WPA Mini
Industrial Chiller 324-580 kBTU/hr
Air-cooled industrial liquid chiller
Cooling Capacity
324 – 580 kBTU/hr
Compressors
Scroll
Protection
Refrigerant
Liquid chillers designed for process cooling applications operating 24/7, 365 days a year, air-cooled and equipped with two refrigeration circuits and tandem/trio scroll compressors optimized for R410A refrigerant, plate or shell-and-tube evaporators, and cooling capacities from 324 to 580 kBTU/hr.
Cosmotec’s experience in process cooling applications has led to the development of this range of industrial chillers, designed to meet the wide operating limits (both on the ambient side and the process side) required by the latest energy-saving technologies.
All chillers in the WPAmini range are characterized by high levels of energy efficiency (Class A or B) and comply with the requirements of the 2009/125/EC Ecodesign ErP 2021 Directive.
The Integrated Free Cooling version, available across the WPA range, also provides significant energy savings, particularly in installations located in cold or temperate climates.
Even in the Low Noise version, ideal for installations close to residential areas, our units maintain high performance and excellent energy efficiency while ensuring low sound emissions.
The inclusion of an Electronic Expansion Valve (EEV) optimizes refrigerant evaporation temperature and pressure, increasing efficiency under partial load conditions and contributing to an extended operating range for the unit.
The Micro-Channel condensers are made entirely from aluminum and specifically designed to maximize chiller performance. This design helps reduce overall dimensions while minimizing the refrigerant charge. For enhanced corrosion resistance, an e-coating protective treatment is also available as an option.
Low GWP (Global Warming Potential) version
The WPA units are available with the low-environmental-impact refrigerant R454B, which ensures a reduction in global warming potential (GWP = 467). Classified as A2L, R454B is non-toxic but mildly flammable, in safety group PED 1.
Free Cooling
WPAmini chillers are available with an Integrated Free Cooling version, which provides significant energy savings, particularly in applications requiring high cooling fluid temperatures (such as plastics processing) and in installations located in cold or temperate climate regions.
Utilising outdoor air to cool the fluid, the Free Cooling system can entirely replace the refrigeration circuit, thereby allowing the compressors to be deactivated.
Based on the climatic conditions, the WPAmini chiller will use the most suitable operating mode from:
- Total Free Cooling: when outdoor air temperatures are low, the fluid is cooled entirely by the ambient air. Energy consumption is minimized, as only the variable-speed fans and modulating valves are required to operate.
- Compressor mode (DX): the process thermal load is handled by the refrigeration circuit.
- Mix Mode: reduces energy consumption by transferring part of the thermal load to the ambient air. This solution allows the compressors to operate at partial capacity, as they only need to provide the remaining cooling capacity not covered by free cooling.
Broad operating limits
Every application has different requirements based on ambient temperature, fluid temperature, positioning, noise level, etc. Cosmotec is able to meet the most diverse needs, thanks to a wide range of options and the possibility of extending the operating limits of the WPAmini series chillers, if required.
Very hot and dusty environment
WPAmini chillers are fitted with metal air filters to protect the condensers from dust and dirt. Operation is possible up to 131°F with the Unloading function. 100% cooling capacity is guaranteed up to 113°F. If the temperature rises, the Unloading function reduces the load on the compressors without switching them off.
Very cold environment
The compressor compartment is closed and heating elements are installed to protect the electrical panel, compressors, evaporator and the entire hydraulic circuit. The Free Cooling reaches down to -40°F (in a special version) with components specifically selected to guarantee a long life for the entire chiller.
High-temperature water applications (plastic)
The cooling circuit is specially designed to achieve high delivery temperatures. The compressor has wide operating limits and a high suction temperature.
Applications with cold water (Food, Beverage, biogas)
The refrigeration circuit is designed to reach low supply temperatures. The thickness of the thermal insulation has been increased, and the anti-freeze system is standard to preserve the refrigerant and hydraulic circuits in both operating and stand-by modes.
Integrated Hydronic Group (option)
The hydronic group includes the main hydraulic components and is available in several configurations: with a single or double centrifugal pump, high or low head, fixed or inverter-controlled speed, and thermal storage tank.
Perfect applications for this product
Other coolers you might be interested in
- AIR-COOLED R1234yf
WLA Compact
APPLICAZIONE INDUSTRIALE 3,4–17,1 kBTU/hr Find out more: WLA Compact - AIR-COOLED R513A
WRA
APPLICAZIONE INDUSTRIALE 16 – 75 kW Find out more: WRA - AIR-COOLED R32
WLA Precision
APPLICAZIONE INDUSTRIALE 205 - 546 kBTU/hr Find out more: WLA Precision - AIR-COOLED R32
WPA Mini
SCROLL COMPRESSORS 324 – 580 kBTU/hr Find out more: WPA Mini - AIR-COOLED R454B
WPA
SCROLL COMPRESSORS 563 – 1.911 kBTU/hr Find out more: WPA - AIR-COOLED R513A R1234ze
WSA/WSI
SCREW COMPRESSORS 955 – 6.348 kBTU/hr Find out more: WSA/WSI - WATER-COOLED R513A
WSW
SCREW COMPRESSORS 805 – 5.216 kBTU/hr Find out more: WSW - FOR OIL COOLING –
ORA
APPLICAZIONE INDUSTRIALE – Find out more: ORA
Speak with one of our experts and find the ideal cooling solution for your system.
Our specialists are available to provide you with a detailed analysis and dedicated technical consulting.