Building indoor environment assessment method and cold source system control method

Abstract

The invention relates to the technical field of indoor environment assessment, in particular to a building indoor environment assessment method and a cold source system control method. The building indoor environment assessment method comprises the following steps: establishing a three-dimensional model; determining the irradiation range of the light facing surface of the object building according to the light irradiation angle data; the irradiated area of each irradiated space is determined; determining irradiation heat received by each irradiated space according to the meteorological data of the area where the object building is located, the irradiated area and the material of the light facing surface; and determining the indoor temperature of each irradiated space according to the irradiation heat. According to the method, the indoor environment after the building is put into use can be predicted and evaluated, an important reference is provided for building design and building management, the matching between supporting facilities in the design stage and actual use requirements is improved, additional supporting equipment after the building is put into use is avoided, and the reference value of early-stage budgeting and planning is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of indoor environment assessment, and in particular to a building indoor environment assessment method and a cold source system control method. Background Art

[0002] In architectural design and construction management, the problem of pre-configured supporting facilities failing to meet actual usage needs often occurs, resulting in the need to add additional equipment after the building is put into use. This not only wastes manpower and material resources, but also directly affects the user experience, while reducing the reference value of the initial budget and planning.

[0003] In view of this, this application is hereby filed. Summary of the invention

[0004] The first purpose of the present invention is to provide a building indoor environment assessment method, which can predict and evaluate the indoor environment of the building after it is put into use, providing an important reference for building design and building management, helping to improve the matching of supporting facilities in the design stage with actual use needs, avoiding the need to add additional supporting equipment after the building is put into use, and ensuring the reference value of preliminary budgeting and planning.

[0005] The second object of the present invention is to provide a cold source system control method, which can effectively reduce the overall energy consumption of the cold source system operation on the basis of ensuring basic refrigeration needs, which has positive significance for further reducing power waste and improving energy efficiency.

[0006] The embodiment of the present invention is achieved as follows: A building indoor environment assessment method comprises the following steps: S1. Establish a three-dimensional model of the area where the target building is located.

[0007] S2. Determine the light irradiation angle data in the three-dimensional model according to the longitude and latitude coordinates of the target building, and determine the irradiation range of the light-facing surface of the target building according to the light irradiation angle data.

[0008] S3. Determine the internal spaces of the target building within the irradiation range as irradiated spaces, and determine the irradiated area of ​​each irradiated space.

[0009] S4. Determine the radiation heat received by each irradiated space based on the meteorological data of the area where the target building is located, the irradiated area and the material of the light-facing surface.

[0010] S5. Determine the indoor temperature of each irradiated space based on the irradiated heat.

[0011] Further, in S3, the irradiated area is the window area of ​​the irradiated space within the irradiation range.

[0012] Furthermore, the building indoor environment assessment method further includes the following steps: S6. Determine the light that actually enters the room through the windows of each irradiated space, determine the direct irradiation surface of these light rays in the irradiated space, and when there is a carpet in the directly irradiated surface, simulate and obtain the light exposure simulation data of the directly irradiated surface when there are water droplets on the glass of the window area corresponding to the irradiated area, and judge whether there is a combustion risk of the carpet based on the light exposure simulation data.

[0013] S7. If the judgment result of S6 is that there is a risk of combustion, before cleaning the window area corresponding to the irradiated area, it is prompted to completely cover the window area corresponding to the irradiated area.

[0014] A cold source system control method comprises the following steps: D1. Use the above-mentioned building indoor environment assessment method to determine the radiation heat received by each irradiated space.

[0015] D2. Determine the cooling gap of each irradiated space according to the irradiated heat, and control the cold source system based on the cooling gap to supplement the cooling capacity of each irradiated space.

[0016] Furthermore, the cold source system control method also includes the step: D3, controlling the rolling curtain to block the window area corresponding to the irradiated area.

[0017] In S4, the materials of the light-facing surface include: the material of the window glass and the material of the roller blinds.

[0018] Furthermore, the cold source system control method further includes the following steps: D4. Determine the indoor natural light intensity of each irradiated space based on the three-dimensional model, meteorological data, light angle data, the material of the light-facing surface and the degree of window shielding by roller blinds.

[0019] D5. Set appropriate light intensity, and determine the indoor light intensity gap of the irradiated space based on the indoor natural light intensity and the appropriate light intensity. Based on the indoor light intensity gap, control the lighting equipment in the irradiated space to supplement the brightness.

