Oxy-fuel combustion power plants use pulverized coal particles as fuel to burn in a pure oxygen environment to generate electricity. Before entering the furnace, pulverized spherical coal particles with an average diameter of 300 mm, are being transported at 2 m/s through a 3-m long heated tube while suspended in hot air. The air temperature in the tube is 900°C and the average convection heat transfer coefficient is 250 W/m2·K. Determine the temperature of the coal particles at the exit of the heated tube, if the initial temperature of the particles is 20°C.
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
Oxy-fuel combustion power plants use pulverized
coal particles as fuel to burn in a pure oxygen environment to
generate electricity. Before entering the furnace, pulverized
spherical coal particles with an average diameter of 300 mm,
are being transported at 2 m/s through a 3-m long heated tube
while suspended in hot air. The air temperature in the tube is
900°C and the average
250 W/m2·K. Determine the temperature of the coal particles
at the exit of the heated tube, if the initial temperature of the
particles is 20°C.
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