Maurice Tutor

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Category > Management Posted 04 Apr 2018 My Price 6.00

watermelon’s temperature

A watermelon is taken out of the refrigerator at a uniform temperature of 5°C and is exposed to 27°C air. Assume that the watermelon can be approximated as a sphere and the temperature of the watermelon is uniform. The estimated parameters are the density

ρ = 120 kg/m3, diameter D = 40 cm, specific heat capacity c = 4200 J/(kg·°C), and heat transfer coefficient of the watermelon h = 15 W/(m2·°C).

a. Derive the differential equation relating the watermelon’s temperature T(t) and the air temperature. b. Using the differential equation obtained in Part (a), construct a Simulink block diagram and find the temperature of the watermelon.

X             c. Build a Simscape model of the system.

d. Based on the simulation results obtained in Parts (b) and (c), how long will it take before the watermelon is warmed up to 20°C?

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Maurice Tutor
(5)
Status NEW Posted 04 Apr 2018 07:04 PM My Price 6.00

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