Sulfur hexafluoride (SF₆) gas decomposition results from the energy produced by partial discharge (PD). The detection of SO₂ and H₂S content, as important characteristic components of the decomposition products, is significant in the determination of the insulation level of SF₆ gas and the inside insulation faults of gas-insulated equipment. A number of gas sensors use carbon nanotubes (CNTs). ...

The overall life of oil-immersed power transformers depends on the long-term life of the oil–paper insulation system throughout continuous operation. Studying the reliability assessment methods for oil–paper insulation can help determine the reliability level of power transformers accurately, and ensure their safe and stable operation. In the present paper, the life of oil–paper insulation is p...

This study compared the methods of determining the footwear insulation on human participants and the thermal foot model. Another purpose was to find the minimal number of measurement points on the human foot that is needed for insulation calculation. Bare foot was tested at 3 ambient temperatures on 6 participants. Three types of footwear were tested on 2 participants. The mean insulation for a...

foam glass is the waste under action of other materials to make a new type mixed material, its itself has good stability, corrosion resistance, heat not combustion, remain normal at high and low temperature, exposed oxidation in air, building indoor outdoor insulation, noise reduction, waterproof moisturizing [1] , etc. In this paper, through classification, performance, use aspects glass, meth...

The aging of oil-paper insulation in power transformers may cause serious power failures. Thus, effective monitoring of the condition of the transformer insulation is the key to prevent major accidents. The purpose of this study was to explore the feasibility of confocal laser Raman spectroscopy (CLRS) for assessing the aging condition of oil-paper insulation. Oil-paper insulation samples were ...

This paper discusses the state of art in application self-healing silicone-based materials for outdoor high-voltage insulation. Both dynamic behavior dimethyl side groups silicone rubber and diffusion a bulk siloxane to maintain low surface energy are respectively reported as intrinsic mechanisms responsible rubber. Localization, temporality, mobility, type synthesis aspects defining efficiency...

In this study, the optimum thickness of thermal insulation used to reduce heat gain and losses in buildings is investigated under dynamic thermal conditions by using the climatic conditions of Elazığ, Turkey. Numerical method based on an implicit finite difference procedure which has been previously validated is used to determine yearly cooling and heating transmission loads, yearly averaged ti...

To evaluate the effects of working with modern insulation materials (rock and glass wool), the members of the Copenhagen Union of Insulation Workers were invited to participate in a study based on a health examination that included lung function tests. Three hundred and forty men (74%) agreed to participate, and 166 bus drivers served as the control group. Age distribution, height, and smoking ...

Air-Conditioning (AC) systems are responsible for a considerable portion of the energy consumption in buildings located in high cooling load requiring regions of Iran. In addition, the heat flow through the buildingschr('39') external walls plays a major role in cooling load estimations for the countrychr('39')s hot regions. Therefore, application of insulation materials in external walls has g...

In this study, based on the shortcomings of previous studies, thermal conductivity and resistance analyzes as well absorptivity thickness parameters fabrics made basalt fiber were evaluated in terms end use according to different application areas such clothing, automotive, insulation, reinforcement filtration. During fabric obtained from rocks Ukraine was subjected several measurement conducti...