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Far Galaxy
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| Joined: | Tue Jun 19th, 2007 |
| Location: | Apprx 32.2degrees N Latitude |
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Posted: Thu Jun 19th, 2008 12:34 am |
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I only know this much:
-Fiberous filters for debris and particles. Non reusable
-Electromagnet filters which have opposite charges to attract particles. Reusable.
What others that you know of?
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riba
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| Joined: | Tue Jun 26th, 2007 |
| Location: | Vancouver, British Columbia Canada |
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Posted: Sat Jun 28th, 2008 05:30 pm |
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Type of filters:
Absorption filters are for gaseous contaminates removal, "activated charcoal" filters are the most common of these type.
Air Washers, control humidity and bacterial growth
Electronic Air Cleaner less maintenance, but pose a threat do to ozone production
Pleated types filters and roll types. These are from MEEB 10th edition.
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Marzipan
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Posted: Sun Jun 29th, 2008 06:35 pm |
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| Air Filters (Media) versus HEPA filters (high efficiency particulate filters, more $$$$$ but better).
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riba
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| Location: | Vancouver, British Columbia Canada |
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Posted: Mon Jun 30th, 2008 04:27 pm |
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| Does anyone know the placement of these filters?
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Calhass
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Posted: Wed Jul 2nd, 2008 06:37 am |
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| I have seen they are part of an AHU. You will see that if you review mechanical shop drawings.
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riba
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| Location: | Vancouver, British Columbia Canada |
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Posted: Wed Jul 2nd, 2008 02:19 pm |
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| Thank you,
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sharcitect
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Posted: Wed Jul 2nd, 2008 05:13 pm |
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I should preface this response by saying that I haven't yet started studying for this exam, so I may not know what I am talking about.
I was recently working with an HVAC guy who said he removes the crappy filters that come with the AHUs and installs filters at each return instead, for what its worth.
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riba
Member
| Joined: | Tue Jun 26th, 2007 |
| Location: | Vancouver, British Columbia Canada |
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Posted: Wed Jul 2nd, 2008 05:17 pm |
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| make sense to locate them at return air. Thanks
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Far Galaxy
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Posted: Wed Jul 2nd, 2008 08:26 pm |
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sharcitect wrote: I should preface this response by saying that I haven't yet started studying for this exam, so I may not know what I am talking about.
I was recently working with an HVAC guy who said he removes the crappy filters that come with the AHUs and installs filters at each return instead, for what its worth.
the filter inside AHUs is a high grade 6" thick min. filter and is a must have. It is not only to filter the return air, but also the outside fresh air. Filters at return intakes are recommended. These filters are thin and need to be replace regularly. You can't go wrong with more filters. I don't know what you hired that HVAC guy for, but I suggest that you go and get his agg to put in that expensive piece of filter inside the unit. You are being ripped off.
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