1371蒸汽和冷凝水系统手册
第13冷凝水的排除失流图—适用于二次侧流体流量和入口温度恒定，出口温度发生变化的状况
章节13.7
5.2 bar 224 kg/h失流负荷
(0.4 bar) (4 m静压
压差(bar)
图13.7.9
(5.2 bar)
1371蒸汽和冷凝水系统手册
第13冷凝水的排除失流图—适用于二次侧流体流量和入口温度恒定，出口温度发生变化的状况章节13.7
疏水阀上端有200mm的安装高度
压差 (mm w.g.)
图13.7.10
1371蒸汽和冷凝水系统手册
第13冷凝水的排除失流图—适用于二次侧流体流量和入口温度恒定，出口温度发生变化的状况
章节13.7
1371蒸汽和冷凝水系统手册
第13冷凝水的排除失流图—适用于二次侧流体流量和入口温度恒定，出口温度发生变化的状况章节13.7
Questions
1. How does a reduction in set point affect stall? a| It does not affect it at all b| It reduces the percentage stall
c| The system operates under permanent stall conditions d| It increases the percentage stall
2. How does a reduction in the set point affect the steam pressure? a| It reduces the steam pressure b| It does not affect it at all c| It increases the steam pressure
d| The steam pressure equals the backpressure
3. In Example 13.7.1, with the set point at 60°C what would the steam temperature be if the system were operating at 30% heat load?
a| 100°C b| 110°C c| 120°C d| 80°C
4. In Example 13.7.1, with the set point at 60°C if the minimum possible heat load were 70%, would the system stall? a| Yes, at all loads
b| Only if the set point were increased c| No
d| Yes, but only on loads higher than 70%
5. If, in Example 13.7.1, the set point were reduced to 40°C, what would be the approximate steam temperature if the inlet temperature remained at 20°C? a| 66°C b| 45°C c| 55°C d| 76°C
6. If, in Example 13.7.1, the set point were reduced to 40°C, what would be the approximate steam temperature if the inlet temperature rose to 30°C? a| 28°C b| 38°C c| 48°C d| 58°C
1: d, 2: a, 3: d, 4: c, 5: d, 6: d
Answers