COMSOL Multiphysics validation as simulation software for heat transfer calculation in buildings: Building simulation software validation

Gerlich, Vladimir; Sulovská, Kateřina; Zálešák, Martin

doi:10.1016/j.measurement.2013.02.020

Cited by 64 publications

(20 citation statements)

References 8 publications

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“…Several of those already tested by IEA are EnergyPlus, FLUENT, Matlab, TRNSys, GHT and ANSYS Fluent. As you can see in [21] COMSOL Multiphysics was validated at authors department, where simulated data showed agreement with the rest energy simulation software as well as with analytical solution.…”

Section: Numerical Simulationsmentioning

confidence: 75%

Experimental and Numerical Research of the Thermal Properties of a PCM Window Panel

2017

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This paper reports the experimental and simulation analysis of a window system incorporating Phase Change Materials (PCMs). In this study, the latent heat storage material is exploited to increase the thermal mass of the building component. A PCM-filled window can increase the possibilities of storage energy from solar radiation and reduce the heating cooling demand. The presented measurements were performed on a specific window panel that integrates a PCM. The PCM window panel consists of four panes of safety glass with three gaps, of which the first one contains a prismatic glass, the second a krypton gas, and the last one a PCM. New PCM window panel technology uses the placement of the PCM in the whole space of the window cavity. This technology improves the thermal performance and storage mass of the window panel. The results show the incongruent melting of salt hydrates and the high thermal inertia of the PCM window panel. The simulation data showed that the PCM window panel and the double glazing panel markedly reduced the peak temperature on the interior surface, reduced the air temperature inside the room, and also considerably improved the thermal mass of the building. This means that the heat energy entering the building through the panel is reduced by 66% in the summer cycle.

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Section: Numerical Simulationsmentioning

confidence: 75%

Experimental and Numerical Research of the Thermal Properties of a PCM Window Panel

2017

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“…In the software model, temperature contours show all the areas with the same unique temperature compared to their surrounding area [22]. Since our heating process in the experimental test was not uniform, the heated areas are different in the software results from the actual experimental results especially on the deeper defected area.…”

Section: Modeling the Ir Testmentioning

confidence: 99%

Concrete Pavement Service Condition Assessment Using Infrared Thermography

Golrokh

Islam

2017

Advances in Materials Science and Engineering

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Infrared thermography (IRT), an effective nondestructive testing method, is used to obtain an initial evaluation of the concrete pavement surface and near surface in a time effective manner. In this paper, the effect of the depth of delamination inside concrete pavement on infrared thermography technique is studied for bridge decks inspection. To be able to mimic the delamination in subsurface, two Styrofoam cubes have been inserted in different depth near the surface of the concrete cylinder. After heating up the specimen, thermal images were taken from the surface using an infrared thermal camera to evaluate the effect of subsurface defects on detection sensitivity and accuracy. We also investigated the precision to which the shape and the size of the subsurface anomalies can be perceived using an uncooled thermal camera. To achieve this goal, we used image processing technique to accurately compute the size of delamination in order to compare it with the actual size. In addition, distance/thermal graph is used to detect the presence of the defect underneath the concrete surface. Furthermore, thermal transfer modeling was adopted in this paper to assist the setup of this experiment and the results are compared with laboratory findings.

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“…The validation of COMSOL's heat transfer modules is documented in different studies. [15][16][17] A typical COMSOL simulation comprises of choosing the physics and solver type, defining geometry and materials, applying appropriate boundary conditions and meshes.…”

Section: Computational Proceduresmentioning

confidence: 99%

Thermal depth profiling of materials for defect detection using hot disk technique

et al. 2016

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A novel application of the hot disk transient plane source technique is described. The new application yields the thermal conductivity of materials as a function of the thermal penetration depth which opens up opportunities in nondestructive testing of inhomogeneous materials. The system uses the hot disk sensor placed on the material surface to create a time varying temperature field. The thermal conductivity is then deduced from temperature evolution of the sensor, whereas the probing depth (the distance the heat front advanced away from the source) is related to the product of measurement time and thermal diffusivity. The presence of inhomogeneity in the structure is manifested in thermal conductivity versus probing depth plot. Such a plot for homogeneous materials provides fairly constant value. The deviation from the homogeneous curve caused by defects in the structure is used for inhomogeneity detection. The size and location of the defect in the structure determines the sensitivity and possibility of detection. In addition, a complementary finite element numerical simulation through COMSOL Multiphysics is employed to solve the heat transfer equation. Temperature field profile of a model material is obtained from these simulations. The average rise in temperature of the heat source is calculated and used to demonstrate the effect of the presence of inhomogeneity in the system.

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COMSOL Multiphysics validation as simulation software for heat transfer calculation in buildings: Building simulation software validation

Abstract: Abstract* gerlich@fai.utb.cz, tel.: +420 57 603 3012The main purpose of this article is a presentation of software validation for a calculation of heat transfer in Greek symbolsDensity (kg/m 3 )

Cited by 64 publications

References 8 publications

Experimental and Numerical Research of the Thermal Properties of a PCM Window Panel

Experimental and Numerical Research of the Thermal Properties of a PCM Window Panel

Concrete Pavement Service Condition Assessment Using Infrared Thermography

Thermal depth profiling of materials for defect detection using hot disk technique

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