Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F18%3A63519893" target="_blank" >RIV/70883521:28140/18:63519893 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21730/18:00328952 RIV/60461373:22340/18:43915775

Result on the web

<a href="https://www.mdpi.com/1996-1073/11/11/3205" target="_blank" >https://www.mdpi.com/1996-1073/11/11/3205</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/en11113205" target="_blank" >10.3390/en11113205</a>

Result language

angličtina

Original language name

Computer Simulation of Temperature Distribution during Cooling of the Thermally Insulated Room

Original language 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%.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ENERGIES

ISSN

1996-1073

e-ISSN

—

Volume of the periodical

neuveden

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

16

Pages from-to

"nestrankovano"

UT code for WoS article

000451814000343

EID of the result in the Scopus database

2-s2.0-85057896772