time in a period for determining the thermal equilibrium state. If there is a missing amount of heat information, it is determined that the amount of information is missing. That is, if there is a lack in temperature information and heat quantity information that should be acquired every unit time in the period for determining the thermal equilibrium state, the calculation unit 13 does not use the temperature information and heat quantity information in this period for calculating the heat insulation performance. Discard it.

  By the way, although the heat quantity which the air conditioner 41 produces | generates can be calculated | required based on power consumption, if the heat source which is not the air conditioner 41 exists in the indoor 21, the heat quantity produced | generated in the indoor 21 will be estimated accurately. May not be possible. In particular, if the amount of heat generated by a heat source that is not the air conditioner 41 cannot be measured, this amount of heat cannot be incorporated into the calculation of the heat insulation performance, so the calculation unit 13 obtains the heat insulation performance of the building 20 with high accuracy. Can not be. In other words, if there is an influence of a disturbance that varies the amount of heat generated in the indoor 21, the reliability of the heat insulation performance of the building 20 obtained by the calculation unit 13 may be impaired.

  In order to increase the reliability of the building 20 obtained by the calculation unit 13, the heat insulation performance estimation apparatus 10 according to the present embodiment evaluates the reliability of the obtained heat insulation performance and the disturbance to the calculation of the heat insulation performance. And technology to reduce the effects of In other words, the heat insulation performance estimation apparatus 10 employs a process for confirming the reliability of the heat insulation performance calculated by the calculation unit 13 and a process for ensuring that the information used for the calculation by the calculation unit 13 does not include disturbance. Yes. If these processes are not employed, the error in the obtained heat insulation performance is increased, but if one is employed, the error in the heat insulation performance is reduced.

  In order to confirm the reliability of the heat insulation performance calculated by the calculation unit 13, the heat insulation performance estimation device 10 includes a result evaluation unit 16. The result evaluation unit 16 is premised on the calculation unit 13 repeatedly calculating the heat insulation performance. If the period from the operation of the air conditioner 41 to the stop is relatively long, the calculation unit 13 can calculate the heat insulation performance a plurality of times during the period. It is possible to calculate the insulation performance for each operation. The result evaluation unit 16 stores the calculated heat insulation performance value every time the calculation unit 13 calculates the heat insulation performance of the building 20, and statistically processes the calculation results for a plurality of times, thereby calculating the accuracy of the calculation result. And to evaluate the reliability of the calculation results.

  For example, for each calculation by the calculation unit 13, the result evaluation unit 16 obtains a frequency distribution related to the calculated value of the heat insulation performance, and adopts the calculated value having the maximum frequency. If this processing is performed, a more reliable result can be obtained as the number of calculations increases.

  In addition, the result evaluation unit 16 may obtain an average value and a variance every time a certain number of calculated values are obtained. If the variance is within the predetermined range, the result evaluation unit 16 adopts the average value as the value of the heat insulation performance, and discards the calculated value when the variance exceeds the predetermined range.

  Alternatively, the result evaluation unit 16 may obtain a frequency distribution with respect to the calculated value of the heat insulation performance each time a certain number of calculated values are obtained, and may employ the calculated value having the maximum frequency as the value of the heat insulation performance. In this case, the result evaluation unit 16 can evaluate the secular change of the heat insulation performance of the building 20 by evaluating the time change of the adopted value.

  As described above, the result evaluation unit 16 statistically processes the calculation value in the calculation unit 13, thereby increasing the reliability regarding the value of the heat insulation performance calculated by the calculation unit 13. The calculated value adopted by the result evaluation unit 16 is presented to the presentation device 43 through the presentation unit 17.

  On the other hand, in order that the information used for calculation by the calculation unit 13 does not include disturbance, the heat insulation performance estimation device 10 may affect the heat quantity of the indoor 21 in addition to the air conditioner 41 in the indoor 21. Extract conditions. That is, the state of solar radiation incident on the indoor 21, the number of people staying in the indoor 21, the state of operation of the equipment 44 arranged in the indoor 21, and the like are extracted. The device 44 includes a television receiver, a cooking device, etc., as well as a device serving as a heat source, such as a lighting device and a ventilation device, or a device that moves heat between the indoor 21 and the outdoor 22. Therefore, the amount of heat in the indoor 21 changes during operation of this type of equipment 44.

