Experimental Analysis of Transparent Insulation Based on Poly-carbonate Multi-Wall Systems: Thermal and Optical Performance

Čekon, Miroslav; Slávik, Richard; Zach, Jiří

doi:10.1016/j.egypro.2017.09.691

Cited by 7 publications

(8 citation statements)

References 5 publications

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“…Information regarding the materials applied in individual assemblies is obtained from laboratory measurements of purchased samples. More information about the measurements can be found in [34]. All the assemblies share the same base structure made of 480 kg of concrete for the purposes of this study.…”

Section: Input Data Inventorymentioning

confidence: 99%

“…Dynamic modelling was selected as literature such as [36] suggests that it should provide the most accurate data for LCA. This type of modelling considers the thermal and spectral parameters of the evaluated materials that were obtained in the course of research for previous works ( [34,37]) as well as varying exterior conditions. A summary of the material parameters is in Table 4.…”

Section: Calculation Of Energy Consumptionmentioning

confidence: 99%

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Life Cycle Assessment of Solar Façade Concepts Based on Transparent Insulation Materials

Struhala¹,

Čekon²,

Slávik³

2018

Sustainability

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Contemporary architecture and construction industry are trying to cope with increasing requirements concerning energy efficiency and environmental impacts. One of the available options is the active utilization of energy gains from the environment, specifically solar energy gains. These gains can be utilized by, for example, solar walls and facades. The solar façade concept has been under development for more than a century. However, it has not achieved widespread use for various reasons. Rather recently the concept was enhanced by the application of transparent insulation materials that have the potential to increase the efficiency of such façades. The presented study evaluates the environmental efficiency of 10 solar façade assemblies in the mild climate of the Czech Republic, Central Europe. The evaluated façade assemblies combine the principles of a solar wall with transparent insulation based on honeycomb and polycarbonate panels. The study applies Life-Cycle Assessment methodology to the calculation of environmental impacts related to the life cycle of the evaluated assemblies. The results indicate that even though there are several limiting factors, façade assemblies with transparent insulation have lower environmental impacts compared to a reference assembly with standard thermal insulation. The highest achieved difference is approx. 84% (in favor of the assembly with transparent insulation) during a modelled 50-year façade assembly service life.

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Section: Input Data Inventorymentioning

confidence: 99%

Section: Calculation Of Energy Consumptionmentioning

confidence: 99%

Life Cycle Assessment of Solar Façade Concepts Based on Transparent Insulation Materials

Struhala¹,

Čekon²,

Slávik³

2018

Sustainability

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“…The thermal conductance can be determined experimentally, for example, using a hot-plate apparatus. In [14], the effective thermal conductivities of four different polycarbonate TIMs were determined using different mean temperatures and inclination angles (0°, 45°, 90°). An increase in the effective thermal conductivity with increasing mean temperature of the sample was observed, but the influence of the inclination angle on the effective thermal conductivity of the investigated TIMs was negligible.…”

Section: Introductionmentioning

confidence: 99%

“…For the determination of the solar transmittance of TIMs, integrating spheres and spectrophotometers are widely used.Čekon et al [14] measured the spectral solar transmittance of four polycarbonate TIMs using a spectrophotometer and compared it with data derived from outdoor measurements. Platzer [16] used a similar setup to show that the experimentally determined solar transmittance of TIMs can be well reproduced by theoretical models.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Heat Transfer Characteristics of a Newly-Developed Solar Active Thermal Insulation System

et al. 2021

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A newly-developed solar active thermal insulation system (SATIS) is introduced with the main objective to accomplish a highly-dependent total solar transmittance on the irradiation angle. SATIS is also designed to obtain the maximum transmittance at a prescribed design irradiation angle and to reduce it remarkably at higher irradiation angles. A purely mineral thermal insulation plaster with micro hollow glass spheres is applied to manufacture the investigated SATIS prototype. Light-conducting elements (LCEs) have been introduced into SATIS and suitable closing elements have been applied. The SATIS prototype has been investigated both experimentally and numerically. It turned out that the contributions of conduction, radiation and convection to the effective thermal conductivity of SATIS, without the closing elements (49 mWmK), amount to 86.2%, 13.2% and 0.6%, respectively. The angle-dependent short-wave radiation exchange within the LCE has been investigated via ray tracing. At the incidence angle of 19% (design angle), 27% of the radiation within the LCE is absorbed by the absorber plate, resulting in measured and computed total solar energy transmittances of 11.2%/11.7%, respectively. For a typical summer irradiation angle of 60%, 98% of the incident radiation is absorbed by the surfaces at the entrance of the LCE. The corresponding total solar energy transmittance amounts to 2.9%.

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“…Many researchers deal with various wall fragments with advanced material forms and their characteristics, such as decrement factor and time lag [1], reduction of embodied energies and carbon [2], incorporation of transparent thermal insulations [3], vast analysis of thermal bridges in structures [4] and also with green roofs [5]. It is generally known that building envelope is one of the most important elements of the building.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of various experimental wall fragments exposed to real climate conditions – temperature measurement

Jurasova

Juráš

2019

IRASE

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Main aim of this paper is to illustrate the experimental partial results of a study on various exterior wall fragments. The study was performed for selected wall fragments and time periods, with attention focused also on wall orientation (East and South) with identical layering and also on dynamic thermal parameters connected to the thermal comfort during summer and winter. Evaluation is done for real measured climate conditions in the area of experimental laboratory (exterior – University of Zilina) and interior conditions set according to the Slovak standard. For needs of the long-term experiment (since March 2017), temperature and relative humidity between layers are monitored. This paper deals specifically with the temperature measurement of selected days. For future publications also coupled heat-air-moisture transport analysis is intended. In this part of analysis, some extreme boundary conditions were selected and reviewed from the point of view of measured temperature inside the wall. Temperature peaks are characterized with respect to exposure to real atmospheric conditions.

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Experimental Analysis of Transparent Insulation Based on Poly-carbonate Multi-Wall Systems: Thermal and Optical Performance

Cited by 7 publications

References 5 publications

Life Cycle Assessment of Solar Façade Concepts Based on Transparent Insulation Materials

Life Cycle Assessment of Solar Façade Concepts Based on Transparent Insulation Materials

Experimental and Numerical Study on the Heat Transfer Characteristics of a Newly-Developed Solar Active Thermal Insulation System

Behaviour of various experimental wall fragments exposed to real climate conditions – temperature measurement

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