نتایج جستجو برای: insulation aging

تعداد نتایج: 112677  

2011
MOHAMMED A. ALAM MICHAEL H. AZARIAN MICHAEL OSTERMAN MICHAEL PECHT

This paper presents the application of model-based and data-driven approaches for prognostics of failures in embedded planar capacitors. An embedded planar capacitor is a thin laminate that serves both as a power/ground plane and as a parallel plate capacitor in a multilayered printed wiring board. These capacitors have gained importance with an increase in the operating frequency and a decreas...

2011
Youyuan Wang Stanislaw Grzybowski

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...

Journal: :International journal of occupational safety and ergonomics : JOSE 1999
K Kuklane R Afanasieva O Burmistrova N Bessonova I Holmér

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...

2015
Meral Ozel

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...

Journal: :British journal of industrial medicine 1993
J Clausen B Netterstrøm C Wolff

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...

Journal: :IEEE Access 2023

The demand and necessity of direct current (DC) has been increasing owing to large capacity long distance power transmission. DC application TP (thermal plastic) materials, which can increase the transmission compared existing insulation primary focus studies. This study presents development a highly reliable accelerated aging system that implement conditions cables. Moreover, we verify its rel...

ژورنال: مواد پرانرژی 2015

Thermal insulation materials protects internal surface of the motor casing in contact with the hot produced gases, extreme turbulence flow and high pressure due to combustion propellant. Insulation Materials in the rocket motor covers the inner surface of the motor casing and protect the body against the damage caused by extreme and short-term heat, intense turbulent flow and high pressure. O...

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