60. It is desired to concentrate a 20% salt solution (20 kg of salt in 100 kg of solution) to a 30% saltsolution is 110°C, the latent heat of vaporization is 2100 kJ/kg. and the specific heat of thesolution in an evaporator. Consider a feed of 300 kg/min at 30°C. The boiling point of thesolution is 4kJ/kg K). The rate at which heat has to be supplied (in kJ/min) to the evaporatoris(a) 3.06 x 105(b) 6.12 x 105(c) 7.24 x 10561. Hot water (0.01 m³/min) enters the tube side of a cocurrent shell and tut(d) 9.08 × 105(8(c67. Aa

Mass flow rate of feed = 300 kg/minConcentration of feed solution = 20 kg/ 100 kg solution…

Answered: solution) to a 30% salt . It is desired…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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The lower heating value for gaseous n-octane is 44,791 kJ/kg, and its latent heat of vaporization is 300 kJ/kg. Using this information, determine the enthalpy of formation at 298 K for liquid n-octane in kJ/kmol. (Here you are to compute the enthalpy of formation from the given information, not look it up in a property table.)
A single effect evaporator was used to concentrate 8000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the evaporator at 15 ° Celsius. The evaporator was operated by steam (80% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° Celsius. the specific heat of the Ecer material is 4.1 KJ / (kg degrees Celsius) and the concentrate product is 3.1 KJ / (kg degrees Celsius). Count it a. Steam demand rate = b. Steam economy if Condensate temperature is released at 75 ° Celsius =
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Fruit juices at 30 ° C containing 5% total solids were concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 ° C, and 85% quality steam is supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The rate of concentrated product leaving the evaporator is 2000 kg / hour. The specific heat of fruit juice is 4.05 kJ / (kg ° C), and the concentrated product 3.175 kJ / (kg ° C). Count a. The required vapor rate is = ... kg / hour. b. Steam economy if the condensate temperature cannot be released at 90 ° C. = ... (kg evaporated air / kg vapor)
05: Acetylene gas (C₂H₂) at 25 °C is burned during a steady-flow combustion process with 30 percent excess air at 27 °C. It is observed that 75x10³ kJ of heat is being lost from the combustion chamber to the surroundings per kmol of acetylene. Assuming combustion is complete, determine the exit temperature of the product gases.
Fruit juices at 30 ° C containing 5% total solids were concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 ° C, and 90% quality steam is supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The rate of concentrated product leaving the evaporator is 2000 kg / hour. The specific heat of fruit juice is 4.05 kJ / (kg ° C), and the concentrated product is 3,175 kJ / (kg ° C). Count a. The required steam rate is = kg / hour. b. Steam economy when the condensate temperature is released at 90 ° C. = (kg of water evaporates / kg of steam)
Fruit juice at 20 degrees Celsius contains 5% total solids concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 degrees Celsius and 85% quality steam is supplied at 169.06 KPA. The desired concentration of the final product is 40% total solids. the rate of concentrated product leaving the evaporator is 2500 kg / hour. the specific heat of the fruit juice is 4.05 kj / (kg degrees Celsius) and the concentrated product is 3.175 kj / (kg degrees Celsius). Calculate a. The required steam rate is b. the steam economy of the steam economy. If the condensate temperature is released at 90 degrees Celsius
A single effect evaporator is used to concentrate 10 000 kg / hr of tomato juice from 5% total solids to 30% total solids. The juice enters the Evaporator at 20 ° C. The evaporator is operated on Steam (80% quality) at 143.27 kPa. The vacuum in the evaporator allows the juice to boil at 80 ° C. The specific heat of the dilute material is 4.1 kJ / (kg ° C) and the concentrate product is 3.1 kJ / (kg ° C). Count it (a) Steam demand rate = Answer kg / hour. b. Steam economy when condensate temperature is released at 75 ° C. = Answer (kg of water evaporated / kg of steam)
Fruit juices at 25 ° C containing 5% total solids were concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 ° C, and 85% quality steam is supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The rate of concentrated product leaving the evaporator is 2000 kg / hour. The specific heat of fruit juice is 4.05 kJ / (kg ° C), and the concentrated product is 3,175 kJ / (kg ° C). Count a. The required steam rate is = kg / hour. b. Steam economy when the condensate temperature is released at 90 ° C. = (kg of water evaporates / kg of steam)
Fruit juices at 20 ° C containing 5% total solids were concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 ° C, and 85% quality steam is supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The rate of concentrated product leaving the evaporator is 3000 kg / hour. The specific heat of fruit juice is 4.05 kJ / (kg ° C), and the concentrated product is 3,175 kJ / (kg ° C). Count a. The required steam rate is = Answerkg / hour. b. Steam economy when the condensate temperature is released at 90 ° C. = Answer (kg of water evaporates / kg of steam)
1. Fruit juice at 20 ° C containing 5% total solids concentrated via a single effect evaporator. The evaporator is operated in a vacuum at an evaporation temperature of 80 ° C, and 90% quality steam is supplied at 169.06 kPa. The desired concentration of the final product is 40% total solids. The rate of concentrated product leaving the evaporator is 2500 kg / hour. The specific heat of fruit juice is 4.05 kJ / (kg ° C), and the concentrated product 3.175 kJ / (kg ° C). CountA. The required steam rate is = Answererkg / hour.b. Steam economy if the condensate temperature cannot be released at 90 ° C. = Answer (kg evaporated air / kg steam)

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