[0020] Furthermore, the cold source system control method further includes the following steps: D6. Determine the light that shines into the room through the window of each irradiated space based on the three-dimensional model, meteorological data and light irradiation angle data, and use the light with light intensity greater than or equal to the intensity threshold as the evaluation light.

[0021] D7. In the direction perpendicular to the light-facing surface, determine the irradiation distance of the evaluation light on the ground or ceiling of the irradiated space.

[0022] D8. Set a distance threshold to control the roller blinds to block the assessed light whose illumination distance is greater than or equal to the distance threshold.

[0023] Furthermore, the evaluated light includes: direct light and light reflected from other exterior walls of the building.

[0024] Furthermore, the cold source system control method also includes the step: D9, adjusting the release length of the roller blind curtain to minimize the total energy consumption of the lighting equipment and the cold source system.

[0025] The beneficial effects of the technical solution of the embodiment of the present invention include: The building indoor environment assessment method provided by the embodiment of the present invention can predict and evaluate the indoor temperature of each irradiated space after the building is put into use, so as to facilitate the configuration of supporting facilities with appropriate power for the corresponding irradiated space in the design stage (including but not limited to: lighting, heating, cooling, sun protection, etc.). This can improve the matching degree between the supporting design in the design stage and the actual use requirements, and optimize the user experience after actual use.

[0026] In general, the building indoor environment assessment method provided by the embodiment of the present invention can predict and evaluate the indoor environment of the building after it is put into use, providing an important reference for building design and building management, helping to improve the matching of supporting facilities in the design stage with actual use needs, avoiding the need to add additional supporting equipment after the building is put into use, and ensuring the reference value of preliminary budgeting and planning.

[0027] The cold source system control method provided by the embodiment of the present invention realizes customized and quantitative supplementation of corresponding additional cooling capacity to the irradiated space according to the actual lighting conditions of the target building and the actual heat intrusion of the irradiated space under sunlight, thereby realizing accurate distribution and scheduling of cooling capacity.

[0028] Compared with the traditional cold source system control, it breaks the unified control and unified supply mode and realizes the cooling allocation based on the actual heat intrusion situation. On the one hand, it ensures the stability of the cooling effect of the irradiated space, while avoiding excessive cooling caused by excessive cold transport to areas outside the irradiated space, effectively improving the utilization rate of electric energy and avoiding unnecessary waste of electric energy.

[0029] In general, the cold source system control method provided by the embodiment of the present invention can effectively reduce the overall energy consumption of the cold source system while ensuring basic refrigeration needs, which is of positive significance for further reducing power waste and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 Schematic diagram for determining the irradiation distance. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Generally speaking, the terms "include" and "comprises" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0035] The flowcharts used in this specification are used to illustrate the operations performed by the system according to the embodiments of this specification. It is understood that the operations of each step are not necessarily performed precisely in order. On the contrary, the steps can be processed in reverse order or simultaneously. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0036] In order to overcome the shortcomings of the prior art, this embodiment provides a building indoor environment evaluation method, which includes the following steps: S1. Establish a three-dimensional model of the area where the target building is located. The three-dimensional model is constructed based on the actual layout of the area where the target building is located, and includes not only the model of the target building, but also the models of other buildings and other obstructions (including but not limited to: trees) around the target building.

[0037] S2. Determine the light irradiation angle data in the three-dimensional model according to the longitude and latitude coordinates of the target building, and determine the irradiation range of the light-facing surface of the target building according to the light irradiation angle data. Among them, the light irradiation angle data reflects the irradiation angle of light at the location of the target building in different seasons and different time periods of each day. The light-facing surface refers to the surface of the target building that is directly exposed to sunlight. During the day, as the sunlight irradiation angle changes, the light-facing surface of the target building changes. The irradiation range refers to the range on the light-facing surface that is directly exposed to sunlight. This is because the target building may be blocked by other surrounding buildings and other obstructions, resulting in the inability of the sunlight to illuminate the entire light-facing surface. The irradiation range can be determined based on the three-dimensional model and the light irradiation angle data.

[0038] S3. Determine the internal space in the target building that is within the irradiation range, that is, the internal space with at least one wall and at least a part of the wall surface within the irradiation range as the irradiated space, and determine the irradiated area of ​​each irradiated space. The irradiated area is the area of ​​the wall surface within the irradiation range of the irradiated space. It should be noted that the "wall surface area" here is a general term for the wall area and the window area.

