At a section where the diameter is \(4 \mathrm{in}\)., methane flows with a velocity of \(50 \mathrm{ft} / \mathrm{sec}\) and a pressure of \(85 \mathrm{psia}\). At a downstream section, where the diameter has increased to 6 in., the pressure is 45 psia. Assuming the flow to be isothermal, compute the heat transfer between the two locations.