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According to experimental results for parallel airflow over a uniform temperature, heated vertical plate, the effect of free convection on the heat transfer convection coefficient will be 5% when GrL/Re2L = 0.08. Consider a heated vertical plate 0.3 m long, maintained at a surface temperature of 60°C in atmospheric air at 25°C. What is the minimum vertical velocity required of the airflow such that free convection effects will be less than 5% of the heat transfer rate?
What mass of propane must be burned to furnish this amount of energy assuming the heat transfer process is 60.% efficient?
List in detail all information and data necessary to determine if a proposed tube diameter and gauge number would be satisfactory.
Calculate the efficiency of the induction generator.
Determine a numerical value for the acentric factor w implied by the RedlicWKwong equation.
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
Calculate the density of atoms along [011] in molybdenum (Mo). Express your answer in units of atoms/cm.
Rank the following 3 metals in order of increasing Young's Modulus: W, Cr, Mo. Do not look up the values of Young's Modulus, instead base your answer on what you know about the structure and chemistry of these elements.
Calculate the percentage of solvent in the dried fabric by weight. What is the concentration of solvent in the dryer exhaust (in g/m3) if the exhaust is at 80 degrees C and 1 atm? The solvent has a molecular weight of 86.
200 kJ of heat is added under constant pressure to 1 kg of steam initially at 30 bar, 400 °C. What is the final temperature? What is the change in internal energy during this process?
However, they are not used when the high-pressure stream is a saturated liquid. Why? Illustrate by determining the downstream state for isentropic expansion of saturated liquid water at 5 bar to a final pressure of 1 bar.
HEAT TRANSFER PROBLEMS NO16- Water flowing in a steel pipe of diameter 0.02 m is to be cooled from 40 to 30 oc . The velocity of water in the steel pipe is 1.5 m/s .
QUESTION 11 - Steam boiler plant in a petroleum refinery has an overall thermal efficiency on gross C.V . of the fuel of 85 % and an out put of 90720 kg of steam per hour. The steam is produced at a pressure ..
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