calculation · Water Fuel Cell · computed
WFC design session v41: best candidate (Q=61.1, 98.2kHz)
Sweep: Co-vary a modest peak_v drop WITH gap/length geometry AND colder/purer water simultaneously (none of the prior single-lever sweeps did this) to walk the 0.1mm film from 293 Td into the 150-200 Td cold-chemistry window while holding leakage crushed.
Cell: 10mm rod in 12.0mm tube × 55mm, 1 cell(s) parallel → C_eff = 1.46nF, bulk water R = 127536Ω. Water/electrodes (Randles): 0.1ppm Na+ @ 2°C, surface ×0.25 → λ_D 227nm, C_dl 0.8µF, cell series R 9.7Ω, displacement current 99.1%, breakdown margin ×91. Fig-8 voltammetry (4,798,661): τ_EDL 101883.5µs (10005.3 carrier cycles to charge), Faradaic leakage at peak 17.3mA (leak score 0.88 — keep amp leakage inhibited while voltage climbs the ladder). Vapor-film discharge (CGDE onset, 733V across 0.1mm film): regime townsend-avalanche, film Paschen 719V, 292 Td. Per-molecule (series micro-capacitor chain): 3.70M molecules across 1.00mm → 198.00 µV/molecule (polarization (µV band)). Chokes: 2 × 0.0009H (520 turns, AWG 22, 62m wire, AC R 4.3Ω each). At resonance f_r = 98.20kHz: Xl = 1111Ω, Xc = 1111Ω, tank Q = 61.1, coil Q = 130.6. Cell voltage 733V from 12V drive (×61.1). Tank current 0.66A circulating (CW upper bound — rate wire/switch for this); average input 13mA at 2% duty. No hard violations (band, wire length, dielectric). Average current is scored, not gated. Score 0.755.
Basis
- Confidence
- 0.70
- Method
- townsend-v5
- Recorded
- Published
- 30 Aug 2026
- Device
- Water Fuel Cell
- Component
- cell
- Source Ref
- design session v41
- Notebook Id
- 1618
design-loop Q resonance