Where to find guidelines for building generator compartment?

[neoneddy]

Well turning the sound up (vertical)  is one way to deal with it.  I've seen some of those vertical stacks that also draw up additional air, Venturi effect?

I watched this when I was insulating my bedroom https://www.youtube.com/watch?v=pABvTWSxOes .   Turns out heavy dense material works the best.  I know some of the professional panels in hushboxes are just shredded and compressed denim.

Cover that with a fire retardant layer and you're set.

[sledhead]

this is the stack for my diesel boiler . no more stinky smell and it made the noise a lot less

https://photos.app.goo.gl/X8XHXNtCGjQT5jq97

dave

[richard5933]

I don't think that the exhaust is a major contributor to noise if it runs through a muffler. My focus would be on engine noise & vibration, air flow noise next.

Those diesel boilers can have noisier exhaust than a well-tuned generator with their blast furnace sound.

[sledhead]

you are right about the noise but the heat is fast and unlimited unless I run out of diesel

dave

[buswarrior]

Yes, Brian, you remember correctly.

Making the air intakes and exhaust turn corners is a big part of silencing the noise.

There are also "hospital grade" mufflers available to quiet the engine exhaust.

On the first, creating a cavity with plywood up the centre, to force it to go in, 'round the corner, and back to the originating side, and then into the generator space knocks down a lot of noise. If there's room, lining some of that with sound absorbing material prevents sound bouncing.

On the mufflers, they aren't cheap, i haven't looked at them in many years now...

Some rubber isolators under the unit, or small air bags, help reduce sound and vibration transmission to the chassis.

Happy coaching!
Buswarrior

[luvrbus]

Longer runs on exhaust piping works better than mufflers you need to be careful sizing to small it creates back pressure to large you get a echo affect.Now some parks require a spark arrester on generators.We were in a park in Utah this past trip they prohibited the use of diesel fired boilers I had use the electric heating elements on my AquaHot on their dime though   

[pabusnut]

Lead lined plywood is also available.  It works good for deadening sound and reducing radiation.  In a previous life I used it to shield the public from ionizing radiation.  Lead bricks work good too, but they get too heavy quickly!

[windtrader]

We were in a park in Utah this past trip they prohibited the use of diesel fired boilers I had use the electric heating elements on my AquaHot on their dime though   

Geez, that's a new one - no diesel powered hydronics allowed? Hummm.. need to sort out how to stay warm in the winter in one of these places, maybe, just stay elsewhere.

The only electric in my water circulation system is the hot water heater and I think it is plumbed into the hydro heating system, primarily to heat the hot water and engine block. It is a lot less powerful than the Webasto but in an emergency it could work on a couple radiators if I redirect the flow to them. A couple electric space heaters would work too.

[silversport]

Since you have a Wrico, call Dick, I took his seminar on hush box's at Bus'N' USA & purchase all material from them.

[belfert]

Since you have a Wrico, call Dick, I took his seminar on hush box's at Bus'N' USA & purchase all material from them.

I don't have a WRICO yet, but I am mailing the check today.  I talked to Dick on Friday and emailed him dimensions and pictures of my generator bay.  Dick has yet to call me or email me.  I talked to Justin and he tried to get Dick to call me, but nothing.  I don't really expect to ever hear back from Dick.

Justin made a up a CAD drawing for me of his suggested way to mount the radiator and generator.  I noticed it doesn't have any turns in the air intakes.  I have attached his drawing.

[richard5933]

Interesting that he has the air being drawn in through the floor and out through the side. Opposite of mine. Wouldn't there be concern about drawing all kinds of dust, grass, and other assorted crapola through the radiator sucking the intake air from the floor like that?

[luvrbus]

Dick doesn't stay around the office Brian he stays at home taking care of Genie,he will call you

[Jim Blackwood]

The amount of suction depends on the surface area of the opening. Made big enough it wouldn't be able to pick up a leaf. Also since hot air rises it is more efficient that way.

Jim

[richard5933]

The amount of suction depends on the surface area of the opening. Made big enough it wouldn't be able to pick up a leaf. Also since hot air rises it is more efficient that way.

Jim

With the amount of air the fan moves, whether hot air rises or falls is really irrelevant and won't make much of a difference.

Don't know about the premise that it won't pick up a leaf - my intake is on the side of the bus, and it's quite large. Probably twice the size of the output. Even on the side of the bus, if there is loose grass or leaves in the air it will pull them against the intake. Same for dust. Can't quote you a stitch of scientific formula or theory on this, but I can tell you what I see happening when we're parked in a grassy or wooded area and the generator runs. It only makes sense that it will be worse if the intake is closer to the debris.

Perhaps there is a good reason for putting the intake on the bottom, and that's partly why I asked. Just seems to go against what I've observed.

[Jim Blackwood]

I dunno. May not be practical to make the intake large enough to keep from pulling stuff in. It's something I'd like the answer to also.

Jim