You can now optimize CO₂ transcritical refrigeration systems with Coolselector®2

Friday, 13 November, 2020

Thousands of refrigeration professionals use Coolselector®2 every day to help them design and optimize their air conditioning and refrigeration systems. The software provides unbiased calculations based on operating conditions, so you can select the best components for your design. Now, we are excited to expand what kinds of systems you can calculate for.

With the latest update, you can now calculate components for transcritical high-pressure side systems from an application perspective. This allows you to select additional components with a better overview, giving you a more complete picture of your design. You can plan the overarching framework for your transcritical system and select optimal expansion valves, helping you maximize efficiency. You’ll also save time and ensure the system’s structural integrity.

Customize to your needs

We’ve made it easy to configure different system layouts, dimension components, and determine system performance under different operational conditions. You can configure anything from a transcritical system with a high-pressure valve and a gas bypass valve to a system with parallel compressor operation, high-pressure lift ejectors, and liquid ejectors.  Simply determine the right valves based on load calculations and real-life situations. Then, pick the solutions you want to try, see the COP value change, and choose what works best for you.

If you’re working with low-pressure lift ejector systems, component selection is straightforward—as they are a special base system.

Why choose CO2?

The benefits of using CO2 refrigeration systems are recognized worldwide. CO2 has a GWP (Global Warming Potential) of 1, which is significantly lower than many other refrigerants. And while CO2 requires high-pressure conditions, we can offer components and solutions that help you build a safe and reliable system.

Our full range of Multi Ejectors covers your needs for all system sizes—applicable in all climates. We offer system managers, pack and case controllers, electronic expansion valves, 3-way bypass valves for heat recovery, gas detectors, pressure and temperature sensors, line components, and much more. You can see all of our CO2-compatible products here.

Why choose CO2 as a refrigerant?

  • One solution across all climates
  • Lowest possible Global Warming Potential (GWP)
  • Smart solutions for high system efficiency
  • Proven in more than 30,000 transcritical CO2 systems worldwide
  • Industry-leading application support and guidance to choose the best solution

Coolselector®2 makes the component calculation for high-pressure transcritical CO2 systems quick and easy. Get started now. Download the latest version of Coolselector®2 for free at

You can get a thorough introduction to the new feature by watching our webinar on-demand.

1st session (24th Nov – 9 AM to 10:30 AM CET)

2nd session (24th Nov –4 PM to 5:30 PM CET)