A multi-region differentiated demand-oriented non-uniform thermal environment evaluation method

Abstract

The application discloses a kind of non-uniform thermal environment evaluation methods for multi-zone differentiation needs, and the application relates to the field of heating, ventilation and air conditioning, wherein including: obtaining the temperature distribution of indoor current time;According to the temperature distribution, the influence degree of non-uniform thermal environment influence factor to the thermal environment parameter at any position in the room is determined;According to the influence degree of non-uniform thermal environment influence factor to the thermal environment parameter at any position in the room, the thermal environment difference degree between each area in the room is evaluated;According to the temperature distribution, the thermal environment uniformity in each area is evaluated respectively;According to the thermal environment difference degree between each area and the thermal environment uniformity in each area, the non-uniform thermal environment evaluation result of the room is determined.The application can evaluate non-uniform thermal environment.

Description

Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning, and more specifically, to a method for evaluating non-uniform thermal environments that cater to the differentiated needs of multiple regions. Background Technology

[0002] The existing indoor thermal environment design aims to ensure uniform thermal environment parameters for the entire indoor space or the entire work area. However, in reality, due to factors such as age, gender, and activity level, different people have different thermal preferences. It is necessary to create non-uniform thermal environments that differ between multiple areas based on the different thermal preferences of people in different areas.

[0003] Currently, indoor thermal environment assessments typically evaluate the overall spatial thermal environment. However, when the goal is to better meet the differentiated thermal needs of people in different areas, it is necessary to evaluate the thermal environment performance of each zone, as well as the potential for differentiation between zones. Traditional evaluation methods cannot systematically assess the effectiveness of meeting such higher demands. New evaluation methods are needed, which are of great significance for creating non-uniform thermal environments that cater to differentiated needs. Summary of the Invention

[0004] This invention provides a method for evaluating non-uniform thermal environments that addresses the differentiated needs of multiple regions, primarily by its ability to evaluate non-uniform thermal environments.

[0005] According to a first aspect of the present invention, a method for evaluating a non-uniform thermal environment oriented towards the differentiated needs of multiple regions is provided, comprising:

[0006] Obtain the current indoor temperature distribution;

[0007] Based on the temperature distribution, determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors;

[0008] Based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room, evaluate the degree of thermal environment difference between different areas in the room.

[0009] The uniformity of the thermal environment in each region is evaluated based on the temperature distribution.

[0010] The evaluation result of the non-uniform thermal environment in the room is determined based on the thermal environment differences between the regions and the thermal environment uniformity within the regions.

[0011] According to a second aspect of the present invention, a non-uniform thermal environment assessment device for multi-regional differentiated needs is provided, comprising:

[0012] The acquisition unit is used to acquire the current temperature distribution indoors.

[0013] The first determining unit is used to determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors, based on the temperature distribution.

[0014] The first evaluation unit is used to evaluate the degree of thermal environment difference between different areas of the room based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room.

[0015] The second evaluation unit is used to evaluate the uniformity of the thermal environment in each region based on the temperature distribution.

[0016] The second determining unit is used to determine the evaluation result of the non-uniform thermal environment in the room based on the thermal environment difference between the regions and the thermal environment uniformity within the regions.

[0017] According to a third aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, performs the following steps:

[0018] Obtain the current indoor temperature distribution;

[0019] Based on the temperature distribution, determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors;

[0020] Based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room, evaluate the degree of thermal environment difference between different areas in the room.

[0021] The uniformity of the thermal environment in each region is evaluated based on the temperature distribution.

[0022] The evaluation result of the non-uniform thermal environment in the room is determined based on the thermal environment differences between the regions and the thermal environment uniformity within the regions.

[0023] According to a fourth aspect of the present invention, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to perform the following steps:

[0024] Obtain the current indoor temperature distribution;

[0025] Based on the temperature distribution, determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors;

[0026] Based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room, evaluate the degree of thermal environment difference between different areas in the room.

[0027] The uniformity of the thermal environment in each region is evaluated based on the temperature distribution.

[0028] The evaluation result of the non-uniform thermal environment in the room is determined based on the thermal environment differences between the regions and the thermal environment uniformity within the regions.

[0029] This invention provides a method for evaluating non-uniform thermal environments to meet the differentiated needs of multiple regions. Compared with existing technologies, it can acquire the current temperature distribution indoors and, based on the temperature distribution, determine the degree of influence of non-uniform thermal environment influencing factors on thermal environment parameters at any location indoors. Then, based on the degree of influence of these factors, it evaluates the thermal environment differences between different regions within the room. Simultaneously, based on the temperature distribution, it evaluates the thermal environment uniformity within each region. Finally, based on the thermal environment differences and uniformity within each region, it determines the evaluation result of the non-uniform thermal environment. Therefore, this invention, by analyzing the degree of influence of non-uniform thermal environment influencing factors on thermal environment parameters at any location indoors, and based on this degree of influence, evaluates the thermal environment differences between different regions and the thermal environment uniformity within each region, thus enabling the evaluation of non-uniform thermal environments to meet the differentiated needs of multiple regions.

[0030] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This diagram illustrates a flowchart of a non-uniform thermal environment evaluation method for multi-regional differentiated needs, provided by an embodiment of the present invention.

[0033] Figure 2 This invention illustrates a non-uniform thermal environment evaluation device for multi-regional differentiated needs, provided by an embodiment of the present invention.

[0034] Figure 3 This invention illustrates another non-uniform thermal environment evaluation device for multi-regional differentiated needs, provided by an embodiment of the present invention.

