Household refrigerating appliances - Characteristics and test methods -- Part 3: Energy consumption and volume

EN-IEC 62552-3 specifies the essential characteristics of household and similar refrigerating appliances cooled by internal natural convection or forced air circulation, and establishes test methods for checking these characteristics. This part of IEC 62552 describes the methods for the determination of energy consumption characteristics and defines how these can be assembled to estimate energy consumption under different usage and climate conditions. This part of IEC 62552 also defines the determination of volume.

Haushaltskühlgeräte - Eigenschaften und Prüfverfahren - Teil 3: Energieverbrauch und Rauminhalt

Appareils de réfrigération à usage ménager - Caractéristiques et méthodes d'essai - Partie 3: Consommation d'énergie et volume

L'IEC 62552-3:2015 spécifie les caractéristiques essentielles des appareils de réfrigération à usage ménager et similaires, refroidis par convection naturelle interne ou par circulation d'air forcé, et établit les méthodes d'essai pour la vérification de ces caractéristiques.
La présente partie de l'IEC 62552 décrit les méthodes de détermination des caractéristiques de consommation d'énergie et définit comment elles peuvent être assemblées pour estimer la consommation d'énergie dans différentes conditions d'utilisation et climatiques. La présente partie de l'IEC 62552 définit également la détermination du volume.
Les normes IEC 62552-1, IEC 62552-2 et IEC 62552-3 annulent et remplacent la première édition de l'IEC 62552 publiée en 2007. Les normes IEC 62552-1, IEC 62552-2 et IEC 62552 3 constituent ensemble une révision technique et incluent les modifications techniques majeures suivantes apportées à l'IEC 62552:2007:
- Toutes les parties de la norme ont été largement réécrites et mises à jour pour tenir compte des nouvelles exigences d'essai, des nouvelles configurations du produit, de l'apparition de nouvelles commandes de produit électronique et d'équipements informatiques de collecte et de traitement de données de salle d'essai.
- La Partie 3 (la présente partie) fournit désormais une méthode permettant de quantifier chacune des composantes énergétiques pertinentes, ainsi que les approches permettant de les combiner pour évaluer l'énergie dans différentes conditions, en partant du principe que les différentes régions vont choisir les composantes et pondérations les plus applicables lors de l'établissement des critères de performances et d'efficacité énergétique tout en utilisant un seul ensemble de mesures d'essai globales.
- Pour les mesures de la consommation d'énergie dans la Partie 3 (la présente partie), aucune masse thermique (paquets d'essai) n'est incluse dans un compartiment, les températures de compartiment reposant sur la moyenne des capteurs de température de l'air (comparée à la température du paquet d'essai le plus chaud). La position des capteurs de température dans les compartiments non congelés présente également des différences importantes.
- L'essai de consommation d'énergie dans la Partie 3 (la présente partie) s'appuie désormais sur deux températures ambiantes spécifiées (16 °C et 32 °C).
- Un essai d'efficacité d'énergie de traitement de charge a été ajouté dans la Partie 3 (la présente partie).
- Un essai d'efficacité d'énergie de fabrication de glace du type à réservoir a été ajouté dans la Partie 3 (la présente partie).
- Les méthodes de mesure de la surface et du volume de stockage des étagères ne sont plus incluses. Dans la Partie 3 (la présente partie) la mesure du volume a été révisée pour donner le volume interne total avec uniquement les composants nécessaires au bon fonctionnement du système de réfrigération considéré comme étant en place.
- Des essais (de performances (Partie 2) et d'énergie (Partie 3 (la présente partie)) ont été ajoutés pour les appareils de stockage du vin.

