Determine the mass flow rates of water and steam fed to the mixer if stream of water is formed by mixing of water with saturated steam. Concept Introduction: Since given problem is associated with both mass and energy changes, so we consider general energy balance here which is defined as: d ( m U ) tank d t + Δ [ ( H + 1 2 U 2 + z g ) m • ] = Q • + W • ....(1)

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← Homework 8 View Policies Show Attempt History Current Attempt in Progress A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into a heated flash tank maintained at a pressure Ptank Material Balances Correct. 0.67/1 === Attempts: 1 of 5 used Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products. Ptank .544 atm Ybz .657 mol benzene/mol vapor product nvapor 55.8 mol/s nliquid 37.6 mol/s Hint GO Tutorial Energy Balance Check heat capacities. Calculate the required heat input rate in kilowatts. i 0.447 kW Hint GO Tutorial Save for Later Assistance Used Attempts: 2 of 5 used Assistance Used Attempts: 1 of 5 used Submit Answer

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Question

Chapter 6, Problem 6.74P

Interpretation Introduction

Interpretation:

Determine the mass flow rates of water and steam fed to the mixer if stream of water is formed by mixing of water with saturated steam.

Concept Introduction:

Since given problem is associated with both mass and energy changes, so we consider general energy balance here which is defined as:

d(mU)tankdt+Δ[(H+12U2+zg)m•]=Q•+W• ....(1)

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