Aliquid food is heated in a tubular heat exchanger. the temperature of the inside wall of the tube is 110°c. the internal diameter of the tube is 30 mm. the product flows at a rate of 0.5 kg/s. the liquid food initial temperature is 7°c. a. calculate the convective heat transfer coefficient. additional information. properties of the liquid food: specific heat = 3.7 kj/kg°c; thermal conductivity = 0.6 w/m°c; viscosity = 500 x 10 pa s; density = 1000 kg/m'. the product viscosity at 110 °c is 410 x 10 pas. b. the tubular heat exchanger is made of stainless steel (k = 19 w/m°c) of 2.0 cm internal diameter and 4 cm external diameter and it is covered by a layer of insulation (k = 0.14 w/m°c) of 3.5 cm thick. the outside ambient temperature is 22°c and the outside convective heat transfer coefficient is 114 w/(m² °c). calculate the overall heat transfer coefficient based on internal area and the heat loss from 1 m length of the pipe.