SIST EN 17116-4:2020

Specifications for industrial laundry machines - Definitions and testing of capacity and consumption characteristics - Part 4: Washer-extractors

This document defines the characteristics of washer-extractors and gives the usual test methods for these characteristics with regard to machine capacity, power consumption and productivity. It is applicable for use as a reference in the drafting of purchasing orders for washer-extractors whose net usable cage volume is 400 dm3 (litres) respectively 40 kg and above. In addition, it is recommended for determination of energy consumption and productivity according to Directive 2009/125 EC. Furthermore, the document describes standard methods for measuring principal performance characteristics of washer-extractors. It does not cover safety requirements (see EN ISO 10472-2).

Anforderungen an industrielle Wäschereimaschinen - Definition und Prüfung von Kapazitäts- und Verbrauchsmerkmalen - Teil 4: Waschschleudermaschinen

Dieses Dokument definiert die Gebrauchseigenschaften von Waschschleudermaschinen und gibt die üblichen Verfahren zur Prüfung dieser Eigenschaften mit Bezug auf die Maschinenbeladung, den Energie-verbrauch und die Produktionsmenge an. Es dient zur Orientierung bei der Erstellung von Kaufaufträgen für Waschschleudermaschinen, deren nutzbares Nettovolumen der Trommel 400 dm3 (Liter) bzw. 40 kg und mehr beträgt. Außerdem wird es zur Bestimmung des Energieverbrauchs und der Produktionsmenge entsprechend der Richtlinie 2009/125/EG empfohlen. Darüber hinaus beschreibt das Dokument Standard¬verfahren für die Messung grundlegender Gebrauchseigenschaften von Waschschleudermaschinen. Es behandelt keine Sicherheitsanforderungen (siehe EN ISO 10472 2).

Spécifications pour les machines de blanchisserie industrielles - Définitions et contrôle des caractéristiques de capacité et de consommation - Partie 4 : Laveuses-essoreuses

Le présent document définit les caractéristiques des laveuses-essoreuses et spécifie les méthodes d'essai usuelles pour la détermination de ces caractéristiques, relatives à la capacité, à la consommation d'énergie et à la production horaire de ces machines. Elle sert de référence pour la rédaction des offres d'achat et des commandes pour les laveuses-essoreuses dont le volume utile de tambour est supérieur ou égale à 400 dm3 (litres) ou 40 kg. De plus, elle est recommandée pour la détermination de la consommation d'énergie et de la production horaire conformément à la Directive 2009/125 EC. Par ailleurs, le document décrit des méthodes normalisées pour mesurer les principales caractéristiques de performance des laveuses-essoreuses. Elle ne traite pas des exigences de sécurité (voir l'EN ISO 10472 2).

Specifikacije za industrijske pralnice strojev - Definicije in preskušanje zmogljivosti ter značilnosti porabe - 4. del: Ožemalniki

Ta osnutek evropskega standarda določa značilnosti ožemalnikov in podaja običajne preskusne metode za te značilnosti v zvezi z zmogljivostjo strojev, porabo energije in produktivnostjo. Uporablja se kot referenca pri pripravi naročilnic za ožemalnike, katerih neto uporabna prostornina kletke je 400 dm3 (litrov) oziroma 40 kg ali več. Poleg tega se priporoča za določanje porabe energije in produktivnosti v skladu z Direktivo 2009/125/ES. Standard opisuje standardne metode za merjenje glavnih značilnosti delovanja ožemalnikov. Ne vključuje varnostnih zahtev (glej EN ISO 10472-2).

General Information

• Status: Published
• Public Enquiry End Date: 13-Jul-2017
• Publication Date: 02-Dec-2019
• ICS: 97.060 - Laundry appliances
• Technical Committee: VSN - Safety of machinery
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-Jul-2019
• Due Date: 16-Sep-2019
• Completion Date: 03-Dec-2019
• Directive: 2009/125/EC - Directive 2005/32/EC of the European Parliament and of the Council of 6 July 2005 establishing a framework for the setting of ecodesign requirements for energy-using products and amending Council Directive 92/42/EEC and Directives 96/57/EC and 2000/55/EC of the European Parliament and of the Council
• Directive: 2010/30/EU - DIRECTIVE 2010/30/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 19 May 2010 on the indication by labelling and standard product information of the consumption of energy and other resources by energy-related products (recast)
• Mandate: M/539 - [C(2015)8756] Standardization request on Ecodesign and energy labelling of non-household washing machines, dryers and dishwashers
• Ref Project: EN 17116-4:2019 - Specifications for industrial laundry machines - Definitions and testing of capacity and consumption characteristics - Part 4: Washer-extractors