Gospodinjski hladilni aparati - Značilnosti in preskusne metode - 3. del: Poraba energije in prostornina

General Information

Status
Published
Publication Date
10-May-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
05-May-2020
Due Date
10-Jul-2020
Completion Date
11-May-2020

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SLOVENSKI STANDARD
SIST EN 62552-3:2020
01-junij-2020
Nadomešča:
SIST EN 62552:2013
Gospodinjski hladilni aparati - Značilnosti in preskusne metode - 3. del: Poraba
energije in prostornina

Household refrigerating appliances - Characteristics and test methods -- Part 3: Energy

consumption and volume
Ta slovenski standard je istoveten z: EN 62552-3:2020
ICS:
97.040.30 Hladilni aparati za dom Domestic refrigerating
appliances
SIST EN 62552-3:2020 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62552-3:2020
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SIST EN 62552-3:2020
EUROPEAN STANDARD EN 62552-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 97.030
Supersedes EN 62552:2013 (partially) and all of its
amendments and corrigenda (if any)
English Version
Household refrigerating appliances - Characteristics and test
methods - Part 3: Energy consumption and volume
(IEC 62552-3:2015 , modified)

Appareils de réfrigération à usage ménager - Haushaltskühlgeräte - Eigenschaften und Prüfverfahren -

Caractéristiques et méthodes d'essai - Partie 3: Teil 3: Energieverbrauch und Rauminhalt

Consommation d'énergie et volume (IEC 62552-3:2015 , modifiziert)
(IEC 62552-3:2015 , modifiée)

This European Standard was approved by CENELEC on 2020-02-24. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62552-3:2020 E
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SIST EN 62552-3:2020
EN 62552-3:2020
Contents Page

European foreword ........................................................................................................................................ 3

1 Modification to the Introduction .............................................................................................................. 4

2 Modification to Clause 3, "Terms, definitions and symbols" .................................................................. 4

3 Modification to Clause 5, "Target temperatures for energy determination" ........................................... 4

4 Modifications to Clause 6, "Determination of energy consumption" ...................................................... 4

5 Modification to Annex A, “Set up for Energy testing” ............................................................................. 5

6 Modifications to Annex B, “Determination of steady state power and temperature” ............................. 5

7 Modifications to Annex C, “Defrost and recovery energy and temperature change” ............................ 5

8 Modifications to Annex D, “Defrost interval” .......................................................................................... 6

9 Modifications to Annex F, “Energy consumption of specified auxiliaries” ............................................. 8

10 Modifications to Annex G, “Determination of load processing efficiency” ............................................. 9

11 Modifications to Annex H, “Determination of volume” ......................................................................... 10

12 Modifications to Annex I, “Worked examples of energy consumption calculations” ............................ 13

13 Addition of Annex ZA, “Chill compartment temperature control test” .................................................. 15

14 Addition of Annex ZB, “Normative references to international publications with their

corresponding European publications" ........................................................................................................ 16

15 Addition of Annexes ZZA, "Relationship between this European Standard and the

ecodesign requirements of Commission Regulation (EU) 2019/2019 aimed to be covered" ..................... 17

16 Addition of Annexes ZZB, "Relationship between this European Standard and the

energy labelling requirements of Commission Delegated Regulation (EU) 2019/2016 aimed

to be covered" .............................................................................................................................................. 18

17 Addition of Bibliography ....................................................................................................................... 20

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SIST EN 62552-3:2020
EN 62552-3:2020
European foreword

This document (EN 62552-3:2020) consists of the text of IEC 62552-3:2015 prepared by IEC/TC 59

“Performance of household and similar electrical appliances”, together with the common modifications

prepared by CLC/TC 59X “Performance of household and similar electrical appliances”.

The following dates are fixed:
• latest date by which this document has (dop) 2021-02-24
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-02-24
standards conflicting with this document
have to be withdrawn

This standard in combination with standards EN 62552-1:2020 and EN 62552-2:2020 will supersede

EN 62552:2013.

This standard shall be read in combination with standards EN 62552-1:2020 and EN 62552-2:2020.

EN 62552-3:2020 includes the following significant technical changes:

a) definition of the “regional function”, i.e. calculation formula for annual energy consumption for Europe;

b) some clauses have been completely modified, i.e. D.3, F.1 and H.2.2;
c) adding of H.Z1 and Figures H.Z1, H.Z2, H.Z3, H.Z4 and H.Z5.

