The principle of assisted circulation and the reasons for its adoption for large high-pressure boilers. The process of development that has taken place in the designs for High Marnham 200 MW, Thorpe Marsh 550 MW, and West Burton 500 MW boiler units. Improvements in compactness achieved without sacrifice in operating efficiency. (Reference is made to the firing system and the heat-recovery plant.) The use of flow models. Operating experience with the High Marnham units. Some subsequent modifications. Possible future developments in the light of foreseeable limitations.
HunterA. T.‘Boiler types: natural, controlled and forced circulation’, Bulletin de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore195871 (No. 6), 501. (Paper presented to International Congress for the Study of Modern Thermal and Hydroelectric Plants, held at Liège in May 1958.).
3.
MendlerO. J.RathbunA. S.Van HuffN. E.WeissA.Natural-circulation tests with water at 800 to 2000 psia under nonboiling, local boiling and bulk boiling conditions1961 A.S.M.E. Paper No. 60-HT-36.
4.
LevyS.BerkjordE. S.Hydraulic instability in a natural circulation loop with net steam generation at 1000 psia1960 A.S.M.E. Paper No. 60-HT-27.
‘Central station design survey’, Power1962106 (No. 10), 140.
7.
ProfosP.‘Stability of water distribution in forced-circulation heating surfaces’, Sulzer tech. Rev.1947 (No. 1), 1.
8.
de Bortoli et al. Forced-convection heat transfer burn-out studies for water in rectangular channels and round tubes1958 WAPD-188.
9.
‘Recent observations and knowledge concerning the behaviour of ferritic and austenitic boiler steels’, Von I. Class. Mitt. Ver. Grossk.1962 No. 80, 326.
