Selection Criteria Refrigerated Display Cabinets

Methodology

Topten.eu presents the most energy efficient commercial display refrigerators and freezers on the European market. All listed products use natural climate-friendly refrigerants.

Scope

The products listed:

  • are plug-in cabinets (remote cabinets are not considered)
  • are very likely to have doors or lids (because open cabinets cannot meet the efficiency criteria)
  • are available on the European market
  • are for display and selling of foodstuffs
  • are separate from beverage coolers (link) and ice cream freezers (link)

Technical criteria

All models on Topten.eu meet the following criteria:

  • Natural refrigerant with global warming potential (GWP) below 3 (e.g. R290/propane, R600a/isobutane, R744/CO2)
  • Maximum draft energy index as given in the following table:
Category Draft energy index
Horizontal supermarket freezer cabinets
max. 50

Vertical, semi-vertical and combined supermarket freezer cabinets:
- Small counter top freezers (TDA < 0.33 m2)
- Medium cabinets* (0.33 m2 <= TDA < 2.00 m2)
- Large cabinets* (TDA >= 2.00 m2)

-
max. 10
max. 30
max. 60

Horizontal supermarket refrigerator cabinets max. 50
Vertical, semi-vertical and combined supermarket refrigerator cabinets max. 50

* no display area on side walls

Energy consumption

  • Measurement at climate class 3 (25°C, 60% relative humidity)
  • Temperature class must be one of the following: M1, M2, H1, H2, L1, L2 or L3

Test norm for energy consumption

  • Primarily according to EN ISO 23953-2:2015
  • In a transitional phase, measurements are also accepted according to:
    • EN ISO 23953-2:2005/A1:2012
    • EN ISO 23953-2:2005
    • For vertical chilled cabinets, energy consumption is multiplied by a factor of 1.1 (no correction for frozen cabinets or chests). The correction factor accounts for the higher number and longer duration of door openings under EN ISO 23953-2:2005 /A1:2012.
  • In a transitional phase, the temperature class requirement does not apply to models submitted before May 2015

Data sources

Data according to the above standards is provided by manufacturers.

Calculation of the draft energy index (EEI)

EEI = (AEC/SAEC)*100 = (TEC * 365 / ((M + N * Y) * 365)) * 100
Category Value for M Value for N Value for Y
Vertical, semi-vertical and combined supermarket freezer cabinets 8.5 19.1 TDA
Horizontal supermarket freezer cabinets 4.2 9.8 TDA
Vertical, semi-vertical and combined supermarket refrigerator cabinets 9.1 9.1 TDA
Horizontal supermarket refrigerator cabinets 3.7 3.5 TDA
TEC = energy consumption over 24h
V = net volume in litres
TDA = total display area in m2

Order of presentation

Products are ranked according to draft energy index. The order of presentation can be changed by clicking on the rows' headings. Compare models by checking them and clicking on compare.

Glossary

Brand, Model, Other models

Brand with link to website. All other models (different sizes etc.) that are named meet the Topten technical criteria as well.

Electricity costs

Costs for electricity during product's life time. Assumptions:

  • Typical life time: 8 years
  • Annual energy consumption: Value from product list in kWh/year
  • Tariff of electricity: 0.2 €/kWh (there however can be large differences depending on country or electrical utility)

Total display area

Total display area (TDA) in m2.

Net volume, Gross volume

Net / gross volume in liters.

Storage temperatures

Storage temperature range in °C.

Temperature class

Temperatures measured inside the cabinet during the energy consumption test.

M1 -1°C to +5°C
M2 -1°C to +7°C
H1 +1°C to +10°C
H2 -1°C to +10°C

Max. temperatures of warmest m-pack:
θ ah (highest point) θ al (lowest point)
L1 -15°C -18°C
L2 -12°C -18°C
L3 -12°C -15°C
S other

Energy

Annual energy consumption in kWh/year. Accepted measuring protocols see above.

Refrigerant

  • R600a (isobutane, natural climate-friendly refrigerant)
  • R290 (propane, natural climate-friendly refrigerant)
  • R744 (CO2, natural climate-friendly refrigerant)
  • Inefficient models: R134a, R404A or R507 (fluorinated refrigerants with high global warming potential)

Cooling

  • Static
  • Forced-air

Ambient temperature

Suitable ambient temperature range in °C as recommended by the manufacturer.

Dimensions

Width x depth x height in cm.

Countries available

This item displays the availability of models in European countries according to producers’ information. "EU" means that the model is available in all or most European countries. If the model is available in a number of countries only they are indicated by country codes according to ISO. "On demand" means that producers could not indicate the availability and that consumers have to ask in their countries on their own.

Infoplus

Publications

  • Commercial and Professional Refrigeration Products: Promoting Energy Efficiency with Legislation, Empowered Stakeholders and Rebates. Eva Geilinger, Eric Bush. EEDAL 2015, presentation and paper.
  • Best available technology of plug-in refrigerated cabinets, beverage coolers and ice cream freezers and the challenges of measuring and comparing energy efficiency. Eva Geilinger, Martien Janssen, Per Henrik Pedersen, Paul Huggins, Eric Bush. EEDAL 2013, presentation and paper.

Standards and labels

  • European Committee for Standardization (CEN) and European Committee for Electrotechnical Standardization (CENELEC), CEN-CENELEC
Energy label and ecodesign requirements: Other public product lists with standard data:

Links

  • eceee, the european council for an energy efficient economy, provides a status overview on all products in the Ecodesign & Energy Labelling process.
  • Coolproducts informs about the EU ecodesign process. It is a coalition of NGOs' campaign for a stronger, fast Ecodesign Directive to save the climate and money.

 

Manufacturers and dealers are kindly asked to contact info(at)topten.eu to inform about more products meeting the Topten selection criteria.

 

02/2017 Hepp