Draft Document - Refrigeration systems and heat pumps with ammonia - (additional) requirements
文件草案-带氨的制冷系统和热泵-（附加）要求

1999-12-01

Draft Document - Refrigerating systems and heat pumps - Competence of personnel (ISO/DIS 22712:2018); German and English version prEN ISO 22712:2018
文件草案——制冷系统和热泵——人员能力（ISO/DIS 22712-2018）；德文和英文版本prEN ISO 22712:2018

2018-09-01

Draft Document - Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction, testing, marking and documentation; German and English version EN 378-2:2016/prA1:2019
文件草案——制冷系统和热泵——安全和环境要求——第2部分:设计、施工、试验、标记和文件；德语和英语版本EN 378-2:2016/prA1:2019

2019-10-01

Draft Document - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (ISO/DIS 24664:2021); German and English version prEN ISO 24664:2021
文件草案——制冷系统和热泵——减压装置及其相关管道——计算方法（ISO/DIS 24664-2021）；德文和英文版本prEN ISO 24664:2021

2021-04-01

Draft Document - Refrigerating systems and heat pumps - Qualification of tightness of components and joints - Amendment 1 (ISO 14903:2017/DAM 1:2022); German and English version EN ISO 14903:2017/prA1:2022
文件草案-制冷系统和热泵-部件和接头密封性鉴定-修改件1（ISO 14903-2017/DAM 1-2022）；德语和英语版本EN ISO 14903:2017/prA1:2022

2022-06-01