19.1. A solution of sodium hydroxide leaves a dissolver at 80 °C and is to be cooled to 40 °C, using cooling water. The maximum flow rate of the solution will be 8000 kg/h. The maxi- mum inlet temperature of the cooling water will be 20 °C and the temperature rise is limited to 20 °C. 1202 CHAPTER 19 Heat-Transfer Equipment Design a double-pipe exchanger for this duty, using standard carbon steel pipe and fit- tings. Use pipe of 50 mm inside diameter, 55 mm outside diameter for the inner pipe, and 75 mm inside diameter for the outer pipe. Make each section 5 m long. The physical proper- ties of the caustic solution are:
19.1. A solution of sodium hydroxide leaves a dissolver at 80 °C and is to be cooled to 40 °C, using cooling water. The maximum flow rate of the solution will be 8000 kg/h. The maxi- mum inlet temperature of the cooling water will be 20 °C and the temperature rise is limited to 20 °C. 1202 CHAPTER 19 Heat-Transfer Equipment Design a double-pipe exchanger for this duty, using standard carbon steel pipe and fit- tings. Use pipe of 50 mm inside diameter, 55 mm outside diameter for the inner pipe, and 75 mm inside diameter for the outer pipe. Make each section 5 m long. The physical proper- ties of the caustic solution are:
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Heat Exchangers
Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.
Heat Exchanger
The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.
Question
Transcribed Image Text:19.1. A solution of sodium hydroxide leaves a dissolver at 80 °C and is to be cooled to 40 °C,
using cooling water. The maximum flow rate of the solution will be 8000 kg/h. The maxi-
mum inlet temperature of the cooling water will be 20 °C and the temperature rise is limited
to 20 °C.
1202 CHAPTER 19 Heat-Transfer Equipment
Design a double-pipe exchanger for this duty, using standard carbon steel pipe and fit-
tings. Use pipe of 50 mm inside diameter, 55 mm outside diameter for the inner pipe, and
75 mm inside diameter for the outer pipe. Make each section 5 m long. The physical proper-
ties of the caustic solution are:
Temperature, °C
40
80
specific heat, kJkg¬l°C¬!
density, kg/m³
thermal conductivity, W/m°C
viscosity, mN m~²s
3.84
3.85
992.2
971.8
0.63
0.67
1.40
0.43
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