Water is heated in a double-pipe heat exchanger. Water passes through the inner tube, and steam passes through the annulus. The steam is saturated and condenses at a temperature of 115.6°C on the outer surface of the inner tube. The water is to be heated from an inlet temperature of 21.1°C to an outlet temperature of 60°C. The inner tube is 1 standard type M copper tubing = 0.2680 m). The exchanger is (D, 6.10 m long. Calculate the average convection coefficient (in W/m-K) if inner the mass flow rate is 40.82 kg/min. Aasalar-duid (vapor) inlt Tabefuid Tube-fluid ialet outlet Aanular-laid (condensate) outlet

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8th Edition
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Author:Kreith, Frank; Manglik, Raj M.
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Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.48P
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Water is heated in a double-pipe
heat exchanger. Water passes
through the inner tube, and steam
passes through the annulus. The
steam is saturated and condenses
at a temperature of 115.6°C on the
outer surface of the inner tube. The
water is to be heated from an inlet
temperature of 21.1°C to an outlet
temperature of 60°C. The inner tube
is 1 standard type M copper tubing
= 0.2680 m). The exchanger is
(D,
6.10 m long. Calculate the average
convection coefficient (in W/m¯-K) if
inner
the mass flow rate is 40.82 kg/min.
Annular-luid (vapor) inlet
Tube-fluid
inlet
Tube-fluid
outlet
Annular-fluid
(condensate) outlet
Answers:
Analysis:
convection
°C
m
Type of flow:
&
at constant
Nu =
W/m²-K
%3D
II
>
>
Transcribed Image Text:Water is heated in a double-pipe heat exchanger. Water passes through the inner tube, and steam passes through the annulus. The steam is saturated and condenses at a temperature of 115.6°C on the outer surface of the inner tube. The water is to be heated from an inlet temperature of 21.1°C to an outlet temperature of 60°C. The inner tube is 1 standard type M copper tubing = 0.2680 m). The exchanger is (D, 6.10 m long. Calculate the average convection coefficient (in W/m¯-K) if inner the mass flow rate is 40.82 kg/min. Annular-luid (vapor) inlet Tube-fluid inlet Tube-fluid outlet Annular-fluid (condensate) outlet Answers: Analysis: convection °C m Type of flow: & at constant Nu = W/m²-K %3D II > >
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