- #1
roldy
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I've been tasked to see if I could determine the number of chill rollers needed to cool down glue being extruded onto a fabric. I'm not sure if my method is valid. The roller has wall thickness d with contact area A. Water inside chill roller is at T1 and glue is at T2.
1) Calculate the rate of heat transfer of the first roller
2) Use the rate of heat transfer to calculate T2t, temperature of glue after time t of roller contact
3) Find ΔT of the glue of the first roller.
4) Use ΔT to determine number of chill rollers to be used. Round answer accordingly
1) Q/t = kA(T2-T1)/d
2) T2t = Qd/(tkA) + T1
3) ΔT = T2t - T2
4) n = (Treq - T2)/ΔT
1) Calculate the rate of heat transfer of the first roller
2) Use the rate of heat transfer to calculate T2t, temperature of glue after time t of roller contact
3) Find ΔT of the glue of the first roller.
4) Use ΔT to determine number of chill rollers to be used. Round answer accordingly
1) Q/t = kA(T2-T1)/d
2) T2t = Qd/(tkA) + T1
3) ΔT = T2t - T2
4) n = (Treq - T2)/ΔT