Thermal conductivity of expanded polystyrene (EPS) at 10°C and its conversion to temperatures within interval from 0 to 50°C

Gnip, Ivan; Vėjelis, Sigitas; Vaitkus, Saulius

doi:10.1016/j.enbuild.2012.05.029

Cited by 78 publications

(37 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e models put to use for the description of the impacts of temperature on thermal conductivity coefficient of inorganic binding materials together with EPS templates were [16,17] λ t � 1.163λ 0°C (1 + 0.0025t),…”

Section: Relationship Between Ermal Conductivity Coefficient and Tempmentioning

confidence: 99%

Heat Transfer Dynamic Analyses for Recycled‐Concrete Wall Combined with Expanded Polystyrene Template

Chen

2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Due to the benefits of pollution reduction, energy saving, and recycling of resources associated with the recycled concrete, together with the apparent thermal storage thermal insulation yield of expandable polystyrene (EPS) template, the heat transfer dynamics of their combination has become a contemporary study topic. In this research work, an investigation of the heat transfer coefficient (U) of EPS template recycled-concrete shear wall has been carried out. Four different concrete mixtures shear wall samples having different insulation types were developed for the purpose of quantifying their thermal outputs. Both temperature (T) and humidity (H) affection to thermal conductivity coefficient (λ) of reinforced concrete and the EPS template were investigated, correspondingly. e λ 0°C (relative variation for a 0°C of temperature variation in T) of cement mortar, recycledconcrete shear wall, and ordinary concrete shear wall were measured being 0.7526, 1.2463, and 1.3750 W·m, respectively. And the λ calculation of EPS was carried out being 0.0396 W·m −1 ·K −1 . A corrected calculation method was put forward to application in practical work that could reflect the real U value in a more precise manner. ese results brought to light the fact that the heat preservation output of recycled-concrete shear wall posed to be comparatively more improved than that of ordinary concrete shear wall. We put forth the suggestion for the use of corrected calculation method in the calculation and analysis of U of EPS template recycled-concrete composite shear wall in the climatic conditions of Beijing. e results revealed the fact that the U of EPS template recycled-concrete shear wall was dominantly controlled by the change of thermal conductivity changes of EPS template. e monthly mean U increased with increasing Tout and decreased with decreasing Tout. e smaller the U of the enclosure wall was, the better the thermal stability of the wall was experienced.

show abstract

Section: Relationship Between Ermal Conductivity Coefficient and Tempmentioning

confidence: 99%

Heat Transfer Dynamic Analyses for Recycled‐Concrete Wall Combined with Expanded Polystyrene Template

Chen

2018

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The thermal conductivity of the insulation materials used for houses has been determined to be, on average, 10°C according to European standards [3]. However, when climatic conditions are taken into consideration, the average temperature interval varies between 0°C and 50°C.…”

Section: Introductionmentioning

confidence: 99%

“…Thermal conductivity of a material changes depending on certain microscopic parameters: cell magnitude, the order of cells, the properties of heat radiation, and the properties of the adhesive material [11]. Also, the behavior of styrene monomer in its solid phase in relation to temperature significantly affects thermal conductivity for the expanded polystyrene material as well as the air in it [3]. The change in the thermal conductivity and the mechanical properties of the materials have been determined according to density and production parameters [12].…”

Section: Introductionmentioning

confidence: 99%

“…The specific method to be used depends on the type of material. In the literature, experimental methods are generally used to determine thermal conductivity for insulation materials [3,6,7,11,13,15], but there are also a limited number of basic studies conducted by looking at the internal structure by using numerical methods as well as experimental methods [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Numerical and Experimental Investigation of the Change of the Thermal Conductivity of Expanded Polystyrene at Different Temperatures and Densities

Doğan¹,

Tan

2019

International Journal of Polymer Science

View full text Add to dashboard Cite

The determination of the thermal conductivity of insulation materials depending on which parameters in the application as well as the production is very important. In this direction, the parameters affecting thermal conductivity should be determined to improve the efficiency of the insulation materials. It is also a fact that expanded polystyrene blocks have different thermal conductivities at the same density value depending on the production process. In this study, it was determined, experimentally and numerically, that the thermal conductivity of expanded polystyrene material at different densities is dependent on which parameters and changes in temperature. Expanded polystyrene materials consist of blocks of 30×30 cm with density of 16, 21, and 25 kg/m3 and a thickness of 20 mm. Thermal conductivity measurements were performed in FOX 314 (Laser Comp., USA) operating in accordance with ISO 8301 and EN 12667 standards. The measurements were made for expanded polystyrene blocks at the average temperatures of 10°C, 20°C, 30°C, and 40°C. The numerical study has three stages as the acquisition of electron microscope images (SEM) of expanded polystyrene blocks, modeling of internal structure geometry with CAD program, and realization of solutions with a finite element-based ANSYS program. Findings from experimental and numerical studies and the parameters affecting thermal conductivity were determined. Finally, it is thought that numerical methods can be used to obtain a preliminary idea for EPS material in determining thermal conductivity by comparing the findings of experimental and numerical studies.

show abstract

“…Based on these normative documents creep deformations of thermal insulation materials do not exceed 2%. In order to limit deformations of thermal insulating materials to 2%, it is important to (Merkel 2002;Gnip et al 2012a) maintain the initial stage of creep deformations by introducing safety factor (coefficient) and ensure the long-term thermal insulation characteristics throughout its operation (protect from moisture, high temperatures, etc. ).…”

Section: Introductionmentioning

confidence: 99%

Prediction of creep strain in mineral wool slabs under compression

Steponaitis

Vėjelis

2014

Proceedings of the International Conference „Innovative Materials, Structures and Technologies”

View full text Add to dashboard Cite

Abstract. In order to successfully use stone wool products as a construction material which is affected by long-term compressive loads, it is not enough to be aware of the strength and deformation characteristics determined under shortterm loads. It is important to know the change in time of deformations (creep deformations) of the products under constant long-term compressive loads, which cause the enlarged deformations of structural elements of the material.The analysis of the change in thickness of stone wool under constant short-term and long-term  

show abstract

Thermal conductivity of expanded polystyrene (EPS) at 10°C and its conversion to temperatures within interval from 0 to 50°C

Cited by 78 publications

References 8 publications

Heat Transfer Dynamic Analyses for Recycled‐Concrete Wall Combined with Expanded Polystyrene Template

Heat Transfer Dynamic Analyses for Recycled‐Concrete Wall Combined with Expanded Polystyrene Template

The Numerical and Experimental Investigation of the Change of the Thermal Conductivity of Expanded Polystyrene at Different Temperatures and Densities

Prediction of creep strain in mineral wool slabs under compression

Contact Info

Product

Resources

About