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2020
Specifikacije za industrijske pralnice strojev - Definicije in preskušanje
zmogljivosti ter značilnosti porabe - 4. del: Ožemalniki
Specifications for industrial laundry machines - Definitions and testing of capacity and
consumption characteristics - Part 4: Washer-extractors
Anforderungen an industrielle Wäschereimaschinen - Definition und Prüfung von
Kapazitäts- und Verbrauchsmerkmalen - Teil 4: Waschschleudermaschinen
Spécifications pour les machines de blanchisserie industrielles - Définitions et contrôle
des caractéristiques de capacité et de consommation - Partie 4 : Laveuses-essoreuses
Ta slovenski standard je istoveten z: EN 17116-4:2019
ICS:
97.060 Aparati za nego perila Laundry appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17116-4
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 97.060
English Version
Specifications for industrial laundry machines - Definitions
and testing of capacity and consumption characteristics -
Part 4: Washer-extractors
Spécifications pour les machines de blanchisserie Festlegungen für Wäschereimaschinen - Definition und
industrielles - Définitions et contrôle des Prüfung der Beladung und Verbrauchsmerkmale - Teil
caractéristiques de capacité et de consommation - 4: Waschschleudermaschinen
Partie 4 : Laveuses-essoreuses
This European Standard was approved by CEN on 17 September 2018.

