Understanding the benefits of R32 refrigerant in heat pumps——Part 2

Let us now turn to the make-up of this refrigerant. R32 is a single-component refrigerant which means it has no temperature glide. Refrigerant blends that have two or more components exhibit temperature glide but as R32 only has one molecule in its formation, its saturated liquid and vapor temperatures are the same. By removing the risk for the refrigerant to suffer from glide, the system can recharge and recycle with greater ease. This means that R32 refrigerant not only increases system efficiency (please see below) but less of the refrigerant is needed during operation, further reducing emissions.

High efficiencies & lower energy costs

A key benefit that R32 refrigerant can deliver is greatly improved efficiencies. Its ability to enable a heat pump to recharge and recycle more effectively than some other refrigerants means that the heat pump can run at much higher efficiencies. A more efficient heat pump is greener in operation, uses less energy and can help households reduce their energy bills.

To give specific examples of these high efficiencies in practice, we can look at OSB’s Aerona³ R32 heat pump range. The Aerona³ R32 13kW model achieves a SCOP of 5.41 (at 35ºC), a value which indicates that for each kW of electricity used to run the unit, the heat pump will produce over 5 times the amount of heat. These high performances can in turn realise higher financial returns for homeowners who claim the Government’s Renewable Heat Incentive. A heat pump which has a greater SCOP is producing more heat output for each unit of energy used which can result in higher RHI payments compared to those heat pumps with lower SCOP values.

Hopefully this blog has served to deliver some insight into R32 refrigerant, exploring its green, more sustainable credentials and understanding how these benefits extend into the products it is used within.

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