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      Find the average film coefficient heat transfer on the water side of single-pass steam condenser. The inner diameter of the tube is 23 mm and cooling water enters at 15°C and leaves at 25°C. The average water velocity is 2.1 m/s. Sketch the system and show the temperature distribution. Properties of water are given below. Find the heat transfer per metre length of the tube for the above case?

Temp.

(°C)

Density

(kg/m3)

Sp.heat

(kJ/kg-K)

Thermal Conductivity

 ´10–2 (W/m-K)

viscosity´102

(kg/hr)

Pr

v´106

(m2/s)

10

20

30

1000

1000

1000

4.192

4.183

4.174

57.498

59.780

61.345

496

361.892

288.650

9.52

7.02

5.42

1.306

1.006

0.805

                                          

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