In an ohmic heater, the inside diameter of the pipe is 0.07 m and it is 2 m long. The applied voltage is 15,000 V. A liquid food is being pumped through the heater at 0.2 kg/s with an inlet...

In an ohmic heater, the inside diameter of the pipe is 0.07 m and it is 2 m long. The applied voltage is 15,000 V. A liquid food is being pumped through the heater at 0.2 kg/s with an inlet temperature of 30°C. The overall heat transfer coeffi cient based on the inside pipe area is 200 W/ m
²
°C. The specific heat of the liquid food is 4000 J/kg°C. The surrounding temperature of the air is 25°C. Assume that the properties of the liquid food are similar to 0.1M Sodium Phosphate solution. Determine the exit temperature of the liquid food.