A light-thermal balance dynamic building shading system and regulation method capable of realizing schedule presetting and instant response

Abstract

The application discloses a light-heat balance dynamic building sun-shading system and a regulation and control method, which can realize schedule presetting and instant response. The system comprises a sun-shading component unit, a schedule presetting database and an intelligent control system. The schedule presetting database comprises a set of height position collections of the horizontal dynamic sun-shading component in different time periods in different seasons of a year under local meteorological parameters. The intelligent control system returns the detection information of a building outdoor meteorological parameter sensor and an indoor meteorological parameter sensor to the schedule presetting database for identification and comparison, and controls the horizontal dynamic sun-shading component to move to an optimal position of indoor light-heat balance. The building sun-shading system can avoid neglecting the influence of one party due to over-strengthening the characteristics of one variable of light and heat, and can also avoid the problem of repeated or even conflicting design performance due to independent design of each item.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building technology, in particular to a light-heat balance dynamic building shading system and control method capable of realizing schedule presetting and instant response. BACKGROUND

[0002] Natural lighting and solar heat radiation are a set of closely related variables. For hot summer and cold winter regions, this set of variables presents a contradictory influence of one body and two sides. On the one hand, natural lighting can reduce the energy consumption required for artificial lighting and meet the dual needs of physiological and psychological health of indoor personnel; on the other hand, excessive introduction of natural lighting will increase the solar radiation heat gain of the room, leading to an increase in indoor temperature, which will increase the air conditioning cooling energy consumption in summer. From the perspective of building light and heat environment comfort, how to balance the relationship between natural lighting and solar heat radiation is a key problem for green buildings in hot summer and cold winter regions to achieve comfort, energy saving and high efficiency.

[0003] Currently, the main way for building design to deal with light and heat problems is to design natural lighting and heat radiation control independently. Taking the green building design standard of Jiangsu Province as an example, two independent parts of building sunshine and natural lighting design and building shading design are used to deal with the problem. In terms of natural lighting design, it mainly involves the control of lighting area, room shape and size (depth, width), lighting surface material (transmittance), selection of indoor surface material (reflectivity) and light guide measures. In terms of shading design, it mainly involves the control of lighting area and orientation, body self-shading, lighting surface material and structure (heat insulation performance), shading components and control schedule. Among them, the control of lighting area and the selection of light-transmitting materials are proposed to control the requirements in natural lighting and shading design, respectively. Other control regulations are designed to meet the requirements of single natural lighting design or shading design. However, this single-target special design ignores the systematization of the design and the effect of the mutual influence between variables on the light-heat coupling problem, which is not conducive to judging the overall law and is difficult to obtain a global optimal solution.

[0004] On the basis of independent design, in order to deal with the contradictory influence of natural lighting and solar heat radiation in hot summer and cold winter regions, the existing technology mainly adopts two ideas:

[0005] One is the intelligentization of building shading, and the shading components can be dynamically adjusted according to the indoor and outdoor environmental changes to achieve the optimal performance. For example, the utility model patent with the patent number ZL202121777697.5 discloses a comfort intelligent outdoor shading system based on light-heat coupling, which uses comprehensive scoring to judge the comfort of indoor light and heat environment and the influence of different louver angles on energy consumption, and realizes the thermal comfort regulation and control of indoor personnel through intelligent control of shading adjustment module. However, this comprehensive evaluation method needs to repeat scoring and building performance simulation calculation every time the conditions change, which is not conducive to instant adjustment and response to various scene changes.

[0006] Second, the method of regulating light-heat coupling is improved. For example, the invention patent with patent number ZL202110158781.7 discloses a light-heat dynamic balance regulation method of building skin variable component, which determines the light-heat environment description index, parameterizes modeling, simulates all year round, and summarizes the all-year comprehensive optimal variable component opening state automatic control collection to realize the joint optimization of light environment and thermal environment of building external skin variable component.

[0007] However, this method still has some problems,

[0008] First, the schedule setting based on simulation can only reflect the overall situation of the local climate, ignoring the complexity of the real weather, and the variable component cannot make accurate response according to the real-time weather change and room personnel change;

[0009] Second, there is a lack of evaluation means to test the light-heat balance regulation effect achieved by the variable component, and the regulation method lacks consideration of real factors such as building material performance and equipment operation accuracy;

[0010] Third, the specific sunshade equipment such as louver and roller blind and the integrated intelligent control mode are disconnected with architectural design, and cannot realize the comprehensive optimization of architect-led scheme deepening and component performance.

[0011] In view of the above existing technology, it is necessary to reasonably improve the current light-heat balance dynamic building sunshade to meet the requirements of building environment regulation. SUMMARY

[0012] In view of the above technical problems, the present application provides a light-heat balance dynamic building sunshade system and regulation method which can realize schedule presetting and instant response. The system and method can better realize the overall optimal design of building sunshade system, quantification, higher energy saving, more efficient calculation and higher intelligence.

[0013] In order to achieve the above technical purpose, the technical scheme adopted by the present application is:

[0014] A light-heat balance dynamic building sunshade system which can realize schedule presetting and instant response, comprising a sunshade component unit, a schedule presetting database and an intelligent control system;

[0015] The sunshade component unit is arranged at a semi-outdoor interface and connected with the building main structure, forming a component unit integrating building sunshade, heat insulation and indoor lighting regulation; the sunshade component unit comprises vertical fixed sunshade partition plates and horizontal dynamic sunshade components; the vertical fixed sunshade partition plates are installed between the structures of adjacent two floors; the horizontal dynamic sunshade components are connected with the vertical fixed sunshade partition plates through pulleys and fixed supports, and can move up and down between adjacent vertical fixed sunshade partition plates;

[0016] The schedule preset database comprises a set of height position collections of the horizontal dynamic sunshade member in different time periods of different seasons in a year under local meteorological parameters, and the height position collections are specifically obtained by the following steps:

[0017] S1, import the building physical model, and equivalent the moving track of the horizontal dynamic sunshade member in the vertical direction to the horizontal fixed sunshade member at different heights, and perform hourly simulation calculation on the indoor illuminance and temperature under the influence of the horizontal fixed sunshade member at different heights according to the local meteorological parameters;

[0018] S2, evaluate the light and thermal environment performance of the horizontal fixed sunshade member at different heights at a specific time i, wherein the indoor illuminance is used as the evaluation index of the light environment, and the predicted mean vote (PMV) and the predicted percentage of dissatisfied (PPD) are used as the evaluation index of the thermal environment;

[0019] S3, compare the de-dimensioned results of the light and thermal environment evaluation results of the horizontal fixed sunshade member at different heights with the comfort range gap, and the result is represented by the light and thermal environment comprehensive gap value k of the horizontal fixed sunshade member at time i; the comfortable illuminance range of the light environment is 300-2000 lux, and the PMV-PPD range of the comfortable thermal environment is -0.5 to +0.5; when the light and thermal environment comprehensive gap value k of the horizontal fixed sunshade member at time i is the smallest, the corresponding horizontal fixed sunshade member height value is the optimal height value of the light and thermal environment comprehensive at the specific time i, and at this time, it is considered that the indoor is in the light and thermal balance state;

[0020] S4, summarize the optimal height value of the light and thermal environment comprehensive of the horizontal fixed sunshade member at each time, and the height position collection formed is the schedule preset database of the horizontal dynamic sunshade member;

[0021] The intelligent control system returns to the schedule preset database according to the detection information of the building outdoor meteorological parameter sensor and the indoor meteorological parameter sensor, identifies and compares, and controls the horizontal dynamic sunshade member to move to the optimal position of the indoor light and thermal balance.

[0022] The calculation of the light and thermal environment comprehensive gap value k of the horizontal fixed sunshade member at time i

[0023] The formula is as follows:

[0024]

[0025] k=Dz+Dp (3)

[0026] In the formula, z i , p i are the calculation values of the indoor light and thermal environment indexes under the influence of the horizontal fixed sunshade member at time i.

[0027] dz, dp is the gap value between the evaluation result of indoor light and heat environment and the comfort range under the influence of horizontal fixed sunshade component at i moment;

[0028] Dz, Dp is the de-dimensioning result of the gap between the evaluation result of indoor light and heat environment and the comfort range under the influence of horizontal fixed sunshade component at i moment.

[0029] The vertical fixed sunshade partition is sequentially provided with a structural layer, a thermal insulation layer and a veneer from inside to outside, the thermal insulation layer is used to enhance the heat insulation performance of the vertical fixed sunshade partition; a side groove of the vertical fixed sunshade partition body is reserved to place a track side pulley and a track motor respectively, a motor push head is installed at the lower part of the side groove for placing the track motor, the motor push head is connected with the horizontal dynamic sunshade component through a fixed support; the upper part of the track motor groove is connected with a motor power line, and the motor power line is used to connect the motor with each layer of multifunctional group controller.

[0030] The upper part of the structural layer of the horizontal dynamic sunshade component is provided with a light-reflecting plate or is wrapped with a light-reflecting material on the surface of the structural layer.

[0031] The intelligent control system comprises an outdoor meteorological parameter sensor, an indoor meteorological parameter sensor, a storage module, a running adjustment module and an adjustment mechanism, wherein,

[0032] The outdoor meteorological parameter sensor is used to record annual hourly microclimate data, including black ball temperature, dry ball temperature, wet ball temperature, relative humidity, atmospheric pressure, solar radiation intensity and air flow speed data;

[0033] The indoor meteorological parameter sensor is used to collect indoor light intensity, black ball temperature, dry ball temperature, wet ball temperature, relative humidity, air flow speed data;

[0034] The storage module comprises a first memory, the first memory stores a plurality of first program codes, and a schedule preset database is stored;

[0035] The running adjustment module comprises a second memory and a processor, the second memory stores a plurality of second program codes, the second program codes are loaded and run by the processor, and the height position of the horizontal dynamic sunshade component is converted into control information;

[0036] The adjustment mechanism comprises a multifunctional group controller and a motor, the monitoring computer controls each layer of multifunctional group controller, the multifunctional group controller is connected with the motor of each layer of horizontal dynamic sunshade component, and drives the horizontal dynamic sunshade component to move up and down in the vertical direction.

[0037] The application further discloses a regulation and control method of the light and heat balance dynamic building sunshade system based on the schedule preset and instant response, which comprises the following formal operation steps:

[0038] A, corresponding room indoor nobody uses or one hour without reservation use, do not open intelligent control system, horizontal dynamic sunshading member remains in place;

[0039] B, corresponding room indoor somebody uses or one hour will have somebody use, and room indoor illumination and temperature meet light, heat environment comfortable range without opening lamps and air conditioning, the light environment comfortable illumination range is 300-2000 lux, the heat environment comfortable temperature range is 18-22 DEG C, do not open intelligent control system, horizontal dynamic sunshading member remains in place;

[0040] C, corresponding room indoor somebody uses or one hour will have somebody use, and room indoor illumination and temperature do not meet light, heat environment comfortable range, open intelligent control system, adjust horizontal dynamic sunshading member to the height position corresponding to the season period in the schedule preset database pre-set.