[0039] S4. Determine the irradiated heat received by each irradiated space based on the meteorological data of the area where the target building is located, the irradiated area, and the material of the light-facing surface. That is, calculate the heat that enters the irradiated space under the sunlight. This is related to the external light intensity, the size of the irradiated area, and the heat insulation / light blocking performance of the area corresponding to the irradiated area. S5. Determine the indoor temperature of each irradiated space based on the irradiated heat.

[0040] Through this design, the indoor temperature of each irradiated space after the building is put into use can be predicted and evaluated, which makes it easier to configure supporting facilities with appropriate power for the corresponding irradiated space during the design phase (including but not limited to: lighting, heating, cooling, sun protection, etc.). This can improve the matching degree between the supporting design in the design phase and the actual use needs, and optimize the user experience after actual use.

[0041] In general, the building indoor environment assessment method provided by the embodiment of the present invention can predict and evaluate the indoor environment of the building after it is put into use, providing an important reference for building design and building management, helping to improve the matching of supporting facilities in the design stage with actual use needs, avoiding the need to add additional supporting equipment after the building is put into use, and ensuring the reference value of preliminary budgeting and planning.

[0042] In this embodiment, considering that the walls of general buildings have good thermal insulation performance, in S3, the irradiated area is the window area of ​​the irradiated space within the irradiation range. That is, only the window area within the irradiation range can be counted and used as the basis for calculating the irradiated heat.

[0043] In particular, for buildings with poor wall insulation performance, it is usually necessary to count the wall area within the irradiation range, calculate the radiant heat for the wall and windows separately, and finally determine the total radiant heat based on the radiant heat of the two.

[0044] Furthermore, the building indoor environment assessment method further includes the following steps: S6. Determine the light that actually enters the room through the windows of each irradiated space, determine the direct irradiation surface of these lights in the irradiated space, and when there is a carpet in the direct irradiation surface, simulate the light exposure simulation data of the direct irradiation surface when there are water droplets on the glass of the window area corresponding to the irradiated area, and judge whether the carpet has a combustion risk based on the light exposure simulation data. When there are water droplets attached to the window area corresponding to the irradiated area, the part where the water droplets are located is likely to form an optical structure similar to a convex lens. The light exposure simulation data obtained by simulating the lighting conditions can be used to evaluate the fire risk of the carpet. This poses a safety hazard when cleaning the exterior walls of the target building in summer.

[0045] S7. If the judgment result of S6 is that there is a risk of burning, before cleaning the window area corresponding to the irradiated area, it is prompted to completely cover the window area corresponding to the irradiated area. Generally speaking, the high temperature resistance and flame retardancy of curtains are better than carpets, so the safety hazards caused by window cleaning can be effectively reduced.

[0046] After a building is put into use, the cold source system of the building (especially a high-rise building) consumes a lot of cold source during operation, and the cooling effect often fails to meet expectations. For high-rise buildings, there are often some rooms with poor cooling effects. This results in the building's cold source system often needing to operate at high load, which in turn further increases the overall energy consumption of the cold source system.

[0047] The inventor of this application has found that the above problems are directly related to the cold source management of the building. If the speed at which external heat invades the building is too fast, the consumption rate of the cold source will increase. Therefore, the overall energy consumption of the cold source system can be reduced by controlling the speed at which external heat invades the building.

[0048] In order to overcome the above problems, this embodiment further provides a cold source system control method, which includes the following steps: D1. Use the above-mentioned building indoor environment assessment method to determine the radiation heat received by each irradiated space.

[0049] D2. Determine the cooling gap of each irradiated space according to the irradiated heat. The more irradiated heat, the larger the cooling gap. According to actual needs, the value corresponding to the irradiated heat can be directly used as the value of the cooling gap, or a proportional coefficient can be set between the two. This can be flexibly set according to actual needs, and this application does not make specific restrictions. Based on the cooling gap, the cold source system is controlled to supplement the cooling capacity of each irradiated space.

[0050] Through the above design, it is possible to customize and quantitatively supplement the corresponding additional cooling capacity to the irradiated space according to the actual lighting conditions of the target building and the actual heat intrusion of the irradiated space under sunlight, thereby achieving accurate distribution and scheduling of cooling capacity.

[0051] Compared with the traditional cold source system control, it breaks the unified control and unified supply mode and realizes the cooling allocation based on the actual heat intrusion situation. On the one hand, it ensures the stability of the cooling effect of the irradiated space, while avoiding excessive cooling caused by excessive cold transport to areas outside the irradiated space, effectively improving the utilization rate of electric energy and avoiding unnecessary waste of electric energy.

[0052] In general, the cold source system control method provided in this embodiment can effectively reduce the overall energy consumption of the cold source system while ensuring basic refrigeration needs, which is of positive significance for further reducing power waste and improving energy efficiency.

