Compressor — R454B compressor — 66.5 kW cooling, 20.80 kW input, COP 3.20 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland YAT274K1E-TFD (R454B scroll, 50 Hz, AC) |
| Refrigerant | R454B |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 11.1 / 8.3 K |
| Cooling capacity @ 7.2/54.4 °C | 66.46 kW |
| Input power @ 7.2/54.4 °C | 20.80 kW |
| COP @ 7.2/54.4 °C | 3.20 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 11.1 K superheat and 8.3 K subcooling; the solver corrects them to the operating superheat and subcooling. Envelope: evaporating -50 to -25 °C, condensing -20 to 5 °C (a rectangle). 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 |
|---|---|---|---|
| -50 / -20 | 7.88 | -0.13 | 0.00 |
| -50 / -10 | 0.94 | 2.17 | 0.43 |
| -50 / 0 | -7.89 | 4.22 | -1.87 |
| -40 / -20 | 18.18 | 0.20 | 92.52 |
| -40 / -10 | 13.44 | 2.60 | 5.17 |
| -40 / 0 | 9.01 | 4.63 | 1.94 |
| -30 / -20 | 31.71 | 0.17 | 183.19 |
| -30 / -10 | 25.93 | 2.81 | 9.24 |
| -30 / 0 | 22.66 | 4.94 | 4.59 |
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.
| Compressor maps converted from the vendor's own rating database | 4 776 maps | every basis median within 3.2 % of the nomenclature; the vendor's polynomial substituted exactly, never refitted |
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.