In 1995 Eurovent launched
the first European chiller certification program with the announced goals to
provide a common playing field to manufacturer, promote energy efficiency and
educate end user. The continuous effort of the industry and independent
laboratories helped over the years to shape a strong well recognize program and
to lead the way for upcoming legislation.
Energy Labeling since 2005
chiller program introduced the first energy label for chiller based on energy
efficiency restricted until that moment to household appliances in the
regulation. The classification scheme follows the A to G approach used in the
European Energy Labeling regulations for household appliances while the class’s
thresholds were defined and revised by the participants to promote energy
efficient products, phase out non- efficient products and incentivize
Development of a European
Seasonal Energy Efficiency Ratio
seasonal efficiency ratio presents another effort from Eurovent and the chiller
certification program participant's to provide simple and representative
selection criteria to help the purchaser choose more efficient products.
Efficiency at standard conditions and energy labeling are great tools to select
efficient products but they only reflect the efficiency of the product under
standard conditions at full load which is practically insignificant over the
real operating conditions of the product. The European Seasonal Energy
Efficiency Ratio (ESEER) is a weighed formula enabling to take into account the
variation of EER (Energy Efficiency Ratio) with the load rate and the variation
of air or water inlet condenser temperature as follows
ESEER=A × EERA + B × EERB + C × EERC + D × EERD
Air temperature at condenser inlet (air
Water temperature at condenser inlet (water
the ESEER methodology is inspired by ARI IPLV,
the conditions and the weighing coefficient were determined after a study for
European climate and European buildings.
As shown in
Figure 1 the discrepancy between Energy Efficiency
ratio at nominal condition and the ESEER, and the fact those units with the
similar EER have different values of ESEER summarize the added value of this
approach. The ESEER should be the primary criteria to select a unit with better
performances at operating temperature conditions and part load.
Figure 1. ESEER vs. EER Eurovent 2012
certified data for air cooled chillers
The ESEER is
largely embraced by the market and become recognized as a major selection
criterion. The ESEER certification also constituted experience that helped
during the study for Ecodesign
regulation Lot 6 especially for determination of minimum energy efficiency
requirement and possible threshold for labeling.
Energy use of pumps and
fans impact on chiller performances
of EN14511 was ratified on the 19th of July 2011 and published beginning of
2012. The new version of EN 14511-2011 advocates that the efficiency of the
pump whether it is an integral part of the unit or not is a function of its hydraulic
power instead of the default value.
chiller performances were certified as “gross” values measured when the pump is
not running for units with integral pumps. This choice was made as the previous
methodology (using a default value) was unrealistic and penalizing especially
method is more realistic, the chillers program participants decided to fully
apply this new version starting from the 2012 certification campaign. The new
performances declared based on this new version of the standard were published
on the ECC website by March 2012.
Figure 2. Distribution of the difference between 2012 net data and 2011
gross data in percentage (in horizontal axis). ESEER = European Seasonal Energy
Efficiency Ration, EER =Energy Efficiency Ratio, Pc = Cooling.
As shown in
Figure 2 a significant difference between thermal
performances (Cooling/Heating capacities, EER/COP and ESEER) published
according to EN 14511:3-2011 and those certified during the previous campaigns
(calculated according to EN 14511:3-2007 with exception of heat exchanger
pressure drop & water pump efficiency) can be observed.
also advocates for the adoption of the same mythology for Fan’s as minimum
efficiency are already defined in the regulation 327 for lot 11. This approach
will guarantee harmonization between the different EupLots
and to have a better transcription of the real performance of the unit.
Ecodesign Directive chillers are affected by 3 studies which are Lot 1 Boilers
and combiboilers, ENTR Lot 1 Refrigerating and freezing equipment and ENTR
Lot 6 Air-conditioning and ventilation systems. The Eurovent product group for
chillers heavily participated in the work done for these lots through position
papers, meeting with the consultants in charge of the preparatory study and
participation in the stakeholders meeting. Eurovent help bringing accurate data
and information about the state of the art of chiller industries and the
forecasted technological developments in this field. The work done by Eurovent
certification on the development of a seasonal energy efficiency ratio in
cooling and later on in heating (ESCOP
project) helped pinpoint the different challenges for the instituting such
factors. The certification committee for chiller also started working by
creating a technical committee in order to tackle the different issue for
starting the certification of performances required by the regulation that will
emerge from the lots sited above.
certified data easy available for consumer and consultant was always a priority
for Eurovent. Our interactive web site, created since the launching of the
company helps bring reliable data. In addition to the certified data a
dedicated description page for each certification program containing the outlet
of the program, definitions and rating conditions is made accessible and
constantly updated to help visitors understand the value and the consistency of
the certified data.
Eurovent launched a widget called Certiflash designed as a service bringing
added value to the community of consultants, design engineers, specifiers,
architects, buyers, contractors, developers looking for quick and real-time
access to HVAC products data and to get individual certificate for HVAC
on the three popular web browsers and on iPhone, Blackberry and Android mobile
phones, Certiflash is the guarantee to have a permanent access to certified
data and to generate individual certificate that can be used to complete
applications for local incentive scheme or to obtain a building energy
also part of a project called CLE@
that aims to feed on a regular basis numerous building thermal/energy simulation
software. By doing so, Eurovent certified products and associated performance
data are imbedded and directly used in building calculation engines which is
very helpful to consultant at the stage of product selection. This project
comes as a response for the implementation of EPBD directive in different EU
countries (RT 2012 in France) that requires the declaration of an important
amount of performances.
 ARI IPLV” : Integrated Part Load Value by AHRI [reference : AHRI Standard 550/590 (I-P), see http://www.ahrinet.org/App_Content/ahri/files/standards%20pdfs/AHRI%20standards%20pdfs/AHRI%20Standard%20550-590%20%28I-P%29-2011.pdf]
 Directive 2009/125/EC of the European Parliament and of the Council of 21 October 2009 establishing a framework for the setting of ecodesign requirements for energy-related products (recast).
 “Eup Lots” : Lots for “Energy using Products directive”, previous name of “Energy related Products directive” [reference : http://ec.europa.eu/energy/efficiency/studies/ecodesign_en.htm] where scope has been splitted per families of products, grouped in so called Lots.
 Directorate-General for Enterprise and Industry at the European Commission.
 “ESCOP”: European Seasonal Coefficient of Performance.
 “CLE@”: Association managing databases (issued from Promodul and Edibatec associations): [reference : http://www.promodul.fr/sites/default/files/Juin_2012-Lettre%20Information%20CLEA.pdf]