calculation · Water Fuel Cell · computed
WFC design session v39: best candidate (Q=57.6, 98.9kHz)
Sweep: Finer grid at the tight 10/12mm×60mm best with a low peak_v corridor (12-14V → 650-770V cell at Q55) paired with a surface_factor sweep — the untouched lever — to trade C_dl/R_ct and pull the film into the 80-250 Td window while holding leakage low.
Cell: 10mm rod in 12.0mm tube × 55mm, 1 cell(s) parallel → C_eff = 1.44nF, bulk water R = 114783Ω. Water/electrodes (Randles): 0.1ppm Na+ @ 5°C, surface ×0.5 → λ_D 228nm, C_dl 1.6µF, cell series R 10.9Ω, displacement current 99.0%, breakdown margin ×89. Fig-8 voltammetry (4,798,661): τ_EDL 179917.2µs (17789.7 carrier cycles to charge), Faradaic leakage at peak 35.3mA (leak score 0.73 — keep amp leakage inhibited while voltage climbs the ladder). Vapor-film discharge (CGDE onset, 749V across 0.1mm film): regime townsend-avalanche, film Paschen 719V, 299 Td. Per-molecule (series micro-capacitor chain): 3.70M molecules across 1.00mm → 202.22 µV/molecule (polarization (µV band)). Chokes: 2 × 0.0009H (520 turns, AWG 22, 62m wire, AC R 4.3Ω each). At resonance f_r = 98.88kHz: Xl = 1118Ω, Xc = 1118Ω, tank Q = 57.6, coil Q = 131.3. Cell voltage 749V from 13V drive (×57.6). Tank current 0.67A circulating (CW upper bound — rate wire/switch for this); average input 20mA at 3% duty. No hard violations (band, wire length, dielectric). Average current is scored, not gated. Score 0.733.
Basis
- Confidence
- 0.70
- Method
- townsend-v5
- Recorded
- Published
- 30 Aug 2026
- Device
- Water Fuel Cell
- Component
- cell
- Source Ref
- design session v39
- Notebook Id
- 1614
design-loop Q resonance