Experimental Research on Breakdown Characteristics of Transformer Oil at Low Temperature

The most commonly used refrigerants are potent greenhouse gasses that can contribute to climate change. Hydro-Fluoro-Olefins are low Global Warming Potential fluids. A summary of our experimental research activity on the thermodynamic properties of two environmentally friendly Hydro-Fluoro-Olefins, namely R1234yf and R1234ze(E), is reported. In particular, the measurements were performed with an isochoric apparatus and the apparatus specifically built to reach temperatures down to about 100 K. The data elaboration confirms the validity of the choice and that R1234yf and R1234ze(E) can be adopted in many domestic applications. Moreover, considering the reduction of the flammability issues of R1234yf and R1234ze(E), the properties of binary systems containing these fluids and carbon dioxide were analyzed. The presented mixtures could be very interesting for low-temperature applications such as cascade cycles.

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Experimental research on air-gap partial discharge properties in transformer oil-paper insulation

2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena ◽

10.1109/ceidp.2013.6748280 ◽

2013 ◽

Cited By ~ 1

Author(s):

Weigen Chen ◽

Zhenze Long

Keyword(s):

Experimental Research ◽

Partial Discharge ◽

Air Gap ◽

Transformer Oil ◽

Paper Insulation

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Experimental Study on Low Temperature Flotation Recovery of Apatite from a Magnetic Tailings

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.522-524.1501 ◽

2014 ◽

Vol 522-524 ◽

pp. 1501-1504 ◽

Cited By ~ 1

Author(s):

Wei Zhi Wang ◽

Bing Liang ◽

Jin Rui Zhang

Keyword(s):

Experimental Study ◽

Low Temperature ◽

Experimental Research ◽

Test Results ◽

Flotation Recovery ◽

Pulp Temperature ◽

Comprehensive Recovery

An experimental research on comprehensive recovery of associated apatite from certain iron tailings in China was carried out. The phosphorus flotation is realized at low temperature through the application of the new, more efficient AW series collector. The test results showed that the concentrate whose P2O5 grade was 33.50%,recovery was 92.18% was obtained for the tailings whose P2O5 grade was 3.05% by one roughing under the pulp temperature of 15°C, thus realizing an effective recovery of apatite from the tailings.

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Experimental Research on Mixture Distribution of Diesel Premixed Low-Temperature Combustion

10.4271/2015-01-1839 ◽

2015 ◽

Author(s):

Lei Shi ◽

Laitao Zhang ◽

Kangyao Deng ◽

Xingcai Lv ◽

Junhua Fang

Keyword(s):

Low Temperature ◽

Experimental Research ◽

Mixture Distribution ◽

Low Temperature Combustion ◽

Temperature Combustion ◽

Premixed Low Temperature Combustion

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Experimental Study on Spray Materials at Low Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.466-467.93 ◽

2012 ◽

Vol 466-467 ◽

pp. 93-96

Author(s):

Yue Zhong Lin ◽

Yong Qiang Lai ◽

Li Jie Zheng

Keyword(s):

Experimental Study ◽

Low Temperature ◽

Experimental Research ◽

Economic Performance ◽

Polymer Fiber ◽

Spray Process ◽

Cement Retarder ◽

High Crack ◽

High Crack Resistance ◽

Early Strength

According to the low temperature spray process, using double quick cement, retarder, water retaining agent, water reducing agent, polymer, fiber was investigated using orthogonal theory the feasibility of preparation of guniting material. Through the experimental research prepared early strength, high adhesiveness, high crack resistance, high economic performance of gunite material, its each index can meet the requirements of the application.

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Experimental Research on the Performances of Warm Mix Recycled Asphalt Mixture in Road Application

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.4207 ◽

2011 ◽

Vol 243-249 ◽

pp. 4207-4212

Author(s):

Ji Shu Sun ◽

Chun Feng Yang ◽

Zhao Xia Chen ◽

Hui Ran Pi

Keyword(s):

High Temperature ◽

Low Temperature ◽

Experimental Research ◽

Hot Mix Asphalt ◽

Asphalt Mixture ◽

Water Stability ◽

Recycled Asphalt ◽

Pavement Structures

The effect of sasobit’s quantity exerted on the asphalt viscosity was researched firstly in this paper, and the mixing temperature of warm mix recycled Asphalt mixture was determined. Then, the technical performances of warm mix recycled asphalt mixture on high temperature, low temperature and water stability were studied through systematic experiments. And compared the technical indexes with that of hot mix asphalt. The results showed that sasobit could reduce asphalt viscosity significantly, so it could lower the mixing and compaction temperatures of the recycled asphalt mixture. The technical indexes of warm mix recycled asphalt mixture conform to the current specifications, so it can be used in many pavement structures.

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