Download - Piping Flow
Transcript
Balanced flow is critical to the efficiency of the system
Use Reverse/Return piping or Flow Balancing Valves
Balanced Flow
Keep the return line the shortest run of pipe.Reverse return piping allows balance flow through the collector and array
Supply
Return
Drain back systems require careful slop of pipingto allow for draining the complete array and exposed pipe
Pump Sizing
• Drain Back – Friction loss and Head
• High Head Pump
• Direct Systems and Indirect Pressurized Glycol– Friction loss
• Circulator
Pump Sizing
• Pumps/Circulators in Parallel– Doubles Flow
• Pumps/Circulators in series– Doubles the Head
TABLE 6. Pressure Loss of Water Due to Friction in Types K, L and M Copper Tube (psi per linear foot