HVAC stands for Heating Ventilation and Air Conditioning. There realy is no difference, though some might think that "air conditioning" refers to the cooling component, but I like my air conditioned to be warm and clean in the winter too.
What is difference between hvac and ahu
AC (Air Conditioning) is made for cooling and heating, ventilation that kills microorganisms. HVAC (Heating, Ventilation, Air Conditioning) The V stands for Ventilation and means that it takes air from the outside in to the inside. And AC dosent do that. I can't give any better anwer on that, maybe someone else.
There is no difference between AC AND DC chockes
HVDC is a programmer for heating and air. The HVAC is the installer for heating and air. I have a license for both of them,
Ad is higher than ac
2 Pipes
There is no difference in the cables. The only difference is the type of electrical power being transmitted. AC or DC applications use the same wires.
638a are the steamfitters and 638b are the hvac technicians.
The difference AC and DC grounding is that AC is alternate current and DC is direct current. Grounding for both AC and DC is the same.
AC rises with respect to time but DC is steady.
HVAC Technician or HVAC Tech or HVAC Mechanic or The AC Guy
The phase difference between the current through the resistor and inductor in an AC circuit is 90 degrees.