Home / Standards / GB/T 14909-2021 GB/T 14909-2021 Active Technical guidelines for exergy analysis in energy systems 能量系统㶲分析技术导则 Standard Type GBT ICS 27.010 CCS F01 Status 现行 Issue Date 2021-04-30 Implementation 2021-11-01 Responsible Dept 国家标准委 Drafting Unit N/A