EN ISO 24664:2024

Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (ISO 24664:2024) EN ISO 24664:2024

Publication date:   Mar 25, 2021

General information

60.60 Standard published   Dec 18, 2024

CEN

CEN/TC 182 Refrigerating systems, safety and environmental requirements

European Norm

27.080   Heat pumps | 27.200   Refrigerating technology

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Scope

This document describes the calculation of:
—     mass flow for sizing pressure relief devices for parts of refrigerating systems;
—     discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to part of the refrigerating system at lower pressure;
—     the pressure loss in the inlet and outlet lines of pressure relief valves and other pressure relief devices and includes the necessary data.
This document specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
NOTE            The term "refrigerating system" used in this document includes heat pumps.

Related legislation

Legislation related to this standard

2014/68/EU

Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment

Life cycle

PREVIOUSLY

WITHDRAWN
EN 13136:2013+A1:2018

NOW

PUBLISHED
EN ISO 24664:2024
60.60 Standard published
Dec 18, 2024