Pressure drop in an ion-exchange bedE. A horizontal water purification unit consists of a hollow cylinder that is packed with ion-exchange resin particles. Tests with water flowing through the unit...

Pressure drop in an ion-exchange bed—E. A horizontal water purification unit consists of a hollow cylinder that is packed with ion-exchange resin particles. Tests with water flowing through the unit gave the following results: Flow rate Q (gallons/hr): 10.0 20.0 Pressure drop, −Δp (psi): 4.0 10.0 If the available pump limits the pressure drop over the unit to a maximum of 54 psi, what is the maximum flow rate of water that can be pumped through it?