Low GWP Chillers

GWP stands for Global Warming Potential and in terms of refrigeration gases – its potential as a greenhouse gas by comparing it to CO_2.

Example:

GWP of CO₂:1

Every 1kg of R410a is equivalent to 2088kg of CO₂

See the table below for more.

Why should I choose a low GWP refrigerant?

The refrigerant you choose can have an important effect on the energy efficiency of your chiller, the capital cost, operative costs and your green credentials.

Common refrigerants have risen in price by as much as 300% in recent times because they are not as environmentally friendly as alternatives.

The EU is phasing down the availability of HFCs by 79% between 2015 and 2030. This is the most crucial aspect of the F Gas regulation and affects all end-user markets.

In January 2020, the phase-down included a ban on new equipment with refrigerants with a GWP of >2500. On 1st January 2030, there will be a ban on the use of refrigerants, recovered, reclaimed and/or recycled with GWP>2500 for service and maintenance.

By 2030, only 21% of HFCs sold in 2015 will be available.

If you’re choosing a new chiller now, it’s important to consider all these aspects to future proof your plant and minimise the impact on the environment.

Refrigerant Selection

This table shows the GWP of the standard refrigerants used in process chillers, compared to the lower GWP refrigerants such as R32, R454b and R290.

The efficiency, cost and capital purchase figures are all in relation to R410a, for example, R32 is 7% more efficient at cooling than R410a, and is over 50% cheaper. The ongoing energy efficiency savings will outweigh the increased capital purchase over time as well as being better for the environment.