ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
ANALYSIS OF WARM UP OF LARGE STEAM LINES
Sinopsis
To deliver 5 × 106 kg/h of medium pressure (1380 kPa) process steam from a Nuclear Generating Station to a Heavy Water Plant, Ontario Hydro has designed and built two 1.68 m steam lines, each
2.5 km long. Since no previous experience with the
start up and operation of such large and long steam
lines was available, a combined theoretical and
experimental study to assist in the commissioning
of these lines was undertaken. Mathematical models
for predicting the velocity of the steam front, the
thermal stresses due to thermal shock and also the
steam pressure in the line were developed. The
findings of the theoretical study were used as a
guideline in the actual start up of the lines.
Although some phenomena such as the extent of
stratification of steam in the line was not considered
in the analysis, the basic features of the
experimental results were adequately described by
the theoretical models.