Closed Thread
 
Thread Tools Display Modes
 
Old 04-10-2014, 06:38 PM   #61
TF Site Team
 
FlyWright's Avatar
 
City: California Delta and SF Bay
Country: Sacramento, CA, USA (boat in Vallejo)
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 10,170
If you want higher air density, you cool it. Providing flow-through with the fans oriented for one in-one out, you might achieve enough air replacement to keep the engine room temperatures lowered, therefore higher density air into the intake.

All this is just noise though...Tim found the purpose for the relays which is what he was after. Thanks for the update, Tim.
__________________
Advertisement

__________________
Al

Custom Google Trawler Forum Search
FlyWright is offline  
Old 04-10-2014, 09:41 PM   #62
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,864
On the hundreds of diesel boats I've run and worked on...the blowers/fans remove hot air by exhausting it and let the fresh air makeup come in from other vents or other multiple sources.

We are talking boats and not containers...I hope??????
__________________

psneeld is offline  
Old 04-10-2014, 10:25 PM   #63
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 9,994
Greetings,
All interesting points in this thread, thus food for thought. Mr. F. Your cool air fact makes me wonder if I should proceed with my "pipe dream" of air conditioning my ER. Even with both ports open, on a hot day and depending on winds it can reach 140F sometimes. Now I suppose I could brag and say I have a sauna on board but changing out a fanbelt in that heat on a hot engine, well....THAT'S what generated the, maybe "not so crazy after all" idea of AC in the holy place. It would have the added bonus of being a warm place to relax in a hammock on those cool evenings (AC off of course). It's amazing where one gets ideas occasionaly...


__________________
RTF
RT Firefly is online now  
Old 04-10-2014, 11:24 PM   #64
Guru
 
bligh's Avatar
 
City: Santa Cruz, CA
Country: USA
Vessel Name: Frisky
Vessel Model: 99 Nordic Tug
Join Date: May 2013
Posts: 1,096
The Op stated that carver made many more gas models than diesel models of his boat. His model was a diesel factory conversion. The fans must be leftover from the gas model buildout and dont serve any purpose.
bligh is offline  
Old 04-11-2014, 12:09 PM   #65
Guru
 
timjet's Avatar
 
Join Date: Apr 2009
Posts: 1,905
Quote:
Originally Posted by bligh View Post
The Op stated that carver made many more gas models than diesel models of his boat. His model was a diesel factory conversion. The fans must be leftover from the gas model buildout and dont serve any purpose.
The blowers are intended to provide air and cooling to the ER. I have a rather small ER and the blowers provide lots of air. They will suck the air conditioning right out of the boat if turned on with the AC running.

If I remember correctly the USPS boating course manual suggests operating the blowers on a gas boat several minutes BEFORE engine start. So activating the blowers via the ignition switch would not evacuate gas fumes from the bilge before engine start and is probably why only the diesel powered version of my boat has this feature ie: blowers connected to ignition switch.

Since I can remember to manually turn on the blowers when I operate the engines and genny I will probably not install fuses in the power feed. If they blow again I would not hear the blowers (or lack of) above the engine noise and they would be left off.
__________________
Tim
Tampa Bay
Carver 355 ACMY Twin Cummins Diesels Sold
timjet is offline  
Old 04-11-2014, 12:16 PM   #66
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,864
Quote:
Originally Posted by timjet View Post
The blowers are intended to provide air and cooling to the ER. I have a rather small ER and the blowers provide lots of air. They will suck the air conditioning right out of the boat if turned on with the AC running.

If I remember correctly the USPS boating course manual suggests operating the blowers on a gas boat several minutes BEFORE engine start. So activating the blowers via the ignition switch would not evacuate gas fumes from the bilge before engine start and is probably why only the diesel powered version of my boat has this feature ie: blowers connected to ignition switch.

Since I can remember to manually turn on the blowers when I operate the engines and genny I will probably not install fuses in the power feed. If they blow again I would not hear the blowers (or lack of) above the engine noise and they would be left off.
.................
psneeld is offline  
Old 04-11-2014, 02:08 PM   #67
Guru
 
Alaskan Sea-Duction's Avatar
 
City: Inside Passage Summer/Columbia River Winter
Country: USA
Vessel Name: Alaskan Sea-Duction
Vessel Model: 1988 M/Y Camargue YachtFisher
Join Date: Jul 2012
Posts: 3,140
Thanks for the thread and posting the solution. It kept me reading to find out what the problem/solution was.
__________________

__________________
1988 M/Y Camargue Yacht Fisher
Alaskan Sea-Duction
MMSI: 338131469
Blog: http://alaskanseaduction.blogspot.com/
Alaskan Sea-Duction is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 11:54 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012