scholarly journals Combustion Air Humidtiy Controller for Calorific Value Determination of Fuel Gas

1970 ◽  
Vol 49 (2) ◽  
pp. 98-102
Author(s):  
Shuichiro Higuchi
Keyword(s):  
Calorific Value ◽  
Fuel Gas ◽  
Value Determination

scholarly journals CALORIFIC VALUE DETERMINATION OF SOLID BIOMASS FUEL BY SIMPLIFIED METHOD

2009 ◽  
Vol 40 (3) ◽  
pp. 1 ◽  
Author(s):  
Giuseppe Toscano ◽  
Ester Foppa Pedretti
Keyword(s):  
Statistical Processing ◽  
Calorific Value ◽  
Physical Parameters ◽  
Gross Calorific Value ◽  
Method Of Measurement ◽  
Value Determination ◽  
Solid Biomass Fuel ◽  
Solid Biomass ◽  
Fundamental Physical

The gross calorific value (GCV) and, in particular, the net calorific value (NCV) are fundamental physical parameters in the use of energetic biomass. The method of measurement and the calculation of the GCV, defined by CEN/TS 14918, is rather complex and, in many cases, has a time and cost importance. In literature there are some studies in which the empirical correlations between GCV and the element composition have been calculated. In these contribution some of the most significant correlations in literature are tested and compared to others obtained from statistical processing of data from analysis on 200 samples of biomass carried out in the laboratory and with standard CEN methods. The study shows how the very simplified correlations based on the calculation of carbon and hydrogen content have performances that are similar to those of more complex ones based on the greater number of parameters. In particular, the empirical correlation (GCV = 297.6 + 389.7C) produced from this work has errors that are comparable to those of the better correlation highlighted by literature (GCV = 5.22C2-319C - 1647H + 38.6C·H + 133N + 21028).

scholarly journals INFLUENCE OF STEAM EXPLOSION ON MATERIAL PROPERTIES UNDER PRESSURE AGGLOMERATION

2018 ◽  
Author(s):  
Adam ŚWIĘTOCHOWSKI ◽  
Jakub GAWRON ◽  
Magdalena DĄBROWSKA ◽  
Aleksander LISOWSKI
Keyword(s):  
Material Properties ◽  
Steam Explosion ◽  
Calorific Value ◽  
Wood Chips ◽  
Chemical Characteristics ◽  
Combustion Heat ◽  
Before And After ◽  
Value Determination ◽  
Physical And Chemical

The purpose of the study was to determine the influence of the steam explosion process on the change in properties of the material subjected to this process. Wood chips were used before and after the steam explosion (SE), and pellets made from wood chips subjected to steam explosions (black pellet). The scope of the study included determination of physical and chemical characteristics such as moisture content, combustion heat and calorific value, determination of lignin and hemicellulose, cellulose and hydrogen, carbon, nitrogen and sulfur content. hemicellulose compounds. After the process biomass, there are still mainly cellulose and lignin compounds that are readily biodegradable. The process results in a slight increase in material humidity and lower calorific value, but further processing in the form of agglomeration results in reversal of these effects.

Energetic properties of peat saturated with petroleum products

2020 ◽  
Vol 13 (2) ◽  
pp. 105-109
Author(s):  
E. S. Dremicheva
Keyword(s):  
Crude Oil ◽  
Diesel Fuel ◽  
Energy Use ◽  
Experimental Studies ◽  
Calorific Value ◽  
Petroleum Products ◽  
Ash Content ◽  
Motor Oil ◽  
Initial Sample

This paper presents a method of sorption using peat for elimination of emergency spills of crude oil and petroleum products and the possibility of energy use of oil-saturated peat. The results of assessment of the sorbent capacity of peat are presented, with waste motor oil and diesel fuel chosen as petroleum products. Natural peat has been found to possess sorption properties in relation to petroleum products. The sorbent capacity of peat can be observed from the first minutes of contact with motor oil and diesel fuel, and significantly depends on their viscosity. For the evaluation of thermal properties of peat saturated with petroleum products, experimental studies have been conducted on determination of moisture and ash content of as-fired fuel. It is shown that adsorbed oil increases the moisture and ash content of peat in comparison with the initial sample. Therefore, when intended for energy use, peat saturated with petroleum products is to be subjected to additional drying. Simulation of net calorific value has been performed based on the calorific values of peat and petroleum products with different ratios of petroleum product content in peat and for a saturated peat sample. The obtained results are compared with those of experiments conducted in a calorimetric bomb and recalculated for net calorific value. A satisfactory discrepancy is obtained, which amounts to about 12%. Options have been considered providing for combustion of saturated peat as fuel (burnt per se and combined with a solid fuel) and processing it to produce liquid, gaseous and solid fuels. Peat can be used to solve environmental problems of elimination of emergency spills of crude oil and petroleum products and as an additional resource in solving the problem of finding affordable energy.

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