Q: 由於空氣再循環的能源節省

當地氣候條件： 213天的統一日溫度（UDD）：平均溫度差 = 9.4°C 耗熱量（排出空氣）：流量（m ³ /h) x 溫度差（°C）x 空氣的體積熱容（Kcal.m ³ ）12,500 x 9.4 x 0.3/860 = 40 kWh 節能效果：8小時/天 制 耗電量（kWh）x 採暖工作天數 x 每天運行小時數 40 X (213 - 50 ) x 8 = 52,160 kWh 按估算的電價0.2€/kWh計算的節能效果： 52,160 x 0.2 = 10,432歐元/年

Q: Controlling system pressure

Variable Speed Drive (VSD) A VSD allows to adjust fan speed and flow rate of the dust collection system. Operating on a constant flow rate not only reduces the power consumption of the dust collector fan, it also extends the lifetime of the filter cartridges. Without this function, the flow rate at the start-up will be higher because of the low pressure drop in the media thus shortening filter life. Estimated fan energy consumption: With VSD: Media pressure drop of 100 Pa for a flow rate of 12,500 m³/h Static pressure of 3,000 Pa i.e. fan speed of 40 Hz with a power consumption of 15 kW Without VSD: Flow rate of 15,625 m³/h Static pressure of 4,600 Pa Rotation speed of 50 Hz and a power consumption of 29 kW Conclusion: Using a VSD-controlled fan can reduce the energy consumption by up to 14 kW per hour. Savings with an estimated price of 0.2 €/kWh: (Difference of 14 kw/h x 213 working days / 8 hours = 1,704 working hours) = 4,771,20 EUR

Question 1

由於空氣再循環的能源節省

Accepted Answer

當地氣候條件：

213天的統一日溫度（UDD）：平均溫度差 = 9.4°C
耗熱量（排出空氣）：流量（m^³/h) x 溫度差（°C）x 空氣的體積熱容（Kcal.m^³）12,500 x 9.4 x 0.3/860 = 40 kWh

節能效果：8小時/天制

耗電量（kWh）x 採暖工作天數 x 每天運行小時數
40 X (213 - 50 ) x 8 = 52,160 kWh
按估算的電價0.2€/kWh計算的節能效果：
52,160 x 0.2 = 10,432歐元/年

Question 2

Controlling system pressure

Accepted Answer

Variable Speed Drive (VSD)

A VSD allows to adjust fan speed and flow rate of the dust collection system. Operating on a constant flow rate not only reduces the power consumption of the dust collector fan, it also extends the lifetime of the filter cartridges. Without this function, the flow rate at the start-up will be higher because of the low pressure drop in the media thus shortening filter life.

Estimated fan energy consumption:

With VSD:

Media pressure drop of 100 Pa for a flow rate of 12,500 m³/h
Static pressure of 3,000 Pa
i.e. fan speed of 40 Hz with a power consumption of 15 kW

Without VSD:

Flow rate of 15,625 m³/h
Static pressure of 4,600 Pa
Rotation speed of 50 Hz and a power consumption of 29 kW

Conclusion:

Using a VSD-controlled fan can reduce the energy consumption by up to 14 kW per hour.
Savings with an estimated price of 0.2 €/kWh: (Difference of 14 kw/h x 213 working days / 8 hours = 1,704 working hours) = 4,771,20 EUR

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由於空氣再循環的能源節省

Controlling system pressure

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