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Mostrando ítems 1-10 de 2021
Análise comparativa entre isoladores elétricos vítreos, cerâmicos e poliméricos em linhas de transmissão de energia elétrica
(BrasilUFSMCentro de Tecnologia, 2022-08-25)
In the vast majority of cases, when consumers think of an electrical power system, the importance that electrical insulators play in the process of transmission and distribution of energy is
often overlooked. However, ...
Thermal insulation of roofs by using multiple air gaps separated by insulating layers of low infrared emissivity
(Elsevier, 2020-01)
In recent work we have demonstrated the ability of a new thermal insulation design based on creating air cavities between parallel layers of insulation material with a low infrared emissivity (Expanded Polystyrene, 0.6) ...
Grapevine shoots for improving thermal properties of structural fired clay bricks: New method of agricultural-waste valorization
(American Society of Civil Engineers (ASCE), 2017)
Modelling of the influence of the layer pollution thickness in high voltage polluted insulators
(1995-12-01)
An experimental model and a mathematical model with the introduction of a ramp in the channel of Obenaus model are presented. The aim is to present a better reproduction of the real layer pollution deposited on the HV ...
Modelling of the influence of the layer pollution thickness in high voltage polluted insulators
(1995-12-01)
An experimental model and a mathematical model with the introduction of a ramp in the channel of Obenaus model are presented. The aim is to present a better reproduction of the real layer pollution deposited on the HV ...
Estudo da aplicação de isoladores elétricos em linhas de transmissão e subestações de acordo com o grau de poluição do ambiente
(Universidade Tecnológica Federal do ParanáCuritibaBrasilAutomação IndustrialUTFPR, 2020-02-21)
This paper aims to present the different types of electrical insulators available on the market for use in high voltage electrical systems and to characterize by the dielectric materials with which they are manufactured, ...
Thermal insulators with multiple air gaps: Performance, cost and embodied impacts
(Elsevier, 2017-07)
The aim of this work is to demonstrate the potential thermal, environmental and cost advantages of a thermal insulation, which consists on several air chambers between layers of an insulation material with low infrared ...
Estudo do comportamento da resistência de isolamento em transformadores a óleo de 15MVA – 72,5/15kV
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilTecnologia em Automação IndustrialUTFPR, 2014-05-05)
This work will present an applied study of solid insulation in oil transformers and its agents of the insulating mass being the electrical distances between the differences in constructive potential, the insulating paper, ...