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
SHELLHEADERTUBES
MaterialPressure + bargMaterialPressure + bargMaterialPressure + barg
Glass1(2)Glass1(2)Glass3.5(6)
Mild Steel6Mild Steel6Silicon Carbide3.5(10)
Stainless Steel6Stainless Steel6Graphite3.5(6)
Enamel Lined6Enamel Lined6  
PTFE Lined6PTFE Lined6  

 

Technical specification

SR.No.Area M2DN(Shell Dia)DN 1(Unity Inlet)DN 2(Vapour Inlet)DN 3(Liquid Drain)DN 4(Vent)LL1L2L3L4L5
10.6100405025501150340255125110135
21.0100405025501665340770125110135
31.51004080255023653651145125110135
42.515050100255020653751115150150185
53.015050100255023653751415150150185
64.015050100255029653752015150150185
75.015050100255036653752715150150185
85.02258015040802065460985210180220
96.322580150408023654601285210185220
108.022580150408029654601885210185220
1110.022580150408036654602585210185220
1210.030080225501002065550815275230270
1312.5300802255010023655501115275230270
1416.0300802255010029655501715275230270
1520.0300802255010036655502415275230270
1625.0300802255010043655503115275230270
1735.04001002255015034157001865350275325
1840.04001002255015037157002165350275325
1940.04501002255015030157001415380300325
2045.04001002255015044157002865350275325
2145.04501002255015034157001815380300325
2250.04001002255015044157002865350275325
2350.04501002255015037157002215380300325

 

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