Meeting the requirements of the Energy Saving Ordinance in an exemplary manner

The provisions of the Energy Saving Ordinance have been tightened up considerably since the start of the year, influencing the design of the heat supply in a building. Fossil-fuel-based solutions are thus scarcely capable of implementation any more.
Efficient air-to-water and air-to-air heat pumps are the only heat sources that ideally satisfy the statutory requirements. More than this, their permanently low operating costs make them an economically attractive alternative to conventional heating systems.

  • SEER of up to 6.7
  • SCOP of up to 3.9

The answer to the F-Gas Regulation

The new F-gas Regulation, which entered into force on 1 January 2015, is intended to reduce fluorinated greenhouse gases by 80-95% by the year 2050 and generate incentives for the use of climate-friendly alternatives. In order to achieve these goals, the volume of partly fluorinated hydrocarbons available on the market has been subject to initial limitations since 2015 and will subsequently be reduced step by step. This regulation affects party fluorinated hydrocarbons for the use as refrigerants and as propellants for insulating materials in special applications. This ‘phase-down’ is the core element of the new EU F-gas Regulation.

The answer to the F-Gas Regulation

The VRF systems with R410A: still an excellent choice

It is clear that the new requirements of the F-gas Regulation will lead to radical changes in the refrigeration sector, along with further new technological challenges.

The key question is this: will VRF systems remain the medium of choice in the future? The answer is a clear yes – for a whole host of reasons:

The VRF systems are only affected by the Regulation in terms of the phase-down, which will restrict the volume of refrigerant entering the market. The phase-down does not affect refrigerant that has already been produced, is already on the market and is being re-used.

Systems with R410A can continue to be placed on the market without any restrictions. From 1 January 2020, only the installation of new systems with a GWP (Global Warming Potential) of over 2,500 will be prohibited. R410A features a GWP of 2,088 and is therefore considerably below this limit value.

Learn more about GWP

VRF systems can continue to be operated and maintained without any restrictions, provided that the refrigerant in these systems has a GWP value below 2,500. The R410A used in Mitsubishi Electric systems has a GWP of 2,088. Modern VRF systems that are properly installed also feature very low rates of refrigerant loss caused by leakage, amounting to less than 1% per year.

Thanks to their high energy efficiency, VRF systems ensure a low level of energy consumption and thus contribute indirectly to reducing greenhouse gas emissions. The new City Multi outdoor units have been developed with a focus on seasonal efficiency, resulting in efficiency improvements of up to 47% in cooling mode and up to 21% in heating mode.

Mitsubishi Electric products must also meet the strictest requirements in terms of operating reliability and the highest demands relating to energy efficiency. The potential applications of alternative refrigerants and new technologies are subject to ongoing testing and further development according to these conditions.

The Hybrid City Multi system (HVRF) uses R2 technology to combine the benefits of a direct evaporation system with those of a water-based system. The advantages of this are clear: this system ensures that you are ideally prepared for future requirements. Thanks to the significantly lower volume of refrigerant, we are already making an active contribution to reducing emissions of fluorinated greenhouse gases today.

The (relative) Global Warming Potential, known as GWP, states the extent to which a specific volume of a greenhouse gas contributes to global warming. In line with the definition, the mean warming impact is generally considered over a period of 100 years.

Carbon dioxide provides the reference value, with a Global Warming Potential of 1 according to the definition. In terms of the contribution made to the greenhouse effect by a specific volume of the gas that is emitted into the atmosphere, the GWP value indicates how many times stronger or weaker this contribution is compared with that made by an identical volume of CO2. For example, methane has a Global Warming Potential of 23 over a time scale of 100 years. That means that 1 kilogramme of methane would have 23 times the impact on the greenhouse effect over this period than 1 kilogramme of CO2.

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