Anansi
I have a system where pipes run 24l L/min of water @60 degrees through 3 manifolds and those manifolds distribute the water over 8 heat exchangers. Every heat exchanger requires 1 L/min, and has a resistance of about 1.333 KPa per heat exchanger at that flow (2 meter @ 9mm diameter + 2 connectors with CV=0.85). Every manifold has a resistance of 1.85 KPa (2 connectors with CV=5.77, resistance of tube is negligible here). The main distribution tubes are 4 meters long at 20mm and carry the full load of 24 L/min that should add up to about 3.53 KPa.
As far as I can tell I need to only count the resistance of all these parts once because they are parallel so the total pressure drop over the system is 1.333+1.85+3.53=6.71 KPa. But its rather important to select the right pump for the system so would really like a verification for this.
As far as I can tell I need to only count the resistance of all these parts once because they are parallel so the total pressure drop over the system is 1.333+1.85+3.53=6.71 KPa. But its rather important to select the right pump for the system so would really like a verification for this.