  The influence of disturbance can be incorporated in the calculation of thermal insulation performance.However, if the influence of disturbance is incorporated in the calculation, the number of elements used in the calculation increases and the calculation becomes complicated. Become. Therefore, it is desirable that the influence of disturbance is not included in the calculation of heat insulation performance. In other words, it is desirable not to use the temperature information and heat quantity information obtained during the period in which the disturbance occurs in the calculation of the heat insulation performance.

  As for the device 44, it is only necessary to consider disturbance caused by the device 44 operating during a part of the day. For example, even if the device 44 is a heat source, the device 44 that is always operating like a refrigerator may be incorporated into the calculation as a certain amount of heat.

  Therefore, the thermal insulation performance estimation device 10 acquires information from the solar sensor 34 that measures solar radiation and the human sensor 35 that monitors the presence of a person in the indoor 21 and acquires information related to the operation of the device 44. 3 acquisition units 18 are provided. In short, the third acquisition unit 18 acquires information on a factor that gives a disturbance to the amount of heat in the indoor 21. Specifically, the third acquisition unit 18 acquires information on the amount of solar radiation measured by the solar radiation sensor 34 and information on the presence of a person in the indoor 21 acquired by the human sensor 35. Further, the third acquisition unit 18 acquires information on whether the device 44 disposed in the indoor 21 is operating or stopped. In other words, a condition for determining whether or not a disturbance has occurred is determined as a determination condition of the front determination unit 15, and the determination condition is determined with respect to at least one of the amount of solar radiation, the presence of a person, and the operation of the device 44. It is desirable that

  Information about the device 44 can be obtained by monitoring the power consumption obtained from the measuring device 33. Further, since the power consumption of the device 44 arranged in the building 20 can be used to detect the presence of a person in the indoor 21, the human sensor 35 can be omitted. Furthermore, if the temperature of the indoor 21 is affected by solar radiation during the daytime and the times of sunrise and sunset are known, the solar radiation can be determined based on the time zone. Therefore, the solar radiation sensor 34 can also be omitted.

  Information acquired by the third acquisition unit 18 is stored in the storage unit 14. The predetermining unit 15 calculates the temperature information and the heat quantity information of the corresponding period when the information acquired by the third acquiring unit 18 confirms that no disturbance is included in light of the determination condition. To hand over. Therefore, the calculation unit 13 can calculate the heat insulation performance using temperature information and heat quantity information obtained during a period in which the indoor 21 and the outdoor 22 are in a thermal equilibrium state and does not include disturbance.

  By the way, as an index for evaluating the heat insulation performance of the building 20, a heat loss coefficient, a heat transmissivity, and the like are known. Since the heat loss coefficient is a value obtained by dividing the total heat loss amount by the total floor area, it is necessary to obtain the total floor area of the indoor 21. As the total floor area, a value shown in the design drawing of the building 20 or an actual value obtained by measuring the dimensions of the indoor 21 can be used. Also, when it is difficult to actually measure because furniture etc. are arranged in the indoor 21, or when it is only necessary to evaluate the secular change of the heat insulation performance in the building 20 and the numerical value itself does not need to be understood, A standard value based on the performance of the air conditioner 41 may be used.

  The standard value based on the performance of the air conditioner 41 is associated with the output of the air conditioner 41, and is set in accordance with the material (for example, reinforced concrete structure, wooden structure) constituting the building 20. That is, as a measure of the capacity of the air conditioner 41, a numerical value of a measure of the total floor area related to the space where the air conditioner 41 is installed is shown, and this value is used as an approximate value of the total floor area.

  When using the measured value of the total floor area, the heat insulation performance is obtained on the same basis as that of the other building 20. Therefore, the heat insulation performance of the other building 20 should be quantified and compared objectively with the heat loss coefficient. Is possible. On the other hand, when the approximate value of the total floor area is used, it can be used to evaluate the secular change of the heat insulation performance in the same building 20.

  As described above, two types of values can be used for the total floor area, but there may be a difference in the heat insulation performance obtained by the calculation unit 13 depending on which value is used. Therefore, it is necessary to distinguish which numerical value of the heat insulation performance obtained as the calculation result of the calculation unit 13 is a value obtained using which total floor area. Therefore, the heat insulation performance estimation device 10 of the present embodiment includes a selection unit 19 that selects which of the two types of total floor area is used.

