Circuit Setter Balancing Valve Software

You may find it difficult to get good comparative data on a diversity of cooling coils. A reasonable first guess might be 10 psid of chilled water through each coil. The piping to and from the coils can be analyzed by pressure/flow equations for each segment of pipe between the coils, and by the C_v of each valve in the system. A full explanation would be lengthy, I'm afraid.

I'm not particularly fond of circuit setter valves, anyway. I believe they introduce extraneous pressure drops in systems as a means of correcting for imprecise design. This is not always true, I admit, especially if the various differ severely in their pressure drop characteristics.

Did you mean 50 different coils instead of 50 separate coils? If it's really 50 different coils, it's either an academic problem, or the engineer is an idiot.

Most manufacturers can supply pressure flow curves for their various coils. Pipes are standard for a variety of materials and sizes.

In response to your question about information, almost any textbook on fluid flow will have it.

This might be a good source: http://www.bellgossett.com/WhatsNew/lit29Apr05.htm

Your easiest way to assure full control of maximum flow at each coil is to install a device called a flow regulator that is manufactured by Griswold Controls in Irvine, CA, USA.

These devices are available preset for fixed maximum flow (usually within 0.2-0.5 GPM for small valves and within 1-2 GPM for larger valves) over a very wide range of inlet pressures so you will only have to allow for the maximum piping pressure drop, the coil PD, the control valve PD and the recommended pressure allowance provided by the regulator manufacturer when you select your pump design pressure.