Heat Flux Calculation: Copper Wire

Please see the attached file for the fully formatted problem(s). 1. A heated copper wire 1 mm in diameter is in a pool of water at 1 atm. What is the maximum heat flux (q/A)? The temperature difference is related to the heat flux (q/A) by the following equation: [Equation] What temperature difference (which we’ll call zTmax) is associated the maximum heat flux (q/A)? What is the corresponding heat transfer coefficient for this maximum heat flux situation? If the water were in the film boiling regime, what is the heat transfer coefficient corresponding to Tmax? Estimate the temperature difference T needed to achieve the maximum heat flux in the film boiling regime. What is the... click for more

Fluid Mechanics: Flow Rate Calculation

A tank car containing 4500 gal of 32% HCl is pressurized by air to 15 psig and sent through 100 ft of 2 inch schedule 80 PVC pipe. The receiving tank at the other end is at atmospheric pressure. Estimate the flow rate through the pipe and the time to empty the car. Assume the pressure in the tank car is constant.

Heat transfer: Condensation Rate Calculation

Saturated steam at 1.2 psia is condensed on the outside of a horizontal 3/4 inch 16 BWG steel tube. Cooling water enters the tube at 60 deg F and leaves at 75 deg F at a velocity of 6 ft/s. The heat transfer coefficient on the outside of the tube is 1600 BTU/hr*ft^2*F. Find the overall heat transfer based on the outside heat transfer area. Assume the overall heat transfer coefficient Uo is 350 BTU/hr*ft^2*F. If the tube is 16 ft long, what is the condensation rate of the staem in lb/hr?

Transfer Operations - Distillation

1. In distillation, how is the number of states related qualitatively to: a. the difficulty of the separation b. the tower height c. the tower diameter d. the liquid and vapor flow rates one sentence, brief summaries or a web page where this information is listed is acceptable

Gas Absorption and Transfer Operations: Column Diameter Calculation

A gas absorption column to handle 3630 kg/hr of a gas is being designed. Based on pressure drop, entrainment and foaming considerations, the maximum vapor velocity must not exceed 0.61 meters/sec. If the density of the vapor is 0.801 kg/m^3, what is the column diameter?