Vertical Shower Drain-Water Copper Falling-Film Heat-Recovery (DWHR) Sizer

Deterministic Falling annular turbulent water-film Nusselt correlation inside vertical DN50 copper tube counterflow to external helical cold-water coilNTU engine (.pdf, .svg, .json) built for EcoDrain, Power-Pipe, Showersave, Viega — zero-upload ephemeral Wasm RAM execution.

+ Drop File

Cloudflare Ephemeral Wasm RAM · 0% Retention

DETERMINISTIC VERDICT

Double-click 2.4× zoom · Drag to pan / 3D orbit

Free Deterministic X-Ray Preview

Running ephemeral Wasm verification…

Verified Engineering Output

Instant unlock via Apple Pay / Card (Paddle Merchant of Record) · 1-click automated refund, zero support tickets.

HeyCheck Cloud Compilers · Deterministic Zero-Upload Wasm Execution Terms Privacy Refund Policy