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A spherical vessel used as a reactor for producing pharmaceuticals has a 5 - mm - thick stainless steel wall (k = 17 W/m middot K) and an inner diameter of D, = 1.0 m. During production, the vessel is filled with reactants for which p = 1100 kg/m3 and c = 2400 J/kg middot K. while exothermic reactions release energy at a volumetric rate of q = l04 W/m3. As first approximations, the reactants may be assumed to be well stirred and the thermal capacitance of the vessel may be neglected. The exterior surface of the vessel is exposed to ambient air (Tin finity = 25degreeC) for which a convection coefficient of h = 6 W/m2 middot K may be assumed If the initial temperature of the reactants is 25degreeC, what is the temperature of the reactants after five hours of process time? What is the corresponding temperature at the outer surface of the vessel? Explore the effect of varying the convection coefficient on transient thermal conditions within the reactor.
The acceleration due to gravity is 9.81 m/s^2. What is the force needed to hold a mass of 2 kg at rest in this gravitational field, both in N, kgf, and lbf? How much mass (kg) can a force of 1 N support?
an isolated chamber with rigid walls is divided into two equal compartments one containing steam at 10 bar and 370oc
Design a high pressure homogenizer for the manufacture of 10^6 kg per year of salad dressing.
find the entropy in a throttling process per unit mass for ammonia. take the inlet state as specified as saturated
a moving particle has coordinates in millimeter which vary with the time t in seconds according to r2t2-4ti 3t2 -t33j
an isolated system consists of a closed copper vessel of mass 0.1 kg containing 1 kg of liquid water each initially at
prepare the project objectives based on the requirement out lined at the next page.the following is the project
a power unit has a power rating of 30 kw and supplies flow at a rate of 60 lpm, what is the maximum pressure this unit can withstand?
determine the theoretical conversion efficiency for a methaneoxygen fuel cell that operates at a temperature of 500
a residential hot water heater initially contains water at 60c degree celcius someone turns on a shower and draws water
consider the one-dimensional flow whose velocity is given by u x t i. a determine the unsteady convective and total
An evacuated 1-ft3 tank is connected by a valve to a nitrogen supply line flowing air at 120 psi and70oF. A valve is opened allowing air to flow into the tank until the pressure reaches 90 psi. How much mass flowed into the tank and what is its final..
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