Question: A Blood Warmer, Shown In The Figure Below, Used To Warm Blood Before It Is Administered To A Patient, Is Initially Filled With 1 Liter Of Blood At A Temperature Of 30 C. As Soon As The Electric Heater Is Turned On, The Blood At 30 C Is 10 L/Min. It Enters The Heater With A Volumetric Flow Rate And Leaves The Heater With The Same Volumetric Flow Rate. A blood warmer, shown in the figure below, used to warm blood before it is administered to a patient, is initially filled with 1 liter of blood at a temperature of 30 C. As soon as the electric heater is turned on, the blood at 30 C is 10 L/min. It enters the heater with a volumetric flow rate and leaves the heater with the same volumetric flow rate. The amount of heat transferred during the heating process is 6 kW, and the mixer in the heater does a work of 0.5 kW to the system. Calculate the time required for the blood temperature in the outlet flow to reach the body temperature of 37 C. The heat loss to the environment and the kinetic and potential energy changes are negligible and the system is mixed very well. Cv,blood Cp,blood = 4.18 J/g.K bload = 1.056 g/cm.