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  1. #1
    Join Date
    Jun 2012
    Location
    UAE - Dubai
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    10

    HVAC engineer development

    Hi all

    1st of all, I would like to mention that I am glad to find this great website. I am a Mechatronics Engineer, during my degree program, i had couple of courses of Refrigeration and air conditioning systems + load calculations.

    Now I would like to focus on HVAC engineering, so Im seeking for a guide to a start point from zero. In order to be an HVAC engineer and maybe a certified one, whats the best approach to develop myself, resources to read, courses or training.

    The reason I wanted to focus on HVAC is because a friend has an engineering company and we would like to start a new activity which is air conditioning design service for residential as a start and then maybe light commercial.

    I appreciate your co-operation. Waiting for the experts ..

    Regards

    Ahmad From Dubai - United Arab Emirates.

  2. #2
    Join Date
    Jul 2009
    Location
    st louis mo
    Posts
    334
    residential? lol, get real, you will go broke

  3. #3
    Join Date
    Jun 2012
    Location
    UAE - Dubai
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    10
    mike dixon

    Hey, as i said it is a start for me to develop myself technically + there is a high demand on ACs for residences in my country since today is 48 degrees celcuis

    Thanks

  4. #4
    Join Date
    Feb 2012
    Location
    GTA, ON
    Posts
    1,284
    Residential systems usually don't require engineering expertise. Any half-decent resi tech should be able to design and install a proper solution. Industrial-Commercial-Institutional is where you wanna be. Already being a mech eng is a huge leg up, but you will need to take some additional courses to develop a proper level of understanding for the subject. Here's a good resource to get you started http://www.youtube.com/playlist?list...5&feature=plcp

  5. #5
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,407
    here in the US HVAC techs use ACCA manual J for residential load calculations, books and software can be purchase from the website: https://www.acca.org/store/

    As you know unlike the rest of the world we here use crappy inch-pound/Fahrenheit units, dont know if the ACCA has the manuals in metric units.

  6. #6
    Join Date
    Jun 2012
    Location
    UAE - Dubai
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    10
    Moonrunner

    in my country, the demand on residential applications is very high, we need the AC mostly even during winter. I understand that I need extra training and this is I posted this thread to know where to start from. I will check the link you provided.

    I appreciate it, Thanks

  7. #7
    Join Date
    Jun 2012
    Location
    UAE - Dubai
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    10
    valdelocco

    Thanks for the link. I did the calculations based on ASHRAE standard in college, which uses the same units you mentioned (PI).

    thanks again

  8. #8
    Join Date
    Feb 2012
    Location
    GTA, ON
    Posts
    1,284
    Ahmad, the demand may be high, but for resi applications, it's already been engineered at the factory. The technician runs the air distribution system (if there isn't a decent one in there already) based on established best practices and installs the equipment. If you wanna get in on the technical side of it, great.. We could use more engineers willing and able to get their hands dirty without making a mess of things. I'm just telling you that there is precious little engineering work done in resi applications and it's usually done by the manufacturers and techs.

    One resi scenario where it pays off to hire an engineer: When you're doing lots of identical units, like a townhouse complex, as a package deal, that's when the builder can save on space/equipment/materials if an engineer gets in there and starts tweaking the design.

  9. #9
    Join Date
    Jun 2002
    Location
    Dacula, GA
    Posts
    12,851
    Need to get into duct design. A lot of installers don't give a crap about good air distribution. Manual D tells how to do it. ASHRAE Fundamentals Handbook 2009 Edition is even better. Get them and become an ace on proper air distribution / duct design and that should help you a lot along with load calculation which ASHRAE covers in the same book. Manual J is great but I like ASHRAE method in chapter 17 of Fundamentals book even better. Good luck
    "I could have ended the war in a month. I could have made North Vietnam look like a mud puddle."
    "I have little interest in streamlining government or in making it more efficient, for I mean to reduce its size. I do not undertake to promote welfare, for I propose to extend freedom. My aim is not to pass laws, but to repeal them. It is not to inaugurate new programs, but to cancel old ones that do violence to the Constitution."
    Barry Goldwater

  10. #10
    Join Date
    Nov 2004
    Location
    up in the hizzy
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    1,407
    Ahmad,

    what kind of residential HVAC systems are predominant in your country?
    the middle east has a love affair with mini-splits,VRF etc.

  11. #11
    Join Date
    Jun 2012
    Location
    UAE - Dubai
    Posts
    10
    Quote Originally Posted by valdelocc View Post
    Ahmad,

    what kind of residential HVAC systems are predominant in your country?
    the middle east has a love affair with mini-splits,VRF etc.
    You are right, there is a huge demand on split-duct AC systems and Central AC.
    Duct designing is really on high demand even for personal houses especially the big ones.

    We have big families that live together and build big villas, and they demand package AC systems and split-duct system. For townhouses complexes in some areas, they tend to use chillers and then of course ducts for air distribution, especially air cooled chillers.

    thanks and regards .

  12. #12
    Join Date
    Jun 2012
    Location
    UAE - Dubai
    Posts
    10
    Quote Originally Posted by glennac View Post
    Need to get into duct design. A lot of installers don't give a crap about good air distribution. Manual D tells how to do it. ASHRAE Fundamentals Handbook 2009 Edition is even better. Get them and become an ace on proper air distribution / duct design and that should help you a lot along with load calculation which ASHRAE covers in the same book. Manual J is great but I like ASHRAE method in chapter 17 of Fundamentals book even better. Good luck
    I have studied some duct design, from the aspect of sizing. I had practices calculating the required size during my college course. I Agree with you, air distribution is critical, as calculating the cooling load required is not enough.

    Thank you for leading me to the materials of methods. I am more familiar with ASHRAE, gonna start from there.

    Thanks

  13. #13
    Join Date
    Jun 2012
    Location
    UAE - Dubai
    Posts
    10
    Quote Originally Posted by Moonrunner View Post
    Ahmad, the demand may be high, but for resi applications, it's already been engineered at the factory. The technician runs the air distribution system (if there isn't a decent one in there already) based on established best practices and installs the equipment. If you wanna get in on the technical side of it, great.. We could use more engineers willing and able to get their hands dirty without making a mess of things. I'm just telling you that there is precious little engineering work done in resi applications and it's usually done by the manufacturers and techs.

    One resi scenario where it pays off to hire an engineer: When you're doing lots of identical units, like a townhouse complex, as a package deal, that's when the builder can save on space/equipment/materials if an engineer gets in there and starts tweaking the design.
    Yup I agree 100% with you, the residential projects is the target as a start as you mentioned, the townhouse complexes which is so popular and increasing in here

    Thanks

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