CEN 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 CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17116-4:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols . 8
3.1 Terms and definitions . 8
3.2 Symbols and abbreviations . 11
4 Requirements . 15
4.1 General . 15
4.2 Nominal load . 16
5 General test conditions . 16
5.1 General . 16
5.2 Reference machine . 16
5.3 Ambient conditions . 16
5.3.1 Ambient temperature and humidity . 16
5.3.2 Water supply . 16
5.3.3 Energy supply . 17
5.3.4 Electricity supply . 17
5.3.5 Compressed air supply . 17
5.3.6 Steam supply . 17
5.3.7 Condition of the machine . 18
5.4 Machine/test load . 18
5.4.1 General . 18
5.4.2 Weight of load . 18
5.4.3 Number of test runs . 18
5.4.4 Nature of nominal load. 19
5.4.5 Stain and soil monitors . 19
5.4.6 Wash process control sheets . 20
5.4.7 Rinse performance fabrics . 21
5.4.8 Addition of the test fabrics. 21
5.5 Detergent . 22
5.5.1 General . 22
5.5.2 Specification of detergent system . 22
5.6 Washing programme . 23
5.6.1 Washing programme in test machine . 23
5.6.2 Washing programme for barrier washers . 23
5.7 Washing conditions in reference machine. 23
6 Preparation for testing . 24
6.1 General . 24
6.2 Preparation for the washer-extractor to be tested . 24
6.2.1 Installation of the washer-extractor . 24
6.2.2 Preparation of the washer-extractor for a test series . 24
6.2.3 Preparation of the washer-extractor for a test run . 24
6.3 Preparation of the reference machine . 24
6.4 Preparation of the nominal load . 25
6.4.1 General . 25
6.4.2 Bone dry-conditioning . 25
7 Determination of wash performance . 25
7.1 General . 25
7.2 Determination of moisture content mcsl of the soiled load . 26
7.3 Determination of the corrected weight of the nominal load W . 26
c
7.4 Test procedure . 27
7.5 Primary wash performance . 28
7.5.1 General . 28
7.5.2 Expression of results . 28
7.6 Secondary wash performance . 30
7.6.1 General . 30
7.6.2 Expression of results . 31
7.7 Rinse performance . 31
7.7.1 General . 31
7.7.2 Expression of results . 32
8 Determination of energy consumption. 32
8.1 General . 32
8.2 Test procedure . 33
8.3 Determination of electrical energy . 33
8.4 Determination of steam and gas consumption . 33
8.5 Expression of results . 34
9 Determination of water consumption . 36
9.1 General . 36
9.2 Test procedure . 36
9.3 Expression of results . 36
10 Determination of detergent consumption . 37
10.1 General . 37
10.2 Test procedure . 37
10.3 Expression of results . 38
11 Determination of hourly productivity . 39
11.1 General . 39
11.2 Test procedure . 39
11.3 Expression of results . 39
12 Determination of residual moisture content after extraction . 40
12.1 General . 40
12.2 Test procedure . 40
12.3 Expression of results . 40
13 Machine information . 41
13.1 Identification . 41
13.2 Specifications . 41
Annex A (normative) Specification of washer extractor to determine test load size when
rated capacity is not declared . 42
A.1 General . 42
A.2 Determination of the drum volume . 42
A.3 Test load size . 42
Annex B (normative) Specification of reference washing machine . 43
B.1 General . 43
B.2 Installation of the reference machine. 44
B.3 Regular maintenance . 44
B.3.1 General . 44
B.3.2 Before test series . 45
B.3.3 During a test series . 45
Annex C (normative) Specification of test pieces with standardized soiling . 46
C.1 Soils . 46
C.2 Supporting fabric for soil . 46
C.3 Multi soil monitor (test set) . 46
C.4 Marking of stain test monitors and accompanying data . 47
C.5 Advice for users . 47
Annex D (normative) Specification of the wash process control sheet for secondary wash
performance. 48
D.1 General . 48
D.2 Specification . 48
Annex E (normative) Specification of the rinse performance fabrics . 49
E.1 General . 49
E.2 Specification . 49
Annex F (normative) Type and dosage of detergents for the reference machine . 50
F.1 General . 50
F.2 Detergent composition . 50
F.3 Bleach agent . 50
Annex G (normative) Washing conditions in reference machine . 51
G.1 General . 51
G.2 Specification of the cotton nominal load items . 51
G.3 Reference programme . 54
G.4 Specification of washing programme in reference machine . 54
Annex H (normative) Test washer extractor process parameters . 63
H.1 General . 63
H.2 Technical data of the washer-extractor . 63
H.3 Washing programme description . 63
Annex I (normative) Type and dosage of detergents and wash additives for the washer
extractor . 65
I.1 General . 65
I.2 Registration of type and dosage. 65
I.3 Calculation of real total detergent consumption . 66
Annex J (normative) Steam measurement system . 67
J.1 General . 67
J.2 Specification of supplied steam . 67
J.3 Steam measurement equipment . 67
J.4 Quality Standard for the supply of steam . 67
J.5 Instruments . 67
J.6 Measurements . 68
J.7 Calculation of steam consumption . 68
Annex K (normative) Gas consumption measurement . 69
K.1 General . 69
K.2 Installation, testing procedure and calculation of supplied gas energy . 69
K.3 Specification of supplied gas . 69
K.4 Specification of gas consumption meter . 69
K.5 Calculation of the supplied gas heating energy . 69
Annex L (normative) Required water quality characteristics . 73
Annex M (informative) Determination of nominal load . 74
M.1 General . 74
M.2 Example for determination of nominal load . 74
Annex N (informative) Data loggers for measuring the liquor temperature . 76
N.1 General . 76
N.2 Specification of the loggers . 76
N.3 Preparation of the loggers before measurement . 76
N.4 Number of loggers . 76
N.5 Measuring the temperature . 77
N.6 Presenting the result . 77
Annex O (informative) Measurement tolerances . 78
Annex P (normative) Test tolerances . 79
Annex Q (normative) Declaration of energy consumption and productivity of washer
extractors . 80
Annex R (informative) Testing procedure to prepare the load to the correct nominal load . 81
Bibliography . 82

