河北理工学院：《化工原理》课程总结_someformulations

H H hYw(H,-H) (C, +C,H)t+Y 224(273+1),224(273+t) Vu=v+kh 29273 18 273 Gc=G1(1-W1)=G2(1-W2)W=Gc×(X1-X2)=L(H2-H1) L 1-10)=LCg+C,H1)(t1-to) GcM(t q=qp +ap=qa +qM +qL q 蒸发水分及物料升温朋的热量q+q 干燥器的热效率=所加入的总热量 G-G q=(o +Cwt)Cy x W do dw Gcdx U Adt AdT AdT - a(t-tw)U=KH(Hw-H GdX Adτ ∫(X-X)≈K(X-X) ∫dz G dX T AU AU (Xl-Xc) dX Ⅹ-X dτ U AK X-X* (Xc-X*) AU X-X

( ) Pw - = M P M P H a w w % P P Φ w = ×100 H as as C γ ( H t t - H) = - w a γ ( H t t w w K - H) = - h w I = (Cg + CvH )t +γ 0H H . ( t ) . ( t ) VH Vg VwH 273 273 + × 18 22 4 + 273 273 + 29 22 4 = + = = 1- W ) = G (1- W ) 1 1 2 2 G G ( C = × - X ) = L(H - H ) X1 2 2 1 W G ( C 2 H1 - = H W L = -I ) = L(C + C H )(t - t ) 1 0 g v 1 1 0 Q L( I p q = qP + qD = qa + qM + qL W G C (t q m m M - t ) = 2 2 m1 q q' q η + M = = 所加入的总热量 蒸发水分及物料升温所用的热量 干燥器的热效率 q' = (γ0 +CW t2 )Ci tW C C G - G = G X G -G = G C W Adτ τ dW U Ad G dx = = - C a(t ) Adτ r r dQ U w w - tW 1 = = U = KH ( HW - H) ∫ ∫ 1 1 C 0 G = - XC X C dX AU dτ = 1 - X ) 1 X C ( AU G τ C C ∫ τ ∫ XC X x C X dX AK G d 2 - X* = 2 0 ) X (U UC X - X* - X* ≈ C 降 - X* - X*) - X* = 2 2 X X ln AU G ( X τ C C C C = - X*) K (X- X*) Ad G dX = - x C ≈ τ U f ( X