[0053] Furthermore, in order to realize automatic integrated control of the cold source system of the target building, the curtains of the target building can be uniformly equipped with automated roller blinds, which are uniformly controlled by the control end to realize automatic management of the release and retraction of the roller blinds.

[0054] Correspondingly, the cold source system control method also includes the step: D3, controlling the rolling curtain to block the window area corresponding to the irradiated area.

[0055] At this time, since the window area corresponding to the irradiation area is blocked by the roller blinds, it is necessary to take into account the blocking effect of the roller blinds on sunlight when calculating the radiant heat, that is, to correct the radiant heat according to the material of the roller blinds (the blocking effect on sunlight).

[0056] In S4, the materials of the light-facing surface include: the material of the window glass and the material of the roller blinds.

[0057] When calculating the radiant heat, if the window is completely blocked by the roller blind, then the radiant heat within the window needs to be corrected according to the material of the roller blind. If the roller blind only blocks part of the window, then only the radiant heat of the blocked part of the window needs to be corrected.

[0058] Furthermore, the cold source system control method further includes the following steps: D4. Determine the indoor natural light intensity of each irradiated space based on the three-dimensional model, meteorological data, light angle data, the material of the light-facing surface, the material of the roller blinds, and the degree of window shielding by the roller blinds.

[0059] D5. Set the appropriate light intensity (which can be flexibly set according to actual needs), and determine the indoor light intensity gap of the irradiated space according to the indoor natural light intensity and the appropriate light intensity. Specifically, when the natural light intensity is less than the appropriate light intensity, the lighting equipment in the irradiated space is used to supplement the brightness so that the actual brightness in the irradiated space reaches the brightness corresponding to the appropriate light intensity; when the natural light intensity is equal to the appropriate light intensity, there is no need to use the lighting equipment in the irradiated space to supplement the brightness, and the lighting equipment in the irradiated space can be turned off; when the natural light intensity is greater than the appropriate light intensity, the roller blinds can be controlled to continue to be released to further block the windows, thereby reducing the light entering the irradiated space, so that the natural light intensity is equal to the appropriate light intensity, and at this time, the lighting equipment in the irradiated space can be turned off.

[0060] It should be noted that when the release amount of the rolling curtain changes, it may cause the degree of shading of the window area corresponding to the irradiated area to change. At this time, it is necessary to synchronously correct the allocation of cold energy by the cold source system, such as recalculating the radiant heat.

[0061] Furthermore, the cold source system control method further includes the following steps: D6. Determine the light that shines into the room through the windows of each irradiated space based on the three-dimensional model, meteorological data, and light angle data, and use the light with light intensity greater than or equal to the intensity threshold as the evaluation light. It should be noted that this refers to the light that "shines into" the room through the windows within the irradiation range, not the light that successfully shines into the room. The light that "shines into" the room includes the light that successfully shines into the room and the light that is blocked by the roller blinds.

[0062] D7. Determine the irradiation distance of the evaluation light on the floor or ceiling of the irradiated space in the direction perpendicular to the light-facing surface. The irradiation distance refers to the distance between the projection point of the light on the floor or ceiling of the irradiated space and the corresponding light-facing surface in the direction perpendicular to the light-facing surface. Figure 1As shown, light s is irradiated to the floor of the irradiated space through the window on the light-facing surface, and the projection point of light s on the floor is point D. Then, the irradiation distance of light s is the length of line segment HD.

[0063] D8. Set a distance threshold (the specific value can be flexibly set according to actual needs) to control the roller blinds to block the assessed light whose irradiation distance is greater than or equal to the distance threshold.

[0064] This design can, on the one hand, prevent light rays with a long irradiation distance from directly entering the irradiated space, and reduce the direct sunlight exposure to the eyes of people in the irradiated space. On the other hand, it can reduce the heat entering the irradiated space, reduce the irradiated heat, and facilitate reducing the energy consumption of the cold source system.

[0065] The evaluated light includes: directly incident light and light reflected from the outer walls of other buildings. This can effectively eliminate the glare caused by the reflected light from the outer walls of other surrounding buildings.

[0066] Furthermore, when determining the indoor natural light intensity, the cold source system control method also includes the steps of: determining the light actually shining into the room through the windows of each irradiated space, determining the direct irradiation surface of these lights in the irradiated space, and determining the indoor natural light intensity based on the material of the direct irradiation surface.