European foreword
This document (EN 17116-4:2019) has been prepared by Technical Committee CEN/TC 214 “Textile
machinery and accessories”, the secretariat of which is held by SNV.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by January 2020, and conflicting national standards shall
be withdrawn at the latest by January 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is based on ISO 9398-4 extended by the application of the state of the art methodology
to measure performance and has been prepared by CEN/TC 214/WG 05.
The standard testing procedure for washer-extractors is based on ISO 9398-4. It includes among others
the references EN ISO 10472-1 and EN ISO 10472-2.
European Standard requirements.
ISO 9398-4:2003 is extended by state of the art methodology to measure performance. Significant
technical differences from ISO 9398-4:2003 are:
a) more detailed description of testing procedure;
b) changed test conditions under practical in situ laundry conditions;
c) introduction of a new type of test load;
d) implementation of energy consumption of various heat sources;
e) implementation of air compressor energy consumption;
f) implementation of detergent consumption;
g) implementation of washing performance, as stain removal, secondary wash performance and rinse
performance;
h) comparison of wash performance with reference washing machine;
i) preparation for testing measuring hygienic requirements.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
1 Scope
This document defines the characteristics of washer-extractors and gives the usual test methods for
these characteristics with regard to machine capacity, power consumption and productivity. It is
applicable for use as a reference in the drafting of purchasing orders for washer-extractors whose net
usable cage volume is 400 dm (litres) respectively 40 kg and above. In addition, it is recommended for
determination of energy consumption and productivity according to Directive 2009/125 EC.
Furthermore, the document describes standard methods for measuring principal performance
characteristics of washer-extractors. It does not cover safety requirements (see EN ISO 10472-2).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 676, Automatic forced draught burners for gaseous fuels
EN 1049-2, Textiles — Woven fabrics — Construction — Methods of analysis — Part 2: Determination of
number of threads per unit length (ISO 7211-2:1984 modified)
EN 1773, Textiles — Fabrics — Determination of width and length
EN 12127, Textiles — Fabrics — Determination of mass per unit area using small samples
EN ISO 139, Textiles — Standard atmospheres for conditioning and testing (ISO 139)
EN ISO 2060, Textiles — Yarn from packages — Determination of linear density (mass per unit length) by
the skein method (ISO 2060)
EN ISO 2061, Textiles — Determination of twist in yarns — Direct counting method (ISO 2061)
EN ISO 3759, Textiles — Preparation, marking and measuring of fabric specimens and garments in tests
for determination of dimensional change (ISO 3759)
EN ISO 15797:2018, Textiles — Industrial washing and finishing procedures for testing of workwear (ISO
15797:2017)
ISO 2267, Surface active agents — Evaluation of certain effects of laundering — Methods of preparation
and use of unsoiled cotton control cloth
ISO 4312, Surface active agents — Evaluation of certain effects of laundering — Methods of analysis and
test for unsoiled cotton control cloth
ISO 9398-1, Specifications for industrial laundry machines — Definitions and testing of capacity and
consumption characteristics — Part 1: Flatwork ironing machines
ISO 9398-3, Specifications for industrial laundry machines — Definitions and testing of capacity and
consumption characteristics — Part 3: Washing tunnels
DIN 4754 (all parts), Heat transfer installations working with organic heat transfer fluids
DIN 38409-23, German standard methods for the examination of water, waste water and sludge —
Parameters characterizing effects and substances (group H) — Part 23: Determination of bismut active
substances (H 23)
DIN 61101-1, Weaves; general terms, basic weaves
RAL-GZ 992/1, RAL-Gütezeichen 992 für sachgemäße Wäschepflege „Objekt- und Haushaltswäsche“
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 9398-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
washer-extractor
machine for cleaning and rinsing of textiles by means of water and having an extraction process for de-
watering the textiles at the end of the programme or by intermediate
3.1.2
test washer-extractor
washer-extractor that is subject to part or all of the requirements in this document in order to
determine its performance
3.1.3
reference washing machine
