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A molten mixture of salt (NaNO3-KNO3) is used as the heat transfer fluid for application in a parabolic trough solar field. The molten salt at 300oC is flown through a steel pipe (k = 14 W/moC) whose inner and outer diameters are 9 cm and 10 cm, respectively, in an environment at 32oC. If the heat transfer coefficients on the inside and the outside of the pipe are 150 and 30 W/m2C, respectively:a. Determine the rate of heat loss from the molten salt per meter length of the pipe.b. If the pipe is insulated with 5-cm-thick SiO2 wool insulation (k = 0.017 W/moC), what would be the rate of heat loss per meter length of the pipe. What is the reduction in heat loss (in %) if we use the insulation.
how many grams of Na3PO4 will be needed to produce 250 mL of a solution of a solution that has a concentration of Na+ ions of 1.5 M.
Prepare a 3-input, 5 bit multiplexer that fits in a 24-pin IC package. Write the truth table and draw a logic diagram and logic symbol for the multiplexer.
How does artificial aging affect KIC in a 7075 alloy? Which is likely to have a higher KIC: 7075-T6 or 7075-T7? Explain.
how to calculate rupture point of a sample in four point bending, given dimensions, Young's modulus, Yield strength and I(Moment of inertia area)
An ideal vapor-compression refrigeration system operates at steady state with Refrigerant 134a as the working fluid. Superheated vapor enters the compressor at 30 lbf/in2, 20F, and saturated liquid leaves the condenser at 140 lbf/in2. The refriger..
Assuming that the bomb is perfectly insulated what is the temperature of the air in the bomb at the end of filling process? Assume air is an ideal gas with constant specific heats in a ratio Cp/Cv = γ = 1.4 and constant R= 287 J/kg K.
a. Find the temperature at the interface between the rod and sleeve and on the outer surface. b. What is the temperature at the center of the rod?
how to find the change in diameter of a cylinder of 225mm length, 25mm diameter and a load of 180Km?
Find the corresponding damping coefficient c. Identify the system parameters such as the natural frequency and damped frequency. Derive the mathematical expression of the displacement as a function of time with the given initial condition. Plot yo..
an ideal rankine cycle produces 100 MW of power. If the steam enters the turbine at 100 bar and 500C and is condensed at 1 bar, determine the flow rate of stream and the thermal efficiency.
let it cool back to the outdoor temperature, pass it through a turbine, and discharge the cold air leaving the turbine into the house. from a thermodynamic point of view, is the proposed system sound?
A thin electric heater is wrapped around a rod of diameter 3 cm. The heater dissipates energy uniformly at a rate of 1300 W/m. Air at 20°C flows normal to the rod with a velocity of 15.6 m/s. Determine the steady state surface temperature of the h..
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