A 0.410 mol n-butane/mol, 0.590 mol propane/mol mixture at 25°C enters a furnace. In a separate stream, air enters the furnace in 10.0% excess at 171.0°C. The fuel reacts completely. Calculate the adiabatic flame temperature by following the steps below. Take 100 mol of fuel as the basis. Assume the heat capacity for O2 is 3.31 à 10-2 kJ/(mol·°C), N2 is 3.13 à 10-2 kJ/(mol·°C), H2O is 3.85 à 10-2 kJ/(mol·°C), and CO2 is 5.00 à 10-2 kJ/(mol·°C).

What is N2, the moles of air entering the furnace?

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery