kSIST FprEN 17432:2021

Packaged refrigerating units for walk-in cold rooms - Classification, performance and energy consumption testing

This document defines classification criteria, test conditions and test procedures for performance testing of packaged refrigerating units for stationary cold room applications. This includes ductless units for cold storage applications at medium temperatures (MT) and low temperatures (LT) in either compact or split designs, fitted with electrically driven compressors, which work according to the vapour compression cycle.

Kälteaggregate für begehbare Kühlräume - Klassifikation, Prüfung der Leistung und des Energieverbrauchs

Das vorliegende Dokument legt Kriterien zur Klassifizierung sowie Prüfbedingungen und Prüfverfahren zur Leistungsprüfung von Kälteaggregaten für begehbare Kühlräume für die stationäre Anwendung in Kühlräumen fest. Hierzu gehören Kälteaggregate ohne Leitungen für eine Lagerung bei mittleren Temperaturen (MT) und niedrigen Temperaturen (NT) in kompakter oder mehrteiliger Bauweise, die über elektrische Verdichter verfügen, welche sich nach dem Dampfkompressionszyklus richten.

Groupes frigorifiques prêts à monter pour chambres froides - Classification, performance et essai de consommation d'énergie

Le présent document définit les critères de classification, les conditions d’essai et les modes opératoires d’essai pour les essais de performances des groupes frigorifiques prêts à monter destinés aux applications dans les chambres froides fixes. Cela inclut les groupes sans conduits pour les applications de stockage à froid à moyennes températures (MT) et basses températures (BT) dans des constructions compactes ou segmentées, équipés de compresseurs à entraînement électrique, qui fonctionnent selon le principe du cycle de compression de vapeur.

Samostojne hladilne enote za male hladilnice - Razvrstitev, tehnične lastnosti in preskus porabe energije

General Information

• Status: Not Published
• Public Enquiry End Date: 25-Dec-2019
• ICS: 27.200 - Refrigerating technology
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Oct-2021
• Due Date: 11-Dec-2021
• 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
• Mandate: M/495 - Standardisation mandate to CEN, CENELEC and ETSI under Directive 2009/125/EC relating to harmonised standards in the field of Ecodesign
• Ref Project: EN 17432:2021 - Packaged refrigerating units for walk-in cold rooms - Classification, performance and energy consumption testing

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN 17432:2019
01-december-2019

Samostojne hladilne enote za male hladilnice - Razvrstitev, tehnične lastnosti in

preskus porabe energije

Packaged refrigerating units for walk-in cold rooms - Classification, performance and

energy consumption testing

Kälteaggregate für begehbare Kühlräume - Klassifikation, Prüfung der Leistung und des

Energieverbrauchs

Groupes frigorifiques prêts à monter pour chambres froides - Classification, performance

et essai de consommation d'énergie
Ta slovenski standard je istoveten z: prEN 17432
ICS:
27.200 Hladilna tehnologija Refrigerating technology
oSIST prEN 17432:2019 en,fr,de

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

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oSIST prEN 17432:2019
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oSIST prEN 17432:2019
DRAFT
EUROPEAN STANDARD
prEN 17432
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2019
ICS 27.200
English Version
Packaged refrigerating units for walk-in cold rooms -
Classification, performance and energy consumption
testing

Groupes frigorifiques prêts à monter pour chambres Kälteaggregate für begehbare Kühlräume -

froides - Classification, performance et essai de Klassifikation, Prüfung der Leistung und des

consommation d'énergie Energieverbrauchs

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 44.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
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. prEN 17432:2019 E

worldwide for CEN national Members.
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oSIST prEN 17432:2019
prEN 17432:2019 (E)
Contents Page

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

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Symbols ............................................................................................................................................................... 8

5 Classification ..................................................................................................................................................... 9

6 Test conditions ................................................................................................................................................. 9

6.1 General ................................................................................................................................................................ 9

6.2 Testing conditions .......................................................................................................................................... 9

6.3 Measurement uncertainty ........................................................................................................................ 10

7 Test setup ........................................................................................................................................................ 11

7.1 General ............................................................................................................................................................. 11

7.2 Calorimeter room ......................................................................................................................................... 11

7.3 Arrangement of test and measurement equipment ........................................................................ 12

7.4 Installation and preparation of a test unit .......................................................................................... 12

7.5 Measurement criteria ................................................................................................................................. 13

7.6 Calibration test of the calorimeter room ............................................................................................. 13

8 Performance Testing................................................................................................................................... 14

8.1 General ............................................................................................................................................................. 14

8.2 Steady-state conditions .............................................................................................................................. 14

8.3 Cooling Capacity tests ................................................................................................................................. 15

8.3.1 Steady-state conditions .............................................................................................................................. 15

8.3.2 Data acquisition ............................................................................................................................................ 15

8.3.3 Heat recovery capacity ............................................................................................................................... 15

8.4 Calculation of the cooling capacity ........................................................................................................ 16

