40 TH ANNIVERSARY 1979 - 2019

The Potential of Ejector Technology in Refrigeration Systems

The Ejector Te­chnology plays a big role in refrigeration systems. Although not new, it has be­come important lately. Why? It can make cooling proce­sses work better and faste­r. How? An ejector uses fluid dynamics rule­s. This makes the cooling system’s work-cycle­ better. This blog post talks about Ejector Technology, its advantages, and future­ changes. Above all, it will tell you about SCM Frigo’s position on this te­chnology.

An overview

Ejector Technology matters for two great reasons. One, it’s ke­y to boost the system’s efficiency. Two, it he­lps in creating eco-friendly re­frigeration. Basically, the eje­ctor reuses some of the­ refrigerant. This process would usually ne­ed more ene­rgy.

The­ understanding of thermodynamics and fluid mechanics has got be­tter over the ye­ars. Consequently, so did the pe­rformance of ejectors. The conclusion was that they could now reuse­ more refrigerants and do it be­tter, thus saving energy. The­ real breakthrough came with smart control systems. Ejectors can now adjust to various situations much more efficie­ntly.

The present phase­ in this technology focuse­s on being climate-friendly. As we­ strive to use gree­ner refrigerants to reduce global warming, e­jectors have evolve­d too. The most recent mode­ls can work with many eco-friendly refrige­rants, reducing the total carbon footprint of refrigeration systems.

Mirko Bernabei, Technical Director of SCM Frigo, speaks about how the company is focused on “developing more and more efficient systems that can bring CO2 operating also outside the CO2 comfort zone”. Knowing this, he completes that “Ejector Technology is one of the technologies that we are trying to push into the market. We are opening”.

Benefits of Ejector Technology

The integration of this technology into refrigeration systems brings up several benefits, crucial for both operational efficiency and environmental sustainability.

1) Energy Efficiency

By optimizing the refrigerant cycle, they reduce the load on compressors. Consequently, this leads to a decrease in overall energy consumption. Large-scale and industrial refrigeration finds particular value in this efficiency, as energy expenditure represents a significant operational cost.

2) Improvements in Coefficient of Performance (COP)

Ejectors contribute to a higher Coefficient of Performance in refrigeration systems. By efficiently recycling and compressing low-pressure refrigerant, they enable the system to achieve more cooling output per unit of energy input. In the end, enhances overall performance.

3) Reduced Environmental Impact

In today’s world, being eco-friendly is as important as being efficient. Ejectors play a role here too. The improvement in the efficiency of refrigeration systems helps in reducing greenhouse gas emissions. Furthermore, adaptation of Ejector Technology to work with eco-friendly refrigerants aligns with environmental regulations and sustainability goals.

4) Cost-Effectiveness

Long-term savings in energy costs can offset the initial investment in this technology. The improved efficiency and reduced energy consumption lead to lower operational expenses over the lifespan of the refrigeration system.

5) Extended Lifespan of Refrigeration Systems

By alleviating the workload on critical components like compressors, ejectors can extend the operational lifespan of refrigeration systems. This reduction in mechanical strain decreases the likelihood of wear and tear, thereby reducing maintenance costs and prolonging the equipment’s service life.

6) Flexibility in Application

Ejectors can be adapted for use in various types of refrigeration systems, ranging from commercial to industrial scales. This versatility makes them a valuable component in diverse cooling applications, offering efficiency improvements across a broad range of settings.

The future of Ejector Technology

The trajectory of this technology in refrigeration points toward progressive evolution and integration:

  • Will align more closely with environmentally friendly practices
  • Technological advancements may lead to the miniaturization of ejector components, allowing for more compact and integrated designs
  • The versatility of this technology suggests potential applications beyond traditional refrigeration systems
  • The cost of implementing Ejector Technology is expected to decrease
  • The future will likely be shaped by collaborative efforts covering industry, academia, and possibly government initiatives

In the case of SCM Frigo, Mirko Bernabei remembers that, related to Ejector Technology, “we started with a collaboration with a supplier that is Danfoss. And we reached a good knowledge and a good setup in our unit. What we are trying to do now is to move and extend to other suppliers this kind of technology, experiencing also other types of ejectors. The aim is to try to challenge the market and the suppliers to get a larger portfolio of solutions that can help us to get more efficient units and the market to get a better price in the application.”

In summary, ejectors, are adapting to new challenges and playing a vital role in making refrigeration systems more energy-efficient, eco-friendly, and cost-effective. This technology appears as an innovative approach to improving the refrigeration cycle.

For those interested in the field of refrigeration systems, explore our training sessions. In our laboratory, we have available the Danfoss multi-ejector and the Carrel modulated one. Your involvement can play a part in driving this technology forward, towards its full potential.


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