Temperature of Nitrogen in a Pipe

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SUMMARY

The discussion focuses on calculating the temperature of nitrogen as it travels through a 30-meter pipe at a flow rate of 1.5 liters per minute. The nitrogen starts at 50°C and the ambient temperature of the pipe is 20°C. Key parameters include the pipe's outer diameter (0.00635m), inner diameter (0.00457m), specific heat ratio of nitrogen (1.4), absolute pressure (9 bar), and density (9.47748 kg/m³). The user seeks guidance on determining the velocity of nitrogen as a first step in solving the temperature change along the pipe.

PREREQUISITES
  • Understanding of fluid dynamics and flow rates
  • Knowledge of thermodynamics, specifically gas temperature changes
  • Familiarity with specific heat ratios and their applications
  • Basic calculations involving pipe dimensions and fluid density
NEXT STEPS
  • Calculate the velocity of nitrogen using the flow rate and pipe dimensions
  • Research heat transfer principles in fluid systems
  • Learn about the effects of pressure on gas density and temperature
  • Explore the use of thermodynamic equations to model gas behavior in pipes
USEFUL FOR

Engineers, students in mechanical or chemical engineering, and anyone involved in fluid dynamics or thermodynamic analysis of gases in piping systems.

daz18983
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Hi, i am on work experience and they have given me a short task which is sort of the next step up from work i have done previously. Can anyone help me with the following:-

Vessel containing nitrogen at 50 oC

Nitrogen is pumped along a 30m length of pipe at a flow rate of 1.5 litres per minute

pipe line is at ambient temp 20 oC

I need to find the temperature of the Nitrogen upon it reaching the end of the pipe at 30m

I have calculated and gathered the following info -

pipe OD - 0.00635m
pipe ID - 0.00457m
Specific Heat Ration of Nitrogen (k) - 1.4
Absolute Preesure through pipe - 9bar
Density of nitrogen at 9bar - 9.47748 kg/m3

I'm not exactly sure how to start this?? But i have looked through some books and believe i need to work out the velocity first?? Any help would be greatly appreciated.
 
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Please ignore this post and refer to the later post on 01/07/2008 named "Thermodynamics Change in Gas Temperature along pipe" which is an attempt at the question and should be a clearer.

Thanks
 

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