GB 50019-2015 第9.4.2条
| **** | Hydraulic balancing calculations shall be performed for the air-conditioning water system, and the pressure loss difference between circuits shall not exceed **15%**. Where this is not met, **balancing valves** shall be installed or a reverse-return system shall be adopted. For hotel guest room areas, a **horizontal reverse-return** or **riser reverse-return** arrangement should be used. |