EP4508559A1 - Charakterisierung eines klimatisierten raums - Google Patents
Charakterisierung eines klimatisierten raumsInfo
- Publication number
- EP4508559A1 EP4508559A1 EP23734147.4A EP23734147A EP4508559A1 EP 4508559 A1 EP4508559 A1 EP 4508559A1 EP 23734147 A EP23734147 A EP 23734147A EP 4508559 A1 EP4508559 A1 EP 4508559A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air conditioning
- virtual model
- room
- simulated
- interior
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Definitions
- the invention relates to a method by means of which it is possible to characterize the air conditioning of a room.
- the invention further relates to a system for carrying out the method, a computer program and a computer-readable medium.
- Air conditioning in offices or passenger compartments primarily serves the purpose of ventilating the area and achieving a certain level of comfort or well-being, particularly thermal comfort. If, on the other hand, storage rooms are air-conditioned, the aim of the air conditioning is to store stored goods, such as food or furniture, for as long as possible with as little disruption as possible.
- extensive measurements of parameters such as the measurement of temperature, air humidity or flow velocities in this room have been required. For rail-bound vehicles, for example, such requirements are standardized in requirement profiles.
- requirements for comfort in rail-bound vehicles are specified using the technical standards EN 13129, EN 14750 or EN 14813.
- this characterization has so far only been possible using complex measurement setups. For example, a spatial temperature distribution, a spatial and/or temporal variation of flow velocities within the room or a value distribution of air humidity within the room are measured.
- requirement profiles A distinction is made between those which refer to a thermodynamically stationary state and those which refer to a thermodynamically unsteady state. Depending on the requirement profile, characterizing the air conditioning of a room involves a very extensive measurement effort.
- the object of the invention is to provide a simplified and inexpensive method for characterizing the air conditioning of a room.
- the invention is based on the object of providing a system for carrying out the method according to the invention.
- a further object of the invention is to provide a computer program and a computer program product.
- the values of a parameter related to air conditioning are determined in a room.
- air conditioning is to be understood as air treatment in the sense of indoor air technology, in which air is treated, which before a room is supplied or discharged. Temperature control, dehumidification or disinfection are usually carried out using air conditioning.
- a parameter that affects the air conditioning of a room is, for example, a temperature, a humidity or a flow velocity.
- the method according to the invention is a computer-implemented method.
- the method according to the invention is preferably a method for characterizing the air conditioning of a room.
- the method according to the invention provides for creating a virtual model of a real space.
- the virtual model of the real room has an interior furnishings and/or people or objects that are usually in the real room.
- the virtual model of the real room depicts a duct system with supply and exhaust air openings of an air conditioning system.
- a virtual model of a real air conditioning device is created.
- This air conditioning device preferably has essential components required for air conditioning, such as a refrigeration circuit, a compressor, a fan, a heat exchanger and/or a heating device.
- air conditioning of the virtual model of the real room is then simulated by the virtual air conditioning device.
- the virtual model of the air conditioning device is preferably virtually linked to the pipe system located in the virtual model of the real room and thus to the supply and exhaust air openings distributed within the room.
- This also makes it possible to make improvements to the virtual model of the room and/or the air conditioning unit based on changes in the position of the supply and exhaust air openings as well as on the basis of a change in a cross-sectional area or a geometry of the supply and exhaust air openings.
- a position of cable runs or an arrangement and positioning of an interior device is optimized with a view to improved air conditioning. Characteristics of air conditioning in the room can be easily optimized in this way.
- the method according to the invention provides for determining at least two values of the parameter by means of the simulated air conditioning of the room.
- the values of the parameter determined in this way are then compared with a predeterminable requirement profile. These determined values are then preferably output.
- the air conditioning of a room can be easily characterized. For example, requirements for comfort and/or comfort caused by air conditioning in a room can be easily verified.
- the effects of the aforementioned changes within the room on the air conditioning can be quickly determined.
- a previously complex and cost-intensive verification of room air conditioning requirements can be simplified and accelerated.
- complex and extensive measurement setups can be dispensed with.
- the process is also suitable for saving costs, personnel costs and time. In particular, energy costs incurred when characterizing the air conditioning of the room can be saved.
- An advantageous development provides that the air conditioning of the room is simulated using control software intended to operate the real air conditioning device.
- the effects and optimization options through the intended control software can be easily determined. In this way, possible software-related errors can be identified and corrected quickly and easily.
