Exhaust of FRP

[Alik]

Need info on exhaust design of FRP. Specially interested in suitable materials. We're going to have ones for 280h.p. diesels, Please, share Your experience.

[nemo]

As far as I know, phenolic resins are suitable for exhausts, because those resins are the best ones for high temperatures (around 160°C).
If interested, I can post some pictures of large frp exhausts (1000 HP).

[Alik]

Interested!

[nemo]

Hi,
Hope these pictures can inspire you. You can see exhaust pipe with low speed and high speed pipes. They have been laminated with phenolic resins. You can also see waterjet ducts. They have been laminated together with the hull, on a 4 pieces plug.

[Alik]

Thanks, Nemo!

[JORGE LANG]

When we design an exhaust system where FRP tubing will be required, this is what we use. The exhaust should never approach temperatures of 160c, but we know what debris can do to a water intake. Also, we only use silicon hose connections that also have the same temperature rating. I hope this helps.

[cyclops]

I will bite. Why or what is the big advantage?

[JORGE LANG]

Besides building exhaust systems for major O.E.M. builders, we do a lot of replacement systems. In some cases we see frp tubing or mufflers that have overheated. The source of the excessive heat in the exhaust after it has been cooled by the raw water could be many things, obstruction to the water going to the exhaust mixer tank, clogged diffuser, or a system not designed for a specific engine and/or application. By using a higher rated frp resin and silicon hose, adds a little insurance against damage. Considering the differeance in price, it's well worth the protection.

[Walaa]

My company (Centek Industries - USA) is a specialist in FRP exhaust system components. In fact, that is all we do. We use a high temperature polyester resin good to 350 F. You can get more information at our web-site at www.centekindustries.com

Feel free to contact me for more information.

Walaa