[0041] It also includes optimization adjustment mode, for correcting the height value of horizontal dynamic sunshading member pre-set in the schedule preset database, including the following steps:

[0042] D, somebody uses, according to formal operation mode, that is, step A-C operation;

[0043] E, nobody uses, if optimization adjustment mode is enabled, then open intelligent control system, adjust horizontal dynamic sunshading member to the height position corresponding to the season period in the schedule preset database pre-set, the height value corresponding to the time i is recorded as l i , and record the microclimate data Q measured by indoor meteorological parameter sensor, including indoor illumination x i And temperature y i ;

[0044] F, if indoor illumination x i And temperature y i Meet light, heat environment comfortable range, then do not adjust the height position of horizontal dynamic sunshading member, the data (Q→l i ) is marked as verification;

[0045] G, if indoor illumination x i And temperature y i Do not meet light, heat environment comfortable range, then adjust horizontal dynamic sunshading member height value to l i+1 , simultaneously record indoor illumination x i+1 And temperature y i+1 Measured by indoor meteorological parameter sensor at this time, and compare and calculate with the previous data, the calculation formula is as follows:

[0046]

[0047]

[0048] a0, a1 are lower and upper limits of the indoor light environment comfort range; b0, b1 are lower and upper limits of the indoor thermal environment comfort range;

[0049] G01: If dx+dy=0, i.e. the changed illuminance, temperature is in the light, thermal environment comfort range, the height position of the horizontal dynamic shading member is no longer adjusted, and the new height value l i+1 of the horizontal dynamic shading member at this time is taken as the horizontal dynamic shading member height value corresponding to the season period in the original schedule preset database, and is marked as verified. i

[0050] G02: If dx=0 and dy<1; or dy=0 and dx<1; or dx, dy are not equal to 0 and dx+dy≤2, the new indoor illuminance x i+1 , temperature y i+1 , and horizontal dynamic shading member height value l i+1 are taken as the indoor illuminance x i , temperature y i , and horizontal dynamic shading member height value l i , respectively, in the original schedule preset database, and the error is reduced by recalling the horizontal dynamic shading member twice, and repeating the calculation and comparison process of the horizontal dynamic shading member and the recorded data.

[0051] G03: If dx=0 and dy>1; or dy=0 and dx>1; or dx, dy are not equal to 0 and dx+dy>2, the previous group of data indoor illuminance x i , temperature y i , and horizontal dynamic shading member height value l i are retained; the error is reduced by recalling the horizontal dynamic shading member twice, and repeating the calculation and comparison process of the horizontal dynamic shading member and the recorded data.

[0052] G04: When a certain horizontal dynamic shading member height value l i has undergone three verifications, so that dx+dy=0, i.e. the changed indoor illuminance, temperature is in the light, thermal environment comfort range, it is considered that the height position of the horizontal dynamic shading member at this time is optimal, the cycle is terminated, and the value l i is taken as the horizontal dynamic shading member height value corresponding to the season period in the schedule preset database, and is marked as verified.

[0053] ​If the microclimate data Q measured by the indoor meteorological parameter sensor changes significantly Q' during the whole cycle of the step G, i.e. when the indoor temperature changes more than 1℃ or when the indoor illuminance changes from the current value to 1.5 times of the current value, then the next cycle of judgment is entered.

[0054] Each time the height position of the horizontal dynamic sunshade member is adjusted, it is kept unchanged for 5 minutes to ensure stable and accurate data measurement results.

[0055] The performance effect evaluation employs the annual effective natural lighting illuminance UDI 300-2000 and the annual air conditioning energy consumption E t Two indexes are used to test the actual operation effect of the horizontal dynamic sunshade member, and the calculation formula is as follows:

[0056]

[0057] E t = Q 制冷负荷 + Q 制热负荷 (7)

[0058] In the formula, UDI 300-2000 is the percentage of effective natural lighting illuminance when the illuminance is 300-2000 lux;

[0059] t eu is the time length of natural lighting illuminance of the test point in the range of 300-2000 lux, h;

[0060] T is the total time length of the whole year, 8760h;

[0061] E t is the annual air conditioning energy consumption, GJ, which consists of two parts of summer air conditioning refrigeration load and winter air conditioning heating load;

[0062] The actual operation of the horizontal dynamic sunshade member is tested in terms of indoor annual natural lighting illuminance and annual air conditioning energy consumption, and compared with the indoor annual simulated natural lighting illuminance and annual simulated air conditioning energy consumption of the horizontal fixed sunshade member at different heights, if:

[0063]

[0064] it is judged that the effective natural lighting level and the actual energy saving effect of the light-heat balance dynamic building sunshade system are better, and the result can test the effectiveness of the schedule preset database and further optimize the control process of the formal operation mode;

[0065] In the formula, UDI 300-2000 ' is the indoor annual effective natural lighting illuminance under the influence of the horizontal dynamic sunshade member;

[0066] In the formula, UDI 300-2000 ' is the indoor annual effective natural lighting illuminance under the influence of the horizontal dynamic sunshade member; The average value of the annual effective natural lighting illuminance under the influence of the horizontal fixed sunshade member with different heights from the ground under the simulated working condition;

[0067] E t The annual air conditioning energy consumption under the influence of the horizontal dynamic sunshade member;

[0068] The average value of the annual air conditioning energy consumption under the influence of the horizontal fixed sunshade member with different heights from the ground under the simulated working condition;

[0069] The simulated working condition is based on the annual hourly microclimate data recorded by the outdoor meteorological parameter sensor and the indoor meteorological parameter sensor, and the horizontal fixed sunshade member with different heights from the ground is simulated.

[0070] The advantages and beneficial effects of the present application are:

[0071] 1. Better overall optimal design of the building sunshade system, the present application considers the contradictory influence of natural lighting and solar radiation and the comfort, energy saving and other targets at the same time. Compared with the traditional special design with sunshade or lighting as a single target, the light-heat balanced dynamic building sunshade system and the control method can avoid ignoring the influence of one party because of overemphasizing the characteristics of a certain variable of light or heat, and can also avoid the problem of repeated or even conflicting design performance caused by independent design.

