|
Safety -- Make sure you are safe! |
2011-10-06, 9:36am
|
Junior Member
|
|
Join Date: Apr 25, 2011
Location: Jefferson City MO.
Posts: 28
|
|
Inline fan booster good?
Is an inline fan booster (500cfm) good as a "fan" for ventilation out of a fume cabinet?
http://www.amazon.com/8-Inch-110VAC-.../dp/B0007N73EQ
I know there are a bunch of Values involved to know whether or not it will be sufficient. What I am really after is, will this "booster" pull 500CFM or is it to weak to be a standard ventilation fan for a fume cabinet?
|
2011-10-06, 10:38am
|
|
Senior Member
|
|
Join Date: Aug 01, 2005
Posts: 2,159
|
|
As a rule these booster fans don't pull enough air to be useful, especially if you have any bends in your exhaust duct. The 500CFM is a rating for 'free air' with nothing to increase the static pressure. IMHO you'd be better served to look into a squirrel cage blower or regular in-line blower (non-booster type).
Robert
__________________
Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
|
2011-10-06, 10:48am
|
Junior Member
|
|
Join Date: Apr 25, 2011
Location: Jefferson City MO.
Posts: 28
|
|
|
2011-10-06, 11:04am
|
Senior Member
|
|
Join Date: Mar 07, 2011
Location: Northern California
Posts: 2,023
|
|
Quote:
Originally Posted by RSimmons
IMHO you'd be better served to look into a squirrel cage blower or regular in-line blower (non-booster type).
Robert
|
Just curious, Robert. Whats the difference?
|
2011-10-06, 12:37pm
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
Quote:
Originally Posted by InsaneIrish
Is an inline fan booster (500cfm) good as a "fan" for ventilation out of a fume cabinet?
http://www.amazon.com/8-Inch-110VAC-.../dp/B0007N73EQ
I know there are a bunch of Values involved to know whether or not it will be sufficient. What I am really after is, will this "booster" pull 500CFM or is it to weak to be a standard ventilation fan for a fume cabinet?
|
A "inline booster fan" is typically rated as a "booster" so be careful, it may be rated a lot less as a free air fan. Booster values mean nothing in your application, its the free air value that is important...
http://www.suncourt.com/Inductors.html
This site says the DB208 is only rated at 210cfm in free air....
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-06, 12:51pm
|
Senior Member
|
|
Join Date: Mar 07, 2011
Location: Northern California
Posts: 2,023
|
|
Quote:
Originally Posted by Dale M.
A "inline booster fan" is typically rated as a "booster" so be careful, it may be rated a lot less as a free air fan. Booster values mean nothing in your application, its the free air value that is important...
http://www.suncourt.com/Inductors.html
This site says the DB208 is only rated at 210cfm in free air....
Dale
|
Ahh. Good to know. Thanks.
|
2011-10-07, 5:54am
|
|
Senior Member
|
|
Join Date: Aug 01, 2005
Posts: 2,159
|
|
The exhaust fan on amazon isn't intended to be ducted and won't pull much air. Try shopping blowers at Grainger (grainger.com). I use a squirrel cage blower in a vacuum plenum on my hood but there are lots of other options.
Robert
__________________
Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
|
2011-10-07, 8:13am
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
Inline turbine fan generally used for hydroponics applications, generally good for studio ventilation.
Booster fan generally very low power - Not practical.
Squirrel cage blower that can be used in most any application -Probably best choice. But needs to be in a box (plenum) because it draws from both ends.
Squirrel cage blower that can be used in most any application. Draws from one end (able to attach duct work to it).
Window "BOX" fan can be used in open window as long as you have work table in front of window and fan is pulling air past you. Can be up to 2000CFM on high speeds(read fan specs if purchasing). Might be best inexpensive solution if you do not want permanent installation.
Remember all fan/ventilation installations need "make up air" or effort is almost useless and will endanger your health.
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-07, 9:35am
|
Junior Member
|
|
Join Date: Apr 25, 2011
Location: Jefferson City MO.
