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  1. 800Logs

    Is it legal for engineering firm to pay referral fees for business?

    Is it legal for engineering firm to pay referral fees for business? I have an engineering license and am thinking of doing this. I am pretty sure lawyers are not allowed to offer or pay referral fees. Any ideas on where HVAC consulting engineering firms find their business? How do they find...
  2. 800Logs

    VAV design guide

    Could anyone familiar with VAV design recommend a book basic guide that I could download or purchase? Something that starts with the basics and goes from there. Thank you
  3. 800Logs

    Outlook for HVAC design engineers?

    The outlook for mechanical engineers in general https://www.bls.gov/ooh/architecture-and-engineering/mechanical-engineers.htm. Does anyone know of more detailed sources other than bls.gov? It would be useful to know specifically what the outlook is for mechanical engineers-hvac design. It...
  4. 800Logs

    Enthalpy of air from air tables differ from enthalpy from psychrometric chart

    Hi, I have uploaded two images. One is a table of Low Pressure Air Properties. The other is a typical psychrometric chart. If you look up the enthalpy of air at 60F (520 R) in the low pressure air table, you get an enthalpy of 127.27 btu/lbm. If you look up the enthalpy of air with zero...

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