- Pipe velocities much in excess of 10 ftls should be avoided.
- Limit the number of sizes (ANSI schedule 40) to 4 (buildings A and B, building C, building D, and the supply/return loop to the chiller and main pump).
- Provide valves to isolate each pump. (Note that items 1 and 2 may do the job.)
Accomplish a preliminary system design. At least the following should be specified for the system:
- Layout of the network
(a) actual physical layout
(b) “Z” arrangement for Hardy-Cross input
- Lengths and sizes of all pipes required
- Number and type of valves and fittings
- Increases in head and power delivered to the fluid for all required pumps
- List of materials (diameters, lengths, valves, … ) required