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Chemical EngineeringQ&A Library. Quenching Lead Shot in a Bath. Lead shot havingis at an initial temperature of 204.4°C. To quench the shot, it is added to a quenchingoil bath held at 32.2°C and falls to the bottom. The time of fall is 15 s. Assumingaverage convection coefficient of h 199 W/m2 K, what will be the temperature ofthe shot after the fall? For lead, p 11 370 kg/m and c, 0.138 kJ/kg K.an average diameter of 5.1 mman3Ср12WNSH3y dot mon Nraood totbyhasQuestion

Asked Sep 15, 2019

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Step 1

Given information in the question:

Considering the shape of lead shot as spherical

Average diameter (D) of lead shot = 5.1 mm

Initial temperature of lead shot before fall = 204.4^{0}C

Temperature of oil bath = 32.2^{0}C

Time of fall of lead shot = 15 s

Average convection coefficient (h) = 199 W/m^{2 }K

Density of lead shot material = 11370 kg/m^{3}

C_{P} = 0.138 kJ/kg K

Here, to find out the temperature of shot after fall

Step 2

Figure showing the situation in problem below:

Step 3

Assuming there is no temperature gradient throughout the lead shot...

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