Performance characterization of isolation condenser of SBWR Page: 4 of 28
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
thermal conditions inside the tubes. The system IC, operating directly with the RPV is being
modeled in this study. Figure 1 shows a simplified sketch of the IC system and the associated
flow paths. The geometry of the model used in this analysis has been presented in Figure 2 .
The assumptions behind the geometric and thermodynamic modeling of the ICs are as follows:
IC Modeling Assumptions:
1. The IC is modeled as a single control volume with necessary boundary conditions.
2. Transient mass and energy balance equations can be used to solve for pressure and
enthalpy within the control volume. Momentum change in the IC is negligible .
3. The steam flow rate is solved for using of the momentum equation applied to the steam
supply line, with pressure boundary condition satisfying the IC and the RPV.
4. The condensate flow rate is given by a solution of the momentum equation applied to the
condensate return line connected to the IC and the RPV.
5. Steam entering the IC is at a saturated vapor condition at the inlet pressure.
6. Liquid leaving the IC is at a subcooled or saturated condition depending on the heat
7. The initial level of liquid in the IC is a variable depending on the existing two phase
8. For steady boundary conditions the steam supply and condensate return pressures are
assumed to remain constant.
IC Pool Assumptions:
1. The initial pool temperature is at 32 C.
2. Pool Energy balance is used to calculate the increase in pool temperature.
Heat Transfer Assumptions:
There are three significant heat transfer mechanisms of importance in this analysis, these
are as illustrated in Figure 3 :
1. Turbulent film condensation heat transfer inside the IC tubes occur in n parallel tubes.
2. Conduction heat transfer occurs through the tube wall thickness.
3. Natural Convection and pool boiling heat transfer occur between the tube external
surfaces and the pool liquid.
Here’s what’s next.
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Khan, H.J. & Rohatgi, U.S. Performance characterization of isolation condenser of SBWR, article, January 1, 1992; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1187866/m1/4/: accessed April 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.