XCCR Simulator

BUILDING DIVER…

Guided scenarios

Dive

Target depth10 m

Descent rate18 m/min

Ascent rate9 m/min

WorkloadVO₂ 1.1 L/min

Water temperature12 °C

Oxygen control · SOLO

Active setpointkey H

Low setpoint0.70 bar

High setpoint1.30 bar

Auto switch (up at 21 m · down at 12 m)

Diluent (onboard 3 L, also feeds the BOV)

Simulation

Time warp00:00:00

O₂ cylinder valve closed Fault: solenoid stuck open Fault: solenoid battery dead Fault: cells 1 & 2 read 30 % low Fault: cell 3 current-limited Fault: Petrel link lost (SOLO reverts to 0.7)

Drag to orbit · scroll to zoom · click any part for details. Particles in X-ray: CO₂-laden, scrubbed, O₂ injected, diluent.

PPO₂ cells · voting (bar)

CELL 1

0.70

PASS

CELL 2

0.70

PASS

CELL 3

0.70

PASS

Head-Up Display

Setpoint0.70 L

Voted PPO₂0.70

Real loop PPO₂0.70

Depth10.0 m

Loop FO₂0.35

Dil PPO₂0.42

Loop volume (2 × 4.0 L BM lungs)5.5 L

Ideal loop volume– L

Solenoid · O₂ injection

SOLENOID

IDLE

Fires0 /min

Last pulse0.00 s

O₂ added (avg)0.00 L/m

Metabolic1.10 L/m

MAV flow0 L/m

Dil flow0 L/m

O₂ tank (3 L / 200 bar)200 bar

Diluent tank (3 L / 200 bar)200 bar

Radial scrubber · 3.2 kg

Remaining100%

Est. time3:00

CO₂ sensor0.0 mbar

Insp. PCO₂0.0 mbar

Peak temp12 °C

CO₂ absorbed0.99 L/m

Heat82 W

exhaustedtemperaturereaction front

CO₂ + H₂O → H₂CO₃① CO₂ dissolves in the pellet's surface water film

H₂CO₃ + 2NaOH → Na₂CO₃ + 2H₂O + heat② fast neutralisation by NaOH (catalyst)

Na₂CO₃ + Ca(OH)₂ → CaCO₃ + 2NaOH③ slow step: lime locks CO₂ as chalk, regenerating NaOH

Radial flow, outside-in: exhaled gas runs down the gap between the canister wall and the outer tube, then crosses the bed inwards to the centre tube, so the violet front closes in as a shrinking ring. EN 14143 rating: 225 min at 4 °C, 40 m.