Find Outlet Temp of Cold Stream of Counterflow in Double Pipe Heat Exchanger

Click For Summary
SUMMARY

To determine the outlet temperature of the cold stream in a counterflow double pipe heat exchanger, apply the principles of energy conservation and the heat exchanger equations. Given the mass flow rate, specific heat capacity (Cp), inlet temperatures of both hot and cold streams, and the overall heat transfer coefficient, the outlet temperature can be calculated using the effectiveness-NTU method or the logarithmic mean temperature difference (LMTD) approach. The inner pipe diameter is also a critical factor in calculating the heat transfer area required for accurate results.

PREREQUISITES
  • Understanding of heat exchanger design principles
  • Familiarity with the effectiveness-NTU method
  • Knowledge of the logarithmic mean temperature difference (LMTD) calculation
  • Basic thermodynamics, specifically energy conservation laws
NEXT STEPS
  • Study the effectiveness-NTU method for heat exchangers
  • Learn how to calculate the logarithmic mean temperature difference (LMTD)
  • Explore the impact of mass flow rates on heat exchanger performance
  • Investigate the role of the overall heat transfer coefficient in heat exchanger design
USEFUL FOR

Mechanical engineers, thermal system designers, and students studying heat transfer principles will benefit from this discussion, particularly those focused on optimizing heat exchanger performance.

kyta
Messages
3
Reaction score
0
Given the mass flow, Cp, temp of the inlet streams of both hot and cold streams.
As well as being given the inner pipe diametre of the double pipe heat exchanger.
Also knowing the setting is at counterflow and that the overall heat transfer coefficient and that the temp difference between the two liquids is no less than 10C at any point in the exchanger.

How would you go about finding the outlet temp of the cold stream?

What equations would you use?
 
Engineering news on Phys.org
kyta said:
Given the mass flow, Cp, temp of the inlet streams of both hot and cold streams.
As well as being given the inner pipe diametre of the double pipe heat exchanger.
Also knowing the setting is at counterflow and that the overall heat transfer coefficient and that the temp difference between the two liquids is no less than 10C at any point in the exchanger.

How would you go about finding the outlet temp of the cold stream?

What equations would you use?

Conservation principles (energy and mass).

CS
 

Similar threads

Heat Exchanger Network Design
  • · Replies 2 ·
Replies
2
Views
2K
Dynamic Simulation After Feed Flow Reduction
  • · Replies 2 ·
Replies
2
Views
3K
Heat Transfer Coefficient in Large Pipe w/Smaller Pipes
  • · Replies 2 ·
Replies
2
Views
3K
Double pipe heat exchanger design guide
  • · Replies 2 ·
Replies
2
Views
5K
Double Pipe Heat Exchanger books
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Practical use of an overall heat transfer coefficient?
  • · Replies 14 ·
Replies
14
Views
3K
Design of a Double Pipe Heat Exchanger
  • · Replies 12 ·
Replies
12
Views
4K
Undefined log-mean temperature in heat exchanger design
  • · Replies 3 ·
Replies
3
Views
2K
High School Is Mean Temp in 2 phase Heat Exchangers Higher Than Logarithmic Mean?
  • · Replies 78 ·
3
Replies
78
Views
5K
Efficient and Affordable Solar Pool Heating Solutions
  • · Replies 14 ·
Replies
14
Views
4K