EN 13136:2013 Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (Incorporates Amendment A1: 2018)
This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems. NOTE The term "refrigerating system" used in this European Standard includes heat pumps. This European Standard describes the calculation of 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 components within the system at lower pressure. This European Standard 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. This European Standard describes the calculation of the pressure loss in the upstream and downstream line of pressure relief valves and other pressure relief devices and includes the necessary data. This European Standard refers to other relevant standards in Clause 5.
EN 13136:2013 Referenced Document
EN 12284:2003 Refrigerating systems and heat pumps - Valves - Requirements, testing and marking
EN 764-1:2004 Pressure equipment - Part 1: Terminology - Pressure, temperature, volume, nominal size Supersedes EN 764:1994
EN 764-2:2012 Pressure equipment - Part 2: Quantities, symbols and units
EN ISO 4126-1:2013 Safety devices for protection against excessive pressure - Part 1: Safety valves (Incorporates Amendment A1: 2016)
EN ISO 4126-2:2003 Safety devices for protection against excessive pressure ?Part 2: Bursting disc safety devices Incorporating corrigendam September 2004 and July 2006
2013EN 13136:2013 Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (Incorporates Amendment A1: 2018)
2001EN 13136:2001 Refrigerating Systems and Heat Pumps - Pressure Relief Devices and Their Associated Piping - Methods for Calculation Includes Amendment A1: 2005