How does an HC system reduce greenhouse gas emissions?
There are two factors involved: Firstly, using hydrocarbons reduces the Direct greenhouse gas (GHG) emissions. This is due to the low Global Warming Potential (GWP) of HCs of just 3, compared to a GWP of 1,410 for HFC-134a, and even higher values for other chemical refrigerants. Why is this important? As an example, from a typical supermarket refrigeration system 5 to 10% of the total refrigerant charge is emitted to the atmosphere every year. Assuming that leakage rates are the same, hydrocarbons will thus spare the planet tonnes of greenhouse gases compared to any other chemical refrigerant currently used. Secondly, HCs also lower the Indirect GHG emissions by maximising energy efficiency through a combination of factors, including their favourable thermodynamic characteristics, a higher Coefficient of Performance (COP), and a low condensing temperature. As an example, even when used in a secondary loop Mobile Air Conditioning system – to overcome any outstanding safety concerns – hy