  The selection unit 19 employs a configuration in which one of the two types of total floor area is selected according to a user input operation. In addition, a predetermined selection condition is set in the selection unit 19, and it is possible to select one of two types of total floor area that satisfies the selection condition. The selection condition is appropriately set such as a condition that the total floor area selected by the user by the input operation is used, or a condition that the larger one of the two types of total floor areas is used.

  Here, the adiabatic performance estimation apparatus 10 includes, as main hardware elements, a device including a processor that operates according to a program and a device that exchanges signals with an external apparatus. The device provided with the processor may be a micro processing unit (MPU) separately provided with a memory in addition to a micro controller provided integrally with the processor and the memory. In addition to being provided in a state written in a ROM (Read Only Memory), the program can be provided using a computer-readable recording medium. The program can also be provided through a telecommunication line such as the Internet.

  The heat insulation performance estimation device 10 can be incorporated into a controller of a HEMS (Home Energy Management System) that performs monitoring and control of the equipment 44 used in the building 20 by communication. Alternatively, the first acquisition unit 11, the second acquisition unit 12, the presentation unit 17, the third acquisition unit 18, the presentation device 43 and the like are realized by a terminal device, and the remaining functions of the heat insulation performance estimation device 10 are You may implement | achieve by the server which communicates via a telecommunication line with a terminal device. The terminal device is selected from a smartphone, a tablet terminal, a personal computer, or the like. The telecommunication line is selected from the Internet or a mobile communication network. The server is not limited to a configuration realized by a single computer, may be a configuration realized by a plurality of computers, and may be a cloud computing system.

  When the above-described configuration is adopted, it is possible to realize the heat insulation performance estimation device 10 by the terminal device and the server by executing an application program (so-called “application”) in the terminal device. Further, since the server performs heavy load processing such as the calculation unit 13, the predetermining determination unit 15, and the result evaluation unit 16, a large amount of hardware resources are not required for the terminal device, which facilitates implementation. In addition, the 1st acquisition part 11, the 2nd acquisition part 12, and the 3rd acquisition part 18 are implement | achieved by the controller of HEMS, and the role which relays communication between a controller and a server in a terminal device, You may make it give the role as the presentation apparatus 43. FIG.

  The heat insulation performance estimation device 10 described above can be configured to perform a process of automatically calculating the heat insulation performance of the building 20 every time the air conditioner 41 is operated. Moreover, the heat insulation performance estimation apparatus 10 can also be configured to instruct the timing of calculation by a switch or the like. However, since the result evaluation unit 16 evaluates the calculated value obtained by the calculation unit 13 by statistical processing, when the result evaluation unit 16 is provided, a configuration for automatically calculating the heat insulation performance is adopted. It is desirable.

  The heat insulation performance estimation device 10 described in the present embodiment includes a first acquisition unit 11, a second acquisition unit 12, a front determination unit 15, and a calculation unit 13. The first acquisition unit 11 acquires temperature information regarding the temperatures of the indoor 21 and the outdoor 22 in the building 20. The second acquisition unit 12 acquires heat amount information related to the amount of energy consumed by the cooling device or the heating device that changes the temperature of the indoor 21. The predetermining unit 15 determines whether the temperature information and the heat quantity information satisfy a predetermined determination condition. The calculation part 13 calculates the heat insulation performance of the building 20 using temperature information and calorie | heat amount information, when determination conditions are satisfy | filled.

  According to this configuration, the predetermination unit 15 determines whether or not the determination condition is satisfied with respect to the temperature information and the calorie information used by the calculation unit 13 for calculation. It becomes possible to select temperature information and heat quantity information that are not suitable for calculation. As a result, the reliability of the calculation result of the calculation unit 13 can be improved.

  Moreover, it is desirable that the heat insulation performance estimation device 10 includes a result evaluation unit 16. That is, the calculation unit 13 calculates the heat insulation performance of the building 20 a plurality of times, and the result evaluation unit 16 evaluates the calculation results of the heat insulation performance of the building 20 calculated by the calculation unit 13 by statistical processing.

