Static refrigeration

The assets of COLDINNOV static refrigeration

The ongoing growth in cooling requirements, whether industry-wide or in small facilities, faces critical challenges such as energy consumption and environmental impact. Cooling systems users are thus increasingly seeking to save energy on these compressor installations which represent up to 3/4 of their electricity consumption!

In addition, heat is very often present in the form of losses. To date, almost 90% of the waste heat produced is not used in another process. In the industry for example, these sources include incineration, furnaces and machines. Similarly in agriculture, the development of anaerobic digestion leads to the production of large amounts of heat from cogeneration.

It is also noted that these heat sources are most often located near areas where cooling is needed.

There is therefore considerable interest in using these waste heats, as well as producing cold in a more economical and ecological way. The COLDINNOV technology of cold production using recovered waste heat provides an innovative answer to these problems. In particular, our solution:

  • Improves the efficiency of refrigeration plants and therefore their profitability.
  • Can be used in addition to or in replacement of conventional refrigeration units.
  • Allows you to valorize and make profitable the thermal energy that is currently lost

Therefore, the COLDINNOV solution forms a promising method for improving energy efficiency in the field of refrigeration!

PIFAC, COLDINNOV industrial prototype of HECO/S type, static thermochemical cooling
PIFAC, COLDINNOV industrial prototype of HECO/S type

Some examples of applications:

Using the heat from biogas cogeneration with trigeneration

Biogas, a sustainable and fast-developing energy source

According to the French Ministry of Energy and Solidarity Transition, “the global deposit which can be mobilized by 2030 for anaerobic digestion has been evaluated at 56 GWh of primary energy in biogas production. It is composed of 90% agricultural materials.” As a result, biogas is therefore increasingly being developed in France and worldwide, particularly in the agricultural and agro-food sectors.

Today, we hear a lot about the addition of biomethane into the gas network. As a matter of facts, it is well adapted for large installations located near existing gas networks. However, most of the biogas produced is currently being valorized using cogeneration. This technique, which consists of burning biogas in a specific engine, produces 1/3 of electricity and 2/3 of heat.

The main obstacle encountered by this cogeneration technology is the difficulty to find a use to the heat produced. One part of it is often used to heat the digester, and another sometimes to heat rooms or greenhouses. However, most facilities are struggling to find a use for heat, especially during summer.

COLDINNOV thermochemical cooling develops biogas heat recovery

The COLDINNOV solution is a well-adapted answer to the current challenges of anaerobic digestion. Our thermochemical reactor allows, all year round, to value the heat resulting from cogeneration and to turn it into cold. This can for example be used for:

  • Air-conditioning premises,
  • Preserving crops,
  • Refrigerating agri-food products,

All this in a way which is sustainable, responsible, and financially interesting!

COLDINNOV also stands out by seeking to develop biogas boilers. Much cheaper and less demanding than biogas engines, they produce a large amount of quality heat. This heat, valorized using our thermochemical cold process, thus allows to refrigerate an installation with a great energy and financial efficiency.

Biogas plant near Wremen (Germany), Wikimedia Commons
Heat valorization is a major challenge of anaerobic digestion

Reducing energy consumption: a strategic challenge for the data centers

A few key figures:

The more than 500,000 existing data centers consume 1.5% of the world’s generated electricity, or 30,000 MW, the equivalent of 30 nuclear power plants. This energy is used to run computer servers, but also for a large part to cool them.

Indeed, to operate optimally the temperature of a server must be maintained around 35 °C. The coolant used must also be chilled to 25 °C before it can be released into the environment. These technical and legal obligations therefore require powerful and energy-intensive chilling infrastructures.

Thus, providing 100 kW of electricity to the servers in a data center requires producing 85 kW of cooling to chill them.

Due to a global energy mix relying widely on fossil fuels, data centers are responsible for 2% of global CO2 emissions. This figure is comparable to pollutant emissions from air traffic. The chilling of computer equipment alone contributes directly to 0.3% of total carbon emissions.

Datacenter Google, Wikimedia Commons
Decreasing the impact and cost of data center chilling involves the recovery of waste heat


Given this situation, COLDINNOV has developed its COLDATA solution.

The temperature of the fluids coming directly from the servers is too low for a direct use in our process. Our idea is thus to raise this temperature by using data center features:

  • The availability requirements of Tier III and Tier IV data centers require a redundancy of cooling systems and power sources.
  • One of the redundant energy sources is usually provided by a generator.
  • Data centers have very large sunny areas, conducive to the installation of thermal solar panels

In the case of a generator, 2/3 of the energy consumed is discharged in the form of heat. This can easily feed our reactor via an adapted collection circuit. Similarly, we can use thermal solar panels, which are performing and well suited to our needs.

Our solution is to replace all or parts of the cooling systems of a data center with refrigeration units equipped with the COLDINNOV reactor.

This technology guarantees a reduction in power consumption that is not directly useful to the servers, and therefore an improvement in the Power Usage Effectiveness (PUE) of the data center.

Download the COLDATA presentation leaflet