Posts: 28
|
|
Quote:
Originally Posted by RSimmons
The exhaust fan on amazon isn't intended to be ducted and won't pull much air. Try shopping blowers at Grainger (grainger.com). I use a squirrel cage blower in a vacuum plenum on my hood but there are lots of other options.
Robert
|
What is a vacuum Plenum?
|
2011-10-07, 10:49am
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
A box or chamber or duct that has a low pressure area (slight vacuum) caused by a fan or blower evacuating the air from the "space"...
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-08, 7:57am
|
|
Senior Member
|
|
Join Date: Aug 01, 2005
Posts: 2,159
|
|
Mine is a box built around the blower with an intake on the bottom attached to the hood and the exhaust duct connected to the blower output at the top. My blower is open on both sides (like Dale's 1st of a squirrel cage blower) so the box is wider than the blower. The blower produces a low pressure area inside the box which draws from the hood. Very good ventilation but more of an effort to install.
Robert
__________________
Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
|
2011-10-08, 10:22am
|
|
Curmudgeon Engineering
|
|
Join Date: Feb 15, 2006
Location: Near Seattle, WA
Posts: 1,723
|
|
Any double side intake fan will need a 'vacumn plenum' to work except if the fan is mounted inside the plenum/hood and draws directly from the hood. My first hood was built that way and the newer one is built as RS describes. Both work well.
|
2011-10-16, 7:32am
|
|
Senior Member
|
|
Join Date: Oct 08, 2011
Location: Missouri
Posts: 127
|
|
What should the fan/ or blower specs be? CFM? RPM?
|
2011-10-16, 10:35am
|
|
Curmudgeon Engineering
|
|
Join Date: Feb 15, 2006
Location: Near Seattle, WA
Posts: 1,723
|
|
The important specs for your use are CFM at what static pressure (duct dependent), operating voltage and current, and size. Also look at the mounting configuration; how difficult it is to bolt up somewhere.
The CFM needed will depend on the size of your hood or fume confinement opening area. Area in cuft. X 100 equals desired CFM. You can use 100 if the hood is enclosed on three sides.
|
2011-10-19, 4:18pm
|
|
Senior Member
|
|
Join Date: Feb 05, 2010
Location: Rural southwest Ohio
Posts: 427
|
|
I'm also trying to get my ventilation in order. Dale, I hope I don't appear too ignorant, but I can't get my head around the make up air. How the heck am I going to heat my studio in the winter if I'm pulling in cold air for make up and sending it all out the exhaust?
I'm sure there is a perfectly sensible answer but it is evading me
__________________
Deb
To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
|
2011-10-19, 4:45pm
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
As for keeping studio warm in winter and cool in summer, you bring the make air in by duct and into bench in front of you....
Look at second graphic in this thread....
http://www.artglassanswers.com/forum...php?f=22&t=150
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-19, 7:34pm
|
|
Just getting started!
|
|
Join Date: Oct 02, 2011
Location: Vancouver Island, BC
Posts: 142
|
|
Is a fan like this any good? It says 650cfm, however it's a range hood and I'm not sure if that is the actual number, or if you have to take in other considerations like the ducting (if you opt to use some, I would - it does have a filter system, but I wouldn't rely on that).
http://www.ebay.ca/itm/170713039485?...84.m1423.l2649
I'm trying to decide if I should buy something like this or build my own. I do want to keep costs down if possible, while at the same time providing more than adequate ventilation.
Thanks
Iesha
|
2011-10-20, 6:15am
|
|
Senior Member
|
|
Join Date: Aug 01, 2005
Posts: 2,159
|
|
If I were to use this unit the filters would be the first thing to go. They are made to catch grease and oil particles from cooking and will slow down your exhaust air flow. I'm not sure that the fan would be adequate, but baffles down the side would help direct your air flow so that it comes in from behind you rather from the sides. Mount it lower on the wall, closer to your bench top, than it is in the photos. This would help move the torch plume in the right direction (away from you).