[0035] Figure 4 A schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention is shown. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0038] For differentiated multi-person zoned thermal environments, it is necessary to evaluate the performance of each zone's thermal environment and the level of differentiation that can be created between zones. Traditional evaluation methods will be difficult to apply, and new evaluation methods need to be established.

[0039] To address the aforementioned problems, embodiments of the present invention provide a method for evaluating non-uniform thermal environments that caters to diverse needs across multiple regions, such as... Figure 1 As shown, the method includes:

[0040] Step 101: Obtain the current temperature distribution in the room.

[0041] Among them, the temperature at any location in the room at the current moment can be determined based on the temperature distribution, and the temperature at any location in the room can change over time.

[0042] The embodiments of this invention are primarily applicable to scenarios involving the evaluation of non-uniform indoor thermal environments. The executing entity of these embodiments is a device or equipment capable of evaluating non-uniform indoor thermal environments.

[0043] In this embodiment of the invention, to obtain the indoor temperature distribution, temperature sensors can be pre-positioned at different locations within the room. By collecting temperature sensor data, the temperature at each location, i.e., the temperature distribution, can be determined. Alternatively, a CFD model of the room can be performed, and then the indoor temperature distribution can be simulated based on the CFD model.

[0044] Step 102: Based on the temperature distribution, determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors.

[0045] The non-uniform thermal environment influencing factors include the air vents, heat sources, and initial temperature conditions of the indoor room. Thermal environment parameters can include temperature parameters, humidity parameters, etc.

[0046] In this embodiment of the invention, after determining the temperature distribution in the room at the current moment, the influence of each air outlet, each heat source, and the initial temperature conditions on the thermal environment parameters at any location in the room can be evaluated based on the temperature distribution. For this process, step 102 specifically includes: calculating the excess temperature at any location in the room at the current moment based on the temperature distribution and reference temperature, wherein the excess temperature includes excess temperature caused only by each air outlet, excess temperature caused only by each heat source, and excess temperature caused only by the initial temperature conditions; determining the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room based on the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room, and determining the degree of influence of each air outlet, each heat source, and the initial temperature conditions on the thermal environment parameters at any location in the room.

[0047] The influence of each air outlet on the thermal environment parameters at any location within the room can be represented by air supply accessibility; the greater the air supply accessibility, the greater the influence of the air outlet on the thermal environment parameters at any location within the room. Similarly, the influence of each heat source on the thermal environment parameters at any location within the room can be represented by heat source accessibility; the greater the heat source accessibility, the greater the influence of the heat source on the thermal environment parameters at any location within the room. Furthermore, the influence of initial temperature conditions on the thermal environment parameters at any location within the room can be represented by initial condition accessibility; the greater the initial condition accessibility, the greater the influence of the initial temperature conditions on the thermal environment parameters at any location within the room.

[0048] The method for calculating air supply accessibility includes: calculating the excess air supply temperature of each air supply outlet based on the air supply temperature of each air supply outlet and the reference temperature; and calculating the air supply accessibility of each air supply outlet to thermal environment parameters at any location in the room based on the excess temperature and the excess air supply temperature.

[0049] Specifically, under a fixed flow field, assuming there is no heat source indoors, the walls are insulated, and the supply air temperature and the initial room temperature are both reference temperature T. O When the nth s Each air outlet starts at the air supply temperature from time 0. When air is continuously supplied, the temperature at any location P in the room at time τ can be determined based on the temperature distribution. Then, based on the reference temperature T O The temperature at any location P in the room at time τ It can be calculated that at any location indoors, only the nth... s Excess temperature caused by an air vent nth s The expression for the air supply accessibility of an air outlet to any indoor location P at time τ is as follows:

[0050]

[0051]

[0052]

[0053] in, For only by the nth s Excess temperature caused by an air vent For the nth s The air supply accessibility of each air outlet to any location P in the room at time τ is a dimensionless parameter that quantifies the degree of influence of each air outlet on the thermal environment parameters at any location. The greater the air supply accessibility, the stronger the control capability of the air outlet to the corresponding location. The value of air supply accessibility is between 0 and 1. In steady state, the sum of the air supply accessibility of each air outlet to the same location is equal to 1. For the nth s Excess air temperature at each air outlet.

[0054] Furthermore, regarding the calculation process of heat source accessibility, the method includes: calculating the average excess temperature of the exhaust vent in steady state based on the intensity of each heat source, air density, air specific heat capacity, and indoor ventilation volume; and calculating the heat source accessibility of each heat source to thermal environment parameters at any location in the room based on the excess temperature and the average excess temperature of the exhaust vent in steady state.

[0055] Specifically, under a fixed flow field, it is assumed that both the supply air temperature and the initial room temperature are reference temperatures T. O When the nth H A heat source starts at a constant intensity from time 0. When heat is released (with the intensity of other heat sources being zero), the temperature at any location P in the room at time τ can be determined based on the temperature distribution. Then, based on the reference temperature T O The temperature at any location P in the room at time τ It can be calculated that at any location indoors, only the nth... H Excess temperature caused by a heat source nth H The expression for the heat source accessibility of a heat source to any location P indoors at time τ is as follows:

[0056]

[0057]

[0058]

[0059] in, For only by the nth H Excess temperature caused by a heat source For the nth H The amount of heat generated by a heat source, i.e., the intensity of the heat source. The mean excess temperature at the exhaust vent in steady state is given by ρ, where ρ is the air density and C is the temperature at the vent. p Where is the specific heat capacity of air, and Q is the indoor ventilation volume. For the nth H The heat source accessibility of a heat source to any location P in the room at time τ is a dimensionless parameter that quantifies the degree of influence of each heat source on the thermal environment parameters at any location. The greater the heat source accessibility, the greater the influence of the heat source on the thermal environment parameters at the corresponding location, and the more the location tends to be in a warmer state.

