Compressor — R1234yf compressor — 0.2 kW cooling, 0.11 kW input, COP 2.03 at the AHRI 7.2/54.4 °C rating point.
A Embraco listing, from the manufacturer's published data.
| Model | Embraco EM20LHR (R1234yf hermetic, HBP, EN12900, 50-60 Hz) |
| Refrigerant | R1234yf |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 15.0 / 0.0 K |
| Cooling capacity @ 7.2/54.4 °C | 0.23 kW |
| Input power @ 7.2/54.4 °C | 0.11 kW |
| COP @ 7.2/54.4 °C | 2.03 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 15.0 K superheat and 0.0 K subcooling; the solver corrects them to the operating superheat and subcooling. Envelope: the manufacturer's 5-sided polygon. The mass-flow coefficient set is published too, and the solver checks it against the capacity set.
| te / tc °C | Capacity kW | Power kW | COP |
|---|---|---|---|
| -0 / 20 | 0.30 | 0.05 | 5.37 |
| -0 / 40 | 0.23 | 0.09 | 2.49 |
| -0 / 60 | 0.15 | 0.11 | 1.45 |
| 10 / 20 | 0.44 | 0.04 | 10.51 |
| 10 / 40 | 0.33 | 0.10 | 3.41 |
| 10 / 60 | 0.22 | 0.12 | 1.90 |
Points on a 10 K grid inside the published envelope; the builder solves any point in it, and warns past it.
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| Embraco hermetic and variable-capacity compressor maps, fitted from the maker's published tables | 1,283 maps from 815 models (R134a 518, R600a 315, R290 285, R404A 141, R22 11, R1234yf 10, R422D 2, R502 1); 178 variable-capacity models with a table per speed | fitted at the order each table's levels determine (three condensing levels: quadratic in tc), the tables are reproduced at a median RMS of 0.08 % (p90 0.20 %); every map reads the standard's own rating point within 0.08 % at the median and 0.4 % at the ninetieth percentile; every carried flow set closes the identity once the rating's own return-gas and liquid temperatures are read off the node (ASHRAE rates with the liquid at 32.2 °C, 22 K under the condenser). 72 tables withheld and listed by reason: blend groups published as one table, variable-capacity models with fewer than three speeds tabulated, three with a COP under 0.5 at the rating point, three duplicates |
From the validation page; every row is held by a test.
Listed from published data; a listing's figures are the manufacturer's, the model that runs them is ours. Solver results never depend on who has claimed what.