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Before entering the furnace, the air is preheated from 32F to 575F. At what rate (Btu/h) must heat be transferred to the air if the feed rate of propane is 1.35*10^5 SCFH?
A pipe at the focal line receives 450 lbm/hr of water at 200 psia and at 100oF and exits at 180 psia. Calculate the pipe exit conditions. Assume concentrator reflective losses of 5%.
If the slope of this line is 0.675 and the y-intercept is 5.55, calculate the time in minutes is required for the reaction to reach 50% completion.
The facility is required to collect all the vented air and route it to a biofilter to control total emissions to less than 30 kg of ethanol per day. Calculate the required control efficiency.
Indirect labor andother overhead is calculated simply at a rate of $5.00/hr, while general office expenses are calculated at a rate of $2.00/hr. What is the manufacturing cost for one pump?
Sketch the P vs. v cycle/diagram for this ideal Rankine power plant (including the P vs. v bell-curve for water/steam and the exact values of P & v at each stage).
Find the location of the stagnation point at the nose of the body, in terms of q and U. Generate an expression for the dividing streamline as a function of q.
Determine the value of the horizontal force P necessary to cause motion of the chest to the right, and determine if the motion is sliding or tipping.
Calculate the volume of H2 produced at 1 atm and 298K. Assume the current efficiency is 100% and the hydrogen behaves as an ideal gas (use 1L*1atm=101J)
Determine the natural convection heat transfer coefficient and averaged Nusselt number from the experimental results at 8 cm from the bottom of the plate.
For 2.0 mole of methane per second, determine the amount of heat that can be transferred if the gases exit the process at 800.oC.
The water splatters in all direcions in the plane of the plate. How much force is required to hold the plate against the water stream?
Estimate (a) the overall efficiency of the solar powerplant and (b) the efficiency of energy transmission to the steam in the central receiver, both at peak conditions. Assume a reasonable I is 1.0
From the solar constant (1353 W/m^2) and the average distance between the sun and the earth (r = 1.49x1011m) estimate (a) the total power emitted by the sun, in megawatts, and (b) the mass loss of
The throat has a diameter of 3 cm and the propellant has a ratio of specific heats of 1.2. Calculate the thrust when it is operated at vacuum conditions.
The propulsion system structure and other components have a mass of 20% of the propellant mass. What is the minimum exhaust velocity required for this system to work?
Estimate your final velocity after you have shot all the marbles one at a time. Would you get any benefit (increased velocity) by shooting more than one marble at a time? Explain.
If the input rotational velocity of shaft 1 is 201 rad/s and the input rotational velocity of shaft 2 is 152 rad/s, then what is the output rotational velocity of shaft 5 in rad/s?
What is the minimum carbon concentration (in atome percent) that will cause the alloy to impde the motion of all dislocations?
What is the flow rate of the cooling water in the condenser? You may assume that the cooling water is incompressible, and is at atmospheric pressure = 100 kPa.
Find the intermediate pressure, the turbine work, the back work ratio, and the cycle thermal efficiency. Assume 15 kg/s air flow rate.
Develop an equation for dh/dt where h is the level and t is time. Then solve the equation numerically. Water is at 20 degrees celcius, tank is initially at 10 m high, pipe is 2.6 m long.
This BFW is a "compressed liquid water." How much heat energy, experssed as MBTU/hr., is required to effect this BFW preheat at 75 gal./min. BFW rate? This value is needed to design the heat transfe
The metered mass flow rate of hydrogen in 5.0 kg/s, and 20 kJ/kg heat loss to the atmosphere is estimated. Assuming hydrogen to be an ideal gas, determine the required power input to operate this co
Calculate the internally reversible efficiency using the adiabatic flame temperature for the temperature of the high temperature reservoir and 300K for the temperature of the low temperature reservo