[0060] Furthermore, regarding the calculation process of initial condition accessibility, the method includes: calculating an average temperature value based on the initial temperature distribution and room volume in the room; calculating an initial average excess temperature in the room based on the average temperature value and the reference temperature; and calculating the initial condition accessibility of the initial temperature conditions for thermal environment parameters at any location in the room based on the excess temperature and the initial average excess temperature in the room.

[0061] Specifically, under a fixed flow field, assuming there is no heat source indoors, the walls are insulated, and the supply air temperature and the initial room temperature are both reference temperature T. O When there is an initial temperature distribution in the room at the initial moment, the temperature at any location P in the room at time τ can be determined based on the temperature distribution. Then, based on the reference temperature T O The temperature at any location P in the room at time τ It can calculate the excess temperature at any location indoors caused solely by the initial temperature conditions. The initial temperature distribution accessibility expression for any indoor location P at time τ is as follows:

[0062]

[0063]

[0064]

[0065]

[0066] in, T is the excess temperature caused solely by the initial temperature conditions. p (0) represents the temperature at any point P inside the room at the initial moment, V represents the volume of the room, and θ represents the temperature at any point P inside the room. I The initial indoor average excess temperature. This represents the average temperature value. Let τ be the initial condition accessibility of the initial temperature condition at any location P in the room at time τ. The initial condition accessibility is a dimensionless parameter that quantifies the degree of influence of the initial temperature condition on the thermal environment parameters at any location. The greater the initial condition accessibility, the greater the influence of the initial condition on the thermal environment parameters at the corresponding location.

[0067] Therefore, according to the above formula, the air supply accessibility, heat source accessibility, and initial condition accessibility of each air outlet, heat source, and initial temperature condition on the thermal environment parameters at any location in the room can be calculated, thereby determining the degree of influence of each air outlet, heat source, and initial temperature condition on the thermal environment parameters at any location in the room.

[0068] Step 103: Evaluate the degree of thermal environment difference between different areas of the room based on the influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room.

[0069] The difference in thermal environment between different areas of the room can be caused by a single influencing factor or by two or more influencing factors.

[0070] In this embodiment of the invention, regarding the thermal environment difference caused by a single influencing factor, when the thermal environment difference between the regions is caused by each air outlet, the thermal environment difference between the regions is evaluated based on the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room; when the thermal environment difference between the regions is caused by each heat source, the thermal environment difference between the regions is evaluated based on the heat source accessibility of each heat source to the thermal environment parameters at any location in the room; when the thermal environment difference between the regions is caused by the initial temperature conditions, the thermal environment difference between the regions is evaluated based on the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room.

[0071] Furthermore, based on the air supply accessibility of each air outlet to any location within the room for thermal environment parameters, the degree of thermal environment difference between different areas of the room is evaluated, including: calculating the air supply accessibility of each air outlet to each area of ​​the room based on the air supply accessibility of each air outlet to any location within the room for thermal environment parameters; calculating the air supply accessibility difference between each air outlet to any two areas based on the air supply accessibility of each air outlet to each area of ​​the room; dividing the air supply accessibility difference into two categories according to the positive or negative sign of the air supply accessibility difference, and adding the air supply accessibility differences belonging to the same category to obtain the sum of the air supply accessibility differences of each air outlet to any two areas in two directions; and evaluating the degree of thermal environment difference between different areas of the room based on the sum of the air supply accessibility differences of each air outlet to any two areas in two directions.

[0072] Specifically, for any given area within the room, multiple location points can be selected. The average airflow accessibility of each air outlet to these locations is then calculated, and this average accessibility is determined as the airflow accessibility of each air outlet to that area. This allows us to determine the airflow accessibility of each air outlet to each area. Further, based on the airflow accessibility of each air outlet to each area, the airflow accessibility difference between any two areas is calculated. Then, based on the sign of the airflow accessibility difference, the differences are categorized and summed to obtain the sum of the airflow accessibility differences of all air outlets to any two areas in both directions. This is the airflow difference degree, which represents the maximum potential parameter difference that can be created when the relative magnitude and direction of the influence of all air outlets in a room on any two areas tend to be consistent. The specific calculation formula is as follows:

[0073]

[0074] in, Indicates the nth s The air supply outlets have poor air supply accessibility to areas p1 and p2. This represents the sum of negative air supply accessibility differences for all air supply outlets to areas p1 and p2. This represents the sum of the air supply accessibility differences between all air supply outlets and regions p1 and p2, where the difference is positive.

[0075] Furthermore, based on the heat source accessibility of each heat source to the thermal environment parameters at any location within the room, the thermal environment difference between different areas within the room is evaluated, including: calculating the heat source accessibility of each heat source to each area within the room based on the heat source accessibility of each heat source to the thermal environment parameters at any location within the room; calculating the heat source accessibility difference between each heat source and any two areas based on the heat source accessibility of each heat source to each area within the room; dividing the heat source accessibility difference into two categories according to the positive or negative sign of the heat source accessibility difference, and adding the heat source accessibility differences belonging to the same category to obtain the sum of the heat source accessibility differences between each heat source and any two areas in two directions; and evaluating the thermal environment difference between different areas within the room based on the sum of the heat source accessibility differences between each heat source and any two areas in two directions.

[0076] Specifically, for any given area within a room, multiple location points can be selected. The average heat source accessibility of each heat source to these location points is then calculated, and this average accessibility is determined as the heat source accessibility of each heat source to that area. This allows us to determine the heat source accessibility of each heat source to each area. Further, based on the heat source accessibility of each heat source to each area, the heat source accessibility difference between any two areas is calculated. Then, based on the sign of the heat source accessibility difference, the differences are categorized and summed to obtain the sum of the heat source accessibility differences of all heat sources to any two areas in both directions. This is the heat source difference degree, which characterizes the maximum potential parameter difference that can be created when the relative magnitude and direction of the influence of all heat sources in a room on any two areas tend to be consistent. The specific calculation formula is as follows:

[0077]

[0078] in, Indicates the nth H The heat source has poor accessibility to heat sources in regions p1 and p2. This represents the sum of the heat source accessibility differences for all heat sources in regions p1 and p2 that are negative. This represents the sum of the heat source accessibility differences for all heat sources in regions p1 and p2 that are positive.

[0079] Furthermore, based on the initial condition accessibility of the initial temperature conditions to thermal environment parameters at any location within the room, the thermal environment difference between different areas within the room is evaluated, including: calculating the initial condition accessibility of the initial temperature conditions to each area within the room based on the initial condition accessibility of the initial temperature conditions to thermal environment parameters at any location within the room; calculating the initial condition accessibility difference of the initial temperature conditions to any two areas based on the initial condition accessibility of the initial temperature conditions to each area within the room; and evaluating the thermal environment difference between different areas within the room based on the initial condition accessibility difference of the initial temperature conditions to any two areas.

[0080] Specifically, for any given area indoors, multiple location points can be selected. The average initial condition accessibility of the initial temperature conditions at these locations is then calculated, and this average is defined as the initial condition accessibility of the initial temperature conditions for that area. This allows us to determine the initial condition accessibility of the initial temperature conditions for each area. Further, based on the initial condition accessibility of the initial temperature conditions for each area, the difference in initial condition accessibility between any two areas is calculated, i.e., the initial condition difference. This index characterizes the maximum potential parameter difference that the initial temperature conditions may create between any two areas. The specific calculation formula is as follows:

[0081] DP IC (τ)=Δa I,p1,p2

[0082] Where, Δa I,p1,p2 This represents the difference in the accessibility of the initial temperature conditions to the initial conditions of regions p1 and p2.

[0083] It should be noted that the differences in air supply, heat source, and initial conditions are all dimensionless parameters, which can be used to evaluate both transient and steady-state parameter differences. When used for steady-state parameter difference evaluation, the difference in initial conditions is 0. Furthermore, the differences in air supply, heat source, and initial conditions are applicable not only to non-uniform environmental assessments that ensure temperature differences between different areas of an indoor space, but also to assessments that ensure differences in pollutant concentration and humidity between different areas of an indoor space. When evaluating pollutant concentration or humidity differences, simply replace the aforementioned accessibility with the corresponding accessibility.

[0084] Furthermore, regarding the thermal environment difference caused by at least two influencing factors, the method includes: calculating the temperature difference and / or thermal sensation difference between any two areas, and evaluating the thermal environment difference between indoor areas based on the temperature difference and / or the thermal sensation difference.

[0085] Specifically, for each area indoors, multiple location points are selected. Based on the current temperature distribution, the temperature values ​​at these locations can be determined. Then, the average temperature of each area is calculated. Next, based on the average temperature of each area, the predicted mean vote (PMV) for each area can be calculated. Finally, based on the average temperature and / or the predicted mean vote for each area, the temperature difference and / or the difference in thermal perception between any two areas can be calculated. The specific formula is as follows:

[0086]

[0087]

[0088] Where, ΔT i,j This represents the degree of temperature difference between region i and region j. and Let ΔPMV represent the average temperature of region i and region j, respectively. i,j This represents the difference in thermal sensation between region i and region j. and Let PMV represent the overall thermal sensation in regions i and j, respectively.

[0089] It should be noted that when the difference in thermal environment is caused by two or more influencing factors, it can be evaluated not only by temperature difference and / or thermal sensation difference, but also by other indicators.

[0090] In specific application scenarios, indoor rooms are usually divided into multiple zones. The differences in air supply, heat source, initial conditions, temperature, and / or thermal sensation between any two zones are calculated to evaluate the differences between all zones.

[0091] Step 104: Evaluate the uniformity of the thermal environment in each region based on the temperature distribution.

[0092] In this embodiment of the invention, when evaluating the non-uniform thermal environment indoors, it is necessary to evaluate not only the thermal environment differences between different areas but also the thermal environment uniformity within each area. When evaluating the thermal environment uniformity within each area, it is necessary to simultaneously evaluate the horizontal and vertical thermal environment uniformity within each area. For the process of evaluating the horizontal thermal environment uniformity within each area, the method includes: determining the maximum and minimum temperatures at different heights within each area based on the temperature distribution; calculating the temperature difference between the maximum and minimum temperatures at different heights; calculating the average value of the temperature differences at different heights; and evaluating the horizontal thermal environment uniformity within each area based on the calculated average value to obtain the horizontal thermal environment uniformity evaluation result. The method for evaluating the vertical thermal environment uniformity of each region includes: calculating the average temperature at different heights within each region based on the temperature distribution; determining the maximum and minimum average temperatures based on the average temperatures at different heights within each region; calculating the difference between the maximum and minimum average temperatures; and evaluating the vertical thermal environment uniformity of each region based on the difference between the maximum and minimum average temperatures to obtain a vertical thermal environment uniformity evaluation result. Further, based on the horizontal and vertical thermal environment uniformity evaluation results, the overall thermal environment uniformity of each region is evaluated.

