Airblast Atomization of Alternative Liquid Petroleum Fuels under High Pressure Conditions

1981 ◽  
Vol 103 (3) ◽  
pp. 514-518 ◽  
Author(s):  
A. K. Jasuja
Keyword(s):  
Fuel Oil ◽  
Gas Oil ◽  
Sauter Mean Diameter ◽  
Turbine Engine ◽  
Residual Fuel Oil ◽  
Wide Range ◽  
The Mean ◽  
Petroleum Fuels ◽  
Correlating Equation ◽  
Light Scattering Technique

A study has been conducted of the effects that fuel and air properties have upon the mean droplet size characteristics of a pre-filming airblast atomizer of the type commonly employed in the gas turbine engine. The fuels tested included kerosine, gas oil and two blends of gas oil in residual fuel oil. The tests were carried out over a wide range of air pressures (about 1 to 13 atmospheres), fuel viscosities (about 0.001 to 0.037 Ns/m2) and the spray mean drop sizes were measured using a laser light-scattering technique. The experimental data accumulated in the study is presented in the paper and it is concluded that the spray Sauter Mean Diameter performance of the atomizer studied can be predicted to a reasonable degree of accuracy, over the range of conditions studied, by a relatively simple correlating equation.

scholarly journals Plain-Jet Airblast Atomization of Alternative Liquid Petroleum Fuels Under High Ambient Air Pressure Conditions

1982 ◽  
Author(s):  
A. K. Jasuja
Keyword(s):  
Ambient Air ◽  
High Viscosity ◽  
Fuel Oil ◽  
Similar Data ◽  
Gas Oil ◽  
Turbine Engine ◽  
Residual Fuel Oil ◽  
Wide Range ◽  
Petroleum Fuels ◽  
Light Scattering Technique

An investigation has been conducted of the effects that air and fuel properties have upon the spray mean dropsize characteristics of a plain-jet airblast atomizer of the type employed in the gas turbine engine. The fuels tested included kerosine, gas oil and a high-viscosity blend of gas oil in residual fuel oil. The tests covered a wide range of ambient air pressures. Well established laser light-scattering technique was employed for dropsize measurements. The experimental data collected in the present investigation are presented in this paper and comparisons are made against similar data relating to the pre-filming type of airblast atomizer, collected in an earlier study (2).

Atomization of Crude and Residual Fuel Oils

1979 ◽  
Vol 101 (2) ◽  
pp. 250-258 ◽  
Author(s):  
A. K. Jasuja
Keyword(s):  
High Viscosity ◽  
Fuel Oil ◽  
Turbine Engine ◽  
Residual Fuel Oil ◽  
Fuel Oils ◽  
Data Points ◽  
The Mean ◽  
The Difference ◽  
The Many ◽  
Pressure Swirl

A study is made of the effects that fuel properties have upon the mean droplet size characteristics of three fuel atomizer types that are commonly employed in the gas turbine engine. The fuels tested included kerosine, gas oil, and a heavy residual fuel oil, and each was passed through a pressure swirl jet, a prefilming airblast, and a plain-jet airblast atomizer in turn. Tests were carried out at pressure levels close to ambient and mean drop sizes were determined using a light-scattering technique. Two main points emerge from the results: Firstly, for all atomizers tested, that the existing dropsize correlations are not sufficiently accurate for use with the high-viscosity residual fuel oils. Secondly, that the fuel dropsize decreases with the change in atomizer type from plain-jet airblast to prefilming airblast. The difference in performance of the two types of airblast atomizers is most noticeable for the residual fuel oil, particularly so at pressure drop levels of less than around five percent. Use is also made of the many data points collected to derive improved dropsize correlations which may be used over the whole range of fuels tested.