  According to this configuration, since the calculation result of a plurality of times is statistically processed for the heat insulation performance of the building 20 obtained by the calculation unit 13, it is possible to extract a highly reliable value from the calculation result of the plurality of times. The accuracy of calculation results can be improved. Further, the reliability of the extracted value or the degree of error can be obtained by statistical processing of the calculation result.

  It is desirable that the determination condition is set so as to determine that the temperature information and the heat information are not missing in the acquired time zone. In addition, the determination condition is set with respect to the variation range of the temperature information and the calorific value information so as to determine that the temperature information and the calorific value information are acquired during a period of thermal equilibrium between the indoor 21 and the outdoor 22. It is desirable that Alternatively, the determination condition is a condition for determining whether or not a disturbance with respect to the amount of heat in the indoor 21 has occurred, and the front determination unit 15 discards the temperature information and the amount of heat information obtained during the period in which the disturbance is occurring. It is desirable to do.

  As described above, the predetermining unit 15 selects temperature information and heat quantity information suitable for the calculation according to the determination condition, so that the reliability of the calculation result can be improved. In particular, when determining the lack of temperature information and heat quantity information used for calculation, if there is a lack of information due to a communication error, etc., the amount of information necessary for the calculation can be secured by not using it for the calculation. it can. In addition, by determining the period of thermal equilibrium based on the fluctuation range of temperature information and calorie information, and using the temperature information and calorie information of the period of thermal equilibrium for the calculation, it becomes easy to calculate the insulation performance. There is a possibility that variations in calculation results can be suppressed. Alternatively, by discarding the temperature information and heat quantity information during the period in which the disturbance is occurring, it is possible to suppress variations in the calculation result due to the disturbance.

Here, when the disturbance is solar radiation, it is desirable that the determination condition is set so as to determine that the temperature information and the heat information are acquired in a night time zone in which solar radiation does not occur. In addition, when the disturbance is the presence of a person indoors, the determination condition may be set so as to determine that the temperature information and the heat quantity information are acquired in a time zone when no person is present indoors 21. desirable.

  Since solar radiation and people have a great influence on the amount of heat in the indoor 21, it becomes possible to accurately calculate the heat insulation performance of the building 20 by using temperature information and heat amount information during a period in which this kind of disturbance does not exist. .

  When the disturbance is the operation of the equipment 44 except for the cooling equipment and the heating equipment indoors, the determination condition is to determine that the temperature information and the heat information are acquired in the time zone when the equipment 44 is stopped. It is desirable that it is set. Here, the device 44 is at least one of a device that becomes a heat source during operation and a ventilation device. Devices that generate heat are, for example, lighting devices and cooking devices.

  When the lighting device or cooking device is operated, heat generated indoors is increased, and when the ventilation device is operated, the indoor heat amount is changed by being ventilated between indoors and outdoors. Therefore, since the operation of these devices 44 affects the amount of heat in the indoor 21, the heat insulation performance of the building 20 can be accurately adjusted by using temperature information and heat amount information during a period when this type of device 44 is not operating. It becomes possible to calculate.

  By the way, when the heat insulation performance is expressed by a heat loss coefficient obtained by dividing the total heat loss amount by the total floor area, the determination condition is acquired in the time zone in which the temperature information and the heat amount information are operating. It is set to determine that.

  That is, when the heat loss coefficient is used to evaluate the heat insulation performance, it is necessary to consider the inflow and outflow of heat accompanying the ventilation of the room by the ventilation equipment. Therefore, the determination condition in this case needs to be set so as to determine that the ventilation device is operating.

  Moreover, when the heat insulation performance is represented by a heat loss coefficient obtained by dividing the total heat loss amount by the total floor area, the heat insulation performance estimation device 10 desirably includes the selection unit 19. The selection unit 19 selects a value satisfying a predetermined selection condition among a value determined as an index of the performance of the cooling device or the heating device and a value based on the actual measurement value of the building 20 as the floor area.

