AFRICHILLER scroll water chiller, 20 to 320 kW

The AFRICHILLER is Afric Froid’s air-cooled scroll water chiller. It comes in 10 standard models from 20 to 320 kW, with 1 to 4 Danfoss SZ scroll compressors, each on its own refrigerant circuit: if one circuit stops, the others keep producing. Capacities are given for water from 12 to 7 °C and 38 °C outdoor air, a harder condition than the 35 °C of the EN 14511 standard, and the COP is above 3. Capacities up to 360 kW are available on request.

AFRICHILLER models

Cooling capacity with water from 12 to 7 °C and 38 °C air. Water flow for a 5 °C difference. At 80, 120 and 160 kW, two versions: fewer compressors, or more capacity steps and backup circuits. The 120 kW is available with R134a (2 × SZ380) or R407C (3 × SZ185). The other models can also be built with R134a, at a lower capacity: we calculate it for you.

Dimensions

Dimensions of the standard versions, without options. Other models: on quote.

Standard equipment

• Danfoss scroll compressors on anti-vibration mounts, with discharge check valve, crankcase heater and discharge temperature sensor.
• One refrigerant circuit per compressor, with high and low pressure sensors, filter drier and sight glass.
• Electronic stepper expansion valve on each circuit, or thermostatic depending on the configuration.
• Oversized V-shaped air-cooled condenser, copper tubes and aluminium fins; epoxy-coated fins as an option.
• Shell and tube evaporator with separate circuits, tolerant to fouling; stainless steel plate heat exchanger possible.
• Power and control panel, with thermal and magnetothermal protection of compressors and fans, and phase control relay.
• Danfoss electronic controller.
• Water pump and hydraulic circuit.

Options

• Second standby water pump, with its hydraulic circuit.
• Variable-speed EC fans.
• Storage tank in galvanized or stainless steel.
• Secondary pumping station with a frequency inverter on the pump.
• Inverter compressors (variable speed).
• Glycol water, heat recovery, reinforced version for 50 °C air.
• R290 (propane) with Danfoss DSN compressors, designed for chillers.

Why scroll?

• Efficiency: the scroll compressor has few moving parts and excellent efficiency at air conditioning conditions.
• Quiet and compact: low vibration and a small footprint, suited to roofs and the courtyards of hotels or buildings.
• Step control: several compressors in parallel, and the inverter option for continuously variable capacity.
• Refrigerants: R407C or R134a with the Danfoss SY and SZ series, R290 (propane) with the DSN series, designed by Danfoss for chillers and heat pumps.

For higher capacities or continuous duty, see our Bock reciprocating chillers and Bitzer screw chillers, the 20 to 1000 kW water chiller page comparing the three technologies, and the chillers category.

Afric Froid, maker of the AFRICHILLER

Afric Froid designs, builds, installs and services its AFRICHILLER water chillers in Tunisia, Algeria, Senegal and Ivory Coast. Choose a model below or tell us the application, the flow, the water temperatures and the maximum outdoor temperature: we will send you a proposal and a quote.