Clauses, subclauses, notes, tables, figures and annexes which are additional to those in IEC 62552-3:2015

are prefixed “Z”.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under Standardization Request M/459 given to CENELEC by the

European Commission and the European Free Trade Association, and supports essential requirements of

EU Directive(s).
Endorsement notice

The text of IEC 62552-3:2015 was approved by CENELEC as a European Standard with agreed common

modifications.
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EN 62552-3:2020
1 Modification to the Introduction
Add the following paragraph:

"This standard was developed in relationship with Regulations (EU) 2019/2016 of 11.3.2019 on energy

labelling and (EU) 2019/2019 of 1.10.2019 on ecodesign for refrigerating appliances."

2 Modification to Clause 3, "Terms, definitions and symbols"
Add the following definition:
"3.1.Z1
low noise refrigerator

refrigerating appliance without vapour compression and with airborne acoustical noise emission lower than

27 A-weighted decibel referred to 1 pico Watt [dB(A) re 1 pW]"
3 Modification to Clause 5, "Target temperatures for energy determination"
Add the following subclause:
"5.Z1 Controllability of temperatures in a compartment

The standard does generally not include tests for the controllability of temperatures in a compartment (i.e.

how well the temperature is kept constant during changing environmental conditions without the user having

to adjust temperature control settings). The exception is the chill compartment for which a chill compartment

temperature control test has been included in Annex ZA."
4 Modifications to Clause 6, "Determination of energy consumption"

In 6.8.5, "Total energy consumption", delete the sentence "E expressed as an integrated energy value

aux
over a year".
Replace the seventh and eighth paragraph and Formula (4) with:

"The total annual energy consumption of a refrigerating appliance E (except for low noise refrigerating

total
appliances) can be given by:
E fE E+ E
{ }
total daily16°C , daily32°C aux
(4)
where

f is a regional function to give the annual energy based on daily energy at 16 °C and 32 °C. In

this standard this function is defined as:
f{E , E } = ( Day × E ) + (Day × E )
daily16°C daily32°C 16°C Daily16°C 32°C Daily32°C
where Day = Day = 365/2 days = 182,5 days;
16°C 32°C
see Annex I for examples by taking into account D = D = 365/2 d = 182,5 days;
16°C 32°C

aux is the annual energy from ambient controlled anti-condensation heater(s) as described in

Annex F. See I.5 for an example how to calculate this auxiliary.
The E shall be calculated in according the following equation:
total
E= 182,5× E +×182,5 EE+
total daily16°°C daily32 C aux

For low noise refrigerating appliances, the energy consumption shall be determined as provided for in

Formula 4, but at an ambient temperature of 25 °C instead of at 16 °C and 32 °C.
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EN 62552-3:2020

E , expressed in kWh/24h and rounded to three decimal places for the calculation of the AE is then as

daily
follows:
E = E25
daily

where E25 is E at an ambient temperature of 25 °C and derived by interpolation of the energy tests at the

target temperatures listed in Table 1."
5 Modification to Annex A, “Set up for Energy testing”

Replace the first paragraph of A.2.6.5, "Position of the temperature sensor in automatic ice-makers" with:

"An automatic ice-maker bin shall have a single temperature sensor located in the position specified as

follows for all energy tests:"
6 Modifications to Annex B, “Determination of steady state power and
temperature”
In B.4.3, "Case SS2 calculation of values", replace Formula (13) with:
∆Th
dfj−i
TT()−
SS 2−i av−endX−endY−i 
()tt−
end−−Y end X
" (13)"

In B.4.3, "Case SS2 calculation of values", replace item ΔTh under Formula (13) with:

dfj-i
ΔTh

dfj-i is the accumulated temperature difference over time in each compartment i in Kh as

determined in accordance with C.3.3 for the defrost and recovery period j commencing at

the end of Period X"
In B.4.3, "Case SS2 calculation of values", replace Formula (14) with:
Rt − Rt −∆t
end−−Y end X drj
CRt =
SS 2
()tt−
end−−Y end X
" (14)"

