Air-cooled water chiller, 20 to 1000 kW
Afric Froid air-cooled water chiller from 20 to 1000 kW: Danfoss scroll (20 to 360 kW), Bock reciprocating (100 to 400 kW) or Bitzer CSH and HSK screw compressors (300 to 1000 kW), with R290, R134a or R407C. Options: standby pump, galvanized or stainless steel tank, inverter compressors, EC fans, glycol water. On quote.
Afric Froid designs and builds air-cooled water chillers from 20 to 1000 kW. Each unit is sized for your water flow, your water temperatures and the outdoor temperature of your site, then built with Danfoss, Bock or Bitzer compressors.
Three ranges by capacity
| Range | Cooling capacity | Compressors | Refrigerants |
|---|---|---|---|
| AFRICHILLER scroll | 20 to 360 kW | 1 to 4 Danfoss SZ scrolls, one circuit per compressor | R407C or R134a; R290 on request (Danfoss DSN series) |
| Reciprocating | 100 to 400 kW | Bock HG semi-hermetic compressors, several per unit | R134a or R407C, R290 (HC versions) |
| Screw | 300 to 1000 kW | Bitzer screws: CSH compact or HSK semi-hermetic, capacity control by slider | R134a or R407C, R290 (CSHP propane versions) |
Capacities for water from 12 to 7 °C and 38 °C outdoor air. Each unit is sized for your conditions; between 100 and 400 kW, we compare several technologies for your project.
What a unit includes
- Compressors on one or more refrigerant circuits. On the largest units, several independent circuits: if one circuit stops, the other keeps producing.
- Evaporator: stainless steel plate heat exchanger, compact and efficient, or shell and tube, which tolerates dirty water better and is easier to clean.
- Oversized air-cooled condenser, copper tubes and aluminium fins, epoxy-coated as an option, sized for the maximum outdoor temperature of the site.
- Electrical panel and controller: water temperature, capacity steps, high and low pressure safeties, antifreeze and water flow monitoring.
Options
- Hydraulic module: circulation pump, with a second standby pump.
- Storage tank (buffer tank) in galvanized or stainless steel: it stabilizes the water temperature and limits compressor starts.
- Secondary pumping station with a frequency inverter on the pump, to match the flow to the users’ needs.
- Inverter compressors (variable speed): capacity follows the demand, water temperature stays stable and consumption drops at part load.
- EC fans on the condenser: variable speed, lower consumption and less noise.
- Glycol water to produce water below 0 °C.
- Heat recovery: part of the condenser heat is used to produce hot water.
- Reinforced version for 50 °C outdoor air.
Design conditions
Our capacities are given for water from 12 to 7 °C and 38 °C outdoor air. For your project, we size the unit for your water temperatures and for the maximum air temperature of your site, often 40 to 45 °C in summer in Tunisia, Algeria and the Sahel. To estimate the capacity: capacity (kW) = water flow (m³/h) × temperature difference (°C) × 1.163. More in our chillers category.
Applications
Milk and dairy tank cooling (dairy refrigeration), food and beverage processing, bakery mixers, plastic moulds, slaughterhouses, and air conditioning of hotels, hospitals and offices with air handling units or fan coils.
Afric Froid, your chiller manufacturer
Afric Froid designs, builds, installs and services its water chillers in Tunisia, Algeria, Senegal and Ivory Coast. Frigo Indus is ISO 9001:2015 certified by DQS for the design, manufacture, sale, installation and after-sales service of refrigeration machines. Tell us the application, the flow or capacity, the water temperatures and the maximum outdoor temperature: we will send you a proposal and a quote.
