Apps & Tools

Engineering and market software I build — free, browser-based, nothing to install.

OTS R&D

The Engineering Workbench

HVAC&R design and property tools I build and lead as Software Engineering Manager at OTS R&D, grounded in ASHRAE and IAPWS reference data. No account needed.

Refrigerant Cycle Designer Vapor-compression and heat-pump cycles, 15+ topologies, 125+ refrigerants, live P-h chart.

Air System Designer Air handlers end to end — coils, mixing, energy recovery, fans — on a live psych chart.

Psychrometric Chart State points, process and SHR lines, mixing, ASHRAE comfort zones, SI/IP, SVG/PNG export.

Log P-h Diagram State points and full cycles for 60+ refrigerants; compare two on the same axes.

Fluid Property Calculator Moist air, 125+ refrigerants, water and steam (IAPWS-95/IF97), 25 glycols and brines.

Engineering Unit Converter NIST-traceable, 30 categories — tons, BTU/h, CFM, GPM, conductivity, viscosity.

Dimensionless Numbers 22 numbers — Re, Pr, Nu, Gr, Ra, Bi and more — with a flow-regime interpretation.

Personal R&D

Stocks & Markets

apps.michaellippy.com

A factor-based equity research stack of my own — .NET on WebAssembly with a point-in-time backtester behind it. The two tools on a paid market-data feed are invite-only; the rest are open.

Interest Rates Treasury yields and fed funds from FRED, recessions shaded, back to 1954.

Macro Dashboard Growth, inflation, labor and credit, every series in percent, episodes marked.

Leading Indicators Credit spreads, curve slope, financial conditions and the surveys that turn first.

Energy The SPR back to 1977, US supply vs. demand, and the oil shocks before recessions.

Investing Glossary Plain-English definitions for every ratio, factor, indicator and backtest term.

Stock ScreenerInvite Ranks a basket on a weighted factor blend, then backtests it point-in-time.

SignalsInvite Buy, hold and sell lists for a saved strategy, from the same ranking the backtest replays.