In B.4.3, "Case SS2 calculation of values", replace item Δt under Formula (14) with:

Δt is the additional compressor run time in h as determined in accordance with C.3.3 for

drj
the defrost and recovery period j commencing at the end of period X"
7 Modifications to Annex C, “Defrost and recovery energy and temperature
change”
In C.3.3, "Case DF1 calculation of values" add the following after the NOTE:

"During a load processing efficiency test, it is possible that one or more defrosts occur for which a

correction shall be made. This correction is based on splitting the defrost and recovery energy in a fixed

part and the energy used by the defrost heater:
Fixed defrost adder is:
ΔE ΔE−E
df−−adder, j df , j df heater, j
(19a)
where:
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EN 62552-3:2020

E is the energy used by the defrost heater during the defrost and recovery period j in Wh."

df-adder,j

In C.4, "Number of valid defrost and recovery periods", add the following note at the end:

"NOTE Z1 The defrost heater energy ΔEdf-adder,j and incremental defrost and recovery energy ΔEdf,i for new appliances

and appliances that have not been operated for some time could be initially low until the defrost heater energy stabilizes."

In C.5, "Calculation of representative defrost energy and temperature", replace Formula 22 with:

∑ df , j
j=1
∆E =F
df df
" (22)"

In C.5, "Calculation of representative defrost energy and temperature", add the following text below the line

∆E :
df,j

"F is a regional scaling factor which can be used to compensate for frost load and usage factor which

impacts the defrosts intervals. The value for F is set to 1,0."

In C.5, "Calculation of representative defrost energy and temperature", add the following text above

Formula (23):

"For correcting a load processing efficiency tests where one or more defrosts occurs, a representative

value for the fixed defrost adder is defined:"

In C.5, "Calculation of representative defrost energy and temperature", replace Formula 23 with:

∑ df−adder, j
j=1
∆=E
df−adder
" (23)"
8 Modifications to Annex D, “Defrost interval”
In D.2, "Elapsed time defrost controllers", replace Note 2 with:

"NOTE 2 The same timers could be used as compressor run time controllers or as elapsed time controllers,

depending on how they are configured in the refrigerating appliance."

Replace the entire subclause of D.3, "Compressor run time defrost controllers" with:

"For these controllers, the defrost interval is defined by the compressor run time (or on time in hours) (or

in some cases the compressor run time plus the maximum time allocated for defrost heater operation).

These controllers are only applicable to single speed compressors. The defrost interval is therefore

approximately inversely proportional to the total heat load on the refrigeration system (ambient

temperature and user loads plus any internal heat loads). The most common defrost run time controllers

range from 6 h to 12 h of compressor run time. Typically this would result in defrost intervals of the order

of 12 h to 30 h (elapsed time) at elevated ambient temperatures and somewhat longer defrost intervals

at lower ambient temperatures.

NOTE 1 The same timers could be used as compressor run time controllers or as elapsed time controllers,

depending on how they are configured in the refrigerating appliance.

If the run time controller is not accessible (or where it is not clear whether the controller is a run time

controller) or where the laboratory is not able to directly measure the controller operation and does not know

its run time, the value for the proxy run time shall be measured by testing as set out below. Any routine

energy tests or other tests may be used for this purpose.

Each measurement shall be undertaken over a whole defrost control cycle and tests shall be undertaken

in at least two different ambient temperatures in order to verify that it is a run time controller and to estimate

the value of t . The period selected shall comply with the following requirements:

prt
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EN 62552-3:2020
— The first defrost shall qualify as a valid defrost as specified in C.3;

— the test period shall include at least part of the subsequent defrost and recovery period that is initiated

automatically without any intervention (defrost heater on).