To Deb: I bring in make up air from under my bench like Dale shows in his drawings. I use an in-line booster fan (from the original Glasscraft hood) and bring the air in from the bottom of a double-hung window up through the middle of my work table in front of my torch. It does very well in keeping the ventilation working properly while not removing all of the conditioned air from the studio.
Robert
__________________
Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
|
2011-10-20, 8:05am
|
Senior Member
|
|
Join Date: Mar 07, 2011
Location: Northern California
Posts: 2,023
|
|
Quote:
Originally Posted by IksBeadedCreations
Is a fan like this any good? It says 650cfm, however it's a range hood and I'm not sure if that is the actual number, or if you have to take in other considerations like the ducting (if you opt to use some, I would - it does have a filter system, but I wouldn't rely on that).
http://www.ebay.ca/itm/170713039485?...84.m1423.l2649
I'm trying to decide if I should buy something like this or build my own. I do want to keep costs down if possible, while at the same time providing more than adequate ventilation.
Thanks
Iesha
|
I dont think this unit has ANY provision for mounting ducting. It is a wall mounted unit with two side exhausts and filters. Might be more trouble than it is worth since you will have to modify to remove the exhaust air from your space.
|
2011-10-20, 10:01am
|
|
Curmudgeon Engineering
|
|
Join Date: Feb 15, 2006
Location: Near Seattle, WA
Posts: 1,723
|
|
I always vote for building your own. You can get a FREE furnace fan from most HVAC places since they have to pay to have them hauled away when they redo a furnace. The fan is often the last part to fail in a furnace; the electronics and heat exchangers are first to go. Free fan, custom hood and ducting to your design often works out to be more effective and less costly than a kludge of commercial parts being adapted to a special use. My 3 x 5 foot hood was fabricated by a local sheetmetal shop for less than $125.00. Fan is a 3 speed squirrel cage with over 3000cfm on high; about 1200 on low.
Sorry the 2nd pic is on its side. That is a plywood vacumn plenum that sits over the hood in the 'attic' above and blows out thru the side gable wall.
|
2011-10-20, 10:46am
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
Quote:
Originally Posted by IksBeadedCreations
Is a fan like this any good? It says 650cfm, however it's a range hood and I'm not sure if that is the actual number, or if you have to take in other considerations like the ducting (if you opt to use some, I would - it does have a filter system, but I wouldn't rely on that).
http://www.ebay.ca/itm/170713039485?...84.m1423.l2649
I'm trying to decide if I should buy something like this or build my own. I do want to keep costs down if possible, while at the same time providing more than adequate ventilation.
Thanks
Iesha
|
There are versions of this style hood that do have DUCT TYPE installations for through the wall or through the roof installations.... Also similar units with more than the 650cfm capacity of this unit...
Google shopping or "the find" can be your friend.
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-20, 10:55am
|
|
Senior Member
|
|
Join Date: Aug 01, 2005
Posts: 2,159
|
|
I assumed that the exhaust went out through the chimney on the top, probably with a 90 degree bend. A bend like that would increase the static pressure.
R
__________________
Robert Simmons
(Former) Director for Bead Donations
Beads of Courage, Inc.
|
2011-10-20, 3:26pm
|
|
Gentleman of Leisure
|
|
Join Date: Jun 10, 2005
Location: A Little Bit West of Yosemite Valley
Posts: 5,200
|
|
hmmmm.... Does say "ductless" or VENT installation.... Maybe it has option (included?) to vent out through wall....
Dale
__________________
You can lead a person to knowledge, but you can't make them think. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
Vendor-Artist-Studio-Teacher Registry To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
San Francisco - A Few Toys Short of a Happy Meal
|
2011-10-20, 11:10pm
|
|
Just getting started!
|
|
Join Date: Oct 02, 2011
Location: Vancouver Island, BC
Posts: 142
|
|
Thanks for the feedback Yeah I was wondering about that as well since it says both, and in the specs it says it includes ducting? I think I'm going to price out putting my own system together and see if it's a better way to go. I'd hate to bid on one of their auctions, spend all that money on shipping and then find out it's not going to work.
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -7. The time now is 4:42am.
|