specially constructed washing machine of known washing performance level with high repeatability
and reproducibility of results which is used to compare the primary washing performance (stain/soil
removal of supplied test fabrics)-on tested washer-extractor as defined in this standard
Note 1 to entry: Refer to 5.2.
3.1.4
top loaded machine
washer-extractor where the load is placed into the cage from the top (vertical position)
3.1.5
front loaded machine
washer-extractor where the load is placed into the cage in direction of the axis
3.1.6
side loaded machine
washer-extractor where the load is placed into the cage perpendicular to the direction of the cage axis
3.1.7
barrier washer
washer-extractor which can be built in a wall and where the load is placed from one side (unclean
section) of the machine and taken out from another side (clean section), mostly combined with spatial
separation of clean and unclean section for disinfection processes, etc
3.1.8
Pullman machine
washer-extractor where the horizontal inner drum is divided in two compartments
3.1.9
Y-pocket machine
washer-extractor where the inner cage is divided in three compartments
3.1.10
test run
single performance assessment in a test series
3.1.11
test series
number of test runs on a washer-extractor which, collectively, are used to assess the performance of
that machine
3.1.12
operation
performance of a function that occurs during the washer-extractor programme such as pre-wash,
washing, rinsing, draining or spinning
3.1.13
programme
series of operations which are pre-defined within the washer-extractor that are declared by the
manufacturer as suitable for washing certain textile types
3.1.14
wash cycle
complete washing process, as defined by the selected programme, which consists of a series of
operations (including extraction, without loading/unloading), and which starts with the start signal
(closed door) and ends with standstill of cage after the final spin (closed door)
3.1.15
spin extraction
water-extracting function by which water is removed from the textiles by centrifugal action and which
is included as a function (built in operation) of the washer-extractor
3.1.16
spin speed
number of revolutions of the inner cage per min during spin extraction
Note 1 to entry: A method for determination of spin speed is not defined in this standard.
3.1.17
nominal load (of a washer-extractor)
weight of normally soiled load in kg of cotton (100 %) textiles (including (9 ± 2) % residual moisture
content, related to bone dry load that may be washed and extracted in the machine
3.1.18
test load
mass of the nominal load plus stain and soil monitors, wash process control sheets and rinse
performance fabrics (test fabrics)
3.1.19
cage volume
net usable volume, expressed in cubic decimetres (litres), equivalent to inside volume minus all
inwardly projecting volumes
3.1.20
load ratio
ratio of the nominal capacity of the washer-extractor, expressed in kilograms, to the cage volume,
expressed in cubic decimetres (litres); the usual value of this ratio being 1:10 for flatwork cotton
3.1.21
wash cycle time
time of one wash cycle
3.1.22
end of wash cycle
wash cycle ends with standstill of cage after the final spin and possibility to open the door
3.1.23
main wash duration
time from the commencement of the initial water intake for the main wash until the commencement of
the initial water intake for the first rinse
Note 1 to entry: Thermo-stop is included in main wash duration.
Note 2 to entry: Variations in the water supply pressure and temperature as well as in the heating system may
affect the main wash duration. This definition is only applicable to test washer-extractors.
3.1.24
thermo-stop
start of wash duration after achievement of the pre-determined temperature and maintaining that
temperature during the whole wash step
3.1.25
nominal hourly production output
weight of hourly production based on nominal load at defined testing conditions
3.1.26
bone dry-conditioning
bringing the test load into conditions without moisture content (bone dry) by multiple drying until a
steady-state weight is achieved
3.1.27
residual moisture content (extraction efficiency)
measure for the remaining amount of moisture that is contained in the nominal load in relation to the
conditioned state (bone dry state)
3.1.28
rated voltage
constant voltage with an acceptable range of ± 10 % (EN 60038) assigned to the washer-extractor by
the manufacturer
3.1.29
rated steam pressure
min./max. steam pressure assigned to the washer-extractor by the manufacturer
3.1.30
rated water pressure
min./max. water pressure assigned to the washer-extractor by the manufacturer
3.1.31
rated compressed air pressure
