Compressor — R404A compressor — 9.8 kW cooling, 4.94 kW input, COP 1.99 at the AHRI 7.2/54.4 °C rating point.
A Tecumseh listing, from the manufacturer's published data.
| Model | Tecumseh AHC4540ZTZ (R404A hermetic, HBP, EN12900, 60 Hz) |
| Refrigerant | R404A |
| Performance data | AHRI 540 / EN 12900 10-coefficient map |
| Reference superheat / subcool | 25.0 / 0.0 K |
| Cooling capacity @ 7.2/54.4 °C | 9.81 kW |
| Input power @ 7.2/54.4 °C | 4.94 kW |
| COP @ 7.2/54.4 °C | 1.99 |
AHRI 540 / EN 12900 ten-coefficient polynomials in evaporating and condensing temperature, rated at 25.0 K superheat and 0.0 K subcooling; the solver corrects them to the operating superheat and subcooling. Envelope: evaporating -25 to 15 °C, condensing 30 to 60 °C (a rectangle).
| te / tc °C | Capacity kW | Power kW | COP |
|---|---|---|---|
| -20 / 30 | 5.27 | 2.64 | 2.00 |
| -20 / 40 | 4.19 | 2.73 | 1.53 |
| -20 / 60 | 1.88 | 2.68 | 0.70 |
| -10 / 30 | 8.37 | 3.21 | 2.60 |
| -10 / 40 | 6.94 | 3.40 | 2.04 |
| -10 / 60 | 3.94 | 3.60 | 1.09 |
| 0 / 30 | 12.47 | 3.85 | 3.24 |
| 0 / 40 | 10.46 | 4.08 | 2.57 |
| 0 / 60 | 6.29 | 4.45 | 1.42 |
| 10 / 30 | 17.80 | 4.62 | 3.86 |
| 10 / 40 | 14.98 | 4.85 | 3.09 |
| 10 / 60 | 9.19 | 5.29 | 1.74 |
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 | Tecumseh AHC4540ZTZ (R404A hermetic, HBP, EN12900, 50 Hz) | R404A |
| Tecumseh hermetic compressor maps, the maker's own coefficient sets | 864 maps from 297 models (R404A 324, R134a 178, R290 109, R22 97, R513A 89, R1234yf 53, R600a 10, R410A 4) at 93 application × refrigerant × frequency listings | power reads the selector's point within 0.95 % on every map (units and coefficient order, BTU/h sets scaled and Fahrenheit sets substituted exactly); 522 maps rate at their own basis and read the selector's capacity within 1 %; on the 342 the selector corrected from a liquid-temperature or return-gas basis to the regime, this solver's AHRI 540 §6 correction reproduces the selector's corrected capacity within +0.3 % on average (the raw polynomial sits +9.5 % over it), single maps ±11 % where a return-gas basis is carried as one reference superheat. 2 028 zeotrope rows (R448A, R449A, R452A, R454C, R455A, R407C) are withheld: Tecumseh publishes them on the glide's mid-point where AHRI 540 and this catalog rate on dew points |
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.