Compressor — R134a compressor — 11.4 kW cooling, 4.25 kW input, COP 2.69 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland ZRH78KTE-TFD (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 | 11.41 kW |
| Input power @ 7.2/54.4 °C | 4.25 kW |
| COP @ 7.2/54.4 °C | 2.69 |
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 | 1.08 | 2.49 | 0.43 |
| -20 / 40 | 0.11 | 2.88 | 0.04 |
| -10 / 30 | 7.91 | 2.43 | 3.25 |
| -10 / 40 | 6.49 | 2.98 | 2.18 |
| 0 / 30 | 13.15 | 2.43 | 5.42 |
| 0 / 40 | 11.44 | 3.04 | 3.76 |
| 0 / 60 | 8.02 | 4.84 | 1.66 |
| 10 / 30 | 18.73 | 2.50 | 7.50 |
| 10 / 40 | 16.89 | 3.08 | 5.49 |
| 10 / 60 | 12.84 | 4.83 | 2.66 |
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 ZRH78KTE-TFD (R134A scroll, 60 Hz, AC) | R134a |
| 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.