The estimated proxy run time of the compressor run time defrost controller for a given set of test data that

complies with these requirements is given by:
t tt+
prt, j crt,,j dh j
(25)
where

t is the estimated proxy run time of the compressor run time defrost controller for the test period

prt,j
starting with defrost and recovery period j in h;

t is the measured compressor run time in h from the initiation of defrost heater operation for

crt,j

defrost and recovery period j to the initiation of defrost heater operation for the subsequent

defrost and recovery period j + 1;

t is the time from the start of the defrost heater on until the compressor restarts in h during

dh,j

defrost and recovery period j where the timer advances during the heater operation;

otherwise a value of zero if the timer does not advance during the heater operation.

A common configuration is that the defrost heater is allocated a fixed maximum time of operation in the

timer defrost controller (for example 20 min). The actual heater on time will vary depending on the frost load

for the specific defrost. So the time between the heater off and the compressor on may vary, but the total

time from heater on to compressor on should be constant in this configuration. Where the laboratory has

any doubt about the appliance configuration, it is assumed that the defrost timer does not advance when

the defrost heater is on, so that only compressor on time is counted and the value of t is set to zero in

dhj
Formula (25).

Additional routine tests undertaken at other ambient temperatures and/or temperature control settings,

including user related loads such as door openings and small processing loads should be reviewed to

assess defrosting behaviour. The observed defrost interval should be consistent with the measured proxy

run time, otherwise it shall be classified as a variable defrost controller.

NOTE 2 These tests can be used to detect whether the run time controller is over-ridden by some other control

mechanism during normal use conditions.

To qualify as a compressor run time defrost controller, the coefficient of variation (standard deviation divided

by the mean) of the measured values for either compressor proxy run time t or compressor run time alone

prt,j

t shall be less than 5 % for the defrost intervals examined. Where the product does not comply with this

crt,j

requirement, it shall be classified as a variable defrost controller. The value of t used in subsequent

prt
calculations shall be the average of all measured values of t .
prt,j

Once confirmed, the proxy run time can be used to calculate the actual defrost interval (in elapsed time)

for any temperature control setting, ambient temperature and load processing condition, as a function

of the compressor run time. For all refrigerating appliances with compressor run time defrost controllers,

the percentage run time shall be reported for steady-state conditions in Annex B and the extra compressor

run time (in h) shall be calculated for defrost and recovery periods (in Annex C, Formula (21). The defrost

interval for each test condition and temperature control setting is given by:
tt−∆
prt dr t −∆t
crt dr
CRt CRt
SS SS
(26)
where
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EN 62552-3:2020

t is the estimated defrost interval (elapsed time) for each temperature control setting and

ambient temperature under test in h, including the impact of defrost and recovery

t is the representative measured proxy run time of the compressor run time defrost controller

prt
(in h) in accordance with Formula (25)

CRt is the compressor run time (as a percentage) during the steady-state operation for each

temperature control setting and ambient temperature under test as determined in B.3.3

or B.4.3

Δt is the representative incremental compressor run time (in hours) for defrost and recovery

in accordance with C.5 in accordance with Formula (25)

t is the representative time from the start of the defrost heater on until the compressor restarts

in h during a defrost and recovery period where the timer advances during the heater

operation, otherwise a value of zero

crt is the representative compressor run time in h from the initiation of one defrost heater

operation until the initiation of the next defrost heater operation (this can be determined from

rearranging Formula (25).

NOTE Z1 The exclusion of heater on time t and t is the default assumption for calculations in Formula (25) and

dh,j dh

Formula (26). If the defrost timer does not advance during the defrost heater operation or if the laboratory is unsure,

then the value of tdh,j and tdh is set to be zero for both equations. It is essential to apply consistently heater on time tdh,j

and t in Formula (25) and Formula (26)."

In D.4.2, "Variable defrost controllers – declared defrost intervals", replace the first bullet of third paragraph

with:
"— Δt shall not exceed 12 h at an ambient temperature of 32 °C (elapsed time)."
d-min
9 Modifications to Annex F, “Energy consumption of specified auxiliaries”

In F.2.5, "Calculation of power consumption", add the following sentence and Note Z1:

"The data as set out in Table F.1 shall be used.

