Dehumidification system in
a steel box girder bridge is an effective
measure to reduce its life cycle cost (LCC)
because the cost of painting inside the girder
can be saved. In this study a system consisting
of a dehumidifi er and air ducts arranged
in the box girder is designed. Computational
fl uid dynamics (CFD) combined with transport
equations of moisture and temperature is applied
to the fl ow inside the box girder. The effectiveness
of this system is verifi ed because humidity
is uniformly removed without local concentration
of moisture.
