1. Plate Heat Exchanger (PHE)
9/2003

2. Plate Heat Exchanger (PHE)
PHE – Main Components
Carrying Bar
Frame Plate
Pressure
Plate
Tightening Bolts
Plate with gasket
9/2003

3. Plate Components Summary
Suspension
Inlet / outlet
Passing through
Leak chamber
Distribution zone
Sealing
Main heat transfer
area
Cold formed in single step hydraulic pressing (up to tons)
9/2003

4. Click animation to play again
Plate Heat Exchanger
In Hot medium
Cold medium
Out Hot medium
Cold medium
Click animation to play again
9/2003

5. 9/2003

6. Thermal length - plates & channels
L: Low theta
H: High theta
We have two plate corrugations (L and H)
These form three different channels (L, M and H)
Low turbulence
& pressure drop, good “U” value and wall shear
Medium turbulence
& pressure drop - better “U” value and higher wall shear
High turbulence & pressure drop – best “U” Value and highest wall shear
L + L = L channels
L + H = M channels
H + H = H channels
9/2003

7. Minimising Fouling Through Design
Consider the fluids physical properties, size, quantity and characteristics of particles
Number & size of plates are determined by flow rate, physical properties, pressure drop & temperature program
High shear and turbulent flow help minimize fouling
9/2003

8. Gasket - Profile and Gasket Groove
Alfa Laval
Profile
Higher sealing pressure
Groove
Full support to gasket
The difference is life time and reliability
9/2003

9. PHE Assembly Process
9/2003