Example 9.7-1 Error in Thermocouple Measurement
> restart; > T1:=500*F; Tw:=350*F; h:=120*Btu/(hr*ft^2*F); k:=60*Btu/(hr*ft*F);B:=0.08*inch; L:=0.2*ft; > N:=sqrt(h*L^2/(k*B)); eq. 9.7-8 > inch:=ft/12.; > N; > eq:=(T1-Ta)/(Tw-Ta)=cosh(0)/cosh(N); > solve(eq,Ta);The text reproted 510F