- an advantageous development provides that the virtual model of the real air conditioning device is controlled by means of a virtual model of a control device provided for the purpose of controlling the real air conditioning device. This makes it possible to set values of the parameter on one to determine in a realistic way. In addition, a cost-effective optimization and a determination of the operational reliability of the control device can be carried out in a virtualized state.
- the model of the room is created as a detailed virtual model. Based on the detailed virtual model of the room, air conditioning is simulated in a thermodynamically stationary state. In this way, precise values of the parameter can be determined.
- a detailed geometry of side walls, a floor and a ceiling is preferably taken into account. It is also conceivable that the detailed virtual space takes into account the structure of the side walls, the floor and the ceiling. For example, the influence of insulation layers or possible cold and thermal bridges can be included in the simulation.
- a detailed virtual model of the room is particularly suitable for determining a temperature distribution in the room or flow velocities at predetermined points in the room.
- thermodynamically stationary state In the context of the thermodynamically stationary state, the space under consideration is preferably in a state of equilibrium. In particular, external influences are kept constant. In addition, during a simulation of the air conditioning in a thermo- dynamic stationary state no change in position of people or objects within the virtual model of the room is provided.
- the virtual model of the room is created as an abstracted virtual model.
- the abstracted virtual model is modeled in a simplified manner compared to the detailed virtual model of the room.
- the abstracted model of the room is the detailed model of the room in a reduced resolution and/or with a reduced spatial dimension, such as a 2D model or even an ID model.
- air conditioning in a thermodynamically unsteady state is simulated.
- predetermined external conditions such as an outside temperature or an external humidity, are subject to a change over time.
- a movement of people in the room, an increase or decrease in air humidity and/or temperature due to people or changes of people in the room, or a change in the position of interior furnishings in the room can be taken into account as influencing variables on the air conditioning of the room become .
- the abstracted model of the room thus enables the air conditioning of the room to be simulated in real time.
- an advantageous development provides that at least part of the virtual model of the room and/or at least part of the virtual model of the air conditioning device is created as a three-dimensional numerical fluid mechanics model.
- the values of the parameter can be determined using a three-dimensional numerical flow simulation known to those skilled in the art, also referred to as 3D CFD flow simulation. So you can ne reliable determination of a three-dimensional distribution of thermodynamic variables in the space can be determined.
- a further advantageous development provides that a virtual model of an interior of a rail-bound vehicle is created.
- the interior space mentioned can be, among other things, a passenger compartment, an on-board bistro, a driver's cab or a storage room.
- values of the parameter within the interior are determined.
- the otherwise very complex characterization of large interior spaces and the associated complex measurement setup can be greatly simplified in this way.
- a cost-effective method can be provided in this way.
- a simple and cost-effective optimization and characterization of the air conditioning of the interior of the rail-bound vehicle can be carried out in this way.
- An advantageous embodiment variant of the further development provides that a value distribution of the parameter in the room is determined by means of the simulated air conditioning of the interior of the rail-bound vehicle.
- the number of measurement points is usually limited due to the associated effort and costs. Therefore, in these cases, interpolation of measured values between the individual measuring points was usually used. However, this involves a certain degree of uncertainty. Due to the simulation of the air conditioning of the interior of the rail-bound vehicle, it is easy to select an arbitrarily dense network of measuring points and can be determined inexpensively. This allows a
- a further advantageous development provides that a changing number of passengers, pieces of luggage and/or other general cargo within the interior is simulated using the virtual model of the interior of the rail-bound vehicle.
- the advantageous embodiment variant provides that a changing position of passengers, luggage and/or other general cargo within the interior is simulated using the virtual model of the interior of the rail-bound vehicle.
- a simulation is carried out using the abstracted model of the space already described above. In this way, realistic processes within the rail-bound vehicle, such as changing passengers or changing luggage, can be simulated in real time.
- the method according to the invention can be carried out with the system according to the invention.
- the system according to the invention has a data processing device.
- This data processing device is set up to carry out the method according to the invention.
- the data processing device can be a computer, a microcontroller, a processor or a programmable hardware component.
- the data processing device is a virtualized hardware resource of a computer cloud or a runtime environment with changeable computing and/or storage capacities. In the present context, such a runtime environment should be understood in the sense of computer science.
- the runtime environment is configured to read, write, transfer and/or manage data.
- the system also has a control device. This control device is set up to operate a real air conditioning system. to control the device.
- the air conditioning device mentioned is the air conditioning device previously described in connection with the method.
