During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled by 2.00ºC. What is the rate of heat transfer from this forced convection alone, assuming blood has the same specific heat as water and its density is 1050 kg/m

Question

Physics

Amirah Kim

9 June, 02:40

During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled by 2.00ºC. What is the rate of heat transfer from this forced convection alone, assuming blood has the same specific heat as water and its density is 1050 kg/m

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Answers (1)

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Rocco Lewis · Answer 1

-293 W

Explanation:

mass = density * volume = 1050 kg/m^3 * 0.002 m^3/min = 2.1 kg/min

Heat transferred = mass * specific heat capacity * change in temperature

= mcΔT

= 2.1 kg/min * 4186 J/kg-°C * - 2 °C

= - 17 581.2 kJ/min

= - 17 581.2 kJ/60s

= - 293 J/s

= - 293 W

The negative sign shows us that the heat is being given off the blood