[0093] Specifically, the relevant calculation formulas for the horizontal thermal environment uniformity are as follows:

[0094]

[0095]

[0096] in, This represents the horizontal thermal environment uniformity of region i. The larger the value, the worse the horizontal thermal environment uniformity. Let be the maximum and minimum temperature difference at the horizontal plane at height j within region i. These are the maximum and minimum temperatures at a horizontal plane at height j within region i, respectively. i It represents the number of different horizontal planes selected within region i.

[0097] Specifically, the relevant calculation formulas for the uniformity of the vertical thermal environment are as follows:

[0098]

[0099]

[0100] in, This represents the uniformity of the thermal environment in the vertical direction of region i. The larger this value is, the worse the uniformity of the thermal environment in the vertical direction. It is the average temperature of the horizontal plane at height j within region i. N is the temperature collected at a horizontal point at height j within region i. j,m It represents the number of temperature collection points at height j on the horizontal plane within region i.

[0101] Furthermore, in addition to using temperature to evaluate the uniformity of the thermal environment within a region, thermal perception PMV can also be used to evaluate the uniformity of the thermal environment within a region.

[0102] Step 105: Determine the evaluation result of the non-uniform thermal environment in the room based on the thermal environment differences between the regions and the thermal environment uniformity within the regions.

[0103] In this embodiment of the invention, when evaluating a non-uniform indoor thermal environment, it is necessary not only to evaluate the thermal environment differences between different areas and the thermal environment uniformity within each area, but also to evaluate the local thermal discomfort within each area. The method for evaluating local thermal discomfort within an area includes: determining the local temperature, local average air velocity, and local turbulence intensity of each area; calculating a draft risk index for each area based on the local temperature, the local average air velocity, and the local turbulence intensity; and evaluating the local thermal discomfort within each area based on the draft risk index. The specific calculation formula is as follows:

[0104]

[0105] Among them, DR is the wind-blown sensation risk index. The higher the wind-blown sensation risk index, the stronger the local thermal discomfort. T a,l The local temperature within the region. Let Tu represent the local average air velocity and Tu represent the local turbulence intensity. Furthermore, the temperature and air velocity at the location point can be obtained through sensor measurements or CFD simulations.

[0106] Meanwhile, determining the evaluation result of the non-uniform thermal environment in the room based on the thermal environment differences between the regions and the thermal environment uniformity within the regions includes: determining the evaluation result of the non-uniform thermal environment in the room based on the thermal environment differences between the regions, the thermal environment uniformity within the regions, and the local thermal discomfort within the regions.

[0107] It should be noted that when evaluating local thermal discomfort in a region, either the wind-blown risk index or other indicators can be used, and this embodiment of the invention does not specifically limit this.

[0108] This invention provides a method for evaluating non-uniform thermal environments to meet the differentiated needs of multiple regions. By analyzing the influence of non-uniform thermal environment influencing factors on thermal environment parameters at any location indoors, and based on this influence, evaluating the thermal environment differences between different regions indoors, as well as the thermal environment uniformity and local thermal discomfort within each region, this method can achieve the evaluation of non-uniform thermal environments to meet the differentiated needs of multiple regions.

[0109] Furthermore, as Figure 1 In specific implementation, embodiments of the present invention provide a non-uniform thermal environment evaluation device oriented towards the differentiated needs of multiple regions, such as... Figure 2 As shown, the device includes: an acquisition unit 21, a first determination unit 22, a first evaluation unit 23, a second evaluation unit 24, and a second determination unit 25.

[0110] The acquisition unit 21 can be used to acquire the temperature distribution in the room at the current moment.

[0111] The first determining unit 22 can be used to determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room based on the temperature distribution.

[0112] The first evaluation unit 23 can be used to evaluate the degree of thermal environment difference between different areas in the room based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room.

[0113] The second evaluation unit 24 can be used to evaluate the uniformity of the thermal environment in each region according to the temperature distribution.

[0114] The second determining unit 25 can be used to determine the evaluation result of the non-uniform thermal environment in the room based on the thermal environment difference between the regions and the thermal environment uniformity within the regions.

[0115] In specific application scenarios, when the non-uniform thermal environment influence factors include each air outlet, each heat source, and initial temperature conditions, the first determining unit 22, as follows: Figure 3 As shown, it includes: a calculation module 221 and a determination module 222.

[0116] The calculation module 221 can be used to calculate the excess temperature at any location in the room at the current moment based on the temperature distribution and the reference temperature. The excess temperature includes excess temperature caused only by each air outlet, excess temperature caused only by each heat source, and excess temperature caused only by the initial temperature conditions.

[0117] The determining module 222 can be used to determine, based on the excess temperature, the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room.

[0118] The determining module 222 can also be used to determine the degree of influence of each air outlet, each heat source, and the initial temperature condition on the thermal environment parameters at any location in the room, based on the air outlet's accessibility to the thermal environment parameters at any location in the room, the heat source's accessibility to the thermal environment parameters at any location in the room, and the initial temperature condition's accessibility to the thermal environment parameters at any location in the room.

[0119] Furthermore, the determining module 222 can be specifically used to calculate the excess supply air temperature of each air outlet based on the supply air temperature of each air outlet and the reference temperature; and to calculate the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room based on the excess temperature and the excess supply air temperature.

[0120] Furthermore, the determining module 222 can also be specifically used to calculate the average excess temperature of the exhaust vent in steady state based on the intensity of each heat source, air density, air specific heat capacity and indoor ventilation volume; and to calculate the heat source accessibility of each heat source to the thermal environment parameters at any location in the room based on the excess temperature and the average excess temperature of the exhaust vent in steady state.

