نتایج جستجو برای: thermal insulation

تعداد نتایج: 223177  

2017
Pengyu Wang Gang Liu Hui Ma Yigang Liu Tao Xu

This paper presents a theoretical and experimental study on the ampacity of the prefabricated straight-through joint of a 110 kV high voltage cable. Thermal modelling revealed that the critical spot limiting the ampacity of this type of cable joint is located on its crosslinked polyethylene (XLPE) insulation section. The axial distribution of the thermal field in this type of cable joint was al...

Journal: :International journal of occupational safety and ergonomics : JOSE 2004
Harriet Meinander Mari Hellsten

One of the objectives of the European SUBZERO project was to study the influence of sweat evaporation and condensation on the heat transmission properties of cold protective clothing. With the sweating thermal manikin Coppelius, water vapour transfer through and water condensation in the clothing can be determined simultaneously with the thermal insulation. In this study, 4 cold protective ense...

Journal: :International journal of occupational safety and ergonomics : JOSE 2008
Randi Eidsmo Reinertsen Hilde Faerevik Kristine Holbø Ragnhild Nesbakken Jarl Reitan Arne Røyset Maria Suong Le Thi

Phase-change materials (PCM) can be used to reduce thermal stress and improve thermal comfort for workers wearing protective clothing. The aim of this study was to investigate the effect of PCM in protective clothing used in simulated work situations. We hypothesized that it would be possible to optimize cooling performance with a design that focuses on careful positioning of PCM, minimizing to...

2016
Haiming Cheng Changqing Hong Xinghong Zhang Huafei Xue Songhe Meng Jiecai Han

The desire for lightweight nanoporous materials with high-performance thermal insulation and efficient anti-ablation resistance for energy conservation and thermal protection/insulation has greatly motivated research and development recently. The main challenge to synthesize such lightweight materials is how to balance the relationship of low thermal conductivity and flame retardancy. Herein, w...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2017
Linda Gulbe Vairis Caune Gundars Korats

The aim of this study is to explore large (60 m/pixel) and small scale (individual building level) temperature distribution patterns from thermal remote sensing data and to conclude what kind of information could be extracted from thermal remote sensing on regular basis. Landsat program provides frequent large scale thermal images useful for analysis of city temperature patterns. During the stu...

Journal: :International journal of ceramic engineering & science 2023

Lanthanum zirconate (LZO) has high-temperature advantages including high melting point, low thermal conductivity and structure stability, which the potential to be used in insulation field. However, mechanical properties of LZO porous ceramics have limited further applications. In this work, nanofibrous membranes were prepared by electrospinning, preparation parameters PVP content, spinning vol...

Journal: :Journal of animal science 1988
J B Robinson B A Young

Metabolic heat production and rectal temperature were measured in 19 newborn calves (41.8 +/- 3.7 kg) during hypothermia and recovery when four different means of assistance were provided. Hypothermia of 30 degrees C rectal temperature was induced by immersion in 18 degrees C water. Calves were rewarmed in a 20 to 25 degree C air environment where thermal assistance was provided by added therma...

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