- control device can be connected to the data processing device in such a way that air conditioning simulated using the data processing device can be controlled. In this way, particularly realistic circumstances can be taken into account when determining the values.
- system enables a cost-effective determination of values of a parameter relating to the air conditioning of a room. In addition, the quality of the values determined can be improved in this way.
- a computer program which comprises commands which, when the computer program is executed by a data processing device, cause it to carry out the method according to the invention.
- the data processing device mentioned is in particular the data processing device already described above.
- the invention further provides a computer-readable medium.
- This has instructions which, when executed by a data processing device, cause it to carry out the method according to the invention.
- the data processing device mentioned is in particular the data processing device already described above.
- the computer-readable medium has instructions which, when executed on the data processing device, cause the system according to the invention to carry out the method according to the invention.
- the computer-readable medium can be, for example, a CD-ROM, a DVD, a USB or Flash memory or a non-physical medium, such as a data stream and/or a disk signal.
- FIG. 1 shows a first example of the method according to the invention, in which values of a parameter related to air conditioning are determined in a thermodynamically stationary state
- FIG. 3 shows an exemplary embodiment of the system according to the invention in a schematic representation and an illustration of the first and second examples of the method according to the invention.
- 1 schematically illustrates a first example of a method 100 for characterizing air conditioning of an interior of a rail-bound vehicle.
- values of a parameter related to air conditioning are determined in a thermodynamically stationary state 108.
- the parameter mentioned can be, for example, a temperature, a flow velocity and/or an air humidity.
- a virtual model of the interior 10 has, for example, a predetermined temperature and a predetermined humidity, which differs in particular from an outside temperature and a humidity outside the interior 10.
- a temperature distribution in the interior 10 is determined 108 as an example parameter below.
- a determination of a flow velocity, a distribution of air humidity and/or a distribution of atmospheric oxygen values or CO/CO2 values in the interior 10 are conceivable, among other things.
- the virtual model of the interior 10 is created 102 as a detailed model of the real interior of the rail-bound vehicle.
- a three-dimensional numerical flow simulation model of the real interior is created as an example 102. This includes, among other things, seats, luggage racks, aisles and compartment areas that are not shown in detail.
- a ventilation system and associated supply and exhaust air openings are provided for distributing treated room air.
- a virtual model of a real air conditioning device (not shown in detail) is created 104.
- This virtualized air conditioning device 12 has, for example, a refrigeration circuit (not shown) with a compressor and a heat exchanger as well as a heating register.
- operation of the virtual air conditioning device 12 is simulated 106 using control software provided for operating the real air conditioning device.
- the virtual model of the air conditioning device 12 is controlled 112 by means of the real control device 18, which is set up to control the real air conditioning device.
- air conditioning of the virtual interior 10 is simulated 106 by the virtual air conditioning device 12.
- a temperature distribution within the interior 10 in the thermodynamically stationary state is determined 108 in this way.
- the temperature values determined in this way are then compared 110 with a requirement profile for the temperature value distribution.
- This requirement profile can be the requirement profile specified by a technical standard.
- One such standard is, for example, EN 13129, EN 14750, EN 14813.
- the temperature distribution determined is output 114 in the example of method 100 described here.
- the output 114 can, for example, be visualized on a screen. It is conceivable that the temperature values within the interior 10 are displayed in color-coded form 114.
- FIG. 2 schematically illustrates a second example of a method 200 for characterizing air conditioning of the interior of the rail-bound vehicle described in connection with FIG. 1.
- values of a parameter related to air conditioning are determined 208 in a thermodynamically unsteady state.
- a time-changing virtual model of the real interior is created 202.
- This virtual model of the interior 10 is also created 202 as an abstracted model of the real interior.
- a resolution of the detailed, three-dimensional numerical fluid mechanics model explained in connection with FIG. 1 is reduced.
- thermodynamic states that change over time can also be simulated 206.
- this makes it possible to realize a simulation 206 of the air conditioning of the interior 10 in real time.
- a changing number of passengers, pieces of luggage and/or other general cargo within the interior 10 is simulated 206 using the virtual model of the interior 10 of the rail-bound vehicle.
- a changing position of passengers, luggage and/or other piece of cargo in the interior 10 as well as an influence of these processes can be simulated 206.
- the parameter can relate to an oxygen concentration or a carbon dioxide concentration, which is influenced by a number and a position of people in the interior 10.
- a virtual model of a real air conditioning device 12 is created 204.
