GB 50365-2019 第6.2.7条
| **** | **Water system temperature difference control**: The supply-return water temperature difference of the chilled water system should not be less than the design temperature difference (typically 5℃), and the supply-return water temperature difference of the hot water system should not be less than the design temperature difference (typically 10℃), to avoid high-flow, low-temperature-difference operation. |