836201815 301. 2. 3.4. 5. 6. 10 401. Re Fo Bi Nu Pr2.3. x y zdx dy dzv v v4. 801. 10 1.5m/s 25 mm 10015 8550 =0.566 10-6m2/s Pr=3.54 =0.648W/(m K)2. 15 0.4m/s 2060 0.4736 105Pa 1000kg13740 W/(m2K) 25mm 1.5mm=109 W/(m K)3. 15 40 2407kJ/kg18kg 25 3521800W/(m2K)1234. 10(2t/k)x ae ,t/ky be ,t/kz ce , k5. 15 h=0.8m =40L=5m d=0.0125m =1000kg/m36. (15 ) 900 kg/m3A 40mmB 65m25m80kPa 40kPa30m =0.0045m3/hkPa3m 5m215fh u g=9.81m/s2
