Chemical engineering Compare your answer B with your answer

Chemical engineering

Compare your answer B with your answer to question 1, part A. Discuss briefly. Will the fluid velocity of 1.0 cm/min in the thermal boundary layer be enhanced or diminished due to density differences? A cubic heater is placed into a large tank filled with glycerin. Its surfaces are squares with sides of 34 cm and the cube is oriented parallel to the bottom surface of the tank. It is submerged in the glycerin but not touching the bottom of the tank. The glycerin has a bulk fluid temperature of 12 degreeC and zero bulk fluid velocity. The surfaces of the cube-shaped heater are maintained at 62 degreeC. What is the total rate of heat transfer from the cube to the glycerin? An electric plate is maintained with a surface temperature of 122 degreeC and is used to boil water. The

Solution

h for glycerine =.285 W/m K A= 6*34*34/10000=.6936m^2

Total Rate of heat transfer = h*A(62-12) W = 9.8838W