Service is our Business. Heat Exchangers are our Product.

Transition / Duct Helical Finned Heat Exchangers

The transition heat exchanger with alloy and Hastelloy materials is excellent for product purity and corrosive service applications.

Industries Served:

  • Chemical
  • Pulp & Paper
  • Pharmaceutical
  • Refinery


  • Low Pressure Air/Process Gas Cooling
  • Low Pressure Air/Process Gas Heating
  • Heat Recovery
  • Environmental
Transition Heat Exchangers Duct Helical Heat Exchangers

Hoffman Process, Inc. designs and provides transition type finned tube heat exchangers for Air/Gas applications where pressure drop and space are critical. Gas is directed across a bank of finned tubes that provide up to 25 times the bare tube heat transfer surface area. By proper design, pressure drop may be limited to a few inches of water column or less. Air/gas temperatures to 1500°F can be processed with proper selection of the fin and tube materials, and method of bonding the fin to the tube.

Heat Exchangers Transition Heat Exchangers

Various design arrangements are available including:

  • Removable bundle for inspection and cleaning
  • Non-removable bundle for clean and non-corrosive service
  • Horizontal Air/Gas flow
  • Vertical Air/Gas flow, either up or down flow
Transition / Duct Helical Heat Exchangers

Hoffman provides thermal design with process guarantee using in-house software; mechanical designs for the bundle are per ASME Code and API 661 Standards.