Analysis of Pressure-drop Function in Rankine Space Power Boilers with Discussion of Flow Maldistribution Implications |
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... Plug Geometry Effect of Heat- Flux Distribution on Pressure - Drop Function CONCLUDING REMARKS . . APPENDICES A - SYMBOLS . . . 19 21 21 22 24 . . . . . . . . . . B DIGITAL PROGRAM FOR BOILER MODEL WITH CHOKED- - 26 NOZZLE DISCHARGE AND ...
... Plug Geometry Effect of Heat- Flux Distribution on Pressure - Drop Function CONCLUDING REMARKS . . APPENDICES A - SYMBOLS . . . 19 21 21 22 24 . . . . . . . . . . B DIGITAL PROGRAM FOR BOILER MODEL WITH CHOKED- - 26 NOZZLE DISCHARGE AND ...
Page 2
... flow among the parallel tubes . A particularly serious form of maldistribution , with attendant liquid carryover to ... plug and the spiral wire shown are flow swirl devices intended to promote heat transfer and phase separation 2 ...
... flow among the parallel tubes . A particularly serious form of maldistribution , with attendant liquid carryover to ... plug and the spiral wire shown are flow swirl devices intended to promote heat transfer and phase separation 2 ...
Page 3
... flow , and a constant friction factor was deter- mined for a vapor quality of 1. The formulation of a pressure ... plug . The derivative dP / dl was taken with respect to the axial distance along the tube so that in the plug region a ...
... flow , and a constant friction factor was deter- mined for a vapor quality of 1. The formulation of a pressure ... plug . The derivative dP / dl was taken with respect to the axial distance along the tube so that in the plug region a ...
Page 6
... electrical or constant - temperature heat sources . Figure 2 shows a typical temperature and pressure profile in a ... plug and normally extends over a large part of the tube length . The working - fluid temperature in this region ...
... electrical or constant - temperature heat sources . Figure 2 shows a typical temperature and pressure profile in a ... plug and normally extends over a large part of the tube length . The working - fluid temperature in this region ...
Page 10
... The integral is divided into two parts corresponding to the plug and the swirl - wire or open - tube boiling regions as expressed in equation ( 22a ) : App = f 2 W 1pl , bww8p ୮ " 10 Integration of the Two-Phase Pressure-Drop Equation.
... The integral is divided into two parts corresponding to the plug and the swirl - wire or open - tube boiling regions as expressed in equation ( 22a ) : App = f 2 W 1pl , bww8p ୮ " 10 Integration of the Two-Phase Pressure-Drop Equation.
Common terms and phrases
analysis average heat-transfer coefficient boiler exit boiler tube boiling length boiling region boiling tube boundary condition calculated choked nozzle CONTINUE counterflow boiler DTSH EBOIL effect ELPH ELSH EPLUG equation ESHP EXIT QUALITY flow in plug flow maldistribution fraction of design gradients for vapor heat flux heat transfer heating fluid heating-fluid flow heating-fluid inlet temperature hydraulic diameter increase inlet temperature design input variables ITERATION KCMAX KQUAL KSPR lb/ft³ MERCURY BOILER multivalued multivalued function negative-slope region orifice overall average heat-transfer PLNTU plug insert plug length plug region preheat length preheat region pressure drop pressure gradient pressure-drop characteristic pressure-drop function PSAT psia rated flow Ratio of pressure region at design saturation pressure saturation temperature superheat length superheat region swirl-wire region temperature design value Tsat tube length vapor at rated vapor density variation water boiler WhCh WHDG working-fluid flow working-fluid inlet temperature ΔΡ