CEN/TC 110/WG 1 - Heat exchangers used in the field of refrigeration and air conditioning

1.1   General
This document is one of a series dedicated to air-cooled heat exchangers.
-   forced convection air cooled refrigerant condensers as specified in EN 327;
-   forced convection unit air coolers for refrigeration as specified in EN 328;
-   air cooled liquid coolers "dry coolers" as specified in EN 1048.
This document provides information for assessing and presenting the acoustic emission characteristics of heat exchangers under stationary operating conditions.
This document is applicable to selfstanding forced convection air cooled refrigerant condensers and air cooled liquid coolers "dry coolers" and air coolers.
1.2   Size of source
The method specified in EN ISO 3744, EN ISO 3745, EN ISO 3746, EN ISO 9614 1, EN ISO 9614 2 and EN ISO 9614-3 is applicable to noise sources of any size. Limitations for the size of the source are given in 1.3 of EN ISO 3741:2010, EN ISO 3743 1:2010 and EN ISO 3743 2:2009.
1.3   Object
This document offers ways to determine the sound power level of units. Some of them are specifically adapted to provide results with low uncertainties, by using laboratory class or engineering class acoustic methods under highly controlled working conditions. Those results are suitable for certification, labeling and marking purposes.
This document is concerned with objective methods for determining sound power levels LW, expressed in decibels (dB) with reference to a sound power of one picowatt (1 pW), of airborne acoustical noise within the specified frequency range of interest and for prescribed operating conditions of the appliance to be measured:
-   A-weighted sound power level, LWA;
-   spectral sound power levels;
-   emission sound pressure level at workplace, LpA.

This European Standard applies to non ducted forced convection air cooled refrigerant condensers/gas coolers with dry air side surface within which the refrigerant changes phases or is cooled. Its purpose is to establish uniform methods of performance assessment. It does not deal with evaluation of conformity.
This standardEuropean Standard does not apply to air cooled condensers/gas coolers, designed primarily for installation within the machinery compartment of packaged products or in factory-assembled condensing/gas cooling units.
This European Standard does not apply to condensers with an integral subcooling part.
This European Standard specifies methods to test and ascertain the following:
-   product identification;
-   standard capacity;
-   nominal air flow rate;
-   nominal fan power.
This standard does not cover technical safety aspects.

This European Standard applies to remote forced convection air cooled liquid coolers, within which no change in the liquid phase occurs.
This European Standard does not apply to liquid coolers, designed primarily for installation within the machinery compartment of packaged products.
Its purpose is to establish uniform methods to test and ascertain the following:
-   Product identification;
-   Capacity;
-   Air flow rate;
-   Liquid side pressure drop;
-   Energy requirements.
This European Standard does not cover technical safety aspects.

This European Standard is applicable to non-ducted unit air coolers for refrigeration operating:
a)   with direct dry expansion of a refrigerant;
b)   with liquid overfeed by pump circulation of a refrigerant;
c)   with a liquid.
This standard specifies uniform methods of performance assessment to test and ascertain the following:
-                product identification;
-   standard capacity;
-   standard liquid pressure drop;
-   standard refrigerant pressure drop (for operation with liquid overfeed by pump circulation only);
-   nominal air flow rate;
-   nominal fan power.
It does not cover evaluation of conformity.
It is not applicable to air coolers for duct mounting or with natural air convection.
This standard does not cover technical safety aspects.

UAP of 4 months (TC Res 146d/1998) (CC/001115)
2020-01-20: Originator of XML version: NEN (on behalf of NEN, ASI, DS, SFS, SIS, SN)

UAP of 4 months (TC Res 146e/1998) (CC/001115)
2020-01-20: Originator of XML version: NEN (on behalf of NEN, ASI, DS, SFS, SIS, SN)

UAP of 4 months (TC Res 146c/1998) (CC/001115)
2020-01-20: Originator of XML version: NEN (on behalf of NEN, ASI, DS, SFS, SIS, SN)

This European Standard gives guidance on the preparation of manufacturer's instructions for the installation, operation and maintenance of heat exchangers. Meeting the recommendations in this standard does not remove the manufacturers/installers responsibility to provide all necessary specific information to ensure the safe and efficient working of their equipment.

This European Standard applies to series produced liquid coolers which operate with a (primary) refrigerant and its purpose is to establish uniform methods to test and ascertain the following: - Product identification - Capacity-Liquid flow rate-Liquid side pressure drop. This Standard does not cover technical safety aspects.

This European Standard applies to forced circulation air-cooling or air-heating coils operating:a) with an evaporating or condensing refrigerant;b) with a cooling or heating fluid;c) without fans. Operation with steam is not part of the standard.

This European Standard applies to series produced liquid cooled refrigerant condensers which operate with a (primary) refrigerant. Its purpose is to establish uniform methods to test and ascertain the following:- Product identification,Capacity,Liquid flow rate,Liquid side pressure drop. This Standard does not cover technical safety aspects.

This standard specifies methods for uniform assessment and the recording of: - the A-weighted sound power level; - the sound power spectrum; - a calculation method for an overall average sound pressure level at a given distance. Among these data, the sound power level is the only unambiguous characteristic. This standard is applicable to: - forced convection air cooled refrigerant condensers as specified in ENV 327; - air cooled liquid coolers "dry coolers" as specified in ENV 1048.

This European Standard applies to room fan-coil units using hot or chilled water or water mixtures.  It applies to units designed for an air flow of not more than 0,7 m3/s and an external static pressure due to duct resistance of 65 Pa max. Air heating may be achieved by means of electrical resistance heaters.

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

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

This European Standard applies to non ducted forced convection air cooled refrigerant condensers with dry air side surface within which the refrigerant changes phases. Its purpose is to establish uniform methods of performance assessment. It does not deal with evaluation of conformity. This European Standard does not apply to air cooled condensers, designed primarily for installation within the machinery compartment of packaged products or in factory-assembled condensing units.

This European Standard is applicable to non-ducted unit air coolers for refrigeration operating:   a) with direct dry expansion of a refrigerant  b) with liquid overfeed by pump circulation of a refrigerant  c) with a liquid.

This European Standard applies to remote forced convection air cooled liquid coolers, within which no change in the liquid phase occurs. This European Standard does not apply to liquid coolers, designed primarily for installation within the machinery compartment of packaged products.  Its purpose is to establish uniform methods to test and ascertain the following:-Product identification; Capacity;Air flow rate;Liquid side pressure drop;Energy requirements.  This European Standard does not cover technical safety aspects.