Transcript Diapositiva 1 - Royal Institute of Technology

L. Mansani
[email protected]
WP1.2
EFIT and XP-ADS Data
1
EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
Reference Documents
EFIT
 D1.24 Main Component Functional Sizing of the EFIT (under review
to make consistent with D1.26 and to include primary system
pressure losses, Lead volume, primary and target pumps
characteristics, DHR 1 & DHR 2, CFX evaluation, etc)
 D1.26 Main Component Assembly Drawings of EFIT (issued)
XT-ADS
 D1.27 & D1.28 Description and functional sizing of the Main
Components of the Reference Design of the XT-ADS (Draft)
 Main Component Assembly Drawings of EFIT (Draft)
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
p  0.5   v2
+1985
Primary coolant flow rates
[Kg/s]
total:
36000
across the core
- fuel assemblies:
33000
- fuel assemblies by-pass:
650
- dummy assemblies:
550
across the HX of the Target Unit: 1500
+1085
ΔPsg
P- head
1.37 bar
SG
SGU Midplane -1655
across each pump:
across each SG:
ΔPsg + ΔPc = P-head – ΔPp
+1473
9000
4500
ΔPc: fuel assemblies pressure drop
ΔPp: pump duct pressure drop, with
pump working
ΔPsg: SG pressure drop
P-head: head of the pump
ΔPsg
0.4 bar
mfr
4500 kg/s
ΔPp
0.27 bar
mfr
9000
kg/s
Core Midplane -5355
+406
Pump ΔPp= 0.5 ξρv2
ξ=2.2 pump in operation
ξ=3.7 pump free
ξ= 5.6 pump locked
ΔPc = 0.7bar
mfr = 33000 kg/s
ΔPc-in = 0.3 bar
ΔPc-out = 0.1 bar
ΔP-rods = 0.2bar
ΔPc-grids = 0.1 bar
Pressure Drops and Free Levels
in the EFIT Primary System
3
EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
+1985
+1473
+1085
M = 589 tons
(8 SGs & 4 PPs)
SG
v = 0.6 m/s
Total Mass of Lead = 5954 tons
Pump duct
v = 1.5 m/s
DHR M = 174 t
DHR
v = 0.15 m/s
+406
M = 855 tons
M = 3596 tons
M = 570 tons
Core
v = 1 m/s
Lead Mass Distribution and Average
Velocities in the EFIT Primary System
M = 170 tons
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
EFIT Primary Pump Characteristic
3
2.5
n= 200 rpm
Head [m]
2
1.5
1
0.5
2000
3000
4000
5000
6000
7000
8000
9000
10000 11000 12000 13000 14000
Mass flow rate [kg/s]
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
XT- ADS General Arrangement
6
EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
XT- ADS General Arrangement
7
EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
XT- ADS Primary Heat Exchanger
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
900
Mass Flow Rate,
Pressure Drops and
Free Levels In the
XT-ADS Primary
System
Mid Point
PHX
PHX (N° 4)
mfr/PHX: 1750 kg/s
ΔPPHX = 25000 Pa
v = 1 m/s
Core Pressure Drop
Mass flow rate: 4518 kg/s
Pressure drop: 90900 Pa
Core v = 1.5 m/s
Core Mass Flow Rates
Fuel A:
4518 kg/s
By Pass: 296 kg/s
Dummy A: 1258 kg/s
Target:
206 kg/s
Storage F: 90 kg/s
Others:
631 kg/s
2000
Data for primary
system design
Mid Point
Fuel
Pump (N° 2)
mfr/pump: 3500 kg/s
ΔPpump:
47000 Pa
Pump duct v = 1.9 m/s
Δppump = 0.5 ξ ρ v2
ξ= 2.5 pump working
ξ= 3.3 pump not locked
ξ= 4.8 pump locked
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008
XT- ADS Primary Pump Characteristic
3
2.5
n=350 rpm
Pump Head [m]
2
Best efficiency point
1.5
1
0.5
0
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Mass Flow Rate [kg/s]
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EUROTRANS: WP1.5 Technical meeting, Bologna, May 28-29, 2008