Please answer these questions.

DEPARTMENT OF BIOMEDICAL ENGINEERING BMEN 406: TRANSPORT PROCESSES IN LIVING SYSTEMS (2 CREDITS) STRUCTIONS: TTEMPT ALL QUESTIONS IME ALLOWED: TWO (2) HOURS 1. During surgery, the core body temperature of a patient was lowered to 28C and maintained to slow down metabolic activity using a cooling pad that is kept at 20C. The cooling pad has a thickness of 3cm with a thermal conductivity of 0.18Wm1K1, a. Assuming the skin and core body temperature are the same, i. Calculate the heat flux at steady state at the pad-skin interface ( 5 marks) ii. State the type of heat transfer taking place (l mark) b. After the surgery, the core body temperature is brought to normal using a heating pad. Taking a 50cm3 volume of tissue perfused by warmed (37C) arterial blood flowing at 50mLs1, and assuming that the tissue temperature and blood in the veins are at a temperature of 28C, i. Briefly explain what each term in the Penne's bioheat equation represents ( 4 marks) ii. Determine the heat generation rate per unit tissue volume. Take the blood flow rate in the veins to be 25mLs1 (6 marks) iii. State any two assumptions made for the Penne's bioheat equation (4 marks) DEPARTMENT OF BIOMEDICAL ENGINEERING BMEN 406: TRANSPORT PROCESSES IN LIVING SYSTEMS (2 CREDITS) STRUCTIONS: TTEMPT ALL QUESTIONS IME ALLOWED: TWO (2) HOURS 1. During surgery, the core body temperature of a patient was lowered to 28C and maintained to slow down metabolic activity using a cooling pad that is kept at 20C. The cooling pad has a thickness of 3cm with a thermal conductivity of 0.18Wm1K1, a. Assuming the skin and core body temperature are the same, i. Calculate the heat flux at steady state at the pad-skin interface ( 5 marks) ii. State the type of heat transfer taking place (l mark) b. After the surgery, the core body temperature is brought to normal using a heating pad. Taking a 50cm3 volume of tissue perfused by warmed (37C) arterial blood flowing at 50mLs1, and assuming that the tissue temperature and blood in the veins are at a temperature of 28C, i. Briefly explain what each term in the Penne's bioheat equation represents ( 4 marks) ii. Determine the heat generation rate per unit tissue volume. Take the blood flow rate in the veins to be 25mLs1 (6 marks) iii. State any two assumptions made for the Penne's bioheat equation (4 marks)