冷风渗透负荷计算.xls

p wn= 1.386 kg*/m3 Cp= 1 kj/(kg*℃) Q=0.28c P tn= 20 ℃ b= 0.67 L= twn= -19 ℃ △cF 0.7 Lo =a(wn 2 11= 5.6 m tn'= 18 ℃ m=c △c(r a1= 0.1 m3/(m*h*Pab) L= 3.910295 m/h Ch=0.3h04 (h Vo 4.5 m/s 10= 0.587084 m3/(m*h) C=70* △c Cr= 0.8 m= 1.295448 n= 0.2 C= 2.222776 h= 2.1 m Ch= 0.403654 h= 6.65 m Q= 59.20396 W nL(t-twn) 1 15C)Ch -h)th-t wn v3h0.4 273t ...