8.5 Measuring of total electric power consumption ............................................................................... 17

9 Test results ..................................................................................................................................................... 17

10 Test report ...................................................................................................................................................... 18

10.1 General information .................................................................................................................................... 18

10.2 Information on the type plate .................................................................................................................. 19

Annex A (informative) Examples for the test setup ........................................................................................ 20

A.1 General ............................................................................................................................................................. 20

A.2 Examples ......................................................................................................................................................... 20

Bibliography ................................................................................................................................................................. 23

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European foreword

This document (prEN 17432:2019) has been prepared by Technical Committee CEN/TC 44

“Commercial and Professional Refrigerating Appliances and Systems, Performance and Energy

Consumption”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association.
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Introduction

This document was developed in order to provide a suitable method of performance testing of packaged

refrigerating unit for stationary cold room applications.

This is the first edition of this document. It includes testing only in so-called “dry conditions”. That

means, the evaporator does not show any ice formation during the test. Although it is well-known, that

such conditions do not represent the typical situation in the practical use of the packaged refrigerating

units, this edition of the document focusses on the description of a test procedure providing reliable test

results, which can be used to compare the performance of different models/types of packaged

refrigerating unit.

In order to keep the test procedure in this document practically oriented, tests under so-called ”wet

conditions” as well as taking defrost periods into account will be a future Work Item of the responsible

working group. The aim is to integrate such tests in a later revision of this document.

This document reflects the current market situation which shows that only refrigerating units without

integrated pump for the heat transfer medium on the exterior heat exchanger are offered.

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oSIST prEN 17432:2019
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1 Scope

This document defines classification criteria, test conditions and test procedures for performance

testing of packaged refrigerating units for stationary cold room applications. This includes ductless

units for cold storage applications at medium temperatures (MT) and low temperatures (LT) in either

compact or split designs, fitted with electrically driven compressors, which work according to the

vapour compression cycle.
2 Normative references
Not applicable.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
packaged refrigerating unit

functional unit incorporating a complete factory-made refrigerating system, as defined in EN 378-1,

mounted in a suitable frame and/or enclosure, that is fabricated and transported complete, or in two or

more sections and in which no refrigerant-containing parts are connected on site other than by

isolation valves, such as companion valves, and by interconnecting piping as defined by the

manufacturer

Note 1 to entry: A packaged refrigerating unit incorporates at least one refrigerant circuit, and can incorporate

one or more heat transfer circuits.
3.2
compact unit

packaged refrigerating unit, that has been assembled, filled ready for use, and is installed without the

need for connecting any refrigerant-containing parts
3.3
split unit

packaged refrigerating unit, comprising one unit providing cooling to the cold room and one unit used

for condensing the refrigerant
3.4
factory made

manufactured at a dedicated production location under control of a recognized quality system

Note 1 to entry: Assembling is manufacturing.

[SOURCE: EN 378-1:2016, 3.8.5, modified — The present Note 1 to entry was added.]

3.5
interior heat exchanger

heat exchanger in which liquid refrigerant is vaporized by absorbing heat from the interior heat

transfer medium, for the applications regarded here, the interior heat exchanger is usually called

’evaporator’
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3.6
exterior heat exchanger

heat exchanger in which the refrigerant is cooled down due to heat dissipation by the exterior heat

transfer medium, for the applications regarded here, the exterior heat exchanger is usually called

‘condenser’
3.7
heat transfer medium
medium (water, air, etc.) which transfers heat without undergoing phase changes
3.8
dry bulb temperature

temperature of air measured by a thermometer exposed to the air but shielded from radiation and

moisture
3.9
calorimeter room

insulated test chamber which houses a heating device and the interior heat exchanger

3.10
test chamber

room in which the ambient air can be conditioned and kept in a steady state condition and in which the

exterior heat exchanger as well as the calorimeter are located
Note 1 to entry: See 7.2 for further explanation.
3.11
total cooling capacity

heat per unit of time transferred to the unit via heat transfer medium minus introduced heat of the fans

installed at the interior heat exchanger
3.12
latent cooling capacity

heat flow extracted from surrounding air by condensation of water vapour as well as icing, including

sub-cooling, of the evaporator surface
3.13
sensible cooling capacity
heat flow extracted from surrounding air by lowering the dry bulb temperature
3.14
total power consumption
average electrical power consumption of a system over time defined by:

a) power consumption of installed compressor and any power consumption during de-frosting

periods;
b) power consumption of any installed control or safety devices;

c) power consumption of any integrated device, like fans or pumps, for ensuring heat transfer

medium transport within the unit.
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3.15
energy efficiency ratio
ratio of total cooling capacity to total power consumption of the unit
3.16
energy efficiency ratio including heat recovery

ratio of total cooling capacity to total power consumption of the unit including recovered heat from the

exterior heat exchanger of water-to-air units
3.17
operating limits

limitations in terms of maximum and minimum operating conditions (range of pressure, temperature,

voltage, humidity, etc.)

