4ChEA group 1

1. ChE206 Group 1 4ChEA Costales, Rose Anne Tan, Maria Kimberly L. Katigbak, Donald Averilla, Gerard Lagmay, Marvin

3. 5 cm 5 cm T 2 = 38  C T 1 = 175  C K coating = 0.89+0.0015T q Required: q/L

4. D 1 = 0.05m D 2 = 0.05+2*0.05 = 0.15 m

6. Fire brick wall K= 1.12 W/mK Assume movable wall to be: Fire brick wall K= 1.12 W/mK Quartz window K= 0.07 W/mK Inside Temperature = 1100  C Outside Temperature = 121  C q

9. 25.4mm T 1 = 121.1  C T 1 = 26.7  C K steel= 45 W/(m-K) K insulation = 0.182 2” Sch 40: Outside Diameter = 2.375 in. Inside Diameter = 2.067 in. Thickness = 0.154 in.

10. D 1 = 2.375*0.0254 = 0.060325 m D 2 = 0.060325+2*0.0254 = 0.111125 m

11. Kg steam condensed/ hr = ? Latent heat of condensation of water = 2260 J/ g

14. Given: h=85.2 W(/m 2 -K) k= 374 W/ (m-K) Cp= 0.389 kJ/(kg-K) ρ = 8890 kg/m 3 Req’d: time in seconds for Tave=338.8K a.

15. b. h= 11.36 w/(m 2 -K)

16. c. Heat removed for a wire 1.0 m long Using formula given in Geankoplis