Question

1. Consider a chemical reactor that has a constant heat release. In this reactor, there are 1-m long cylindrical pipes (L) have inner diameter of 25 mm (D) and Helium gas enters each of the pipe at 400K (T_i) and exits at 800K (T_e) that is used to cool the reactor at atmospheric pressure and has mass flow rate as 0.02 kg/s. Determine;

(Helium properties at T_f; ρ=0.08 kg/m³; C_p=5200 J/kg.K; µ= 32*10^-6 kg.m/s ; k=0.23 W/m.K; Pr= 0.72)

1. the surface temperature (T_s) of the pipe which is constant in this chemical reaction.
2. the rate of heat loss from the pipe (W),

Answer 1

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