Memo
To:
Daniel Pope
From:
Josh Stratton
Date:
2/9/2016
Re:
Steam Surface Condenser Design
Steam Surface Condenser Design
A condenser of a steam power plant with a thermal efficiency of 40%
that generates 10 MW of net electric power is to be designed. The
steam enters the condenser as saturated vapor at 10 kPa and is to be
condensed outside horizontal tubes through which cooling water from
the St. Louis River flows. The temperature rise of the cooling water is
limited to 8 degree Celsius and the velocity of the cooling water pipes
is limited to 6 m/s. A schematic, to the right, shows the connections of
the steam condenser being designed.
The cooling water was taken from the mouth of the St. Louis River,
which is at an average 4 degrees Celsius, year around [1]. The pipe
material was chosen to be series “L” copper with an outside diameter
of ¾” [2]. The size of the copper tubing was chosen from comparing
the pumping power and the volume required for a rectangular cross
sectional arrangement of the cooling pipes, described in Appendix 3.
The arrangement of tubes was determined to be 19 vertical tubes and
32 horizontal tubes with a spacing of ¾”, to provide a realistic 4 ft. H x 2.5 ft. W x 10.5 ft. L design.
1
Steam In
Ø .75in.
.75in.
.75in.
N=19
N=32
Water
Out
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