Exhaust Systems

The test cell exhaust system must be able to:

  • Remove engine exhaust
  • Ventilate room to remove heat, fumes and smoke
  • Provide air supply for engine combustion

There are two types of exhaust systems. An exhaust hood style system and a closed (pipe) style system.

Exhaust Hood:

Dyne Systems can design a hood style extraction system to meet the unique requirements of your facility. A hood style exhaust system does not require any engine connections, reducing the test time and labor involved with setup. If an overhead crane will be used to move engines into and out of the test cell, the standard hood style system cannot be used. A custom hood style system may be an option for use with an overhead crane; however, facility layout and other design restrictions may not allow this option.

Features of the Exhaust Hood include:

  • Canopy style exhaust hood, fabricated out of steel with a powder coating
  • Various hood sizes available
  • Internal baffle increases fume capture velocity
  • Temperature resistant up to 1,000°F (537°C) fiberglass strips front and rear to facilitate a safe vehicle entering and exiting
  • Roof-mounted fan for accessibility and easier maintenance up to 40,000 CFM
  • Fan comes with rain cap and gravity operated dampers
  • Customer supplies roof curb, motor starter and duct from canopy to fan

Closed Exhaust System:

A closed exhaust system requires direct connection to the engine and removes only engine exhaust. The advantage of a closed exhaust system is the test cell is quieter than with an open exhaust system. A separate fan-powered exhaust system is required to pull in make-up air and discharge the heat and fumes.

Closed Exhaust Kit includes:

  • Engine drop in test cell using flex-steel (1 or 2 as applicable to design)
  • Silencer with roof/cradle mount (to be installed on roof or mezzanine)
  • Two (2) thimbles
  • Exhaust piping (total length varies per kit)
  • Four (4) 90 degree elbows
  • Rain cap
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