Island hood required with 1000 extraction rate?

CKdesigner

Hi Chris1012

What hob do you have or are you having? Gas or induction or anything more sophisticated?

I agree with ryder72 a flush with ceiling extraction system would really be the most efficient but £2k to £3k would be a more realistic budget.

CK

chris1012

It will be an induction hood.

Looks like it will be an Elica after all.
Found one that has 1200 extraction rate for £1100

chris1012

less than £300 - http://www.appliance-world.co.uk/Baumatic_BTI9170GL_Island+Chimney+Hood.html

Myser

chris1012 wrote: »

less than £300 - http://www.appliance-world.co.uk/Baumatic_BTI9170GL_Island+Chimney+Hood.html

However, it does not have a high enough extraction rate for your kitchen area.

ryder72

Baumatic? Dont do it. If you insist - good luck.

chris1012

Sorry my measurements are wrong.

Although my whole area is open plan its 3 sections with different measurements for each section.

Utilities is 1.3 x 1.8 x 2.1
Kitchen/Diner 6 x 5 x 2.4
Living Area - 2.4 x 3 x 2.4

I think we get around 882 extraction rate so we could get away with an upto 1000 extraction although we would like the noise levels to be still less than 63db.

Would we still need an external motor and how would that be installed?

Thanks

ryder72

If your volume works out to 882 m3, work of approx a multiplier of *12.

This assumes you are able to install rigid ducting, preferably circular section without bends. Then start increasing motor capacity for each bend you might have to put in. Remember the claimed motor capacity is at top speed so its going to be noisy. 63dB is not very quiet at all so you are probably going to have to consider an external motor.

Unfortunately, ceiling extraction is a bit of a specialist area so its hard to give simple answers. Seek specialist advice or you could find you have spent a fair bit without any tangible results.

chris1012

Finally got my elica galcier islan hood installed with an external motor.

Ended up with 6inch ducting throughout with around a total of 6 meters run and 7 bends.

Not sure how good the extraction rate is but on level 1 I can stick a £5 note nicely still lol

Any ideas how I can test the extraction rate?

anotherbaldrick

chris1012 wrote: »

less than £300 - http://www.appliance-world.co.uk/Baumatic_BTI9170GL_Island+Chimney+Hood.html

We have one of those and it is bloody noisy, even on low speed it defeats all conversation.

Myser

chris1012 wrote: »

Any ideas how I can test the extraction rate?

If you wanted to test the exact flow-rate, you would need a calibrated air-flow meter inline with the ducting.

If you just want to test the extraction, you can use smoke pellets:

http://www.screwfix.com/p/rothenberger-smoke-pellets-13g-pack-of-6/75449

http://www.screwfix.com/p/smoke-pellets-5g-pack-of-10/64647

Coloured pellets are also available if you are trying to find any leaks.