NOTE Z1 Values (R1 to R30) are defined based on the weather data of Karlsruhe/Germany covering the years 1998

to 2007. Power values that are specific to these regional values (PH1 to PH30 for bins R1 to R30) are normally provided by

the product supplier or manufacturer."
Replace Table F.1 with:

Table F.1 — Format for temperature and humidity data – Ambient controlled anti-condensation

heaters
Relative RH band Probability Probability Probability Heater W Heater W Heater W
Humidity mid-point R at 16 °C R at 22 °C R at 32 °C at 16 °C at 22 °C at 32 °C
i i i
0 to 10 % 5 % 0,00 % 0,00 % 0,34 % P P P
H1 H11 H21
10 to 20 % 15 % 0,61 % 6,86 % 2,01 % P P P
H2 H12 H22
20 to 30 % 25 % 3,11 % 14,57 % 1,61 % P P P
H3 H13 H23
30 to 40 % 35 % 5,03 % 14,83 % 0,86 % P P P
H4 H14 H24
40 to 50 % 45 % 5,09 % 11,67 % 0,18 % P P P
H5 H15 H25
50 to 60 % 55 % 4,67 % 8,31 % 0,01 % P P P
H6 H16 H26
60 to 70 % 65 % 3,39 % 5,54 % 0,00 % P P P
H7 H17 H27
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EN 62552-3:2020
Relative RH band Probability Probability Probability Heater W Heater W Heater W
R at 16 °C R at 22 °C R at 32 °C
Humidity mid-point i i i at 16 °C at 22 °C at 32 °C
P P P
70 to 80 % 75 % 3,17 % 2,51 % 0,00 % H8 H18 H28
P P P
80 to 90 % 85 % 2,85 % 0,66 % 0,00 % H9 H19 H29
P P P
90 to 100 % 95 % 2,05 % 0,07 % 0,00 % H10 H20 H30
Replace Formula (40) and the text just above and below with the following:
"The heater power can be calculated as follows:
W ()R××P 1,3
heaters ∑ i H i
i=1
(40)
where

W is the annual average additional power consumption associated with the ambient controlled

heaters
anti-condensation heater;

R is a regional factor to indicate the probability of the i-th temperature and humidity bin in

Table F.1;

P is the average heater power associated with the i-th temperature and humidity bin in

h,i
Table F.1,

k is the total number of temperature and humidity bins used ( = 30 if all bins in Table F.1 are

used);

1,3 is the assumed loss factor (is the energy used by the heater (1,0) plus a loss component of

0,3 to account for heat leakage into the compartment and its subsequent removal by the

refrigeration system)."
10 Modifications to Annex G, “Determination of load processing efficiency”

In G 5.3, "Quantification of additional energy used to process the load", replace Formula 51 and the text

below with:
ΔE = (E−E )−P×−(t t )− z×ΔE − E
( )
additional-test end start after end start ∑∑i df-adder,i df-heater,ij
ii11
(51)
where

ΔE is the additional energy consumed by the refrigerating appliance during the test

additional-test
to fully process the loaded added as specified in Clause G.3;

E is the accumulated energy reading at the start of load processing efficiency test

start
as defined in G.4.1 in Wh;

E is the accumulated energy reading at the end of load processing efficiency test

end
as defined in G.4.4 in Wh;

P is the steady-state power consumption that occurs after the load has been fully

after
processed during the valid energy test period (Clause B.3 or Clause B.4) as
defined in G.4.4 in W;
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t is the test time at the start of load processing efficiency test as defined in G.4.1

start
in h;

t is the test time at the end of load processing efficiency test as defined in G.4.4

end
in h;

ΔE is the average defrost adder calculated in Annex C for all valid defrosts specified

df-adder,i
for defrost system i for the relevant ambient temperature;
is the number of defrost systems in the appliance;
z is a count of the number of defrosts that occur for defrost system i;

E is the sum of the defrost heater energy for the j defrosts that occur during the load

df-heater,ij
processing test for each defrost system i."