Assessing fuel spill risks in polar waters: Temporal dynamics and behaviour of hydrocarbons from Antarctic diesel, marine gas oil and residual fuel oil

2016 ◽  
Vol 110 (1) ◽  
pp. 343-353 ◽  
Author(s):  
Kathryn E. Brown ◽  
Catherine K. King ◽  
Konstantinos Kotzakoulakis ◽  
Simon C. George ◽  
Peter L. Harrison
Keyword(s):  
Temporal Dynamics ◽  
Fuel Oil ◽  
Gas Oil ◽  
Residual Fuel Oil

scholarly journals Combustor Liner Temperature in the Gas Turbine Using Heavy Fuels

1982 ◽  
Author(s):  
Y. S. H. Najjar
Keyword(s):  
Gas Turbine ◽  
Temperature Measurements ◽  
Fuel Oil ◽  
Aviation Fuel ◽  
Gas Oil ◽  
Residual Fuel Oil ◽  
Temperature Parameter ◽  
Heavy Fuels ◽  
Combustor Liner

Broadening of aviation fuel specifications has been simulated with blends of gas oil and residual fuel oil. Radiation, smoke and temperature measurements in a developed experimental combustor at various air pressures, inlet temperatures and air-fuel ratios permit derivation of a non-dimensional temperature parameter showing good correlation with theory.

scholarly journals Effect of blending biodiesel produced from waste cooking oil on the properties of residual fuel oil: energy saving and the economic cost

RSC Advances ◽  
2021 ◽  
Vol 11 (52) ◽  
pp. 33017-33026
Author(s):  
Mahmoud Abd El-Aziz Mohamed ◽  
Mostafa A. A. Mahmoud ◽  
H. A. El Nagy
Keyword(s):  
Energy Saving ◽  
Low Cost ◽  
Economic Cost ◽  
Waste Cooking Oil ◽  
Fuel Oil ◽  
Cooking Oil ◽  
Residual Fuel Oil ◽  
Wide Range

The mazout properties were improved using ecofriendly ways because of its wide range of applications, abundance and low cost.

Radiation and Smoke From the Gas Turbine Combustor Using Heavy Fuels

1983 ◽  
Vol 105 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Y. S. H. Najjar ◽  
E. M. Goodger
Keyword(s):  
Gas Turbine ◽  
Hydrogen Content ◽  
Temperature Measurements ◽  
Fuel Oil ◽  
Aviation Fuel ◽  
Soot Concentration ◽  
Gas Oil ◽  
Gas Turbine Combustor ◽  
Residual Fuel Oil ◽  
Rate Of Increase

Broadening of aviation fuel specifications has been simulated using blends of gas oil and residual fuel oil. Radiation, smoke, and temperature measurements in an experimental combustor at various air pressure, inlet temperture, and air/fuel ratios showed a diminishing rate of increase of radiation with soot concentration and reduced sensitivity of smoke to fuel hydrogen content at higher combustor pressures.

scholarly journals Influences of Blending Fraction in Residual Fuel Oil on Its Ignition Quality - Effects of Low-Boiling Fraction; Light Gas Oil and Light Cycle Oil

2013 ◽  
Vol 48 (6) ◽  
pp. 832-838
Author(s):  
Chiori Takahashi ◽  
Shoko Imai ◽  
Yoshitaka Yamaguchi ◽  
Yuta Mitsui ◽  
Toshiaki Hayashi
Keyword(s):  
Fuel Oil ◽  
Light Cycle ◽  
Gas Oil ◽  
Light Cycle Oil ◽  
Residual Fuel Oil ◽  
Light Gas Oil ◽  
Ignition Quality ◽  
Cycle Oil

Reasons for low heavy vacuum gas oil yield in vacuum distillation of residual fuel oil

2009 ◽  
Vol 45 (3) ◽  
pp. 164-169
Author(s):  
V. Georgiev ◽  
D. Stratiev ◽  
K. Kirilov ◽  
K. Petkov ◽  
D. Minkov
Keyword(s):  
Vacuum Distillation ◽  
Fuel Oil ◽  
Oil Yield ◽  
Vacuum Gas Oil ◽  
Gas Oil ◽  
Residual Fuel Oil ◽  
Heavy Vacuum Gas Oil

A Comparison of Physiological Demand between Self-Propelled and Motorized Treadmill Exercise

