Saturated water at mean temperature = 20 °C, flows inside a 25-mm-ID circular tube which is electrically heated to provide a constant heat flux over the entire length. The mass flow rate is 0.0295 kg/s. At a location 2.74 m downstream of the tube inlet, surface temperature is given to be 38 °C. Determine the total heat transfer rate for a 3.05 m - long tube.