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Consider a gas-fired boiler in which five coiled thin-walled, copper tubes of 25-mm diameter and 8-m length are submerged in pressurized water at 4.37 bars. The walls of the tubes are polished and may be assumed to be isothermal. Combustion gases enter each of the tubes at a temperature of Tm,i = 700°C and a flow rate of m = 0.08 kg/s, respectively
Methane gas (CH4) at 25° C, 1 atm enters an insulated reactor operating at steady state and burns completely with x % of theoretical air entering at 25°C, 1 atm. Calculate the adiabatic flame temperature (AFT) at x=100, 200, 300 and 400 % and plot t..
The 160-N weights of the arms AB and BC of the robotic manipulator act at their midpoints. Determine the sum of the moments of the three weights about A.
Calculate the percentage power saving when the carrier and one of the sidebands are suppressed in an AM wave modulated to a depth of 100 %.
an ideal diesel cycle has r23 and rc1.86. determine the specific net-work i.e. net-work per unit mass flow in terms of
the eifel aqueduct was built in 80 ad to provide water to present-day city of cologne. as one of the longest aqueducts
H2O at 50 kPa and 200 degrees C is compressed in a reversible, isothermal process with steady flow until it exists as a saturated vapor. Find w, q, and draw on a t-s diagram and p-v diagram
what four processes make up the ideal otto cycle? what is happening in an actual engine during the real processes that
A cylinder fitted with a piston contains air at 1 Mpa pressure and 300 C temperature, at which point the volume is 0.2^3. The total external force acting on the piston is proportional to V^3. The system is now allowed to cool to room temperature of 2..
the process and volume relation is given p8-4vbar for a non flow process where v is in cubic meter.if 130kj of work is
Determine (a) the horizontal line along which the shearing stress is a maximum, (b) the constant k in the following expression for the maximum shearing stress.
one hundred btu of heat are transferred directly from a thermal-energy reservoir at 1200 or to one at 600 or. calculate
an ideal vapor-compression heat pump cycle with refrigerant 134a as the working fluid provides heating at a rate of 15
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