# HW4Prob2 - A reactor coolant system consist of the reactor...

This preview shows pages 1–3. Sign up to view the full content.

Single Phase 37 A reactor coolant system consist of the reactor vessel, two hot legs, two steam generators, four cold legs and four reactor coolant pumps as illustrated below. For the given data: a) Determine the total system flow rate b) Assuming one of the reactor coolant pumps in Loop 1 fails, determine the new system mass flow rate. You may assume all loss coefficients remain unchanged. Core Upper Plenum Lower Plenum Hot Leg 1 Cold Leg 1a Cold Leg 1b Hot Leg 2 Cold Leg 2a Cold Leg 2b m 1 2 1a 2a 2b 1b c m m m m m m Other than the reactor coolant pump failure, you can assume that the hot legs are identical and the cold legs are identical. Problem Data Reactor Coolant Pump P Δ 112 psia Hot Leg Flow Area (each) 9.62 ft 2 Hot Leg Total Effective Loss Coefficient (including friction) 2.829 Cold Leg Flow Area (each) 4.909 ft 2 Cold Leg Total Effective Loss Coefficient (including friction) 2.194 Core Flow Area 60.8 ft 2 Core Total Effective Loss Coefficient (including friction) 32.64 Average Coolant Temperature 590 F System Pressure 2250 psia SOLUTION Loop 1 Momentum Equations Upper Plenum to RCP Inlet Manifold c A c A U c U g G K H g g P H g g P ρ ρ ρ 2 2 1 1 + + = + 1. RCP Inlet Manifold to Lower Plenum

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document