Home / Standards / GB/T 27698.4-2023 GB/T 27698.4-2023 Active Test methods for the performance of heat exchangers and heat exchange elements—Part 4: Measurement of noise from air-cooled heat exchangers 热交换器及传热元件性能测试方法 第4部分：空冷器噪声测定 Standard Type GBT ICS 27.060.30 CCS J75 Status 现行 Issue Date 2023-05-23 Implementation 2023-05-23 Responsible Dept 国家标准委 Drafting Unit N/A