Two test houses having ordinary glass and novel glass curtain walls are constructed in Taiwan and experimentally investigated in terms of various performance parameters such as ultraviolet light penetration, thermal insulation, power generation, indoor lighting and energy saving efficiency.
It is also found that the significant influence of the density on the thermal resistance of the lightened concrete, and thus on their thermal insulation power, the denser the material and the lower its thermal resistance.
The early identification and location of high-frequency current pulses related to partial discharges (PDs) in the solid insulation of power transformers enable the optimization and planning of maintenance interventions, preventing unexpected power interruptions and reducing downtime.
Non-uniform voltage distribution under transient voltage is a primary cause of breakdown of the major insulation of power transformers.
This paper presents a novel method for estimating the degradation of solid insulation in power transformers, considering thermal ageing and paper moisture dynamics.
The degradation of cellulose is an important factor in the life of electrical insulation in power transformers and in the longevity of paper archives.
But rock salt used to clear snow and ice can seep into underground utility boxes and wear away the insulation around power lines, leading to the electrification of surrounding metal.
This research presents three principal contributions: a testing methodology considering both AC and DC, important conclusions on an emergent technology for electrical insulation in power systems and a quantitative analysis of erosion in polymeric composites based on the mass loss.
The technologies considered within the scope of this research are mainly renewable and sustainable based solutions such as photovoltaic (PV) modules, solar thermal (T) collectors, hybrid PV/T collectors and systems, phase change material (PCM) and underground based heat storage techniques, energy-efficient heat pumps, alternative facade materials for better thermal insulation and power generation.
This paper is partially supported by the National Natural Science Foundation of China (Grant Nos. 50875132, 60573172), the Beijing Municipal National Science Foundation (Grant Nos. 4162024, KZ201510015014, KZ 04190116009/001, KM201510015009, KM201510015002), and the State Key Laboratory of Electrical Insulation and Power Equipment (No. EIPE15208).
Silicone rubber has been widely used for electrical insulation in several power devices, e.g.: power insulators and metal-oxide surge arresters.
