Compressor — R290 compressor — 4.0 kW cooling, 1.84 kW input, COP 2.17 at the AHRI 7.2/54.4 °C rating point.
A Embraco listing, from the manufacturer's published data.
| Model | Embraco VNEX621U (R290 variable-capacity hermetic, MBP, EN12900, 50-60 Hz) |
| Refrigerant | R290 |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 25.0 / 0.0 K |
| Cooling capacity @ 7.2/54.4 °C | 4.00 kW |
| Input power @ 7.2/54.4 °C | 1.84 kW |
| COP @ 7.2/54.4 °C | 2.17 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 25.0 K superheat and 0.0 K subcooling; the solver corrects them to the operating superheat and subcooling. Envelope: the manufacturer's 5-sided polygon. It publishes 5 part-load steps (AHRI 540 §5.3.3), which the solver interpolates between. 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 |
|---|---|---|---|
| -20 / 20 | 2.11 | 0.85 | 2.48 |
| -20 / 30 | 1.97 | 0.92 | 2.14 |
| -10 / 20 | 3.08 | 0.99 | 3.09 |
| -10 / 30 | 2.87 | 1.14 | 2.52 |
| -10 / 50 | 2.33 | 1.29 | 1.80 |
| 0 / 20 | 4.40 | 1.01 | 4.36 |
| 0 / 30 | 4.08 | 1.28 | 3.20 |
| 0 / 50 | 3.33 | 1.60 | 2.09 |
| 10 / 20 | 6.16 | 0.81 | 7.62 |
| 10 / 30 | 5.69 | 1.25 | 4.55 |
| 10 / 50 | 4.63 | 1.83 | 2.53 |
Points on a 10 K grid inside the published envelope; the builder solves any point in it, and warns past it.
Open the builder and pick this listing from the catalog picker — the solver runs it with the catalog's own figures, at your design point or across a year of weather.
| 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.