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Shell and tube heat exchangers - Coggle Diagram
Shell and tube heat exchangers
Main components
Shell
Shell cover
Tubes
Channel
Channel cover
Tube sheet
Baffles
Nozzels
Design
Required data
Flow rates of both streams
Inlet and outlet temperatures of both sreams
Operating pressure of both streams
Fouling resistance for both streams
Physical properties of both streams
Heat duty
Type of heat exchanger
Line sizes
Preferred tube size
Maximum shell diameter
Materials of construction
Special considerations
Heat Transfer coefficient
Function of the Reynolds number, Prandtl number and tube diameter
Variation on viscosity has the most important effect on this coefficient
Nu = 0.027 (Re)^0.8 (Pr)^0.33
Pressure drop
Pressure drop is proportional to the square of velocity and the total length of travel.
The distribution of pressure drop in heat exchangers may be varied to obtain good heat transfer
Classification
Based on construction
Shell Types
Split Flow
Double Split Flow
Two-Pass Shell
with Longitudinal Baffle
Divided Flow
One-Pass Shell
Kettle-Type Reboiler
Cross Flow
Rear Head Types
Fixed Tube Sheet
Like "B" Stationary Head
Fixed Tube Sheet
Like "C" Stationary Head
Fixed Tube Sheet
Like "A" Stationary Head
Floating Head with Backing Device
Outside Packed Floating Head
Pull-Through Floating Head
U-Tube Bundle
Externally Sealed
Floating Tubesheet
Stationary Head Types
Removable Channel and Cover
Bonnet (Integral Cover)
Integral With Tubesheet
Removable Cover
Integral With Tubesheet
Removable Cover
Channel Integral With Tubesheet
and Removable Cover
Special High-Pressure Closures
Based on Service
Single phased
Condensing
Vaporizing
Condensing/Vaporizing