Propane as a Green Refrigerant: A Closer Look

As we delve into the world of refrigerants, one recurring theme emerges: how green are these substances? Let’s focus on Propane (R290), a naturally occurring refrigerant with a GWP (Global Warming Potential) of 3. Given its low GWP, it’s unlikely that Propane will face a ban as a refrigerant anytime soon. This makes it an intriguing solution for new chillers. 🌬️

However, there’s more to the story. Enter A2L refrigerants, like R454b. These alternatives boast considerably higher electrical efficiency. The question arises: should we be opting for these instead? 🤔

Let’s break it down with a real-world example. I recently conducted a comparison involving a 165 kW chiller operating at -8°C/-3°C in a maximum ambient temperature of 35°C. Here’s what I found:

Propane (R290):
Delivered price: £111,000
Electrical cost per kW of cooling: 20.0p
R454b:
Delivered price: £66,555
Electrical cost per kW of cooling: 14.4p
R32:
Delivered price: £70,287
Electrical cost per kW of cooling: 14.9p
Keep in mind that the delivered price includes delivery but not offloading and positioning, commissioning, or electrical and hydraulic installation.

The Verdict:

Both R454b and R32 exhibit similar levels of efficiency.
However, R290 (Propane), despite being up to 67% more expensive, will also cost up to 38% more to run.
So, while Propane remains a green choice, it’s essential to weigh the costs and efficiency trade-offs. Let’s continue the conversation! 🌟 hashtag#Refrigerants hashtag#Sustainability hashtag#Chillers hashtag#EnergyEfficiency

For more information on Propane as a Green Refrigerant: A Closer Look talk to Refcool Refrigeration Ltd