Page 92 - Introduction to Marine Engineering

Boilers 79

mtcn wtu
WSEftS \
\

PART SECTIONAL PLAN
Figure 4.5 Foster Wheeler radiant-type boiler

is flowing parallel to the gas. The furnace gases finally pass over a
conventional economiser on their way to the funnel.
Reheat boilers are used with reheat arranged turbine systems. Steam
after expansion in the high-pressure turbine is returned to a reheater in
the boiler. Here the steam energy content is raised before it is supplied
to the low-pressure turbine. Reheat boilers are based on boiler designs
such as the 'D' type or the radiant type.