Carbon dioxide (CO:) is used for the gas cooled reactor in shell and tube heat exchanger type steam generator (shown in Figure 2). 90000 kg/h entered to the exchanger under pressure and temperature of 4 bar and 500 °C respectively. The steam saturation temperature is 250 °C when the carbon dioxide leave the generator at 330°C. Presume the formed steam is saturated and dry. Using 25 mm inner diameter and 2 mm wall thickness, a copper tube is designed for CO; mass flow rate of 350000 kg/m'h. Neglect the thermal resistance of the steam side. (a) Determine number of tubes that should be used (b) Determine the length of the tubes Take the following properties for the carbon dioxide: Cp=1.172 KI/kg °C; u=0.0000298 Ns/m²; k=0.043 w/m °C; p=3.26 kg/m² Take k (Copper) = 384 W/m °C Water in (cold fluid) - 250°C CO, (hot fluid) in (f = 500°C) CO, out (2 - 330°C) Steam out (2 250°C)

Carbon dioxide (CO:) is used for the gas cooled reactor in shell and tube heat exchanger type steam generator (shown in Figure 2). 90000 kg/h entered to the exchanger under pressure and temperature of 4 bar and 500 °C respectively. The steam saturation temperature is 250 °C when the carbon dioxide leave the generator at 330°C. Presume the formed steam is saturated and dry. Using 25 mm inner diameter and 2 mm wall thickness, a copper tube is designed for CO; mass flow rate of 350000 kg/m'h. Neglect the thermal resistance of the steam side. (a) Determine number of tubes that should be used (b) Determine the length of the tubes Take the following properties for the carbon dioxide: Cp=1.172 KI/kg °C; u=0.0000298 Ns/m²; k=0.043 w/m °C; p=3.26 kg/m² Take k (Copper) = 384 W/m °C Water in (cold fluid) - 250°C CO, (hot fluid) in (f = 500°C) CO, out (2 - 330°C) Steam out (2 250°C)

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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Concept explainers

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

Carbon dioxide (CO:) is used for the gas cooled reactor in shell and tube heat exchanger type steam
generator (shown in Figure 2). 90000 kg/h entered to the exchanger under pressure and temperature of
4 bar and 500 °C respectively. The steam saturation temperature is 250 °C when the carbon dioxide leave
the generator at 330°C. Presume the formed steam is saturated and dry. Using 25 mm inner diameter and
2 mm wall thickness, a copper tube is designed for CO; mass flow rate of 350000 kg/m'h. Neglect the
thermal resistance of the steam side.
(a) Determine number of tubes that should be used
(b) Determine the length of the tubes
Take the following properties for the carbon dioxide:
Cp=1.172 KI/kg °C; u=0.0000298 Ns/m²; k=0.043 w/m °C; p=3.26 kg/m²
Take k (Copper) = 384 W/m °C
Water in (cold fluid)
- 250°C
CO, (hot fluid)
in (f = 500°C)
CO, out
(2 - 330°C)
Steam out (2 250°C)

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