Manufacturing so-called “natural” refrigerants requires significant amounts of energy.
“The process of making refrigerant-grade CO2, propane, butane, and ammonia usually starts one of two ways – mining coal or fracking for natural gas. Then, to transform the raw materials into refrigerant products, they undergo a series of energy-intensive chemical processes.”
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But the energy drain doesn’t stop with manufacturing. CO2 is highly inefficient when deployed as a refrigerant in-store. “A study by US retailer Target showed that a store with a CO2 system consumed 20% more energy than a store using a conventional system in the same climate.”
Read on: Why Mother Nature Wouldn’t Defend Natural Refrigerants.