calculation · Water Fuel Cell · computed
WFC design session v31: best candidate (Q=20.7, 64.5kHz)
Sweep: Widen annular gap into 6-9mm to slide the 0.1mm vapor film down into the 80-250 Td CGDE window at ~800V cell, holding cold/pure water for high R_ct/Q, and re-check C_eff still resonates near 45kHz.
Cell: 12mm rod in 28.0mm tube × 90mm, 6 cell(s) parallel → C_eff = 3.04nF, bulk water R = 25529Ω. Water/electrodes (Randles): 0.5ppm Na+ @ 5°C, surface ×0.5 → λ_D 102nm, C_dl 53.0µF, cell series R 25.8Ω, displacement current 96.9%, breakdown margin ×525. Fig-8 voltammetry (4,798,661): τ_EDL 1352899.0µs (87270.5 carrier cycles to charge), Faradaic leakage at peak 707.8mA (leak score 0.08 — keep amp leakage inhibited while voltage climbs the ladder). Vapor-film discharge (CGDE onset, 993V across 0.1mm film): regime townsend-avalanche, film Paschen 719V, 396 Td. Per-molecule (series micro-capacitor chain): 29.63M molecules across 8.00mm → 33.53 µV/molecule (polarization (µV band)). Chokes: 2 × 0.001H (420 turns, AWG 26, 50m wire, AC R 6.7Ω each). At resonance f_r = 64.51kHz: Xl = 811Ω, Xc = 811Ω, tank Q = 20.7, coil Q = 60.5. Cell voltage 993V from 48V drive (×20.7). Tank current 1.23A circulating (CW upper bound — rate wire/switch for this); average input 25mA at 2% duty. No hard violations (band, wire length, dielectric). Average current is scored, not gated. Score 0.594.
Basis
- Confidence
- 0.70
- Method
- townsend-v5
- Recorded
- Published
- 30 Aug 2026
- Device
- Water Fuel Cell
- Component
- cell
- Source Ref
- design session v31
- Notebook Id
- 1585
design-loop Q resonance