Question

A typical carburetted water gas is 4.7% CO2, 7.8% C2H4, 0.3% O2, 36.5% H2, 35.5% CO, 8.6% CH4 and 6.6% N2. If this gas is saturated with H2O at 20°C, 742 torrs and burned in 10.434 m3 air at 30°C, 101 kPa and 60% RH per m3 fuel, calculate:

a. % excess O2

b. Orsat Analysis of stack gas (400°C, 760 torrs) if 75% of C burns to CO2, the rest to CO, and all H2 burns to H2O.

c. GCV (kJ/mol)

d. % calorific value lost due to i) CO, ii) uncondensed water vapour, and iii) sensible heat

e. Thermal Efficiency

Answer 1

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