The Compressor Galaxy — 12,000+ refrigeration compressors plotted on a single chart
By DigiEntropy Engineering · 2025-12-21 · 5 min read
13 brands. 12,000+ compressor models. Every qualified refrigerant. All on one interactive chart you can pan, zoom, and filter. The Compressor Galaxy is the discovery layer of DigiEntropy — and it's how engineers find candidates they didn't know existed.
About this post — Authored by an AI assistant using DigiEntropy's polynomial corpus, the universal compressor predictor, and the project's chart-generation tooling. Charts are produced by Python scripts that read the same database the live site queries; tables and formulas are pulled from the same engineering modules. Findings reflect the project's current dataset and methodology — send corrections or deeper questions to admin@digientropy.com. Most compressor selection workflows start with a known candidate. You pick a Bitzer 4PCS-10.2 because that's what was in the last project, or because the wholesaler quoted it, or because the brand rep dropped a datasheet. You compare it to "alternatives" — usually two or three models from the same brand or one cross-brand option someone mentioned. What you don't do, almost ever, is survey the full universe. Looking at every compressor in every brand at your target capacity and refrigerant isn't a workflow anyone runs, because the tools to do it haven't existed. The Compressor Galaxy is built to make exactly that survey easy. What it shows The Galaxy is a single interactive scatter plot. Each dot is one compressor model + one qualified refrigerant combination. Position is: - X-axis: cooling capacity at MT (-10/40°C), in kW - Y-axis: refrigerant, ordered by GWP (naturals at bottom, high-GWP HFCs at top) Colour is brand. Hover any dot to see the model, brand, refrigerant, and exact capacity. Click to pivot into Compressor 360° for that model — full performance plots, retrofit analysis, suppliers, lifelong cost, the whole picture. Filters across the top let you narrow: - Brand — multi-select. Hide the brands you don't have access to or aren't interested in. - Refrigerant — multi-select. Useful when you've already decided on R454C and want to see who supports it. - Application band — MT / LT / HT / ULT. Re-evaluates the X-axis at the chosen band's standard conditions. - Compressor technology — reciprocating, screw, scroll, centrifugal. - Capacity range — slider, defaults to the full range. Why this view changes the workflow Three things become visible that weren't before: 1. Refrigerant adoption per brand at a glance Look at the Galaxy filtered to R744 (CO2). You'll see Bitzer, Dorin, Frascold, Bock, Carlyle, Copeland — but not (much) Hanbell, not Snowkey, not the smaller Chinese brands. That tells you instantly which brands are "real" CO2 players vs which still treat it as a niche. Same exercise on R290: very different distribution. The brands serious about hydrocarbon refrigeration aren't always the same ones strong…