Heat is to be removed from a reaction vessel operating at 75°c by supplying water at 27°c and 0.12 kg/s through a thin-walled tube of 15-mm diameter. the convection coefficient between the tube outer surface and the fluid in the vessel is 3000 w/m2·k. (a) if the outlet water temperature cannot exceed 42°c, what is the maximum rate of heat transfer from the vessel, in °c? qmax= w (b) what tube length is required, in m, to accomplish the heat transfer rate of part (a)? l= m