An experimental investigation into the characteristics and deposition mechanism of high-viscosity coal ash

Fuel ◽  
2014 ◽  
Vol 119 ◽  
pp. 14-20 ◽  
Author(s):  
Chao Luan ◽  
Changfu You ◽  
Dongke Zhang
Keyword(s):  
Experimental Investigation ◽  
Coal Ash ◽  
High Viscosity ◽  
Deposition Mechanism

An Experimental Investigation of the Torque Efficiency in Small Supr Gears

2015 ◽  
Vol 642 ◽  
pp. 292-297
Author(s):  
Jian Shing Lee ◽  
Jeng Haur Horng ◽  
Ming Yuan Chiu
Keyword(s):  
Experimental Investigation ◽  
Film Thickness ◽  
Power Loss ◽  
Applied Load ◽  
Opposite Effect ◽  
High Viscosity ◽  
Oil Viscosity ◽  
Limited Effect ◽  
Gear Transmission System ◽  
High Viscosity Oil

In present study, a gear transmission system was used to evaluate the effects of oil viscosity, speed, oil temperature as well as the applied load on torque efficiency. The experimental results reveal that the efficiency is increased with the increasing oil temperature and/or applied load whether the multigrade or singlegrade oil was employed. Under a constant torgue, the power loss is increased with the increasing pitch line velocity. The above characteristic resulting from the use of high-viscosity oil yields the substantial variations. However, as the oil film thickness is quite small, the viscosity speed, oil temperature and applied load produces the limited effect on torque efficiency, It indicate that EP additives create an opposite effect on torque efficiency at poor lubrication.

Experimental investigation of asphaltene deposition mechanism during oil flow in core samples

2007 ◽  
Vol 57 (3-4) ◽  
pp. 281-293 ◽  
Author(s):  
N.I. Papadimitriou ◽  
G.E. Romanos ◽  
G.Ch. Charalambopoulou ◽  
M.E. Kainourgiakis ◽  
F.K. Katsaros ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Deposition Mechanism ◽  
Core Samples ◽  
Asphaltene Deposition ◽  
Oil Flow

High Strength Concrete Orthogonal Test of Employing Twin Admixture Technique of Grade II Fly Ash and S95 GGBS

2013 ◽  
Vol 357-360 ◽  
pp. 1455-1458
Author(s):  
Xiang Jun Dong ◽  
Xin Liu ◽  
Rui Jiang
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Fly Ash ◽  
High Strength Concrete ◽  
Coal Ash ◽  
High Strength ◽  
Orthogonal Test ◽  
Reducing Agent ◽  
Strength Concrete ◽  
Grade Ii

This paper focuses on experimental investigation to produce high strength concrete by employing twin admixture technique of grade II fly ash and S95 GGBS. Different regions have different characteristic of the material, so the strength of high strength concrete would be influenced. At present most of the domestic studies about high strength concrete use the first class powered coal ash and rarely grade II fly. In this study, grade II fly ash is chosen. The dosage of grade II fly ash, S95 GGBS and the water reducing agent are given as the influencing factors of high-strength concretes compressive strength and collapsed slump, and determined the optimum mix amount of the components. The data of strength about the age of 3 day, 7 day and 28 day are analyzed. The results are showed the optimum content of grade II fly ash is between 15% and 20%, S95 GGBS is 15% and water reducing agent is 2%.

Sign in / Sign up

Export Citation Format

Share Document