[0067] It should be noted that this refers to the light that "actually shines into" the room through the window, and does not include the light blocked by roller blinds.

[0068] Generally speaking, the better the reflective performance of the material of the directly illuminated surface, the higher the intensity of natural light in the room will be, such as light-colored floor tiles. In the case of carpets, carpets usually have a strong light absorption ability, and the intensity of natural light in the room will be slightly lower.

[0069] Correspondingly, the cold source system control method further includes the step: D9, adjusting the release length of the roller blind curtain to minimize the total energy consumption of the lighting equipment and the cold source system.

[0070] Through this design, closed-loop synchronous adjustment of the lighting equipment and cooling system of the target building is achieved. On the basis of ensuring sufficient lighting intensity and cooling effect in the target building, it can help further reduce the overall energy consumption of the target building.

[0071] In summary, the cold source system control method provided in the embodiment of the present invention can effectively reduce the overall energy consumption of the cold source system while ensuring basic refrigeration needs, which is of positive significance for further reducing power waste and improving energy efficiency.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A building indoor environment assessment method, characterized in that: The steps include: S1. Establish a three-dimensional model of the area where the target building is located; S2. determining light irradiation angle data in the three-dimensional model according to the longitude and latitude coordinates of the target building, and determining the irradiation range of the light-facing surface of the target building according to the light irradiation angle data; S3, determining the internal space of the target building within the irradiation range as the irradiated space, and determining the irradiated area of ​​each of the irradiated spaces; S4, determining the radiation heat received by each irradiated space according to the meteorological data of the area where the target building is located, the irradiated area and the material of the light-facing surface; S5. Determine the indoor temperature of each irradiated space according to the irradiated heat.

2. The building indoor environment assessment method according to claim 1, characterized in that: In S3, the irradiated area is the window area of ​​the irradiated space within the irradiation range.

3. The building indoor environment assessment method according to claim 1, characterized in that: The building indoor environment assessment method also includes the following steps: S6, determining the light actually irradiated into the room through the window of each irradiated space, determining the direct irradiation surface of these light rays in the irradiated space, and when there is a carpet in the directly irradiated surface, simulating to obtain light irradiation simulation data of the directly irradiated surface when there are water drops on the glass of the window area corresponding to the irradiated area, and judging whether there is a combustion risk of the carpet according to the light irradiation simulation data; S7. If the judgment result of S6 is that there is a risk of combustion, before cleaning the window area corresponding to the irradiated area, a prompt is given to completely cover the window area corresponding to the irradiated area.

4. A cold source system control method, characterized in that: The steps include: D1. Determine the radiation heat received by each irradiated space by using the building indoor environment assessment method according to claim 1 or 2; D2. Determine the cooling capacity gap of each irradiated space according to the irradiated heat, and control the cold source system to supplement cooling capacity for each irradiated space based on the cooling capacity gap.

5. The cold source system control method according to claim 4, characterized in that: The cold source system control method further comprises the step of: D3, controlling the rolling curtain to shield the window area corresponding to the irradiated area; In S4, the material of the light-facing surface includes: the material of the window glass and the material of the roller blind.

6. The cold source system control method according to claim 5, characterized in that: The cold source system control method further comprises the following steps: D4, determining the indoor natural light intensity of each irradiated space according to the three-dimensional model, the meteorological data, the light irradiation angle data, the material of the light-facing surface and the degree of shielding of the window by the roller blinds; D5. Setting an appropriate light intensity, and determining an indoor light intensity gap of the irradiated space according to the indoor natural light intensity and the appropriate light intensity, and controlling the lighting equipment in the irradiated space to supplement the brightness based on the indoor light intensity gap.

7. The cold source system control method according to claim 6, characterized in that: The cold source system control method further comprises the following steps: D6. Determine the light that penetrates through the window of each irradiated space and irradiates into the room according to the three-dimensional model, the meteorological data and the light irradiation angle data, and use the light whose light intensity is greater than or equal to the intensity threshold as the evaluation light; D7. Determine the irradiation distance of the evaluation light on the ground or ceiling of the irradiated space in a direction perpendicular to the light-facing surface; D8. Setting a distance threshold, and controlling the rolling curtain to block the evaluation light whose irradiation distance is greater than or equal to the distance threshold.

8. The cold source system control method according to claim 7, characterized in that: The evaluation light includes: directly incident light and light reflected from other building exterior walls.

9. The cold source system control method according to claim 6, characterized in that: The cold source system control method further includes the step: D9, adjusting the release length of the roller blind to minimize the total energy consumption of the lighting device and the cold source system.

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