the tube length is 1m. SteamD.DeLiquid water1 kg/s of water at 20°C enters an annular section formed by an outer tube of diameter De = 100 mm and an inner tube of external diameter D. = 25 mm [internal diameter D; = 21 mm; thermal conductivity of 40 W/(K m)].The length of the double tube is ## m. Saturated steam flows through the inner tube at 100°C with a convection coefficient of 5000 W/(m2 K). The external surface of the heat exchanger is well insulated, avoiding losses tothe environment. At what temperature does the water come out?Prandtl number Pr =Reynolds number Rep =Friction coefficient cf =Nusselt number Nup =Convection coefficient h, =W/(m² K)Global coefficient U, =W/(m² K)Outlet temperature TE =K

Given: Mass flow rate of water m˙= 1kg/s Inlet temperature of water Tw,i=20oC Diameter of outer…

Answered: D. D. Steam Liquid water 1 kg/s of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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the tube length is 1m.

Steam
D.De
Liquid water
1 kg/s of water at 20°C enters an annular section formed by an outer tube of diameter De = 100 mm and an inner tube of external diameter D. = 25 mm [internal diameter D; = 21 mm; thermal conductivity of 40 W/(K m)].
The length of the double tube is ## m. Saturated steam flows through the inner tube at 100°C with a convection coefficient of 5000 W/(m2 K). The external surface of the heat exchanger is well insulated, avoiding losses to
the environment. At what temperature does the water come out?
Prandtl number Pr =
Reynolds number Rep =
Friction coefficient cf =
Nusselt number Nup =
Convection coefficient h, =
W/(m² K)
Global coefficient U, =
W/(m² K)
Outlet temperature TE =
K

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Thank you for this answer. I don't quite understand step 4, 5 and 6 because the operation is not really readable : could you write it with parenthesis and clear opeartion signs (+, x, /, ^) ?

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