  According to this configuration, when the heat loss coefficient is used to evaluate the heat insulation performance, it is possible to use one of the performance index of the cooling device or the heating device and the actual measurement value as the total floor area. Therefore, a numerical value for evaluating the thermal insulation performance is required as in the case of evaluating the secular change of the thermal insulation performance, but if the numerical value itself is not a problem, an index of the performance of the cooling or heating equipment is used. Can be used. Moreover, when the objective numerical value of the heat insulation performance based on the same reference | standard is required like the case where the heat insulation performance with another house is compared, the measured value of the building 20 can be used.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 10 Thermal insulation performance estimation apparatus 11 1st acquisition part 12 2nd acquisition part 13 Calculation part 15 Predetermining part 16 Result evaluation part 19 Selection part 20 Building 21 Indoor 22 Outdoor

Claims (9)

A first acquisition unit that acquires temperature information about indoor and outdoor temperatures in a building every unit time ;
A second acquisition unit that acquires, for each unit time, heat information related to the amount of energy consumed by the cooling device or the heating device that changes the indoor temperature;
A third obtaining unit that obtains information on a factor different from the cooling device and the heating device, which is a factor that gives disturbance to the indoor heat quantity in the building;
A pre-determination unit that determines whether or not the temperature information and the heat information satisfy a predetermined determination condition;
When the determination condition is satisfied, a calculation unit that calculates the heat insulation performance of the building using the temperature information and the heat information is provided,
The determination condition is set with respect to a variation range of the temperature information so as to determine that the temperature information and the heat quantity information are acquired during a period of thermal equilibrium between the indoor and the outdoor. Including a determination condition and a second determination condition set to determine whether or not a disturbance to the indoor heat quantity has occurred,
The pre-determination unit determines a period in which the variation range of the temperature information is a predetermined range based on the first determination condition as a period in which the indoor and the outdoor are in a thermal equilibrium state, and the third It is determined based on the second determination condition whether or not a disturbance has occurred in the period of the thermal equilibrium state using the information acquired by the acquisition unit,
The calculation unit is a period that is in the thermal equilibrium state without using the temperature information and the heat quantity information that are acquired in the period in which the thermal equilibrium state is not present and the period in which the thermal equilibrium state is present and the disturbance is occurring A heat insulation performance estimation device that calculates the heat insulation performance of the building using the temperature information and the heat quantity information acquired in a period in which no disturbance occurs . The calculation unit calculates the thermal insulation performance of the building multiple times,
The heat insulation performance estimation apparatus according to claim 1, further comprising a result evaluation unit that evaluates the calculation result of the heat insulation performance of the building for a plurality of times calculated by the calculation unit by statistical processing. The determination condition further includes a third determination condition set to determine that the temperature information and the heat quantity information are not missing in the acquired time zone ,
The pre-determination unit further determines, based on the third determination condition, whether or not the temperature information and the heat information are missing in the acquired time zone,
The heat insulation performance estimation according to claim 1 or 2 , wherein the calculation unit discards the temperature information and the heat amount information in the period when the pre-determination unit determines that a lack occurs in the period for determining the thermal equilibrium state. apparatus.   The disturbance is solar radiation,
  The second determination condition is set so as to determine that the temperature information and the heat information are acquired in a night time zone in which solar radiation does not occur.
  The heat insulation performance estimation apparatus according to claim 1 or 2.   The disturbance is the presence of a person in the room;
  The second determination condition is set so as to determine that the temperature information and the heat quantity information are acquired in a time zone in which no person is present indoors.
  The heat insulation performance estimation apparatus according to claim 1 or 2.   The disturbance is an operation of the equipment excluding the cooling device and the heating device in the indoor, the device is at least one of a device that becomes a heat source during operation and a ventilation device,
  The second determination condition is set so as to determine that the temperature information and the heat quantity information are acquired in a time zone when the device is stopped.
  The heat insulation performance estimation apparatus according to claim 1 or 2.   The heat insulation performance is represented by a heat loss coefficient obtained by dividing the total heat loss amount by the total floor area,
  The second determination condition is set so as to determine that the temperature information and the heat quantity information are acquired in a time zone in which the ventilation device is operating.
  The heat insulation performance estimation apparatus according to claim 6.   The heat insulation performance is represented by a heat loss coefficient obtained by dividing the total heat loss amount by the total floor area,
  A selection unit that selects a value satisfying a predetermined selection condition among a value determined as an index of performance of the cooling device or the heating device and a value based on an actual measurement value of the building as the total floor area Further prepare
  The heat insulation performance estimation apparatus according to claim 1 or 2.   The program for functioning a computer as the heat insulation performance estimation apparatus of any one of Claims 1-8.

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