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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

ANALYSIS OF WARM UP OF LARGE STEAM LINES

Get access (open in a dialog) DOI: 10.1615/IHTC7.2450
pages 497-502

Abstract

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.