Compressor — R404A compressor — 74.5 kW cooling, 31.89 kW input, COP 2.34 at the AHRI 7.2/54.4 °C rating point.
A Copeland listing, from the manufacturer's published data.
| Model | Copeland 4DJNR28ME-AWX (R404A Discus recip, 60 Hz, MD) |
| Refrigerant | R404A |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 37.5 / 0.0 K |
| Cooling capacity @ 7.2/54.4 °C | 74.50 kW |
| Input power @ 7.2/54.4 °C | 31.89 kW |
| COP @ 7.2/54.4 °C | 2.34 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 37.5 K superheat and 0.0 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 |
|---|---|---|---|
| -40 / 10 | 22.10 | 9.40 | 2.35 |
| -40 / 30 | 16.09 | 10.57 | 1.52 |
| -30 / 10 | 37.79 | 11.41 | 3.31 |
| -30 / 30 | 29.10 | 14.13 | 2.06 |
| -30 / 50 | 18.99 | 15.27 | 1.24 |
| -20 / 10 | 59.93 | 12.81 | 4.68 |
| -20 / 30 | 46.61 | 17.27 | 2.70 |
| -20 / 50 | 32.23 | 20.46 | 1.58 |
| 0 / 30 | 100.33 | 20.85 | 4.81 |
| 0 / 50 | 71.57 | 28.73 | 2.49 |
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 4DJNR28ME-AWX (R134A Discus recip, 60 Hz, AC) | R134a |
| compressors | Copeland 4DJNR28ME-TSK (R407C Discus recip, 60 Hz, MD) | 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.