calculation · Water Fuel Cell · computed
WFC design session v27: best candidate (Q=82.4, 98.6kHz)
Sweep: Break the cold-pure Q-overshoot trap: pair aggressive thin-film geometry with WARMER/slightly-higher-ppm water to lower tank Q and series current, hunting the Td sweet spot from below the 1A ceiling rather than piling on cell voltage.
Cell: 8mm rod in 9.0mm tube × 40mm, 8 cell(s) parallel → C_eff = 13.02nF, bulk water R = 11555Ω. Water/electrodes (Randles): 0.15ppm Na+ @ 4°C, surface ×0.25 → λ_D 186nm, C_dl 4.4µF, cell series R 1.3Ω, displacement current 98.9%, breakdown margin ×3. Vapor-film discharge (CGDE onset, 9884V across 0.1mm film): regime streamer, film Paschen 719V, 3941 Td. Per-molecule (series micro-capacitor chain): 1.85M molecules across 0.50mm → 5.34 mV/molecule (elongation (mV band)). Chokes: 2 × 0.0001H (20 turns, AWG 18, 2m wire, AC R 0.1Ω each). At resonance f_r = 98.62kHz: Xl = 124Ω, Xc = 124Ω, tank Q = 82.4, coil Q = 707.1. Cell voltage 9884V from 120V drive (×82.4). Tank current 79.76A circulating (CW upper bound — rate wire/switch for this); average input 7976mA at 10% duty (>1A — disfavored). All constraints satisfied (current <1A, band, wire length). Score 0.651.
Basis
- Confidence
- 0.70
- Method
- townsend-v5
- Recorded
- Published
- 30 Aug 2026
- Device
- Water Fuel Cell
- Component
- cell
- Source Ref
- design session v27
- Notebook Id
- 1549
design-loop Q resonance