[0072] 2. More energy saving, which is embodied by dividing the sunshade member unit into vertical fixed sunshade partition and horizontal dynamic sunshade member, forming a certain space depth of the enclosure structure, which can realize integrated control of sunshade, heat insulation and lighting on the whole building level to provide indoor comfortable light and heat environment, thereby reducing equipment energy consumption and achieving energy saving effect.

[0073] 3. More efficient, which is embodied in the setting of the schedule preset database, which pre-sets the light-heat balanced height position of the horizontal dynamic sunshade member in different seasons and different periods of the year, and converts it into control information. Therefore, when the horizontal dynamic sunshade member operates, it is not necessary to repeat the building performance simulation calculation every time to realize the immediate response to weather changes, which can save calculation time and improve response speed.

[0074] 4. A more comprehensive quantitative assessment of light and thermal comfort is achieved by using indoor illuminance as a light environment evaluation index and PMV-PPD as a thermal environment evaluation index to evaluate the light and thermal performance of horizontally fixed shading components at different ground heights at a specific time i. This comprehensively considers indoor and outdoor environmental factors as well as human physiological factors, including illuminance, temperature, humidity, wind speed, radiation, clothing, and metabolic rate. The comprehensive light and thermal environment difference value k directly reflects the deviation between the height of the horizontally fixed shading component and the ideal indoor light and thermal comfort state at a specific time. This simplifies the evaluation process, quickly determines the optimal height value for the comprehensive light and thermal environment, and provides a reference for the optimization and control of the scheduled preset database.

[0075] 5. Enhanced intelligence is reflected in the instantaneous response and dynamic adjustment of the horizontal dynamic shading components. Through a pre-set database and intelligent control system, an automatic operation control process for the building's horizontal dynamic shading components is established. This process can adjust the height and position of the horizontal dynamic shading components in real time based on room usage, personnel changes, and real-time measured indoor and outdoor meteorological parameters, ensuring that the room is in a state of light and heat balance.

[0076] 6. The dynamic building shading control method for light and heat balance of this invention can adapt to local weather changes rather than simulated conditions. It has two modes: formal operation and optimization adjustment, and can continuously optimize the control process based on performance evaluation. When a room is not in use, the optimization adjustment mode can be activated to automatically correct the height value of the horizontal dynamic shading component in the schedule preset database based on the microclimate data measured in real time by indoor meteorological parameter sensors, in order to adapt to local weather changes rather than simulated conditions.

[0077] 7. This invention is applicable to public buildings that have certain requirements for room light and heat environment comfort and energy saving. It is also applicable to building spaces of different heights and scenarios. Different shapes and patterns can be customized according to needs, and it has the characteristics of unified form and beautiful shape. Attached Figure Description

[0078] Figure 1 This is a schematic diagram of the installation position of the present invention on the south facade of a building according to an embodiment of the invention;

[0079] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention;

[0080] Figure 3 yes Figure 2 Side view of the embodiment shown;

[0081] Figure 4 yes Figure 2 A front view of the embodiment shown;

[0082] Figure 5 yes Figure 2 A plan view of the embodiment shown;

[0083] Figure 6 This is a schematic diagram of the intelligent control principle of the dynamic building shading system for light and heat balance according to an embodiment of the present invention;

[0084] Figure 7 This is a flowchart illustrating the operational logic of the dynamic building shading control method for light and heat balance according to an embodiment of the present invention.

[0085] Figure 8 This embodiment of the invention takes a room with a ceiling height of 4m as an example, and uses the annual effective natural light intensity (UDI) as an example. 300-2000 The performance evaluation results of horizontal dynamic shading components are used as evaluation indicators.

[0086] Figure 9 This embodiment of the invention takes a room with a floor height of 4m as an example, and the annual air conditioning energy consumption E t The performance evaluation results of horizontal dynamic shading components are used as evaluation indicators.

[0087] Reference numerals: 1. Motor power cord; 2. Vertically fixed sunshade partition; 3. Reserved side groove; 4. Slide rail motor; 5. Track side pulley; 6. Motor push head; 7. Motor push head fixing bracket; 8. Horizontal dynamic sunshade component; 9. Indoor meteorological parameter sensor; 10. Outdoor meteorological parameter sensor; 11. Adjustment mechanism; 12. Storage module; 13. Operation adjustment module; 14. Monitoring computer; 15. Multifunctional group controller. Detailed Implementation

[0088] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0089] like Figure 1 As shown: The overall south facade of the building is 64.8m long and 14.5m high, with a corridor depth of 2.3m. The shading component unit is located at the semi-outdoor interface of the south facade and connects to the main building structure, forming a component unit that integrates shading, heat insulation, and regulation of indoor lighting. The shading component unit includes a vertically fixed shading partition 2 and a horizontal dynamic shading component 8, constituting a building envelope with a certain spatial depth.

[0090] like Figures 2-4 As shown: The vertically fixed sunshade partition 2 is installed between the structures of two adjacent floor slabs. It is 900mm wide and 200mm thick and is the main component for shielding excessive solar radiation. The horizontal dynamic sunshade component 8 is 900mm wide and 150mm thick. It is connected to the vertically fixed sunshade partition 2 through the pulleys 5 on both sides of the track and the motor push head fixing bracket 7. It can move up and down between adjacent vertically fixed sunshade partitions.

[0091] Among them, the pulley 5 is connected to the slide rail motor 4, and the motor push head 6 is controlled by the intelligent control system to move the pulley 5, thereby adjusting the height position of the horizontal dynamic sunshade component 8.

[0092] like Figure 5 As shown: The vertically fixed sunshade partition 2 is provided with a structural layer, an insulation layer, and a finishing layer from the inside out. In this embodiment, the insulation layer is filled with 50mm thick insulation cotton to enhance the heat insulation performance of the vertically fixed sunshade partition. Side grooves 3 are reserved on the panel body to accommodate the slide rail motor 4 and the track side pulleys 5, respectively.

