XIAO Zhuonan. Exergy efficiency of the pulverized coal boiler with O2/CO2combustion and O2/N2 combustion[J]. Thermal power generation, 2013, 42(11): 1-5.
XIAO Zhuonan. Exergy efficiency of the pulverized coal boiler with O2/CO2combustion and O2/N2 combustion[J]. Thermal power generation, 2013, 42(11): 1-5.DOI:
According to the definition and computational method of exergy
the first and second laws of thermodynamics
an exergy efficiency calculation model for pulverized coal boiler under O2/CO2atmosphere was established.Taking a 400t/h pulverized coal boiler as the example
the exergy loss
boiler exergy efficiency and boiler thermal efficiency were calculated
in conventional air atmosphere and oxyfuel atmosphere with O2and CO2volume ratio of 3to 7.The results showed that
the O2/CO2combustion technology can enhance the boiler efficiency
but no matter what kind of the atmosphere
the exergy efficiency was far below the thermal efficiency
namely energy assessment should consider not only the quantity
but also the quality.The boiler exergy efficiency calculation revealed the energy utilization degree in quality and quantity