scholarly journals Precise measurement of heat of combustion with a bomb calorimeter

1960 ◽  
Author(s):  
R S Jessup
Keyword(s):  
Precise Measurement ◽  
Heat Of Combustion ◽  
Bomb Calorimeter

Meter for the measurement heat of combustion

2011 ◽  
Vol 2011 (1) ◽  
pp. 000938-000946
Author(s):  
Zbigniew Magonski
Keyword(s):  
Electric Power ◽  
Constant Temperature ◽  
Combustion Zone ◽  
Good Alternative ◽  
Heat Energy ◽  
Heat Of Combustion ◽  
Direct Evaluation ◽  
Bomb Calorimeter ◽  
Time Period ◽  
Power Change

This paper presents a proposal of a thermal instrument intended for the evaluation of heat energy of fluid fuels. Two thermal devices the flowmeter and the combustor are the basic components of the instrument. The meter maintains a constant temperature in the vicinity of the combustion zone. The amount of heat energy in the fuel is calculated as the ratio of the electric power change expressed in Watts to the change of fuel supply delivered to the combustor within a time period of 1sek. The method enables a direct evaluation of fuel energy expressed in Jules per unit of mass or volume. For some applications, the meter may be a good alternative for a bulky bomb calorimeter.

Effects of Heat Treatment on the Properties of Polyurethane/Clay Nanocomposites Paint

2014 ◽  
Vol 525 ◽  
pp. 97-100 ◽  
Author(s):  
Teuku Rihayat ◽  
Salim Suryani ◽  
Zaimahwati Zaimahwati
Keyword(s):  
Heat Treatment ◽  
Thermal Properties ◽  
Thermal Resistance ◽  
Surface Area ◽  
Extrusion Process ◽  
Heat Of Combustion ◽  
Mechanical Resistance ◽  
Clay Nanocomposites ◽  
Bomb Calorimeter

Polyurethane is a very versatile polymer but it has poor thermal resistance and mechanical resistance. Thus, clay was added in the polyurethane and the thermal properties are determined by a bomb calorimeter. There were two type of clay used which are treated clay and untreated clay. Clay (treated and untreated) was added into polyurethane by Thermal Haaka by extrusion process. In the research, treated clay showed according to the references statement. Addition of 5wt% of treated clay reduced 85% of the heat combustion of the polyurethane while for untreated clay the reduced heat combustion is not too significant. This is because the sensitivity of the bomb calorimeter to the surface area that contacted to the ignition wire. Treated clay certainly can reduced the heat of combustion to 85% of polyurethane with additional of 5wt% of treated clay.

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