Engineering, 26.11.2019 05:31 hijdjdjdbdjidjdbdbd
Aliquid mixture of benzene and toluene containing 50.0 wt% benzene at 100.0 °c and pressure p0 atm is fed at a rate of 32.5 m3/h into a heated flash tank maintained at a pressure ptank < < p0. when the feed is exposed to the reduced pressure in this unit, a portion of it evaporates. the liquid and vapor product streams are in equilibrium at 75.0 °c and ptank. the liquid product contains 43.9 mole% benzene. when carrying out the requested calculations, assume volume additivity of liquid benzene and toluene, use raoult's law and the antoine equation where necessary, and negelect the effect of pressure on enthalpy.
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For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater
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Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
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Aliquid mixture of benzene and toluene containing 50.0 wt% benzene at 100.0 °c and pressure p0 atm i...
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