Modeling of three-dimensional heat transfer in building envelopes
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2023-07-28 17:34
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KRESOVA, Elena, KUNDAS, Semjon. Modeling of three-dimensional heat transfer in building envelopes. In: Tendinţe contemporane ale dezvoltării ştiinţei: viziuni ale tinerilor cercetători, Ed. 3, 10 martie 2014, Chișinău. Chișinău, Republica Moldova: Universitatea Academiei de Ştiinţe a Moldovei, 2014, Editia 3, T, p. 12. ISBN 978-9975-4257-2-8.
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Tendinţe contemporane ale dezvoltării ştiinţei: viziuni ale tinerilor cercetători
Editia 3, T, 2014
Conferința "Tendinţe contemporane ale dezvoltării ştiinţei: viziuni ale tinerilor cercetători"
3, Chișinău, Moldova, 10 martie 2014

Modeling of three-dimensional heat transfer in building envelopes


Pag. 12-12

Kresova Elena, Kundas Semjon
 
International Sakharov Environmental University
 
Disponibil în IBN: 7 februarie 2019



Teza

Nowadays solving of energy efficiency problems is one of the most priority tasks for the Republic of Belarus. At the moment there are houses where we can see in the winter low temperature and houses where we can see high humidity of indoor air. One of the main causes of these phenomena is inconsistency of real rooms heat loss with results of it calculation under design. For solving undermentioned task was implemented LS-DYNA software – a multi-purpose program that uses an explicit statement of finite element method. In this work heat transfer modeling of building envelope was conducted for the energy efficiency house of Educational and Scientific Complex (ESC) «Volma» of International Sakharov Environmental University. A building mixture of clay, water and wood chips will be used for filling walls of house in ESC «Volma». According to its characteristics, the mixture is similar to arbolit with a density of about 500 kg/m3. It was examined a problem of transient heat transfer in a rod using 8-node brick elements. This problem demonstrates using LS-DYNA to solve a transient, 3-dimensional, heat transfer problem with temperature boundary conditions. First of all we determined material properties and initial and boundary conditions of layers which correspond to layers of envelope. Then the contacts between layers were made (surface to surface thermal). Results of first calculation shown, that LS-DYNA software can be applied for this purposes. It was estimated how heat flux and temperature change depending on the time.