Laser interferometric study of the physical properties of transformer oil

2012 ◽  
Vol 44 (1) ◽  
pp. 233-238
Author(s):  
H. El-kashef ◽  
O. El Shanwany
Keyword(s):  
Physical Properties ◽  
Transformer Oil ◽  
Interferometric Study ◽  
Laser Interferometric

A laser interferometric study of the diffusion of O2, N2, H2, and Ar into water

1977 ◽  
Vol 55 (8) ◽  
pp. 1415-1421 ◽  
Author(s):  
Robert Neville O'Brien ◽  
William Frank Hyslop
Keyword(s):  
Surface Resistance ◽  
Diffusion Constants ◽  
Interferometric Study ◽  
Laser Interferometric

The diffusion constants of O2, N2, H2, and Ar at 24 °C in H2O are calculated from interferometric data. The question of surface resistance to diffusion of O2 into water is discussed. There appears to be no such resistance.

A laser interferometric study of chlorine evolution from concentrated NaCl solutions

1986 ◽  
Vol 31 (12) ◽  
pp. 1675-1677 ◽  
Author(s):  
R.N. O'Brien ◽  
W. Michalik ◽  
S. Visaisouk
Keyword(s):  
Chlorine Evolution ◽  
Interferometric Study ◽  
Laser Interferometric

A laser interferometric study of sessile drop shape and contact angle

1985 ◽  
Vol 63 (8) ◽  
pp. 2339-2340 ◽  
Author(s):  
R. N. O'brien ◽  
Paul Saville
Keyword(s):  
Contact Angle ◽  
Sessile Drop ◽  
Contact Angles ◽  
Glass System ◽  
Drop Shape ◽  
Measured Angle ◽  
Interferometric Study ◽  
Laser Interferometric ◽  
Equal Thickness

Small contact angles, such as water on glass, have been shown to be measurable interferometrically using fringes of equal thickness after the fashion of Newton's rings. The measured angle for the water on glass system was 0.049 ± 0.006 degrees of arc.

A Laser Interferometric Study of Corrosion of Coated and Uncoated Metals I. — Technique Standardization with the Zn/ZnSO4/Zn System

CORROSION ◽  
1978 ◽  
Vol 34 (8) ◽  
pp. 262-268 ◽  
Author(s):  
R. N. O'BRIEN ◽  
H. KOLNY
Keyword(s):  
Corrosion Protection ◽  
Electrochemical Potential ◽  
Interferometric Method ◽  
Epoxy Primer ◽  
Interferometric Study ◽  
Laser Interferometric ◽  
True Values ◽  
General Range

Abstract A laser interferometric method of detecting holidays in and evaluating the corrosion protection of epoxy primer or other coatings was tested in the well known system Zn/ZnSO4/Zn. An electrochemical potential in the general range of corrosion couple values was applied, first to uncoated electrodes, then to coated anodes with measured, prepared holidays. The method is shown to give easily interpretable, visually obvious qualitative results. General methods of calculating good relative values and less accurate true values of corrosion currents are evolved.

Thermo-physical properties of naphthenic-palm oil methyl ester (POME) blended transformer oil

2021 ◽  
Author(s):  
Rashmi Walvekar ◽  
Danial Aminin Zairin ◽  
Mohammad Khalid ◽  
Nabisab Mujawar Mubarak ◽  
Gupta TCSM
Keyword(s):  
Methyl Ester ◽  
Physical Properties ◽  
Palm Oil ◽  
Transformer Oil ◽  
Thermo Physical Properties

scholarly journals Pengujian Sifat Fisika dan Listrik Minyak Kelapa Sebagai Alternatif Isolasi Pada Trafo Daya

2021 ◽  
pp. 174-185
Author(s):  
Ni Made Seniari ◽  
Sumawarti Sumawarti ◽  
IK Wiryajati ◽  
Supriyatna Supriyatna ◽  
I.A.Sri Adnyani ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Physical Properties ◽  
Power Transformer ◽  
Coconut Oil ◽  
Dielectric Strength ◽  
Transformer Oil ◽  
Added Value ◽  
Insulation Material ◽  
Test Results ◽  
Renewable Materials

Transformer oil insulation material is the result of processes from petroleum, the material that is not able to be renewed, increasingly scarce, expensive, an imported commodity, and the need is increasing. So it is necessary to strive for alternative transformer oil that comes from renewable materials, based on domestic production, increases the added value of a commodity and environmentally friendly. The alternative transformer oil in this case is coconut oil. For this reason, it is necessary to test the feasibility of coconut oil as an alternative to transformer oil which includes testing of physical, chemical and electrical properties. The test results are compared with the standard transformer oil according to the IEC. The test results, the flashpoint and dielectric strength are feasible as an alternative to transformer oil, the density, volume expansion coefficient and viscosity of coconut oil are not suitable for use as an alternative to power transformer insulation oil. The percentage in terms of physical properties is 25%, with 4 tests of 10 existing physical properties. The feasibility of electrical properties is 50% with 1 test of 2 existing electrical properties.

Measurement of the physical properties of cyclohexane using a laser interferometric technique

1996 ◽  
Vol 5 (4) ◽  
pp. 327-332 ◽  
Author(s):  
G.E. Hassan ◽  
H. El-Kashef ◽  
B.Y. El-Baradie ◽  
M. El-Labban
Keyword(s):  
Physical Properties ◽  
Interferometric Technique ◽  
Laser Interferometric
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