2018 ◽  
Vol 7 (4) ◽  
pp. 13-21
Author(s):  
Todd Backes ◽  
Charlene Takacs
Keyword(s):  
Respiratory Exchange Ratio ◽  
Treadmill Exercise ◽  
Cardiopulmonary Exercise Testing ◽  
Mean Value ◽  
The Self ◽  
Mixing Chamber ◽  
Wide Range ◽  
The Subject ◽  
The Mean ◽  
Computer Controlled

There are a wide range of options for individuals to choose from in order to engage in aerobic exercise; from outdoor running to computer controlled and self-propelled treadmills. Recently, self-propelled treadmills have increased in popularity and provide an alternative to a motorized treadmill. Twenty subjects (10 men, 10 women) ranging in age from 19-23 with a mean of 20.4 ± 0.8 SD were participants in this study. The subjects visited the laboratory on three occasions. The purpose of the first visit was to familiarize the subject with the self-propelled treadmill (Woodway Curve 3.0). The second visit, subjects were instructed to run on the self-propelled treadmill for 3km at a self-determined pace. Speed data were collected directly from the self-propelled treadmill. The third visit used speed data collected during the self-propelled treadmill run to create an identically paced 3km run for the subjects to perform on a motorized treadmill (COSMED T150). During both the second and third visit, oxygen consumption (VO2) and respiratory exchange ratio (R) data were collected with COSMED’s Quark cardiopulmonary exercise testing (CPET) metabolic mixing chamber system. The VO2 mean value for the self-propelled treadmill (44.90 ± 1.65 SE ml/kg/min) was significantly greater than the motorized treadmill (34.38 ± 1.39 SE ml/kg/min). The mean R value for the self-propelled treadmill (0.91 ± 0.01 SE) was significantly greater than the motorized treadmill (0.86 ± 0.01 SE). Our study demonstrated that a 3km run on a self-propelled treadmill does elicit a greater physiological response than a 3km run at on a standard motorized treadmill. Self-propelled treadmills provide a mode of exercise that offers increased training loads and should be considered as an alternative to motorized treadmills.

The way of value of Correlation of genomic DNA microsatellite loci and live weight of Chukchi reindeer

2020 ◽  
pp. 27-32
Author(s):  
V. Dodokhov ◽  
N. Pavlova ◽  
T. Rumyantseva ◽  
L. Kalashnikova
Keyword(s):  
Microsatellite Markers ◽  
Agricultural Production ◽  
Live Weight ◽  
Biodiversity Loss ◽  
Tribal Community ◽  
High Germination ◽  
Wide Range ◽  
The Mean ◽  
High Level ◽  
Dna Microsatellite

The article presents the genetic characteristic of the Chukchi reindeer breed. The object of the study was of the Chukchi reindeer. In recent years, the number of reindeer of the Chukchi breed has declined sharply. Reduced reindeer numbers could lead to biodiversity loss. The Chukchi breed of deer has good meat qualities, has high germination viability and is adapted in adverse tundra conditions of Yakutia. Herding of the Chukchi breed of deer in Yakutia are engaged only in the Nizhnekolymsky district. There are four generic communities and the largest of which is the agricultural production cooperative of nomadic tribal community «Turvaurgin», which was chosen to assess the genetic processes of breed using microsatellite markers: Rt6, BMS1788, Rt 30, Rt1, Rt9, FCB193, Rt7, BMS745, C 143, Rt24, OheQ, C217, C32, NVHRT16, T40, C276. It was found that microsatellite markers have a wide range of alleles and generally have a high informative value for identifying of genetic differences between animals and groups of animal. The number of identified alleles is one of the indicators of the genetic diversity of the population. The total number of detected alleles was 127. The Chukchi breed of deer is characterized by a high level of heterozygosity, and the random crossing system prevails over inbreeding in the population. On average, there were 7.9 alleles (Na) per locus, and the mean number of effective alleles (Ne) was 4.1. The index of fixation averaged 0.001. The polymorphism index (PIC) ranged from 0.217 to 0.946, with an average of 0.695.

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