Question

Water is pumped from a storage tank (tank 1) to another tank (2) which is 40 ft above tank. Calculate the potential energy increase with each lb of water pumped from tank 1 to tank2.

(a) 119.544 J/kg

(b) 120.678 J/kg

(c) 122.500 J/kg

(d) 190.600 J/kg

The question was asked in my homework.

This interesting question is from Energy Balance Numericals Without Reactions in portion Energy Balance of Bioprocess Engineering

Answer 1

The correct option is (a) 119.544 J/kg

The explanation is: PE increase per lb = Ep / m = gh = (9.806 m/s^2) (40 m/3.2808) = 119.54 m^2/s^2 = 119.544 J/kg.