pie-fluid-systems
Water-based fluid system design: pipe sizing (Darcy-Weisbach, Hazen-Williams), flow rates, pressure drops, CDU selection for DTC cooling, pump curves, and ASHRAE TC 9.9 water class enforcement. Activates for cooling loop design, plumbing calculations, CDU selection, pump sizing, and hydraulic system validation.
npx skills add majiayu000/claude-skill-registry --skill fluid-systems --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# Fluid Systems Skill ## At a Glance Design and validate water-based fluid systems from household plumbing to high-density data center cooling loops. **Activation:** InfrastructureRequest type='cooling' or type='plumbing', any CDU sizing request, pipe sizing question, flow rate calculation, or pressure drop analysis. **Key capabilities:** - Pipe sizing via Darcy-Weisbach (all fluids) and Hazen-Williams (water only) - Flow rate calculation from heat load (Q = Q_heat / (rho x Cp x DT)) - Pressure drop analysis with fitting equivalent lengths - ASHRAE TC 9.9 water class selection (W1-W5) for data center cooling - CDU/DTC cooling selection and manifold topology - Pump curve analysis with NPSH verification and affinity laws - Safety boundary enforcement by safety class (residential through industrial) > ENGINEERING DISCLAIMER: All calculations must be verified by a licensed Professional Engineer before use in construction or installation. Local plumbing codes (IPC/UPC) and pressure vessel standards (ASME B31.9) impose requirements not captured here. User assumes all responsibility for verification. **Quick routing:** Pipe sizing method -- see Pipe Sizing. ASHRAE water class selection --
- At a Glance
- Pipe Sizing
- Darcy-Weisbach (All Fluids)
- Hazen-Williams (Water Only)
- Velocity Limits
- Standard Pipe Size Selection
- Flow Rate Calculation
- From Heat Load
- Worked Example
- From Fixture Units (Plumbing)
- Pressure Drop Analysis
- Equivalent Length Method (Fittings)
- System Curve
- Water Hammer Check
What does the pie-fluid-systems skill do?
Water-based fluid system design: pipe sizing (Darcy-Weisbach, Hazen-Williams), flow rates, pressure drops, CDU selection for DTC cooling, pump curves, and ASHRAE TC 9.9 water class enforcement. Activates for cooling loop design, plumbing calculations, CDU selection, pump sizing, and hydraulic system validation.
How do I install it?
Run `npx skills add majiayu000/claude-skill-registry --skill fluid-systems --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.