Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room
This paper is devoted to modelling of temperature distribution and its time evolution in rooms with specific thermal insulation and heat transfer for different external conditions. The simulation results should help to design the room architecture and wall materials to reduce energy losses due to he...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-11-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/11/11/3205 |
| _version_ | 1811304946239275008 |
|---|---|
| author | Hana Charvátová Aleš Procházka Martin Zálešák |
| author_facet | Hana Charvátová Aleš Procházka Martin Zálešák |
| author_sort | Hana Charvátová |
| collection | DOAJ |
| description | This paper is devoted to modelling of temperature distribution and its time evolution in rooms with specific thermal insulation and heat transfer for different external conditions. The simulation results should help to design the room architecture and wall materials to reduce energy losses due to heating or cooling, and to increase the inside thermal comfort. For this purpose, a methodological procedure using real data processing in the COMSOL Multiphysics modelling environment and spatial visualization of temperature evolution is proposed. This paper describes a mathematical model for simulation of the temperature evolution inside a space with thermally insulated walls under selected outside conditions. Computer simulations are then used to assess the temperature distribution inside the room and the heat flow through the room walls. Results of the simulations are used for subsequent determination of the time needed for the desired decrease of air temperature inside the tested room during its cooling due to the low ambient temperature, which is related to the thermal stability of the building, specific heat capacity, and thickness of the thermal insulation. Under the studied conditions, the time to reach the temperature drops by 20 percent in a room with windows was from 1.4 to 1.8 times lower than that in the room without windows. The proposed methodology shows the flexibility of computer modelling in the design of insulated building systems. The mesh density testing was performed by comparing the air temperature evolution in the model of the selected mesh density and the model with its maximum value enabled by the size of computer memory. The maximum temperature deviation calculated for the mesh of the presented model was 0.57%. |
| first_indexed | 2024-04-13T08:16:37Z |
| format | Article |
| id | doaj.art-3124d3b3ff474c00aa42c35c4a93261c |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:16:37Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3124d3b3ff474c00aa42c35c4a93261c2022-12-22T02:54:46ZengMDPI AGEnergies1996-10732018-11-011111320510.3390/en11113205en11113205Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated RoomHana Charvátová0Aleš Procházka1Martin Zálešák2Faculty of Applied Informatics, Tomas Bata University in Zlín, 760 05 Zlín, Czech RepublicDepartment of Computing and Control Engineering, University of Chemistry and Technology in Prague, 166 28 Prague, Czech RepublicFaculty of Applied Informatics, Tomas Bata University in Zlín, 760 05 Zlín, Czech RepublicThis paper is devoted to modelling of temperature distribution and its time evolution in rooms with specific thermal insulation and heat transfer for different external conditions. The simulation results should help to design the room architecture and wall materials to reduce energy losses due to heating or cooling, and to increase the inside thermal comfort. For this purpose, a methodological procedure using real data processing in the COMSOL Multiphysics modelling environment and spatial visualization of temperature evolution is proposed. This paper describes a mathematical model for simulation of the temperature evolution inside a space with thermally insulated walls under selected outside conditions. Computer simulations are then used to assess the temperature distribution inside the room and the heat flow through the room walls. Results of the simulations are used for subsequent determination of the time needed for the desired decrease of air temperature inside the tested room during its cooling due to the low ambient temperature, which is related to the thermal stability of the building, specific heat capacity, and thickness of the thermal insulation. Under the studied conditions, the time to reach the temperature drops by 20 percent in a room with windows was from 1.4 to 1.8 times lower than that in the room without windows. The proposed methodology shows the flexibility of computer modelling in the design of insulated building systems. The mesh density testing was performed by comparing the air temperature evolution in the model of the selected mesh density and the model with its maximum value enabled by the size of computer memory. The maximum temperature deviation calculated for the mesh of the presented model was 0.57%.https://www.mdpi.com/1996-1073/11/11/3205thermal stability of buildingCOMSOL Multiphysicscomputer simulation3D modeldetermination of temperature decrease for cooling the roomsignal processingsmart city |
| spellingShingle | Hana Charvátová Aleš Procházka Martin Zálešák Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room Energies thermal stability of building COMSOL Multiphysics computer simulation 3D model determination of temperature decrease for cooling the room signal processing smart city |
| title | Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room |
| title_full | Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room |
| title_fullStr | Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room |
| title_full_unstemmed | Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room |
| title_short | Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room |
| title_sort | computer simulation of temperature distribution during cooling of the thermally insulated room |
| topic | thermal stability of building COMSOL Multiphysics computer simulation 3D model determination of temperature decrease for cooling the room signal processing smart city |
| url | https://www.mdpi.com/1996-1073/11/11/3205 |
| work_keys_str_mv | AT hanacharvatova computersimulationoftemperaturedistributionduringcoolingofthethermallyinsulatedroom AT alesprochazka computersimulationoftemperaturedistributionduringcoolingofthethermallyinsulatedroom AT martinzalesak computersimulationoftemperaturedistributionduringcoolingofthethermallyinsulatedroom |