Compressor — R134a compressor — 56.5 kW cooling, 19.52 kW input, COP 2.89 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland 4DJXR19ME-AWX (R134A Discus recip, 60 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 | 56.50 kW |
| Input power @ 7.2/54.4 °C | 19.52 kW |
| COP @ 7.2/54.4 °C | 2.89 |
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 6-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 |
|---|---|---|---|
| -10 / 40 | 35.65 | 12.49 | 2.85 |
| 0 / 40 | 55.91 | 14.85 | 3.77 |
| 0 / 70 | 34.65 | 19.43 | 1.78 |
| 10 / 40 | 83.72 | 16.71 | 5.01 |
| 10 / 70 | 53.92 | 23.88 | 2.26 |
| 20 / 40 | 120.64 | 17.76 | 6.79 |
| 20 / 70 | 80.11 | 28.08 | 2.85 |
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 4DJXR19ME-TSK (R513A Discus recip, 60 Hz, MD) | R513A |
| 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.