THERMAL MODEL VALIDATION USING
EXPERIMENTAL AND
NUMERICAL APPROACH FOR PLATE HEAT
EXCHANGER
Name: AMAN CHUAHAN
ROLL NO: 22CH60R56
DEPARTMENT OF CHEMICAL ENGINEERING
INDIAN INSTITUTE OF TECHNOLOGY KHARAGPUR
CONTENTS
•
•
•
•
•
•
•
•
•
•
INTODUCTION
GEOMETRY OF PLATE HEAT EXCHANGER
EXPERIMENTAL APPROACH
THERMAL MODEL
PARAMETER ESTIMATION
EXPERIMENTAL PROCEDURE
NUMERICAL APPORACH
RESULT
CONCLUSION
REFERENCES
2
INTRODUCTION
• India as pharmacy of the world.
• Need of Plate Heat Exchanger in
various field.
Source:https://pbs.twimg.com/media/FJMQo1raMAAmsP8?format=jpg&name
=360x360
3
BASIC GEOMETRY OF PLATE HEAT EXCHANGER
a.
b.
c.
d.
e.
f.
g.
h.
Opened Plate pack.
Fixed end cover
Moveable end cover
Upper carrying bar
Lower carrying bar
Support column
Tightening bolts
Corrugated chevron
plate
i. Plate gasket
j. Plate port
Fig.1.Structure of Plate heat exchanger
4
FLOW PATTERN
• What is a Channel?
• Different Flow Pattern
Fig.2: Parallel arrangement
Fig.3: Series arrangement
5
CONTINUED…
• Nc P I, P II, Yh , Yf , Φ
Fig.4 Graphical view of Parameters
6
EXPERIMETNAL APPROACH
• Heat load
• Empirical formula
• Problem with FT
FT = FT (configuration, NTU, heat capacity ratio(C))
7
PARAMETER ESTIMATION
PARAMETER
ESTIMATION
APPROACH 1
APPROACH 2
Sufficient large number of
channels
Single pass, counter
current
FT=1
No restriction on
configuration
FT is calculated
through PDE
8
RESULT OF EXPERIMENTAL APPRAOCH
Fig.5: experimental vs calculated overall heat transfer(approach 1)
9
CONTINUED…
Fig.6: experimental vs calculated overall heat transfer(approach 2)
10
NUMERICAL APPRAOCH
NUMERICAL
APPORACH
FLUENT
MESH
GENERATION
K-e TURBULENCE
MODEL
MATERIAL
PROPERTIES AND
BOUNDARY
CONDITIONS
Fig.7 Mesh generation at the connector
RESIDUAL
VALUE
WALL
TREATMENT
GRID
DEPENDENCY
TEST
11
TEMPERATURE PROFILE
Fig.8: Temperature distribution for the channel for the series flow for 3D flow
12
RESULTS OF NUMERICAL APPROACH
Fig.9: predicted vs experimental overall heat transfer(approach 2)
13
CONTINUED…
Fig.10: predicted vs experimental overall heat transfer(approach 2)
14
CONCLUSION
NUMERICAL
APPROACH
EXPERIMENTAL
APPROACH
APPROACH 1
Narrow range of Pr
Neglecting mal
distribution
APPROACH 2
Heat load is
higher
Consider variety
of configuration
FT is calculated
through PDE
Detailed model
is required
Series more
accurate than
parallel
15
REFERENCES
• Jorge A.W. Gut, Renato Fernandes (2004). Thermal model validation
of plate heat exchangers with generalized configurations, 59,
Chemical Engineering Science. 4591-4600
• Flavio C.C. Galeazzo and Raquel Y. Miura (2006). Experimental and
numerical heat transfer in a plate heat exchanger,61, Chemical
Engineering Science, 7133-7138.
16
THANK YOU