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ECODESIGN
INTRODUCTION
The Ecodesign/ErP Directive (2009/125/EC) lays down new standards for more efficient energy use.
The Directive contains various regulations; as regards chiller products and heat pumps, the regulations of interest are
the following:
•
Regulation 2013/813, for small heat pumps (Pdesign ≤ 400 kW)
•
Regulation 2016/2281, for chillers and heat pumps with Pdesign > 400 kW
•
Regulation 2013/811, for heat pumps with Pdesign ≤ 70 kW.
The last-mentioned regulation (2013/811) regards the labelling (Ecolabel certification) of small heat pumps.
The other two regulations (2013/813 and 2016/2281) set seasonal efficiency targets that the products must comply
with to be sold and installed in the European Union (essential requirement for CE marking).
These efficiency limits are defined through ratios, which are respectively:
•
ηsh (SCOP), with reference to regulation 2013/813
•
ηsc (SEER) for comfort applications and SEPR for process applications, with reference to regulation 2016/2281.
As regards regulation 2016/2281, with effect from 1st January 2021, the required minimum efficiency limit will be raised
(Tier 2) from the current threshold (Tier 1).
The figure below schematically illustrates the correspondence between product and reference energy ratio.
Some notes and clarifications:
For comfort applications, regulation 2016/2281 sets the ηsc (SEER) ratio in two different operating conditions:
•
SEER calculated with machine inlet/outlet water temperature of 12/7°C (low temperature application),
•
SEER calculated with machine inlet/outlet water temperature of 23/18°C (medium temperature application).
The minimum efficiency requirement is the same, but can be met at condition 12/7°C or at condition 23/18°C, depend
-
ing on the application envisaged for the machine.
Regulation 2013/813 distinguishes two different types: at low temperature and at medium temperature.
The following refer to the application at low temperature: (low temperature application) all heat pumps whose maxi
-
mum delivery temperature for heating purposes is lower than 52°C with source at temperature of -7°C and -8°C wet
bulb (air-water unit) or inlet 10°C (water-water unit), at the reference design conditions for an average climate.For
these, the efficiency ratio is "low temperature application" (outlet water temperature 35°C).
For all the other heat pumps, the efficiency ratio is related to "medium temperature application" (outlet water temper
-
ature 55°C).
The ratios must be calculated according to the reference European heating season in average climatic conditions.
