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a. Determine the log mean temperature difference (°C) if the brine outlet temperature is -10°C (i). b. Determine the log mean temperature difference (°C) if the brine outlet temperature is -5°C (ii). c. Determine the log mean temperature difference (°C) if the brine outlet temperature is 5°C (iii). d. Compute for the area (m²) required if the brine outlet temperature 15°C 5°C 5°C (ii) - 5°C (i) - 10°C |- 20°c is -10°C (i). e. Compute for the area (m²) required if the brine outlet temperature is -5°C (ii). f. Compute for the area (m²) required if the brine outlet temperature is 5°C (iii). g. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -10°C (i). h. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -5°C (ii). i. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is 5°C (iii). te

a. Determine the log mean temperature difference (°C) if the brine outlet temperature is -10°C (i). b. Determine the log mean temperature difference (°C) if the brine outlet temperature is -5°C (ii). c. Determine the log mean temperature difference (°C) if the brine outlet temperature is 5°C (iii). d. Compute for the area (m²) required if the brine outlet temperature 15°C 5°C 5°C (ii) - 5°C (i) - 10°C |- 20°c is -10°C (i). e. Compute for the area (m²) required if the brine outlet temperature is -5°C (ii). f. Compute for the area (m²) required if the brine outlet temperature is 5°C (iii). g. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -10°C (i). h. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -5°C (ii). i. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is 5°C (iii). te

Introduction to Chemical Engineering Thermodynamics
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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A heat exchanger is to be designed for a capacity of 100 kW. Water for air conditioning purpose is to be cooled from 15°C to 5°C in a counter flow arrangement using brine available at -20°C. The value of overall heat trarsfer coefficient is 650 W/m²K and may be assumed to be constant. The specific heat of brine is 4167 J/kg-°C.
Transcribed Image Text:A heat exchanger is to be designed for a capacity of 100 kW. Water for air conditioning purpose is to be cooled from 15°C to 5°C in a counter flow arrangement using brine available at -20°C. The value of overall heat trarsfer coefficient is 650 W/m²K and may be assumed to be constant. The specific heat of brine is 4167 J/kg-°C.
a. Determine the log mean temperature difference (°C) if the brine outlet temperature is -10°C (i). b. Determine the log mean temperature difference (°C) if the brine outlet temperature is -5°C (ii). c. Determine the log mean temperature difference (°C) if the brine outlet temperature is 5°C (ii). d. Compute for the area (m²) required if the brine outlet temperature is -10°C (i). 15°C 5°C 5°C (ii) - 5°C (ii) - 10°C | - 20°C e. Compute for the area (m²) required if the brine outlet temperature is -5°C (ii). f. Compute for the area (m?) required if the brine outlet temperature is 5°C (iii. g. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -10°C (i). h. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -5°C (ii). i. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is 5°C (iii).
Transcribed Image Text:a. Determine the log mean temperature difference (°C) if the brine outlet temperature is -10°C (i). b. Determine the log mean temperature difference (°C) if the brine outlet temperature is -5°C (ii). c. Determine the log mean temperature difference (°C) if the brine outlet temperature is 5°C (ii). d. Compute for the area (m²) required if the brine outlet temperature is -10°C (i). 15°C 5°C 5°C (ii) - 5°C (ii) - 10°C | - 20°C e. Compute for the area (m²) required if the brine outlet temperature is -5°C (ii). f. Compute for the area (m?) required if the brine outlet temperature is 5°C (iii. g. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -10°C (i). h. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is -5°C (ii). i. Determine the mass flow rate (kg/s) of the brine if its outlet temperature is 5°C (iii).
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