Author: W. R. GambillPublisher:
ISBN:
Category : Heat engineering
Languages : en
Pages : 64
Book Description
Burnout Heat Fluxes for Low-pressure Water in Natural Circulation
Author: W. R. GambillPublisher:
ISBN:
Category : Heat engineering
Languages : en
Pages : 64
Book Description
BURNOUT HEAT FLUXES FOR LOW-PRESSURE WATER IN NATURAL CIRCULATION.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Twenty-nine experimental determinations of burn-out heat flux were made with water flowing by natural circulaion through electrically heated vertical tubes with and without internal twisted tapes and through rectangular cross sections of three aspect ratios. Heated lengths varied from 10 to 33 inches, system pressure at the testsection flow exit from 14.7 to 26.3 psia, inlet subcooling from 36 to 170 deg F, and burn-out heat flux from 13,000 to 218,500 Btu/hr/sq ft. Tests were made with both unrestricted and restricted return flow paths. Three correlations were developed for predicting natural-circulation burn-out heat fluxes for such conditions. Two are useful for rapid estimation but the third involves a more fundamental assessment of the coolant mass velocity at burn-out by a graphical matching of the heat flux that a given flow rate can sustain to the heat flux that will produce that flow rate. For all the data, this approach gave average and maximum deviations of 15 and 38%, respectively. It was found that use of a slip ratio of unity is adequate for burnout prediction, and the reasons for this are discussed in detail. The small burn-out penalty incurred by a substantial restriction of return flow path, experimentally observed, is in complete accord with the theoretical model. (auth).
Analysis of Heat Transfer, Burnout, Pressure Drop and Density Data for High-pressure Water
Author: W. H. JensPublisher:
ISBN:
Category : Heat exchangers
Languages : en
Pages : 146
Book Description
HFIR Heat-transfer Studies of Turbulent Water Flow in Thin Rectangular Channels
Author: W. R. GambillPublisher:
ISBN:
Category : Channels (Hydraulic engineering)
Languages : en
Pages : 80
Book Description
Power Reactor Technology
Author: Experimental Study on Natural-convection Boiling Burnout in an Annulus. [PWR ; BWR].
![Experimental Study on Natural-convection Boiling Burnout in an Annulus. [PWR ; BWR]. PDF](https://books.google.com/books/content/images/frontcover/zviBAQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
An experimental study was performed on burnout heat flux at low flow rates for low-pressure steam-water upward flow in an annulus. The data indicated that a premature burnout occurred due to flow-regime transition from churn-turbulent to annular flow. It is shown that the burnout observed in the experiment is essentially a flooding-limited burnout and the burnout heat flux can be well reproduced by a nondimensional correlation derived from the previously obtained criterion for flow-regime transition. It is also shown that the conventional correlations for burnout heat flux at low mass velocities agree well with the data on circulation and entrainment-limited burnout.
Nuclear Science Abstracts
Author: Heavy Water Moderated Power Reactor Plant
Author: Publisher:
ISBN:
Category : Heavy water reactors
Languages : en
Pages : 676
Book Description
Critical Heat Flux for Flow Boiling of Water at Low Pressure on Smooth and Micro-Structured Zircaloy Tube Surfaces (KIT Scientific Reports ; 7627)
Author: Christoph HaasPublisher: KIT Scientific Publishing
ISBN: 3866449232
Category :
Languages : en
Pages : 186
Book Description
Heat Transfer and Burnout to Water at High Subcritical Pressures
Author: Harold M. EpsteinPublisher:
ISBN:
Category : Heat
Languages : en
Pages : 34
Book Description