Victoria Sponge
Well-Known Member
We're near to one now. It woke us up at 6.30. 
Are Eberspacher exhausts antisocial?
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Jassira
Well-Known Member
*Us stinkpotters can actually get our wives(singular) to go boating with us.
I knew there was a reason I brought a sail boat
nigel1
Well-Known Member
Dockhead
Well-Known Member
I can usually get 22 amps out of UK shore power connections, which amounts to about 5kW. I have about 3.5kW of electrical heaters on board, which is good enough. Can't keep the whole boat at 20, of course, but does very well at keeping chill off a couple of sleeping cabins plus salon.
My Eber theoretically puts out 10kW of heat, but it will also not keep the whole boat warm when it's below freezing. I wear a sweater and try to be happy with 10 - 12 degrees inside, if it's below freezing outside. If it's really cold I can run the genset and put on the electric heaters in addition to the Eber.
Heating is important to me since I sail all winter (and LOVE winter sailing). I think about putting water-to-water heat exchangers between both engine and genset fresh water cooling circuits and my central heating circuit. The genset, like all IC engines, wastes most of its thermal energy as waste heat, dumping a ton of heat into the sea -- I think 20 kW or so -- which would be fantastic for heating.
lw395
Well-Known Member
The problem with fitting an effective silencer to an eberbasto is that the exhaust needs to stay hot, to avoid condensing a lot of acidic liquid. In a vehicle, the eber exhaust normally drips onto the ground. In a boat it must be sealed, to prevent fumes filling the hull, so the only way out for the water produced from combustions is as vapour. Unless of course the exhaust can be designed to drain.
Yes they are too noisy.
There is also structure borne noise that can be improved with rubber mounts.
The inlet noise can be improved by using sound absorbent foam in the area it breathes from.
Yes they are too noisy.
There is also structure borne noise that can be improved with rubber mounts.
The inlet noise can be improved by using sound absorbent foam in the area it breathes from.
DaveS
Well-Known Member
Some of the figures quoted for heat requirements are interesting. On my 30 foot Etap (foam sandwich hull) a 1 kW fan heater maintains an inside temperature 10 degC higher than outside. Obviously a bigger and/or more poorly insulated boat is going to require more, but I'm surprised at how much more.
Victoria Sponge
Well-Known Member
The boat near us has one and it woke us up again this morning, at 6.15. My OH isn't very happy about the noise. Should we say something?
clyst
Well-Known Member
I guess its a marina you are in . Most marinas are full of noises apart from ebersatchers . Wind howling in rigging, mooring ropes stretching and creaking, pontoons rattling , and general boaty noises ie engines running etc. Not forgetting people talking and quacking ducks wanting feeding . Sorry but marinas are not libraries.
Victoria Sponge
Well-Known Member
Yes, of course you're right. I don't know what to think quite, but OH is a bit grumpy about being woken up. It's a right racket to be honest.
clyst
Well-Known Member
Make him a nice cup of tea and take him to a chandlery for some "retail" therapy .
jordanbasset
Well-Known Member
I would have a quiet polite word with them, they may not be aware of the noise. When we are sleeping in the fore cabin we cannot hear the eberspacher but am aware when I get off the boat it can be a little noisy so adjust time for it to come on until just before time we get up. Soon warms the boat up.
But in a marina we do find electric heaters more than sufficient to keep boat warm
David2452
Well-Known Member
Again, fitting the things properly overcomes this, correct lagging and a gas tight condensate drain at the lowest point is all that is needed. Stainless exhaust and silencer also helps as does regular use.
nigel1
Well-Known Member
Hi David, can a condensate drain be fitted to the flexible exhaust, or will it require a short section of rigid stainless pipe to take the drain.
David2452
Well-Known Member
It comes ready with a short length of rigid SS tube and often a couple of exhaust clamps, just cut the exhaust, clean the inside out a bit, apply some exhaust assembly paste and Bob's yer uncle. As this is PBO, I guess you could knock one up from a bit of tube and a a schrader valve or something, if you could be arsed.
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lw395
Well-Known Member
Is there a commercial part for the condensate drain?
Do you pump it overboard or what?
It's trade off of complication for quietness and efficiency. It would be good to be using the waste heat to dry out lockers etc.
David2452
Well-Known Member
Yes, the 24mm one is Webo part # 92164A
No, it's only ever a few cc at worse, just into a cup or even soak onto a rag.
VicMallows
Well-Known Member
That sounds about right to me. The problem is that some people want the inside to be 20C when it's below 0C outside. Apparently some even like to keep it that hot overnight. (I've never understood why houses have radiators in the bedrooms .... but then I do live down south
).Plevier
Well-Known Member
The factory installed Webasto in my Jeanneau just drains into the bilge. The pipe has a loop in it as a water trap so that you don't have exhaust gas escaping, only condensate, tiny amount.
I wonder if you could braze a pipe to the drain hole on one of the cheap silencers and use it the same way? Mine is actually pretty quiet externally anyway, much quieter than Ebers seem to be, is this normally the case for Webastos?
Pete7
Well-Known Member
Ah that's interesting, I have been keeping my head down whilst reading this thread incase the anti heating lobby start chucking brick in my direction as well as the Ebar owners.
Ran our Webasto (ST2000) over the hols and stepped onto the pontoon to see what all the fuss was about. Seemed quite quiet to me and wouldn't expect someone in a another yacht to be able to hear it in their bunks.
Pete
David2452
Well-Known Member
The Webasto one with the curly pipe is very good and needs little atention, I don't notice Webasto being quieter than Ebers given like for like size and exhaust lengths. Frankly I wouldn't worry too much about condensate damaging one of the marine silencers, they are Stainless and quite heavy so a drain in the lowest point of the exhaust pipe will do it.