From 4861fa43203b9ae1674dc21e6790dadbf61b1c53 Mon Sep 17 00:00:00 2001 From: Codex Agent Date: Sun, 23 Nov 2025 11:02:33 +0100 Subject: [PATCH] Reduce steam generator conductance to raise primary temperatures --- src/reactor_sim/thermal.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/reactor_sim/thermal.py b/src/reactor_sim/thermal.py index b11ac4e..c1b219f 100644 --- a/src/reactor_sim/thermal.py +++ b/src/reactor_sim/thermal.py @@ -18,7 +18,8 @@ def heat_transfer(primary: CoolantLoopState, secondary: CoolantLoopState, core_p if secondary.mass_flow_rate <= 0.0: return 0.0 delta_t = max(0.0, primary.temperature_out - secondary.temperature_in) - conductance = 0.15 # steam generator effectiveness + # Require a larger temperature difference to push full power across the steam generator. + conductance = 0.02 efficiency = 1.0 - math.exp(-conductance * delta_t) transferred = min(core_power_mw, core_power_mw * efficiency) LOGGER.debug("Heat transfer %.2f MW with ΔT=%.1fK", transferred, delta_t)