GB 50189-2015 第4.2.10条
| **** | The energy efficiency ratio (ER) of the chilled and hot water distribution systems of air-conditioning systems shall not exceed the values specified in Table 4.2.10. Two-pipe hot water piping: ER ≤ 0.00577 (at a supply-return water temperature difference of 15℃); four-pipe hot water piping: ER ≤ 0.00433 (at a supply-return water temperature difference of 10℃); chilled water piping: ER ≤ 0.0241 (at a supply-return water temperature difference of 5℃). |