- the air conditioning of the virtual interior 10 is simulated 206 in the aforementioned manner.
- the virtual air conditioning device 12 is controlled 212 by means of a real control device 18 provided for the purpose of controlling the real air conditioning device.
- This real control device 18 is also operated using the control software provided for operating the real air conditioning device.
- the air conditioning of the interior 10 is simulated 206 using the control software provided for operating the real air conditioning device.
- the control software provided for operating the real air conditioning device.
- an initially not shown virtual model of the real control device 18 is created and the virtual model of the air conditioning device 12 is controlled 212 using this virtual control device 18.
- operation of the air conditioning device 12 would be simulated 206 using software provided for controlling the real air conditioning device.
- a value distribution of a temperature in this interior 10 is determined 208 by way of example. Furthermore, it is conceivable that a flow velocity, air humidity or other parameters relating to the air conditioning of the interior are determined 208, in particular in parallel to the determination of the temperature values. In addition, in the present example of the method 200, time courses of the respective determined values of the parameter are determined 208. These determined values are then compared 210 with the predeterminable requirement profile described by way of example in connection with FIG. Parameters that are difficult to measure and prove and which relate to the characterization of the air conditioning in a transient state can be reliably determined in this way. Furthermore, this enables simple and reliable proof of the fulfillment of a predeterminable requirement profile.
- the temperature values determined by way of example in the manner described above, as well as other conceivable values of the parameter relating to the air conditioning, such as flow velocity and/or air humidity values, are output 214 by way of example by means of a display device 20, not initially shown in more detail. It is conceivable that the determined 208 temperature distribution within the interior 10 is displayed in a color-coded, visualized form 214.
- FIG. 3 shows an exemplary embodiment of a system 14 in a schematic representation.
- This system 14 has a data processing device 16.
- This data processing device 16 is set up to carry out both the first example of the method 100 described in connection with FIG. 1 and the second example of the method 200 described in connection with FIG. 2.
- the system 14 has a control device 18 which is set up to control the operation of a real air conditioning device.
- the real air conditioning device mentioned is in particular one of the type described in connection with FIG. 1 and/or FIG. 2.
- this control device 18 is connected to the data processing device 16 in such a way that an air conditioning 106, 206 of the virtual model of the interior 10 simulated by means of the data processing device 16 can be controlled 112, 212.
- FIG. 3 illustrates by way of example that the simulated air conditioning 106, 206 of the interior 10 is at least partially controlled 112, 212 by means of the control device 18.
- FIG. 3 shows an example of a display device 20, which displays an example of a virtual model of an interior 10 of a rail-bound vehicle and a virtual model of an air conditioning device 12.
- FIG. 3 illustrates by way of example that by means of the data processing device 16, an air conditioning of the virtual interior 10 by the virtual one based on a simulation 106, 206 Air conditioning device 12 determined 108, 208 temperature distribution is compared 110, 210 with a predetermined requirement profile.
- relative or absolute deviations of the determined actual values from target values of the requirement profile are optionally output 114, 214 in color coded form using the display device 20.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022206620 | 2022-06-29 | ||
| PCT/EP2023/065646 WO2024002668A1 (de) | 2022-06-29 | 2023-06-12 | Charakterisierung eines klimatisierten raums |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4508559A1 true EP4508559A1 (de) | 2025-02-19 |
Family
ID=87047648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23734147.4A Pending EP4508559A1 (de) | 2022-06-29 | 2023-06-12 | Charakterisierung eines klimatisierten raums |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4508559A1 (de) |
| WO (1) | WO2024002668A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016212940A1 (de) * | 2016-07-15 | 2018-01-18 | Siemens Aktiengesellschaft | Verfahren zur Steuerung einer Belüftung eines Innenraums und Detektions-Steuer-Einrichtung |
| ES2976014T3 (es) * | 2019-08-02 | 2024-07-19 | Siemens Mobility GmbH | Procedimiento para el control de una unidad de aire acondicionado |
| CN111666723A (zh) * | 2020-05-23 | 2020-09-15 | 上海海洋大学 | 一种基于数值模拟的大空间全空气空调系统优化设计方法 |
-
2023
- 2023-06-12 EP EP23734147.4A patent/EP4508559A1/de active Pending
- 2023-06-12 WO PCT/EP2023/065646 patent/WO2024002668A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024002668A1 (de) | 2024-01-04 |
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Owner name: SIEMENS MOBILITY GMBH |