[0093] The lower part of the slide rail motor slot is equipped with a motor pusher 6, which is connected to the horizontal dynamic sunshade component 8 through a fixed bracket 7; the upper part of the slide rail motor slot is connected to the motor power line 1, which connects the slide rail motor 4 to the multi-functional group controller 15 of each layer.

[0094] In this embodiment, the horizontal dynamic shading component 8 uses a galvanized steel pipe wrapped with a 3mm thick aluminum plate to reduce its weight. The smooth white aluminum surface serves as a reflective material, which is beneficial for regulating indoor lighting. The horizontal dynamic shading component 8 is adjusted according to the environmental microclimate data measured by the indoor meteorological parameter sensor 9 and the outdoor meteorological parameter sensor 10. It moves up and down in the vertical direction, which can control the depth of natural light entering the room, thereby improving the comfort of the indoor light and heat environment.

[0095] like Figure 6 As shown: The present invention provides a dynamic building shading system for achieving schedule preset and real-time response, which includes shading component units, schedule preset database and intelligent control system;

[0096] Among them, the wind, light and rain weather station is installed on the roof as an outdoor meteorological parameter sensor 10 to record hourly microclimate data throughout the year, including black bulb temperature, dry bulb temperature, wet bulb temperature, relative humidity, atmospheric pressure, solar radiation intensity, and air velocity data; indoor meteorological parameter sensors 9 are installed in rooms on each floor of the building that require light and heat regulation to collect indoor light intensity, black bulb temperature, dry bulb temperature, wet bulb temperature, relative humidity, and air velocity data.

[0097] The adjustment mechanism 11 includes a multi-functional group controller 15 and a slide rail motor 4. The monitoring computer 14 controls the multi-functional group controller 15 of each layer. The group controller is connected to the slide rail motor 4 of multiple horizontal dynamic sunshade components on each layer, driving the horizontal dynamic sunshade components to move vertically up and down.

[0098] The storage module 12 includes a memory, characterized in that it stores a schedule preset database. The schedule preset database is recorded in the monitoring computer 14 via the storage module. The monitoring computer is connected to an intelligent control system, which controls the height and position of the horizontal dynamic sunshade component via the operation adjustment module 13.

[0099] The operation adjustment module 13 comprises a memory and a processor, and the stored program code is suitable for being loaded and run by the processor to run the light-heat balance dynamic building sunshade regulation method and convert the height position of the horizontal dynamic sunshade member into control information.

[0100] In this embodiment, the establishment process of the schedule preset database is as follows:

[0101] S1, import the building physical model, and equivalent the moving track of the horizontal dynamic sunshade member in the vertical direction to the horizontal fixed sunshade member with different heights from the ground. According to the local meteorological parameters, the indoor illuminance and temperature under the influence of the horizontal fixed sunshade member with different heights from the ground are simulated and calculated year by year.

[0102] The simulation is performed by using Energyplus. The opening area and material are set according to the design. When calculating the illuminance, the indoor working surface elevation is set as a 300*300mm grid, and the room usage schedule is calculated according to the full time period. Taking a room with a floor height of 4m as an example, the horizontal fixed sunshade member height is set at an interval of 150mm, and the indoor annual hourly illuminance and temperature under the influence of the horizontal fixed sunshade member at different height positions are calculated.

[0103] S2, evaluate the light and heat environment performance of the horizontal fixed sunshade member with different heights from the ground at a specific time i, wherein the indoor illuminance is used as the evaluation index of the light environment; the thermal comfort predicted mean vote PMV and the predicted percentage of dissatisfaction PPD are used as the evaluation indexes of the thermal environment. The index calculation formula is as follows:

[0104]

[0105] PPD = 100-95exp[-(0.03353PMV 4 +0.2179PMV 2 )] (11)

[0106] In the formula, M is the energy metabolism rate of the human body, W / ㎡;

[0107] W is the mechanical work done by the human body, W / ㎡;

[0108] P a is the water vapor pressure of moist air, kPa;

[0109] t a is the dry bulb temperature of air, ℃;

[0110] f cl is the clothing area coefficient;

[0111] is the average temperature of the dressed human body surface, ℃;

[0112] The ambient mean radiant temperature is ℃;

[0113] h c The air convection heat transfer coefficient is expressed in W / (m²·K).

[0114] S3. Compare the dimensionless results of the light and heat environment evaluation results of horizontal fixed shading components at different ground heights with the comfort range. This result is represented by the comprehensive light and heat environment difference value k of the horizontal fixed shading component at time i. The illuminance range for comfortable light environment is 300 to 2000 lux, and the PMV-PPD range for comfortable heat environment is -0.5 to +0.5. When the comprehensive light and heat environment difference value k of the horizontal fixed shading component at time i is the smallest, the corresponding height value of the horizontal fixed shading component is the optimal height value for the comprehensive light and heat environment at a specific time i. At this time, the indoor environment is considered to be in a state of light and heat balance.

[0115] Table 1 shows the optimal height values ​​for the overall light and heat environment of horizontally fixed shading components at different ground heights at specific times, taking a room with a floor height of 4m as an example.

[0116]

[0117]

[0118] Taking a room with a floor height of 4m as an example, the optimal height of the horizontally fixed shading component for the overall light and heat environment was determined at 13:00 on July 22nd, the hottest day of the year. The evaluation indices for light and heat environment comfort were calculated based on local summer meteorological parameters and the clothing of indoor occupants. By comparing the dimensionless results of the light and heat environment evaluation results with the comfort range of horizontally fixed shading components at different ground heights, it can be determined that when the height of the horizontally fixed shading component is 1900mm, the overall light and heat environment difference value k is the smallest, indicating the optimal overall light and heat environment and a state of light and heat balance indoors.

[0119] S4. Summarize the optimal height values ​​of the light and heat environment of the horizontal fixed shading components at each time. The resulting set of height positions is the scheduled preset database of the horizontal dynamic shading components.

