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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Sep 2017, 38 (5)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Determination of the energy, mass flow and temperature parameters in combustion systems of agricultural biomass residues


H. Unal1 and A. Kara2

1Department of Biosystems Engineering, Faculty of Agriculture, University of Uludag, Nilufer,Bursa, 16059, Turkey

2Department of Chemistry, Faculty of Arts and Science, University of Uludag, Nilufer, Bursa, 16059, Turkey

*Corresponding Author E-mail:




Key words

Agricultural residues,


Combustion heat,

Corn cob,

Hazelnut shell




Publication Data

Paper received : 10.09.2016 Revised received : 29.05.2017 Accepted : 28.06.2017




Aim: This study was carried out to determine the energy, mass flow and temperature computations of agricultural biomass.


Methodology: The feasibility of the technique which enable to formulate a balanced chemical equation using the parameters of biomass moisture content and excess air utilized in combustion was determined for agricultural biomass residues (corn cob and hazelnut shell). The chimney gas composition was calculated assuming that carbon dioxide and water were completely consumed. The combustion temperature was obtained with an energy balance.


Results: Because of the error value of corn cob was negative, accepted combustion heat of this fuel was determined high (1400K) and concluded. It should have been reduced down to feasible value of this temperature. On the other hand, because of the error value for hazelnut shell was positive, raising the combustion heat is recommended. Feasible combustion heats for corn cob and hazelnut shell were 1389K and 1437K, respectively. While heat of combustion of corn cob in dry basis was 1436K for excess air parameter 1.0, the heat of combustion in 0.5 moisture level was 1132K with 27% reduction. The hazelnut shell combustion heat was also determined as 1205K with about 23% reduction. The net heats of combustion of corn cob and hazelnut shells in wet basis were determined as 13,109 and 15,775 kJ kg-1, respectively.


Interpretation: The biomass moisture, excess air and heat losses from system were in accordance with each other.



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