Question

calculate the time it takes to cool the following cylinder from -4C to -18C, the cylinder is 0.089meters in diameter, 0.127 m tall, the combined latent and specific heat value is 248 kJ/kg, the weight of the cylinder is 0.35kg, the heat transfer coefficient is 0.993 w/mk, the cooling medium is air at a velocity of 2 m/s at -29C. Is this enough info? The process is hardening freshly made ice cream. The faster it hardens, the better the product.

Answer 1