[0120] Table 2 is a database of preset schedules for horizontal dynamic shading components, taking a room with a floor height of 4m as an example, in an embodiment of the present invention.

[0121]

[0122] like Figure 7 As shown: A dynamic building shading control method for achieving scheduled presets and real-time response, including formal operation mode, optimization adjustment mode, and performance evaluation.

[0123] The actual operating mode of this embodiment is set as follows:

[0124] A, corresponding room indoor nobody uses or one hour without reservation use, do not open intelligent control system, horizontal dynamic sunshading member remains in place;

[0125] B, corresponding room indoor somebody uses or one hour will have somebody use, and room indoor illumination and temperature meet light, heat environment comfortable range without opening lamps and air conditioning, the light environment comfortable illumination range is 300-2000 lux, the heat environment comfortable temperature range is 18-22 DEG C, do not open intelligent control system, horizontal dynamic sunshading member remains in place;

[0126] C, corresponding room indoor somebody uses or one hour will have somebody use, and room indoor illumination and temperature do not meet light, heat environment comfortable range, open intelligent control system, adjust horizontal dynamic sunshading member to the height position corresponding to the season period in the schedule preset database pre-set.

[0127] The optimization adjustment mode of the embodiment is used to correct the height value of horizontal dynamic sunshading member pre-set in the schedule preset database, and includes the following steps:

[0128] D, when somebody uses, according to formal operation mode, that is, step A-C operation;

[0129] E, when nobody uses, if the optimization adjustment mode is enabled, then open intelligent control system, adjust horizontal dynamic sunshading member to the height position corresponding to the season period in the schedule preset database pre-set, the height value corresponding to the time i is recorded as l i , and record the microclimate data Q measured by indoor meteorological parameter sensor at this time, including indoor illumination x i And temperature y i ;

[0130] F, if indoor illumination x i And temperature y i Meet light, heat environment comfortable range, then do not adjust the height position of horizontal dynamic sunshading member, the data (Q→l i ) is marked as verification;

[0131] G, if indoor illumination x i And temperature y i Do not meet light, heat environment comfortable range, then adjust the height value of horizontal dynamic sunshading member to l i+1 , simultaneously record indoor illumination x i+1 And temperature y i+1 Measured by indoor meteorological parameter sensor at this time, and compare and calculate with the previous group of data, the calculation formula is as follows:

[0132]

[0133] Wherein, 300 lux, 2000 lux are the lower limit and upper limit of the indoor light environment comfort range; 18℃, 22℃ are the lower limit and upper limit of the indoor thermal environment comfort range.

[0134] G01: If dx+dy=0, i.e. the changed illuminance, temperature is in the light, thermal environment comfort range, the height position of the horizontal dynamic shading member is no longer adjusted, and the new height value l i+1 of the horizontal dynamic shading member is recorded as the corresponding value in the original schedule preset database of the season period, and marked as verified. i

[0135] G02: If dx=0 and dy<1; or dy=0 and dx<1; or dx, dy are not equal to 0 and dx+dy≤2, the new indoor illuminance x i+1 , temperature y i+1 , and the height value l i+1 of the horizontal dynamic shading member are recorded as the corresponding value in the original schedule preset database of the season period, and marked as verified. i i i To reduce the error, the horizontal dynamic shading member is called back twice, and the calculation and comparison process of the horizontal dynamic shading member and the recorded data is repeated.

[0136] G03: If dx=0 and dy>1; or dy=0 and dx>1; or dx, dy are not equal to 0 and dx+dy>2, the previous group of data indoor illuminance x i , temperature y i , and the height value l i of the horizontal dynamic shading member are kept.To reduce the error, the horizontal dynamic shading member is called back twice, and the calculation and comparison process of the horizontal dynamic shading member and the recorded data is repeated.

[0137] G04: When a certain height value l i of the horizontal dynamic shading member has experienced three confirmations, so that dx+dy=0, i.e. the changed indoor illuminance, temperature is in the light, thermal environment comfort range, it is considered that the height position of the horizontal dynamic shading member is optimal, the cycle is terminated, and the value l i is taken as the corresponding value of the horizontal dynamic shading member in the original schedule preset database of the season period, and marked as verified.

[0138] In step G, if the microclimate data Q measured by the indoor meteorological parameter sensor changes significantly Q', i.e. when the indoor temperature changes by more than 1℃ or when the indoor illuminance changes from the current value to 1.5 times the current value, the next cycle is entered for judgment. ​​

[0139] The height position of the horizontal dynamic shading member was kept unchanged for 5 minutes after each adjustment to ensure stable and accurate data measurement results.

[0140] In this embodiment, the performance effect evaluation was based on the annual effective natural lighting illuminance UDI 300-2000 and the annual air conditioning energy consumption E t The two indexes were used to test the actual operation effect of the horizontal dynamic shading member and compared with the indoor annual simulated natural lighting illuminance and the annual simulated air conditioning energy consumption of the horizontal fixed shading members at different floor heights. The results showed that, compared with the horizontal fixed shading members at different floor heights, the light-heat balanced dynamic building shading system could bring better lighting effect to the indoor while ensuring overall energy saving.

[0141] As shown in Figures 8-9 : Taking the room with a building floor height of 4 m as an example, the indoor annual effective natural lighting illuminance UDI 300-2000 under the influence of the horizontal dynamic shading member was higher than the average value of the indoor annual effective natural lighting illuminance under the influence of the horizontal fixed shading members at different floor heights in the simulated working conditions The annual air conditioning energy consumption E t under the influence of the horizontal dynamic shading member was lower than the average value of the annual air conditioning energy consumption under the influence of the horizontal fixed shading members at different floor heights in the simulated working conditions It can be judged that the effective natural lighting level and the actual energy saving effect of the light-heat balanced dynamic building shading system are more optimal.

