Compliance + TEWI in one click
By DigiEntropy Engineering · 2026-02-14 · 6 min read
F-Gas direct emissions + indirect kWh emissions + GWP + safety class + EN 378 charge limit, all in one regulatory verdict and one PDF. The Compliance page is the slide auditors and sustainability committees actually look at.
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.
Project specs land with regulatory questions: does this system meet the F-Gas Regulation? Is the charge under the EN 378 limit for the room volume? Is the lifetime CO2 footprint defensible to the sustainability committee? What's the GWP-weighted F-Gas quota exposure?
Each of those questions has a dozen sub-questions. Most engineering tools answer one. The Compliance page answers all of them in one verdict, with the breakdown rendered as a PDF ready for the regulatory file.
52 t - direct CO2-eq, 50 kg R448A - 5 % annual leak over 15 years
A 50 kg R448A charge with 5 % annual leak over 15 years = 50 × 1387 × 0.05 × 15 = 52 t CO2-eq.
450 t - indirect CO2-eq, 50 kW MT load - 5000 hours/year at COP 2.5 over 15 years
The same 50 kW MT load running 5000 hours/year at COP 2.5 = 100 MWh/year × 0.3 t CO2/MWh × 15 years = 450 t CO2-eq.
95.5 t - Scenario A total TEWI - 5.5 t direct plus 90 t indirect
TEWI: 8 × 1387 × 0.05 × 10 = 5.5 t direct, plus 30 MWh/year × 10 years × 0.3 = 90 t indirect = 95.5 t total.
150 g - R290 limit per circuit - A3, direct expansion, occupied class A
EN 378 practical limit for A3 at occupied class A: 150 g per circuit for direct expansion → MARGINAL at 250 g per circuit.
1387 - GWP of R448A - under the 2500 threshold for commercial refrigeration
F-Gas check: R448A GWP 1387 < 2500 threshold for commercial refrigeration → PASS.
80 % - of users need the EU bundle - F-Gas + EN 378 + TEWI
We default to the EU F-Gas + EN 378 + TEWI bundle because that's what 80 % of users need.
What it checks
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