The rate at which heat is generated inside a chromatography column from friction of flowing liquid is power (watts, W = J/s) = volume flow rate (m3/s) × pressure drop (pascals, Pa = kg/[m ∙ s2]).
(a) Explain the analogy between heat generated in a chromatography column and heat generated in an electric circuit (power = current × voltage).
(b) At what rate (watts = J/s) is heat generated for a flow of 1 mL/min with a pressure difference of 3 500 bar between the inlet and outlet? You will need to convert mL/min to m3/s. Also 1 bar 105 Pa.