In G.5.5, "Load processing multiplier", modify first sentence of the second paragraph with:

"Where a load multiplier is used to estimate the additional energy associated with a processing load, it is

important to calculate a normalized value for E in order to correct for small variations in

input-nominal

compartment temperatures and ambient temperature conditions that occur during a test."

11 Modifications to Annex H, “Determination of volume”
Replace H.2.2, "Determination of volume" with:

"The volume shall take into account the exact shapes of the walls including all depressions or projections.

For through the door ice and water dispensers, the ice chute shall be included in the volume up to the

dispensing function.

The items below shall be considered as being in place and their volumes deducted:

a) The volume of control housings, including integral parts of it.

b) The volume of the evaporator space (which includes any space made inaccessible by the evaporator)

(see H.2.3).

c) The volume of air ducts required for proper cooling and operation of the unit.

d) Space occupied by shelves moulded into the inner door panel.

e) The volume of any insulating partition between compartments and/or sub-compartments. An

average thickness of greater than 5 mm is considered to be an insulating partition.

For clarification, the through the door ice and water dispensers and the insulating hump are not included in

the volume. No part of the dispenser unit shall be included as volume.

NOTE Z1 When the volume is determined, internal fittings are considered as not being in place, such as

— shelves;
— removable partitions;
— containers;
— convenience features (not classified as sub-compartments);
— interior light housings and lights."
In H.2.3, "Volume of evaporator space" replace item c) and add item:
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SIST EN 62552-3:2020
EN 62552-3:2020

"c) In the case of refrigerant filled shelving, the volume above the uppermost shelf and below the

lowermost shelf, if the distance between the shelf and the nearest horizontal plane of the cabinet inner

wall is less than or equal to 50 mm. All refrigerated shelves are considered as not present.

d) In the case where a fan is installed in an unfrozen compartment with a refrigerated wall evaporator or

a plate style evaporator, the volume of the fan and the fan scroll."
Add the following subclause H.Z1:

"H.Z1 Calculation of the volume of the section or sub-compartment in the compartment whose

target temperatures are different from each other

Calculation of the volume of the section or sub-compartment in the compartment whose target temperatures

are different from each other

Figures H.Z1 to H.Z5 show typical examples of volume calculation for a two-star section or compartment

inside the freezer compartment (three-star or four-star) and should be considered as generic examples.

The examples shown in Figures H.Z1 to H.Z5 may be combined to adapt the calculation to be representative

of the section or compartment in the refrigerating appliance under consideration.

Figures H.Z1, H.Z2 and H.Z4 can also be applied to a chill sub-compartment inside a fresh food

compartment.
Two-star
compartment or chill
compartment
Freezer or
If there is an
Fresh Food
interior wall
compartment
surrounding the
section (including
fixed partitions), the
calculation includes
all the space up to
Front view Side view

Figure H.Z1 — Part with partition in the freezer is a two-star compartment (or a chill compartment

next to a fresh food compartment)
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SIST EN 62552-3:2020
EN 62552-3:2020
Two-star compartment or chill
compartment
Freezer or fresh
The boundary for the
food
part of the section
compartment
without a
surrounding interior
wall, etc., is to the
midway point of the
compartment
boundary.
Front view Side view

Figure H.Z2 — Part without partition next to the freezer or fresh food compartment is a two-star

compartment or a chill compartment, respectively
The door shelf edge
is to be the
ドアポケット淵を
boundary of the
The throat areas 区画の境界線とす
section.
are to be
スロート部も
classified as two-
2スター区画
star sections.
とする
Side view
Figure H.Z3 — Freezer door shelves are a two-star section
The midway point
of the thickness of
the shelf is to be
the boundary of
the section.
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SIST EN 62552-3:2020
EN 62552-3:2020
The edge of the shelf or the edge of the case is to be boundary of
the section, whichever is nearer to the front.
Front view Side view
Figure H.Z4 — Drawer in the freezer is a two-star section (or a chi
...

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