HVAC

....then do a pressure drop calculation for the piping, given the properties of the fluids involved.

If you are going to condition with cold water, the data and methods to perform the calculations are almost everywhere. It is the usual piping calculation. Try White's Fluid Mechanics. You shouldn't have problems with that.

If you are designing an HVAC system using a refrigerant fluid like R 404, then try the small Stoecker (Refrigeration and Air Conditioning). Most people would advise you to take a look at ASHRAE's handbook, but I personally hate it. It is too difficult to understand the methods for piping calculations, if not impossible.

Hydraulic Handbook from the Hydraulic Institute is the best printed, but there are websites where you just punch in the numbers and the solution pops up. I imagine if you have no experience you may not feel comfortable with those results, but I find them accurate.

Dude; Uruguay? You joined to meet women? Perfect English diction coupled with an American/British sense of humor suggests either you are an ex patriot or you spent much time over here. What do you do in Uruguay?

JT

No, sorry, I am just a barbarian who fell in love with Rome. Here I sell agricultural machinery and try to graduate as Mechanical Engineer before the Second Coming. Now, if what you ask is 'Why' I am here, it is because I still haven't got the four thousand dollars I need to move to Canada.

I imagine that you are talking about the chilled water side and not the condenser water and that the chilled water flow rates are known.

1.you need to obtain the pressure drops (PD) at the appropriate flow rates in ft head of ALL the cooling coils in the system.

2. you need the pressure drops across the isolating valves and "in-line" and+ controller valves or three way valves which ever are selected.

3. ASHRAE will give you the piping sizes (if not in existance now) at the water flow rates you select and it will give you a pressure drop per ft or 100ft in ft head.

4. take the highest pressure drop figure in coil/valves(1 & 2 above) add it to the highest piping PD, add the PD's from all other parts (such as in line filters etc:-) add the chiller section PD. The sum of all these items is your pump head!

PHILIPLYON

YOU ARE RIGHT -