Claims

1. A dynamic building shading system that can achieve both schedule preset and instant response, characterized in that, The application relates to a sun-shading component unit, a schedule preset database and an intelligent control system. The sun-shading component unit is arranged at a semi-outdoor interface and connected with a building main structure to form a component unit integrating building sun-shading, heat insulation and indoor light adjustment; the sun-shading component unit comprises vertical fixed sun-shading partitions and horizontal dynamic sun-shading components; the vertical fixed sun-shading partitions are installed between structures of adjacent two floors; the horizontal dynamic sun-shading components are connected with the vertical fixed sun-shading partitions through pulleys and fixed supports and can move up and down between the adjacent vertical fixed sun-shading partitions. The schedule preset database comprises a set of height position collections of the horizontal dynamic sun-shading components in different time periods in different seasons in a year under local meteorological parameters; the height position collections are obtained through the following steps: S1, a building physical model is introduced, the moving track of the horizontal dynamic sun-shading component in the vertical direction is equivalent to horizontal fixed sun-shading components with different heights from the ground, and indoor illuminance and temperature under the horizontal fixed sun-shading components with different heights from the ground are simulated and calculated hour by hour in a year according to local meteorological parameters; S2, light and heat environment performances of the horizontal fixed sun-shading components with different heights from the ground at a specific moment i are evaluated, wherein indoor illuminance is used as an evaluation index of the light environment; PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) are used as evaluation indexes of the heat environment; S3, the de-dimensioned results of the light and heat environment evaluation results of the horizontal fixed sun-shading components with different heights from the ground and the comfortable range are compared, and the results are represented by a light and heat environment comprehensive gap value k of the horizontal fixed sun-shading component at the moment i; the comfortable illuminance range of the light environment is 300-2000 lux, and the comfortable PMV-PPD range of the heat environment is-0.5-+0.5; when the light and heat environment comprehensive gap value k of the horizontal fixed sun-shading component at the moment i is the minimum, the corresponding height value of the horizontal fixed sun-shading component is the height value of the light and heat environment comprehensive optimization at the specific moment i, and at this time, it is considered that the indoor environment is in a light and heat balance state; S4, the height values of the light and heat environment comprehensive optimization of the horizontal fixed sun-shading component at different moments are summarized, and the formed height position collection is the schedule preset database of the horizontal dynamic sun-shading component; The intelligent control system returns the detection information of the building outdoor meteorological parameter sensor and the indoor meteorological parameter sensor to the schedule preset database for identification and comparison, and controls the horizontal dynamic sun-shading component to move to the optimal position of the indoor light and heat balance; The calculation formula of the light and heat environment comprehensive gap value k of the horizontal fixed sun-shading component at the moment i is as follows: ； ； ； In the formula, z i , p i is the calculated value of indoor light and thermal environment index under the influence of horizontal fixed sunshade member at time i. dz, dp is the gap value of the evaluation results of the indoor light and heat environment indexes and the comfortable range under the influence of the horizontal fixed sun-shading component at the moment i; Dz, Dp is the de-dimensioned result of the gap of the evaluation results of the indoor light and heat environment and the comfortable range under the influence of the horizontal fixed sun-shading component at the moment i.

2. The photo-thermal balanced dynamic building shading system with schedule preset and instant response capability of claim 1, wherein, The vertical fixed sun-shading partition is sequentially provided with a structural layer, a thermal insulation layer and a veneer from inside to outside, the thermal insulation layer is used to enhance the heat insulation performance of the vertical fixed sun-shading partition; a side groove of the vertical fixed sun-shading partition is reserved for placing a track side pulley and a slide rail motor, wherein a motor push head is installed at the lower part of the side groove for placing the slide rail motor, the motor push head is connected with a horizontal dynamic sun-shading component through a fixed support; the upper part of the slide rail motor groove is connected with a motor power line, and the motor power line is used to connect the motor with each layer of multifunctional group controller.

3. The photo-thermal balanced dynamic building shading system with schedule preset and instant response capability of claim 1, wherein, The upper part of the structural layer of the horizontal dynamic sun-shading component is provided with a light-reflecting plate or is wrapped with a light-reflecting material.

4. The photo-thermal balanced dynamic building shading system with schedule preset and instant response capability of claim 1, wherein, The intelligent control system comprises an outdoor meteorological parameter sensor, an indoor meteorological parameter sensor, a storage module, a running adjustment module and an adjustment mechanism, wherein The outdoor meteorological parameter sensor is used to record annual hourly microclimate data, including black ball temperature, dry ball temperature, wet ball temperature, relative humidity, atmospheric pressure, solar radiation intensity and air flow rate data; The indoor meteorological parameter sensor is used to collect indoor light intensity, black ball temperature, dry ball temperature, wet ball temperature, relative humidity and air flow rate data; The storage module comprises a first memory, the first memory stores a plurality of first program codes, and a schedule preset database is stored; The running adjustment module comprises a second memory and a processor, the second memory stores a plurality of second program codes, the second program codes are loaded and run by the processor, and the height position of the horizontal dynamic sun-shading component is converted into control information; The adjustment mechanism comprises a multifunctional group controller and a motor, the monitoring computer controls each layer of multifunctional group controller, the multifunctional group controller is connected with the motor of each layer of horizontal dynamic sun-shading component, and drives the horizontal dynamic sun-shading component to move up and down in the vertical direction.

