Glass Shell and Tube Heat Exchanger

Introduction

Shell and Tube Heat Exchangers are one of the most common and versatile types of exchangers used in heat transfer applications. They allow transfer of large amounts of heat in a more compact construction than is possible with conventional coil type heat exchangers. Shell and Tube type Heat Exchangers find application as heaters, coolers, condensers, vaporizers, reboilers, etc.

Area: Upto 50 m2

No. Of Pass: Upto 3 Pass

Pertinent Features of Shell Tube Heat Exchanger

  • They have colossal Heat Transfer Surfaces.
  • They have high Heat Transfer Coefficients.
  • The sides of Shell, as well as Tubes, can be made diffusion and corrosion-resistant.
  • Their Modular Design helps make the maintenance simple and also makes the reserves part stocking work efficiently.
  • They can handle pressure up to +6 bar G.
  • They are perfectly suitable for Pharmaceutical GMP applications that manufacture ultra-pure products.
  • They are available with a different working capacity of heat transfer areas ranging from 0.3m2 to 50m2.
  • They are highly resistant to corrosion, erosion, and oxidation across the full range of operating temperatures.

 

Application

Shell and Tube Heat Exchanger comes with a universal design whose application helps in the smooth working of the heat transfer processes such as

  • Condensation
  • Heat Transfer
  • Cooling
  • Reboiler

And they are designed with high endurance and performance measures that help them operate at temperatures ranging between -40 °C to +150 °C, and they can handle the pressure between -1 Bar G to +3.5 Bar G.

Variants

  • Translucent reinforced protective coating to prevent from accidents from breakage of glass
  • Multi-Pass headers in Metal for more efficient heat transfer
  • Vertical installation possible with minor modifications
  •  GMP, cleanroom models available in all types
  • Tubes of exotic materials such as Hastelloy etc. available on request in the same design
  • Other process connection sizes can be modified as per application and user requirement
  • Tubes of SiC and graphite also available, offering higher thermal conductivity.

 

Types of Shell And Heat Tube Exchangers

TYPE-I: Both Sides Corrosion Resistant

This is the universal and most common design of shell and tube heat exchanger, where both shell side and tube side are resistant to corrosion. It finds usage in applications such as condensation in the shell side, heat recovery, and cooling in a shell or tubes. With minor modifications, it can also be used as a falling film absorber and falling film evaporator.

TYPE-II: Shell Side Corrosion Resistant

Type-II Heat exchangers are very similar to TypesI but have Metal (Mild steel or Stainless Steel) Headers instead of glass headers. These are used in applications where there is no risk of corrosion at the service/utility side. The process side comes in contact only with the glass shell or PTFE components, and hence can be corrosive. Thus, this design 1’5 generally used for condensation and tempering of corrosive liquids.

TYPE-III: Tube Side Corrosion Resistant

Type-II Heat exchangers are very similar to Type-I but have Metal (Mild steel or Stainless Steel) Headers instead of glass headers. These are used in applications where there is no risk of corrosion at the service/utility side. The process side comes in contact only with the glass shell or PTFE components! And hence can be corrosive. Thus, this design is generally used For condensation and tempering 0f corrosive liquids.

TYPE-IV: Shell Side Corrosion Resistant, High Tube Side Pressure!

A key factor due to which maximum permissible pressure is limited in Shell & Tube Heat Exchangers is the Tube sheet, which cannot withstand a high pressure since it is made of pure PTFE. In applications where corrosion is not an issue at the utility side, a reinforcing plate can be installed at the header side of the PTFE Tube Sheet. This increases the maximum pressure limit up to 6 Bar.

TYPE-V: Tube Side Corrosion Resistant; High Shell Side Pressure!

This design of the Shell and Tube Heat exchanger again uses the reinforcing metal plate to increase maximum permissible operating pressure. However, in this type, the pressure is raised on the shell side since the plate is installed on the shell side of the Tube Sheet and not the header side.

 

Mode Of Construction

Ablaze offers a huge variety of MOCs to choose from, depending on process requirements

COMPONENT
SHELL HEADER TUBES
Material Pressure + barg Material Pressure + barg Material Pressure + barg
Glass 1(2) Glass 1(2) Glass 3.5(6)
Mild Steel 6 Mild Steel 6 Silicon Carbide 3.5(10)
Stainless Steel 6 Stainless Steel 6 Graphite 3.5(6)
Enamel Lined 6 Enamel Lined 6    
PTFE Lined 6 PTFE Lined 6    

 

Technical specification

SR.No. Area M2 DN(Shell Dia) DN 1(Unity Inlet) DN 2(Vapour Inlet) DN 3(Liquid Drain) DN 4(Vent) L L1 L2 L3 L4 L5
1 0.6 100 40 50 25 50 1150 340 255 125 110 135
2 1.0 100 40 50 25 50 1665 340 770 125 110 135
3 1.5 100 40 80 25 50 2365 365 1145 125 110 135
4 2.5 150 50 100 25 50 2065 375 1115 150 150 185
5 3.0 150 50 100 25 50 2365 375 1415 150 150 185
6 4.0 150 50 100 25 50 2965 375 2015 150 150 185
7 5.0 150 50 100 25 50 3665 375 2715 150 150 185
8 5.0 225 80 150 40 80 2065 460 985 210 180 220
9 6.3 225 80 150 40 80 2365 460 1285 210 185 220
10 8.0 225 80 150 40 80 2965 460 1885 210 185 220
11 10.0 225 80 150 40 80 3665 460 2585 210 185 220
12 10.0 300 80 225 50 100 2065 550 815 275 230 270
13 12.5 300 80 225 50 100 2365 550 1115 275 230 270
14 16.0 300 80 225 50 100 2965 550 1715 275 230 270
15 20.0 300 80 225 50 100 3665 550 2415 275 230 270
16 25.0 300 80 225 50 100 4365 550 3115 275 230 270
17 35.0 400 100 225 50 150 3415 700 1865 350 275 325
18 40.0 400 100 225 50 150 3715 700 2165 350 275 325
19 40.0 450 100 225 50 150 3015 700 1415 380 300 325
20 45.0 400 100 225 50 150 4415 700 2865 350 275 325
21 45.0 450 100 225 50 150 3415 700 1815 380 300 325
22 50.0 400 100 225 50 150 4415 700 2865 350 275 325
23 50.0 450 100 225 50 150 3715 700 2215 380 300 325

 

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