Every unit is run before it leaves
Pressure test and run test on the same shop floor that builds the panels and the control cabinets. The figures below are measured, not catalogue values.
Units are assembled in Qihe, pressure-tested and run-tested before dispatch. Selection starts from the room temperature and the daily load, not from a horsepower figure — on the same unit, a 5°C change in evaporating temperature moves capacity by roughly a fifth.
Eight positions, read left to right. Take SKBF4-60L as the example.
Small to mid-size plants with several temperature zones and a load that varies through the day. Parallel compressors are staged in as demand rises, so part-load operation does not mean running a large machine at low efficiency.
Mid to large plants running continuously. Fewer moving parts and a flatter efficiency curve over long hours; compact relative to capacity, which matters in a plant room with limited floor area.
For rooms below −40°C — tuna and ultra-low storage, some pharmaceutical duties. Single-stage compression cannot reach these evaporating temperatures with a workable pressure ratio, so a second stage is required.
Pressure test and run test on the same shop floor that builds the panels and the control cabinets. The figures below are measured, not catalogue values.
Measured data for SKBF4-60L — piston, air-cooled, four in parallel, 60 HP, medium-high temperature duty.
| Item | Configuration | Note |
|---|---|---|
| Model | SKBF4-60L | Piston, air-cooled, 4 parallel, 60 HP, medium-high temperature |
| Compressors | 4 in parallel | Selection by duty; overhaul and spare-part lead time handled by us |
| Capacity at -5°C evaporating | 135.6 kW / 41.8 kW input | Capacity falls as evaporating temperature drops — about 24% between -5°C and -10°C on this unit. This is why capacity cannot be read off a single figure. |
| At -7°C | 124.4 kW / 40.48 kW | |
| At -10°C | 109.2 kW / 38.4 kW | |
| Room temperature | -5 to +5°C | Chilled storage, processing rooms, precooling |
Capacity figures are nominal at the stated evaporating temperatures. Final selection is recalculated against the room load and the refrigerant approved for the destination country.
The list below is the standard scope. Items outside it are priced separately, and the quotation states which is which.
Valves, control cabinets and room doors are quoted separately — they belong to the wider scope, not to the unit. The quotation shows the split so that no line item arrives as a surprise later.
Product, room temperature, tonnage and daily throughput — that is enough to come back with a unit selection and an indicative price.
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