5. A method for regulating the dynamic building shading system based on the photothermal balance according to any one of claims 1-4, characterized in that, The following formal operation steps are included: A. When there is no one in the corresponding room or there is no reservation for use within one hour, the intelligent control system is not started, and the horizontal dynamic sun-shading component remains in place; B. When there is someone in the corresponding room or someone will use the room within one hour, and the room indoor illuminance and temperature meet the light and heat environment comfort range without starting the lamps and air conditioners, the light environment comfort illuminance range is 300-2000 lux, and the heat environment comfort temperature range is 18-22℃, the intelligent control system is not started, and the horizontal dynamic sun-shading component remains in place; C. When there is someone in the corresponding room or someone will use the room within one hour, and the room indoor illuminance and temperature do not meet the light and heat environment comfort range, the intelligent control system is started, and the horizontal dynamic sun-shading component is adjusted to the height position corresponding to the season period in the schedule preset database.

6. The method of claim 5, wherein the method further comprises: The optimization adjustment mode is also included for correcting the height value of the horizontal dynamic sun-shading component preset in the schedule preset database, and the following steps are included: D. When someone uses, the formal operation mode, i.e. steps A-C, is run; E. If the optimization adjustment mode is enabled when there is no one, the intelligent control system is started, the horizontal dynamic sun-shading component is adjusted to the height position corresponding to the preset time period of the season in the schedule preset database, and the height value corresponding to the time i is recorded as l i , and the microclimate data Q measured by the indoor meteorological parameter sensor at this time is recorded, including indoor illuminance x i and temperature y i ; F. If the indoor illuminance x i and the temperature y i satisfy the light and thermal environmental comfort range, the height position of the horizontal dynamic shading member is no longer adjusted, and the set of data (Q→l i ) is marked as verified. G. If indoor illuminance x i With temperature y i If the light and heat environment comfort range is not met, adjust the horizontal dynamic shading member height value to l i+1 At the same time, record the indoor illuminance x measured by the indoor meteorological parameter sensor at this time i+1 With temperature y i+1 And compare and calculate with the previous group of data, the calculation formula is as follows: ； ； a0 and a1 are the lower limit and upper limit of the indoor light environment comfort range; b0 and b1 are the lower limit and upper limit of the indoor heat environment comfort range; G01: If dx+dy=0, i.e. the changed illuminance, temperature is in the light, heat environment comfort range, the height position of the horizontal dynamic sun-shading member is no longer adjusted, and the new height value l of the horizontal dynamic sun-shading member at this time is taken as the new preset value of the horizontal dynamic sun-shading member height value l in the original schedule preset database i+1 The horizontal dynamic sun-shading member height value l corresponding to the season period in the original schedule preset database is replaced i , and marked as verified; G02: If dx = 0 and dy < 1; or dy = 0 and dx < 1; or dx, dy are not equal to 0 and dx + dy ≤ 2, then replace the original indoor illuminance x i+1 , temperature y i+1 , horizontal dynamic shading member height value l i+1 with the new indoor illuminance x i , temperature y i , horizontal dynamic shading member height value l i ; to reduce the error, call back the horizontal dynamic shading member twice, repeat the calculation, comparison process of horizontal dynamic shading member and recorded data; G03: If dx = 0 and dy > 1; or dy = 0 and dx > 1; or dx, dy are not equal to 0 and dx + dy > 2, then keep the previous indoor illuminance x i Temperature y i And horizontal dynamic sunshade member height value l i ; To reduce the error, call back twice the horizontal dynamic sunshade member, repeat the loop step G horizontal dynamic sunshade member and record data calculation, comparison process; G04: When a certain horizontal dynamic shading member height value l i After three confirmations, so that dx+dy=0, that is, the changed indoor illuminance, temperature is in the light, heat environment comfort range, it is considered that the height position of the horizontal dynamic shading member at this time is optimal, the cycle is stopped, and the value l i As the horizontal dynamic shading member height value corresponding to the seasonal period in the schedule preset database, and marked as verification.

7. The method of claim 6, wherein, If the indoor microclimate data Q measured by the indoor microclimate parameter sensor changes significantly Q' during the whole cycle of the judgment time, i.e. when the indoor temperature changes more than 1℃ or when the indoor illuminance changes from the current value to 1.5 times of the current value, then the next cycle of judgment is entered. After adjusting the height of the horizontal dynamic shading member each time, the height is kept unchanged for 5 minutes to ensure stable and accurate data measurement results.

8. The method for regulating the light-thermal balanced dynamic building shading system with schedule preset and instant response according to claim 5, characterized in that, Also included is a performance effect evaluation that employs annual effective natural lighting illuminance UDI 300-2000 and annual air conditioning energy consumption E t Two index test levels dynamically test the actual operation effect of the sunshade member, and the calculation formula is as follows: ； ； UDI = UDI (0) + UDI (1) * (1 - e 300-2000 % of effective natural daylight luminance for illuminance between 300 and 2000 lux; t eu To test the point natural lighting illumination in 300-2000lux length of time, h; T is the total length of the year, 8760h; E t For the annual air conditioning energy consumption, GJ, both the summer air conditioning cooling load and the winter air conditioning heating load are included. The actual operation of the horizontal dynamic shading member is measured by measuring the indoor annual natural lighting illuminance and calculating the annual air conditioning energy consumption, and compared with the indoor annual simulated natural lighting illuminance and annual simulated air conditioning energy consumption of the horizontal fixed shading member at different heights, if: ； ； If the effective natural lighting level and the actual energy saving effect of the light and heat balanced dynamic building shading system are better, the result can test the effectiveness of the schedule preset database and further optimize the control process of the formal operation mode; wherein Eeff is the annual effective natural daylight illuminance in the room under the influence of the horizontal dynamic shading element; To simulate the annual average effective natural illumination in the room under the influence of horizontal fixed shading components with different heights from the ground. for the annual air conditioning energy consumption under the influence of the horizontal dynamic shading element; To simulate the average annual air conditioning energy consumption under the influence of horizontal fixed shading elements with different heights from the ground. The simulation working condition is based on the annual hourly microclimate data recorded by the outdoor microclimate parameter sensor and the indoor microclimate parameter sensor, and the horizontal fixed shading member at different heights is simulated.

Images