[0121] Furthermore, the determining module 222 can also be specifically used to calculate the average temperature value based on the initial temperature distribution and the volume of the room; calculate the initial average excess temperature in the room based on the average temperature value and the reference temperature; and calculate the initial condition accessibility of the initial temperature conditions for thermal environment parameters at any location in the room based on the excess temperature and the initial average excess temperature in the room.

[0122] In a specific application scenario, the first evaluation unit 23 includes: a first evaluation module 231, a second evaluation module 232, a third evaluation module 233, and a fourth evaluation module 234.

[0123] The first evaluation module 231 can be used to evaluate the thermal environment difference between indoor areas based on the air supply accessibility of each air supply outlet to thermal environment parameters at any location in the room when the thermal environment difference between the areas is caused by each air supply outlet.

[0124] The second evaluation module 232 can be used to evaluate the thermal environment difference between indoor areas based on the heat source accessibility of each heat source to thermal environment parameters at any location indoors when the thermal environment difference between the areas is caused by each heat source.

[0125] The third evaluation module 233 can be used to evaluate the thermal environment difference between indoor areas when the thermal environment difference between the areas is caused by the initial temperature conditions, based on the initial condition accessibility of the thermal environment parameters at any location indoors under the initial temperature conditions.

[0126] The fourth evaluation module 234 can be used to calculate the temperature difference and / or thermal sensation difference between any two areas when the thermal environment difference between the areas is caused by at least two factors among the air outlets, the heat sources and the initial temperature conditions, and to evaluate the thermal environment difference between the indoor areas based on the temperature difference and / or the thermal sensation difference.

[0127] Furthermore, the first evaluation module 231 can be specifically used to calculate the air supply accessibility of each air supply outlet to each area of ​​the room based on the air supply accessibility of each air supply outlet to the thermal environment parameters at any location in the room; calculate the air supply accessibility difference of each air supply outlet to any two areas based on the air supply accessibility of each air supply outlet to each area in the room; divide the air supply accessibility difference into two categories according to the positive or negative sign of the air supply accessibility difference, and add the air supply accessibility differences belonging to the same category to obtain the sum of the air supply accessibility differences of each air supply outlet to any two areas in two directions; evaluate the thermal environment difference between the areas in the room based on the sum of the air supply accessibility differences of each air supply outlet to any two areas in two directions.

[0128] Furthermore, the second evaluation module 232 can be specifically used to calculate the heat source accessibility of each heat source to each area of ​​the room based on the heat source accessibility of each heat source to the thermal environment parameters at any location in the room; calculate the heat source accessibility difference of each heat source to any two areas based on the heat source accessibility of each heat source to each area in the room; divide the heat source accessibility difference into two categories according to the positive or negative sign of the heat source accessibility difference, and add the heat source accessibility differences belonging to the same category to obtain the sum of the heat source accessibility differences of each heat source to any two areas in two directions; evaluate the degree of thermal environment difference between the areas in the room based on the sum of the heat source accessibility differences of each heat source to any two areas in two directions.

[0129] Furthermore, the third evaluation module 233 can be specifically used to calculate the initial condition accessibility of the initial temperature conditions for each area of ​​the room based on the initial condition accessibility of the thermal environment parameters at any location in the room; to calculate the initial condition accessibility difference of the initial temperature conditions for any two areas based on the initial condition accessibility of the initial temperature conditions for each area of ​​the room; and to evaluate the thermal environment difference between each area of ​​the room based on the initial condition accessibility difference of the initial temperature conditions for any two areas.

[0130] In a specific application scenario, the second evaluation unit 24 can be specifically used to: determine the maximum and minimum temperatures at different heights within each region based on the temperature distribution; calculate the temperature difference between the maximum and minimum temperatures at different heights; calculate the average value of the temperature differences at different heights; evaluate the horizontal thermal environment uniformity within each region based on the calculated average value, obtaining a horizontal thermal environment uniformity evaluation result; calculate the average temperature at different heights within each region based on the temperature distribution; determine the maximum and minimum average temperatures based on the average temperatures at different heights within each region; calculate the difference between the maximum and minimum average temperatures based on the maximum and minimum average temperatures; evaluate the vertical thermal environment uniformity within each region based on the difference between the maximum and minimum average temperatures, obtaining a vertical thermal environment uniformity evaluation result; and evaluate the thermal environment uniformity within each region based on the horizontal and vertical thermal environment uniformity evaluation results.

[0131] In specific application scenarios, the device further includes a computing unit 26.

[0132] The first determining unit 22 can also be used to determine the local temperature, local average air velocity, and local turbulence intensity in each region.

[0133] The calculation unit 26 can be used to calculate the wind-induced risk index of each region based on the local temperature, the local average air velocity, and the local turbulence intensity.

[0134] The first evaluation unit 23 can also be used to evaluate the local thermal discomfort in each area based on the wind-blown risk index.

[0135] The second determining unit 25 can be specifically used to determine the evaluation result of the non-uniform thermal environment in the room based on the thermal environment difference between the regions, the thermal environment uniformity in the regions, and the local thermal discomfort in the regions.

[0136] It should be noted that other corresponding descriptions of the functional modules involved in the non-uniform thermal environment evaluation device for multi-regional differentiated needs provided in this embodiment of the invention can be found in the following references. Figure 1 The corresponding description of the method shown will not be repeated here.