Note 1 to entry: The unit shall work as intended within the operating limits specified by the manufacturer.

3.18
nominal conditions

conditions that define a standard which reveals if a packaged refrigerating unit is working within those

defined limits
3.19
standard air conditions

condition of dry air at 20 °C with an air pressure of 101.325 kPa and with a density of 1.204 kg/m

3.20
support cold

independently working refrigerating unit to compensate heat losses through the calorimeter room

envelope
3.21
low temperature

application, at which the packaged refrigerating unit is capable of delivering its nominal cooling

capacity at the interior heat exchanger inlet temperature of −20 °C
3.22
medium temperature

application, at which the packaged refrigerating unit is capable of delivering its nominal cooling

capacity at the interior heat exchanger inlet temperature of 0 °C
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4 Symbols
Table 1 — Quantities
UnitSy
Symbol Quantity Unit
mbol
Q Total cooling capacity Watt W
Q0L Latent cooling capacity Watt W
Q Sensible cooling capacity Watt W
P Total power consumption Watt W
EER Energy efficiency ratio — —
EER Energy efficiency ratio including waste heat — —
A Length of the air inlet of the interior heat exchanger millimetres mm
Width/Height of the air inlet of the interior heat
B millimetres mm
exchanger
q Heat loss during calibration of the calorimeter room Watt per Kelvin W/K
Heat loss
P Total electric power consumption of the heating Watt W
Heater
T Internal temperature of the calorimeter room Kelvin K
int
T Ambient temperature of the test chamber Kelvin K
out
∆T Temperature spread (calibration) Kelvin K
Temperature of the heat transfer medium (water) at
T Degree Celsius °C
out,w
heat exchanger outlet
Temperature of the heat transfer medium (water) at
T Degree Celsius °C
int, w
heat exchanger inlet
m mass flow kilogram per second kg/s
V Volume Cubic metre m
kilogram per cubic
ρ Density kg/m
metre
Q heating capacity of the heat exchanger kilowatt kW
Heat
Cubic meters per
nominal volume flow m /s
second
maximum measured external static pressure
∆p Pascal P
difference between water inlet and outlet
η pump efficiency Percent %
Q total heating capacity of the heating device Watt W
Heat,i
Q cooling capacity of the support cold Watt W
support cold
Temperature spread between interior and exterior
∆T Kelvin K
heat exchanger (measurement)
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Table 2 — Constants
Symbol Description Value
c Specific heat capacity of water 4,19 kJ/(kg ∙ K)
5 Classification

Refrigerating units are labelled by listing their heat transfer mediums. The heat transfer medium of the

exterior heat exchanger (condenser) is listed in the first column, the heat transfer medium of the

interior heat exchanger (evaporator) is listed in the second column (see Table 3).

Table 3 — Labelling of refrigerating units
Heat transfer medium Term
Exterior heat exchanger Interior heat exchanger
Air Air Air cooled refrigerating unit
Water Air Water cooled refrigerating unit
Liquid Air Liquid cooled refrigerating unit
6 Test conditions
6.1 General

The test procedures defined in this document provide methods for determining cooling capacities and

electrical power consumption of packaged refrigerating units as well as for determining heat recovery

capacities of water-cooled packaged refrigerating units. The tests can be performed under dry

conditions inside a calorimeter room, which is placed in a test chamber.
6.2 Testing conditions

The following test procedures are to be conducted under the nominal conditions given in Tables 4,

5 and 6), unless stated otherwise.
Table 4 — Air-to-Air Refrigerating unit – Nominal Dry Conditions
Exterior Heat
Interior Heat Exchanger
Exchanger
Dry Bulb
Dry Bulb
Rel. Humidity at
Temperature at
inlet
Temperature at Inlet
Inlet
LT 32 °C −20 °C a
Nominal
Conditions for:
MT 32 °C 0 °C a
As low, as to prevent icing on the heat exchanger surface.

The manufacturer may choose the following additional testing conditions for air-to-air refrigerating

units:

— for cold climate: 15 °C for dry bulb temperature at inlet of exterior heat exchanger;

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— for hot climate: 43 °C for dry bulb temperature at inlet of exterior heat exchanger.

Table 5 — Water-to-Air Refrigerating unit – Nominal Dry Conditions
a
Interior Heat Exchanger
Exterior Heat Exchanger
Dry Bulb
Inlet Outlet Rel. Humidity at
Temperature at
temperature temperature inlet
Inlet
LT 30 °C 35 °C −20°C b
Nominal
Conditions for:
MT 30 °C 35 °C 0°C b
The heat transfer medium on the exterior heat exchanger shall be water.
As low, as to prevent icing on the heat exchanger surface.
Table 6 — Liquid-to-Air Refrigerating unit – Nominal Dry Conditions
a Interior Heat Exchanger
Exterior Heat Exchanger
Inlet Outlet Dry Bulb Rel. Humidity at
temperature temperature Temperature at inlet
Inlet
Nominal LT 10 °C 17 °C −20 °
...