Blood for transfusion is warmed with a heater in a well-mixed reservoir to a steady- state value of 37c. air temperature surrounding the reservoir is 20c. the overall 622 9 macroscopic approach to bioheat transport heat transfer coefficient from reservoir walls to air is 100 w m2 k1 , the reservoir volume is 1 103 m3 , and the surface area of the reservoir is 0.01 m2 . (a) what is the heat transfer rate from the heater in watts? (b) at time t 1⁄4 0, the heater is turned off. how long will it take for the temperature to reach 30c?
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