min./max. compressed air pressure assigned to the washer-extractor by the manufacturer
3.2 Symbols and abbreviations
The symbols are listed in Table 1.
Table 1 — List of symbols
Symbol Unit Definition
C
— sum of average reflectance values of all stain fabrics before washing
Yu
C
— sum of average reflectance values of all stain fabrics after washing
Yw
E
kWh measured energy for air compression
A
E
kWh measured energy for air compression per test run
A,i
E
kWh measured electric energy consumption
E
E
kWh measured electric energy consumption per test run
E,i
E
kWh measured energy for heating
H
E
kWh gas heating energy
H,gas
E
kWh measured energy for heating per test run
H,i
E
kWh calculated energy embedded/lacking in hot/cold feed water
HF
E calculated energy embedded/lacking in hot/cold feed water per test
HF,i
kWh
run
calculated energy embedded/lacking in hot/cold feed water per kg dry
E
kWh/kg
HF,dw
load
sum of energy consumption for heating, electric energy for motors and
E
kWh
tot,nt
air compression
sum of energy consumption for heating, electric energy for motors and
E
kWh
tot,nt,i
air compression per test run
Symbol Unit Definition
sum of energy consumption for heating, electric energy for motors and
E
kWh/kg
tot,nt,dw
air compression per treated weight of test load
sum of energy consumption for heating, electric energy for motors and
E
kWh/kg
tot,nt,dw,i
air compression per treated weight of test load and per test run
mean value of sum of energy consumption for heating, electric energy
E
kWh/kg
tot,,nt dw
for motors and air compression per treated weight of test load
E
kWh total energy consumption
tot
E
kWh total energy consumption per test run
tot,i
E
kWh/kg total specific energy consumption
tot,spec
f — calculation factor for calculation of gas heating energy
FAZ — colour shift number
H 3
heating value of the gas under laundry conditions
gas kWh/m
heating value of the gas related to standard state conditions (0 °C,
H 3
gas,ss kWh/m
1 013 mbar)
I
A amperage of air compressor
A
m — number of stain/soil types
moisture content of soiled nominal load under ambient conditions in
mc
%
sl
the laundry
moisture content of selected soiled nominal load items under ambient
mc
%
sl,i
conditions in the laundry
m
kg/h weight of washed nominal load during 1 h
load/hour
m
kg/h weight of washed nominal load during 1 h in one test run
load/hour,i
m
kg/h arithmetic mean of weight of washed nominal load during 1 h
load/hour
M
kg/kg weight of the specific feed water per kg dry load
HF,dw
M
l water consumption during the test run
li
M
l/kg specific water consumption per kg dry load (9 % residual moisture)
li,dw
M specific water consumption per kg dry load (9 % residual moisture)
li,dw,i
l/kg
per test run
mean value of specific water consumption per kg load of single test
M
li,dw
l/kg
runs
n — number of readings of tristimulus value per stain
N — number of test runs
p
mbar atmospheric pressure
baro
p
mbar gas pressure at metering system
gas
Symbol Unit Definition
rmc
% residual moisture content of nominal load after extraction
ae
rmc
% residual moisture content of nominal load after extraction per test run
ae,i
mean value of residual moisture content of nominal load after
rmc
ae
%
extraction
s — damage factor, chemical damage
standard deviation of residual moisture content of nominal load after
S
%
ae
extraction
standard deviation of reflectance values for each type of stain within a
S
—
i
test run
standard deviation of sum of energy consumption for heating, electric
S
kWh/kg
tot,nt,dw
energy for motors and air compression per treated weight of test load
standard deviation of water consumption per treated weight of test
S
l/kg
li,dw
load
mg/kg
standard deviation of total detergent consumption per treated mass of
S
D,tot,dw
test load
ml/kg
S
kg/h standard deviation of weight of washed nominal load during 1 h
load/hour
t
min running time air compressor
A
t
s time to reach determined detergent volume
DP
t
s total dosing time of detergent
D,tot
t
min duration of the test run
tr
θ
°C gas temperature
gas
cleaning index, ratio between difference of Y-values increase (washed-
R
—
c
unwashed) in tested machine and reference machine
U
V voltage of air compressor
A
V
ml volume of detergent
DP
V
ml/s flow rate of dosing pumps
DP/t
V 3
consumption of gas
gas m
W
kg weight of moist nominal load after extraction
ae
W
kg weight of the bone dry nominal load
bd
weight of the selected soiled bone dry (conditioned) nominal load
W
kg
bdi
items
weight of the nominal load, related to ambient conditions 20 °C, 65 %
W
kg
c
r.h.
Symbol Unit Definition
weight of the nominal load, related to ambient conditions 20 °C, 65 %
W
ci
r.h. in one test run
total consumption of completely
...