Pump Formulas Imperial and SI Units
Pump Torque Imperial Units SI Units = torque, ftlbf P = pump power, hp N = pump speed, rpm = torque, Nm P = pump power, kW N = pump speed, rpm Temperature Rise Imperial Units SI Units T = temperature rise, #176;F H = total head, ft = pump efficiency, decimal U = fluid specific heat, BTU/(lbm#176;F) T = temperature rise, #176;C or #176;K