Characterization of waste. Determination of gross calorific value and calculation of net calorific value

2015 ◽  
Keyword(s):  
Calorific Value ◽  
Gross Calorific Value

Determination of gross calorific value in crude oil by variable selection methods applied to 13C NMR spectroscopy

Fuel ◽  
2021 ◽  
pp. 122527
Author(s):  
Ellisson H. de Paulo ◽  
Francine D. dos Santos ◽  
Gabriely S. Folli ◽  
Layla P. Santos ◽  
Márcia H.C. Nascimento ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Variable Selection ◽  
Crude Oil ◽  
13C Nmr ◽  
Calorific Value ◽  
13C Nmr Spectroscopy ◽  
Selection Methods ◽  
Gross Calorific Value

scholarly journals Characterization of Pinus spp needles and evaluation of their potential use for energy

CERNE ◽  
2014 ◽  
Vol 20 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Graciela Inés Bolzon de Muñiz ◽  
Elaine Cristina Lengowski ◽  
Silvana Nisgoski ◽  
Washington Luis Esteves de Magalhães ◽  
Valcineide Tanobe de Oliveira ◽  
...  
Keyword(s):  
Calorific Value ◽  
High Energy ◽  
Ash Content ◽  
Forest Residues ◽  
Gross Calorific Value ◽  
Energy Potential ◽  
New Energy ◽  
Pinus Spp ◽  
Potential Use

The demand for new energy sources is growing and awakening interest in the use of forest residues. Charcoal was prepared at carbonization temperatures of 500 ºC, 600 °C and 700 °C in order to evaluate the potential use of Pinus sp needles for energy. The anatomical and chemical characteristics of the needles and the charcoal produced were also evaluated. The needles were found to have ash content of 2.32% and gross calorific value of 20.30 MJ/kg. The calorific value increased by 45%, reaching 29.64 MJ/kg, after carbonization carried out at 600 ºC. This value is higher than that for charcoal made from eucalyptus (19.25 MJ/kg) and even coconut husks (23.55 MJ/kg), showing the high energy potential of these needles.

Determination of Uncertainty in Gross Calorific Value of Coal Using Bomb Calorimeter

2011 ◽  
Vol 1 (4) ◽  
pp. 45-52 ◽  
Author(s):  
N.K. Mandavgade ◽  
S.B. Jaju ◽  
R.R. Lakhe
Keyword(s):  
Calorific Value ◽  
Volatile Matter ◽  
Individual Factors ◽  
Uncertainty Of Measurement ◽  
Manufacturing Companies ◽  
Maturity Level ◽  
Gross Calorific Value ◽  
Bomb Calorimeter

A bomb calorimeter is an apparatus used for measuring the performance of coal in term of heat of combustion. Recent awareness has been created regarding uncertainty of measurement, due to mainly two reasons. Laboratory accreditation, which has steadily been on the rise, which requires a estimation of uncertainty of measurement particularly in the field of calibration. Second, increased maturity level of the quality system certification as the manufacturing companies looking at the reliability of measurement through correct calibration of inspection, measuring and test equipment. The quality of coal is decided by the various parameters such as ash content, air dried moisture, volatile matter, gross calorific value and sulphur content etc. The grade of coal is decided by the quality of coal which decides the performance of generation of electricity. The uncertainty of measurement in bomb calorimeter gets affected by various parameters. This paper describes the methodology, uncertainty calculations and effects of individual factors on it.

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