[0137] Based on the above, Figure 1 Accordingly, this embodiment of the invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the following steps: acquiring the temperature distribution of the room at the current moment; determining the degree of influence of a non-uniform thermal environment influence factor on thermal environment parameters at any location in the room based on the temperature distribution; evaluating the degree of thermal environment difference between different areas in the room based on the degree of influence of the non-uniform thermal environment influence factor on thermal environment parameters at any location in the room; evaluating the thermal environment uniformity of each area based on the temperature distribution; and determining the evaluation result of the non-uniform thermal environment in the room based on the degree of thermal environment difference between the areas and the thermal environment uniformity of each area.

[0138] Based on the above, Figure 1 The method shown and as Figure 2 The embodiment of the device shown in the invention also provides a physical structural diagram of an electronic device, such as... Figure 4 As shown, the electronic device includes a processor 31, a memory 32, and a computer program stored in the memory 32 and executable on the processor. Both the memory 32 and the processor 31 are mounted on a bus 33. When the processor 31 executes the program, it performs the following steps: acquiring the current indoor temperature distribution; determining the degree of influence of a non-uniform thermal environment influence factor on thermal environment parameters at any location indoors based on the temperature distribution; evaluating the degree of thermal environment difference between different areas indoors based on the degree of influence of the non-uniform thermal environment influence factor on thermal environment parameters at any location indoors; evaluating the thermal environment uniformity within each area based on the temperature distribution; and determining the evaluation result of the non-uniform thermal environment within the room based on the thermal environment difference between the areas and the thermal environment uniformity within each area.

[0139] This invention analyzes the influence of non-uniform thermal environment factors on thermal environment parameters at any location indoors, and evaluates the thermal environment differences between different areas of the room and the thermal environment uniformity within each area based on the degree of influence. This enables the evaluation of non-uniform thermal environments that meet the differentiated needs of multiple areas.

[0140] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of one embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing the present invention.

[0141] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for evaluating non-uniform thermal environments to meet the differentiated needs of multiple regions, characterized in that, include: Obtain the current indoor temperature distribution; Based on the temperature distribution, determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors; Based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room, evaluate the degree of thermal environment difference between different areas in the room. The uniformity of the thermal environment in each region is evaluated based on the temperature distribution. The evaluation result of the non-uniform thermal environment in the room is determined based on the thermal environment differences between the regions and the thermal environment uniformity within the regions. When the non-uniform thermal environment influence factor includes each air outlet, each heat source, and initial temperature conditions, the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors is determined based on the temperature distribution, including: Based on the temperature distribution and reference temperature, calculate the excess temperature at any location in the room at the current moment, wherein the excess temperature includes excess temperature caused only by each air outlet, excess temperature caused only by each heat source, and excess temperature caused only by the initial temperature conditions; Based on the excess temperature, determine the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room. Based on the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room, the degree of influence of each air outlet, each heat source, and the initial temperature conditions on the thermal environment parameters at any location in the room is determined. Based on the excess temperature, determine the air supply accessibility of each air outlet to the thermal environment parameters at any location indoors, including: Calculate the excess air supply temperature of each air outlet based on the air supply temperature of each air outlet and the reference temperature. Based on the excess temperature and the excess supply air temperature, calculate the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room. Based on the excess temperature, determine the heat source accessibility of each heat source to the thermal environment parameters at any location indoors, including: Calculate the average excess temperature of the exhaust vent under steady state based on the intensity of each heat source, air density, air specific heat capacity, and indoor ventilation volume. Based on the excess temperature and the average excess temperature of the exhaust vent in steady state, calculate the heat source accessibility of each heat source to the thermal environment parameters at any location in the room. Based on the excess temperature, determine the initial condition accessibility of the initial temperature conditions for thermal environment parameters at any location indoors, including: Calculate the average temperature value based on the initial temperature distribution and room volume. Calculate the initial average excess temperature indoors based on the average temperature value and the reference temperature; Based on the excess temperature and the initial average excess temperature in the room, calculate the initial condition accessibility of the initial temperature conditions for thermal environment parameters at any location in the room.

2. The method according to claim 1, characterized in that, Based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors, evaluate the degree of thermal environment difference between different areas indoors, including: When the thermal environment difference between the areas is caused by the air outlets, the thermal environment difference between the areas is evaluated based on the air supply accessibility of the air outlets to the thermal environment parameters at any location in the room. When the thermal environment difference between the regions is caused by the heat sources, the thermal environment difference between the regions is evaluated based on the heat source accessibility of the heat source to the thermal environment parameters at any location in the room. When the difference in thermal environment between the regions is caused by the initial temperature conditions, the difference in thermal environment between the regions is evaluated based on the initial condition accessibility of the thermal environment parameters at any location in the room under the initial temperature conditions. When the difference in thermal environment between the zones is caused by at least two factors among the air outlets, heat sources, and initial temperature conditions, the temperature difference and / or thermal sensation difference between any two zones is calculated, and the difference in thermal environment between the zones in the room is evaluated based on the temperature difference and / or thermal sensation difference.

