SIST EN 1118:1999/A1:2004

Heat exchangers - Refrigerant cooled liquid coolers - Test pocedure for establishing the performance

UAP of 4 months (TC Res 146d/1998) (CC/001115)

Wärmeaustauscher - Kältemittelgekühlte Flüssigkeitskühler - Prüfverfahren zur Leistungsfeststellung

Echangeurs thermiques - Refroidisseurs de liquides - Procédures d'essai pour la détermination de la performance

Prenosniki toplote – Hladilniki tekočin, hlajeni s hladivom – Postopki preskušanja za ugotavljanje tehničnih karakteristik - Dopolnilo A1

General Information

• Status: Published
• Publication Date: 31-Dec-2003
• ICS: 27.060.30 - Boilers and heat exchangers
• ICS: 27.200 - Refrigerating technology
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2004
• Due Date: 01-Jan-2004
• Completion Date: 01-Jan-2004
• Ref Project: EN 1118:1998/A1:2002 - Heat exchangers - Refrigerant cooled liquid coolers - Test pocedure for establishing the performance

Relations

• Amends: SIST EN 1118:1999 - Heat exchangers - Refrigerant cooled liquid coolers - Test procedures for establishing the performance
• Effective Date: 22-Dec-2008

Overview

SIST EN 1118:1999/A1:2004 is a European standard developed by the CEN Technical Committee TC 110 focused on heat exchangers, specifically refrigerant cooled liquid coolers. This standard defines the test procedure for establishing the performance of refrigerant cooled liquid coolers. It aims to provide a uniform method of testing to ensure reliable and comparable performance data for these heat exchangers under various operating conditions.

The amendment A1 (2002) updates the original 1998 version by incorporating provisions for newly available refrigerants such as R404A, R407C, and R410A. It also addresses important test parameters and measurement uncertainties, with special consideration given to non-azeotropic refrigerants and high glide refrigerants that have complex thermodynamic properties.

Key Topics

• Definitions and Terminology
  SIST EN 1118:1999/A1:2004 provides precise definitions related to refrigerant cooled liquid coolers, including terms like evaporating temperature, bubble point temperature, subcooling, and high glide refrigerants. This clarity ensures consistent interpretation during testing and performance assessment.

• Measurement Uncertainties
  The standard specifies measurement uncertainties with a focus on refrigerant mixtures, allowing for 1% by mass uncertainty in each refrigerant component. This precision assists in accurate capacity calculation and performance validation.

• Testing Methodology
  Detailed test methods cover general requirements and equipment needed to conduct performance tests on liquid coolers. Special procedural notes warn against inappropriate testing methods for high glide refrigerants used in certain circulation types such as liquid feed by gravity or pump circulation.

• Non-Azeotropic and High Glide Refrigerants
  EN 1118 addresses the complexities of testing non-azeotropic refrigerants whose components may separate and alter mixture concentrations during operation. The standard mandates that the refrigerant concentration remain constant during testing and limits the liquid receiver internal volume to less than 4% of the total system volume for high glide refrigerants.

Applications

This standard is crucial for manufacturers, testing laboratories, and engineers involved in the design and validation of refrigerant cooled liquid coolers used in refrigeration and air conditioning systems. By adhering to SIST EN 1118:1999/A1:2004, stakeholders can:

• Guarantee the reliability and comparability of performance data across different products and technologies,
• Optimize heat exchanger designs for enhanced thermal efficiency,
• Ensure compliance with European regulatory requirements and industry best practices,
• Accurately evaluate the performance impact of refrigerants, including next-generation blends like R404A, R407C, and R410A.

Related Standards

SIST EN 1118:1999/A1:2004 forms part of a suite of standards covering refrigerant systems, refrigeration technology, and heat exchanger testing. Relevant related standards include:

• EN 378 - Safety and environmental requirements for refrigerating systems and heat pumps,
• EN 14793 - Performance testing for refrigerant evaporators,
• ISO 5149 - Refrigerating systems and heat pumps - Safety and environmental requirements,
• National adaptations by CEN member countries such as NEN (Netherlands), ASI (Austria), and others.

Adopting this standard and its related documents supports harmonized practices in refrigeration technology, reinforcing innovation, safety, and energy efficiency across Europe and beyond.

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Keywords: SIST EN 1118:1999/A1:2004, refrigerant cooled liquid coolers, heat exchangers, performance test procedure, high glide refrigerants, non-azeotropic refrigerants, refrigerant mixtures, thermal efficiency, CEN standards, new refrigerants R404A R407C R410A, refrigeration technology testing

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2004
3UHQRVQLNLWRSORWH±+ODGLOQLNLWHNRþLQKODMHQLVKODGLYRP±3RVWRSNLSUHVNXãDQMD
]DXJRWDYOMDQMHWHKQLþQLKNDUDNWHULVWLN'RSROQLOR$
Heat exchangers - Refrigerant cooled liquid coolers - Test pocedure for establishing the
performance
Wärmeaustauscher - Kältemittelgekühlte Flüssigkeitskühler - Prüfverfahren zur
Leistungsfeststellung
Echangeurs thermiques - Refroidisseurs de liquides - Procédures d'essai pour la
détermination de la performance
Ta slovenski standard je istoveten z: EN 1118:1998/A1:2002
ICS:
27.060.30 Grelniki vode in prenosniki Boilers and heat exchangers
toplote
27.200 Hladilna tehnologija Refrigerating technology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 1118:1998/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2002
ICS 27.060.30; 27.200
English version
Heat exchangers - Refrigerant cooled liquid coolers - Test
pocedure for establishing the performance
Echangeurs thermiques - Refroidisseurs de liquides - Wärmeaustauscher - Kältemittelgekühlte Flüssigkeitskühler
Procédures d'essai pour la détermination de la - Prüfverfahren zur Leistungsfeststellung
performance
This amendment A1 modifies the European Standard EN 1118:1998; it was approved by CEN on 14 September 2002.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Management Centre or to any CEN member.
This amendment 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1118:1998/A1:2002 E
worldwide for CEN national Members.

Contents
page
Foreword.3
3 Definitions.3
7 Measurements.4
8 Testing methods and equipment.4
Foreword
This document (EN 1118:1998/A1:2002) has been prepared by Technical Committee CEN /TC 110 "Heat
exchangers", the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsemen
...