Compressor — R134a compressor — 12.1 kW cooling, 3.93 kW input, COP 3.07 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland ZR81KTE-TF5 (R134A scroll, 50 Hz, AC) |
| Refrigerant | R134a |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 11.1 / 8.3 K |
| Cooling capacity @ 7.2/54.4 °C | 12.05 kW |
| Input power @ 7.2/54.4 °C | 3.93 kW |
| COP @ 7.2/54.4 °C | 3.07 |
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: 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 |
|---|---|---|---|
| -20 / 30 | 5.25 | 2.25 | 2.33 |
| -20 / 40 | 4.74 | 2.78 | 1.71 |
| -10 / 30 | 8.19 | 2.29 | 3.59 |
| -10 / 40 | 7.45 | 2.84 | 2.63 |
| 0 / 30 | 12.62 | 2.31 | 5.45 |
| 0 / 40 | 11.54 | 2.87 | 4.02 |
| 0 / 60 | 9.15 | 4.39 | 2.09 |
| 10 / 30 | 18.65 | 2.36 | 7.90 |
| 10 / 40 | 17.14 | 2.91 | 5.88 |
| 10 / 60 | 13.78 | 4.44 | 3.10 |
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.
| compressors | Copeland ZR81KTE-TF5 (R134A scroll, 60 Hz, AC) | R134a |
| compressors | Copeland ZR81KTE-TF5 (R22 scroll, 50 Hz, AC) | R22 |
| compressors | Copeland ZR81KTE-TF5 (R22 scroll, 60 Hz, AC) | R22 |
| compressors | Copeland ZR81KTE-TFD (R407C scroll, 50 Hz, AC) | R407C |
| compressors | Copeland ZR81KTE-TFD (R407C scroll, 60 Hz, AC) | R407C |
| 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.