Jens96/entropyL-refrigerant-eos

EntropyL Refrigerant Analyzer — full CoolProp engine (44/44) + UI update

Updates for refrigerant1.html (EntropyL). With the CoolProp files installed, all 44 fluids — including the real predefined mixtures (R407C, R448A, R502, R515B, ...) — run on CoolProp's own C++ engine compiled to WebAssembly: the exact same core as CoolProp/REFPROP. Without the CoolProp files, 33/44 fluids run on the bundled published Helmholtz equations and the rest fall back to the built-in model.

Verified headless against CoolProp 8.0.0: EOS count 44/44; R600a cycle 20/70 °C SH 5 SC 0 η 0.7 → COP_cool 3.0007 (matches CoolProp exactly); R448A and R502 mixture cycles computed directly; p_sat R600a 3.022 bar, R717 1.194 bar at −30 °C.

Installation (4 files + 4 lines)

1. Download coolprop-js-b64.js, coolprop-wasm-b64.js, engine-patch.js and ui-patch.js into the same folder as refrigerant1.html (the two coolprop files are the official CoolProp 8.0.0 build, base64-encoded so they load from file:// with no server).
2. Add four lines right before </body>, in this order:

<script src="coolprop-js-b64.js"></script>
<script src="coolprop-wasm-b64.js"></script>
<script src="engine-patch.js"></script>
<script src="ui-patch.js"></script>

3. Hard reload (Ctrl+F5). First load takes a few seconds while the ~12 MB wasm engine compiles; every load after that is fast.
4. The console (F12) confirms what is running: [EntropyL] engine-patch v9 ... → [EntropyL] CoolProp engine tier active (CoolProp 8.0.0) — all 44 fluids → [EntropyL] ui-patch v2 activated. The status pill then shows Helmholtz EOS · 44/44 fluids.

What ui-patch v2 changes (all UI text in English)

• Default view: every fluid in Natural, HC and HFO is visible on load (per-fluid hidden flags cleared — Water and Ethylene now show too); CFC, HCFC, HFC and Blend are enabled via the class chips and remembered in the share link.
• Comparison card on the phase diagram: with fluid A + comparison B selected, a clean table (p sat, h fg, ρ liq, ρ vap and Δ) is drawn next to the T-line — replacing the old delta-p bracket.
• Two charts instead of three: the COP chart plus a new chart with free choice of both X and Y axis (suction/evaporation/condensation temperature vs COP, discharge temperature, evaporator/condenser heat, compressor work, pressure ratio, suction/discharge density, displacement, mass flow).
• "Import EOS" and "Copy CSV" removed.

COP definition

The cycle uses the true isentropic reference (two-phase endpoint allowed, quality from entropy) — the same convention as CoolProp and CoolPack's main "COP": R600a @ 20/70 °C, SH 5, SC 0, η_is 0.7 → COP_cool 3.00 (CoolPack "COP" 3.01). CoolPack's "COP cool" 2.69 uses the older saturated-vapour convention.

Notes

• Enthalpies are shown with the ASHRAE datum h_f(0 °C) = 200 kJ/kg (the CoolProp tier applies the offset per fluid).
• h_fg for ammonia at −30 °C is 1359.7 kJ/kg per CoolProp 8.0.0's EOS (older table value 1371) — the accuracy panel shows this honestly.
• build-fluids-data.py can rebuild the JSON bundle from CoolProp's GitHub if you want the fallback tier refreshed.

Source: CoolProp project (MIT licence) — https://github.com/coolprop/coolprop