28th January 2018

Ammonia Absorption Chiller for Industry: Sustainable Cooling with Ago Congelo

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-40°C Cooling from waste heat

Ammonia Absorption Chiller – Ago Congelo | Sustainable Cooling from Waste Heat

In an era of rising energy costs and environmental concerns, the “Ago Congelo” ammonia absorption chiller from Vamtec delivers a revolutionary solution for eco-friendly cooling solutions. This advanced ammonia/water absorption chiller provides cooling to -40°C with waste heat, leveraging excess heat from industrial processes, combined heat and power (CHP) plants, or gas turbines. Unlike traditional compression chillers that consume significant electricity, the Ago Congelo prioritizes energy-efficient chillers, slashing operational costs and cutting carbon with Vamtec chiller technology. 

Why Ammonia Chillers Are the Future of Sustainable Cooling 

With soaring electricity tariffs and accessible heat from decentralized power generation, ammonia chillers for industry offer a cost-effective alternative to conventional systems. The Ago Congelo, a sustainable industrial chiller, transforms waste heat—an often-untapped byproduct—into an opportunity for low-cost ammonia chillers. Its minimal electricity demand reduces cooling energy costs while aligning with global decarbonization goals, making it ideal for industries like food processing, pharmaceuticals, and ammonia chillers in data centres

How the Ago Congelo Delivers CHP-Powered Cooling Systems 

The Ago Congelo harnesses the ammonia/water absorption cycle for efficient, low-energy cooling. Waste heat from sources like CHP plants or industrial exhaust drives the process, separating ammonia from water in a generator. The ammonia vapor condenses, then evaporates at low pressure in the evaporator, absorbing heat to cool to -40°C with waste heat. A small circulation pump—its only electrical component—reabsorbs the ammonia, completing the cycle. This design ensures robust performance in extreme conditions, offering reliable waste heat cooling systems with minimal grid dependency. 

Key Benefits of the Ago Congelo: Green Cooling 

  • Cool to -40°C with Waste Heat: Perfect for specialized industrial cooling needs. 
  • Waste Heat Cooling Systems: Converts excess heat from CHP plants into valuable refrigeration. 
  • Energy-Efficient Chillers: Minimal electricity use reduces cooling energy costs and environmental impact. 
  • Zero GWP Ammonia Chillers: Ammonia, a natural refrigerant, has zero global warming potential (GWP). 

These features make the Ago Congelo ideal for applications requiring sustainable cooling for farms, cold storage, chemical manufacturing, and ammonia chillers in data centres

Industries Transforming with Sustainable Industrial Chillers 

The Ago Congelo excels across diverse sectors. In agriculture, it supports sustainable cooling for farms by preserving perishables at ultra-low temperatures without straining electrical grids. For ammonia chillers in data centres, it repurposes server-generated heat for energy-efficient cooling, ensuring peak performance while reducing cooling energy costs. Chemical plants benefit from its ability to handle high ambient temperatures, delivering consistent low-cost ammonia chillers. This versatility positions the Ago Congelo as a cornerstone of modern waste heat cooling systems

Vamtec’s Expertise in Ammonia Chiller Maintenance 

With over 25 years of experience, Vamtec leads in zero GWP ammonia chillers and maintenance practices. Beyond cutting-edge equipment, we provide end-to-end services—planning, installation, commissioning, and onsite training—to ensure seamless integration. Our preventative maintenance contracts and lithium bromide analysis (for other chiller types) optimize performance and longevity. Alarm management systems enhance uptime, making Vamtec a trusted partner for businesses prioritizing eco-friendly cooling solutions

Advantages for Your Business

Choosing the Ago Congelo means investing in low-cost ammonia chillers that deliver measurable returns. Its CHP-powered cooling systems reduce reliance on expensive electricity, while its natural refrigerant chillers align with green certifications. For companies searching for “sustainable industrial chiller” or “waste heat cooling systems,” the Ago Congelo offers a high-performance, cost-saving option that meets both economic and environmental needs. 

The Path to Ago Congelo: Green Cooling 

As electricity prices climb and renewable energy gains traction, ammonia chillers for industry are reshaping the cooling landscape. The Ago Congelo not only reduces cooling energy costs but also supports a circular economy by reusing waste heat. Whether optimizing a factory, farm, or data centre, this sustainable industrial chiller offers a scalable, efficient path to eco-friendly refrigeration

Ready to revolutionise your cooling strategy? Contact Vamtec today to explore how the Ago Congelo ammonia absorption chiller can deliver energy-efficient, eco-friendly cooling tailored to your needs.


Solutions to Reduce Cooling Energy Costs and Save the Environment 

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  • Reduce Cooling Energy Costs: Utilize CHP waste heat for cost-effective cooling. 
  • Low Maintenance and Repair Costs: High reliability and long durability. 
  • Energy-Efficient Chillers: Trigeneration improves efficiency compared to separate cooling systems. 
  • Natural Refrigerant Chillers: Pure ammonia and distilled water with no added chemicals. 
  • Government Subsidies: Eligible for funding due to its eco-friendly design. 

Ready to revolutionize your cooling strategy? Contact Vamtec today to explore how the Ago Congelo ammonia chiller for industry can deliver energy-efficient, eco-friendly cooling tailored to your needs. 


Exemplified design of an ago congelo®

Description/Model 50 100 150 250 500 750 1000
Heat capacity (cooling water and waste heat of the CHP plant) 105/82°C 109 217 326 544 1087 1631 2175
Cooling capacity +1/-5°C 50 100 150 250 500 750 1000
Re-cooling capacity +25/+30°C 159 317 476 794 1587 2381 3175
Electric nominal output 5.5 7.5 7.5 11.0 18.5 30.0 30.0
Electric nominal output summer 4.19 5.57 7.04 9.84 16.29 22.28 28.01
Electric nominal output winter 2.36 2.63 3.12 4.14 6.46 8.60 10.61
Heat ratio Q0/QH 0.46 0.46 0.46 0.46 0.46 0.46 0.46

Figures in kW