Concurrent Engineering Aspects of HXs

1. Concurrent Engineering Aspects of HXs P M V Subbarao Professor Mechanical Engineering Department I I T Delhi A Complete Justification of HX Design….

2. do di Di Design for Safety of A HX

4. Measure of thermal stress:

5. Severity of Thermal Stresses

6. Double Pipe Heat Exchanger • A double pipe heat exchanger is one of the simplest form of Heat Exchangers. • The wall of the inner pipe is the heat transfer surface. • The major use of these HX is sensible cooling or heating applications. • But Very long, even for moderate capacities. • Unviable to accommodate in an industrial space. • To make a Unit Isotropically Compact, the arrangement is made in Multiple Times and Continuous Serial and Parallel flow.

7. Hairpin Heat Exchanger The inner tube is connected by U – shaped return bend enclosed in a return bend housing

8. Hairpin Heat Exchangers in series

11. Well preferred for heat transfer areas upto 50 m2

12. Ideas for Heat Transfer Betterment

13. e- NTU Curves: Counter flow e NTU

14. Ideas for Thermodynamic Betterment U-tube Annular in series & tubular in parallel Annular in parallel & tubular in series

15. More Innovative Configurations of DTHXs