3. The method according to claim 2, characterized in that, Based on the air supply accessibility of each air outlet to thermal environment parameters at any location within the room, the thermal environment differences between different areas of the room are evaluated, including: Based on the air supply accessibility of each air supply outlet to the thermal environment parameters at any location in the room, calculate the air supply accessibility of each air supply outlet to each area in the room. Based on the air supply accessibility of each air supply outlet to each area of ​​the room, calculate the air supply accessibility difference between any two areas for each air supply outlet. According to the positive or negative sign of the air supply accessibility difference, the air supply accessibility difference is divided into two categories, and the air supply accessibility differences belonging to the same category are added together to obtain the sum of the air supply accessibility differences of each air outlet for any two areas in two directions. The thermal environment differences between indoor areas are evaluated based on the sum of the differences in air supply accessibility of each air outlet to any two areas in two directions. Based on the heat source accessibility of each heat source to thermal environment parameters at any location within the room, the degree of thermal environment difference between different areas of the room is evaluated, including: Based on the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, calculate the heat source accessibility of each heat source to each area in the room. Based on the heat source accessibility of each heat source to each area of ​​the room, calculate the heat source accessibility difference of each heat source to any two areas; According to the positive or negative sign of the heat source accessibility difference, the heat source accessibility difference is divided into two categories, and the heat source accessibility differences belonging to the same category are added together to obtain the sum of the heat source accessibility differences of each heat source to any two regions in two directions. The thermal environment differences between indoor areas are evaluated based on the sum of the differences in heat source accessibility between any two areas in two directions for each heat source. Based on the initial temperature conditions and the accessibility of thermal environment parameters at any location within the room, the degree of thermal environment difference between different areas of the room is evaluated, including: Based on the accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room, calculate the accessibility of the initial temperature conditions to each area in the room. Based on the accessibility of the initial conditions for each area of ​​the room under the initial temperature conditions, calculate the difference in accessibility of the initial conditions for any two areas under the initial temperature conditions. The difference in thermal environment between indoor areas is evaluated based on the difference in accessibility of initial conditions between any two areas under the initial temperature conditions.

4. The method according to any one of claims 1-3, characterized in that, Based on the temperature distribution, the thermal environment uniformity of each region is evaluated, including: Based on the temperature distribution, determine the maximum and minimum temperatures at different altitudes within each region; Calculate the temperature difference between the maximum and minimum temperatures at the different altitudes; Calculate the average value of the temperature difference at different heights; Based on the calculated average value, the horizontal thermal environment uniformity of each region is evaluated to obtain the evaluation result of the horizontal thermal environment uniformity. Based on the temperature distribution, calculate the average temperature at different altitudes within each region; The maximum and minimum average temperatures are determined based on the average temperatures at different altitudes within each region. Calculate the difference between the maximum average temperature and the minimum average temperature based on the maximum average temperature and the minimum average temperature; The vertical thermal environment uniformity of each region is evaluated based on the difference between the maximum average temperature and the minimum average temperature, and the evaluation result of the vertical thermal environment uniformity is obtained. The thermal environment uniformity of each region is evaluated based on the evaluation results of the horizontal thermal environment uniformity and the evaluation results of the vertical thermal environment uniformity.

5. The method according to any one of claims 1-3, characterized in that, The method further includes: The local temperature, local average air velocity, and local turbulence intensity are determined for each of the aforementioned regions. Calculate the wind chill risk index for each region based on the local temperature, the local average air velocity, and the local turbulence intensity. Based on the aforementioned wind-blown sensation risk index, evaluate the local thermal discomfort in each area; The determination of the indoor non-uniform thermal environment evaluation result based on the thermal environment differences between the regions and the thermal environment uniformity within the regions includes: The evaluation result of the non-uniform thermal environment in the room is determined based on the thermal environment differences between the regions, the thermal environment uniformity within the regions, and the local thermal discomfort within the regions.

6. A non-uniform thermal environment evaluation device for multi-regional differentiated needs, characterized in that, include: The acquisition unit is used to acquire the current temperature distribution indoors. The first determining unit is used to determine the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location indoors, based on the temperature distribution. The first evaluation unit is used to evaluate the degree of thermal environment difference between different areas of the room based on the degree of influence of the non-uniform thermal environment influence factor on the thermal environment parameters at any location in the room. The second evaluation unit is used to evaluate the uniformity of the thermal environment in each region based on the temperature distribution. The second determining unit is used to determine the evaluation result of the non-uniform thermal environment in the room based on the thermal environment difference between the regions and the thermal environment uniformity within the regions. When the non-uniform thermal environment influence factors include each air outlet, each heat source and initial temperature conditions, the first determining unit includes: a calculation module and a determining module; The calculation module is used to calculate the excess temperature at any location in the room at the current moment based on the temperature distribution and the reference temperature. The excess temperature includes excess temperature caused only by each air outlet, excess temperature caused only by each heat source, and excess temperature caused only by the initial temperature conditions. The determining module is used to determine, based on the excess temperature, the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room, the heat source accessibility of each heat source to the thermal environment parameters at any location in the room, and the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room. The determining module is further configured to determine the degree of influence of each air outlet, each heat source, and the initial temperature condition on the thermal environment parameters at any location in the room, based on the air outlet's air supply accessibility to the thermal environment parameters at any location in the room, the heat source's heat source accessibility to the thermal environment parameters at any location in the room, and the initial temperature condition's initial condition accessibility to the thermal environment parameters at any location in the room. The determining module is specifically used to calculate the excess supply air temperature of each air outlet based on the supply air temperature of each air outlet and the reference temperature; and to calculate the air supply accessibility of each air outlet to the thermal environment parameters at any location in the room based on the excess temperature and the excess supply air temperature. The determining module is specifically used to calculate the average excess temperature of the exhaust vent in steady state based on the intensity of each heat source, air density, air specific heat capacity and indoor ventilation volume; and to calculate the heat source accessibility of each heat source to the thermal environment parameters at any location in the room based on the excess temperature and the average excess temperature of the exhaust vent in steady state. The determining module is specifically used to calculate the average temperature value based on the initial temperature distribution and the volume of the room; calculate the initial average excess temperature in the room based on the average temperature value and the reference temperature; and calculate the initial condition accessibility of the initial temperature conditions to the thermal environment parameters at any location in the room based on the excess temperature and the initial average excess temperature in the room.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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