VO-II – Variable Orifice Desuperheater

Copes-Vulcans 可變流孔板減溫器(VO)是業界公認的多功能減溫器，它能夠輕鬆滿足電力和製程工業中最嚴苛的過熱降溫需求。

VO 提供極其精細的控制和卓越的降溫，僅受冷卻劑控制閥本身的可調範圍限制。

*Very High Turndown

*Low Cooling Water Pressure Required

*Close Temperature Control Tolerance

*Preheats The Cooling Water

*No Thermal Liners Required

*Minimum Straight Pipe Lengths Required

Performance

*Turndown:  100+:1

*Approach temperature:  60C

*Temperature Tolerance:  30C

*Steam Velocity:  N/A

*Spray water Pressure:  >0.5 Bar

*Steam Pressure Drop:  0.2 Bar

Features

• The VO II offers extremely fine control and exceptional turndown that is limited only by the rangeability of the coolant control valve itself. Typically the unit can achieve a rangeability of 100:1 when matched with a Copes-Vulcan control valve fitted with Cascade trim design.
• Due to excellent mixing of vapor and coolant, control is possible throughout the entire operating range to within 5 °F (2.5 °C) of the set point, which can be as close as 10 °F (5 °C) above saturation.
• The coolant pressure, which is required at the inlet to the VO II need only be 5 PSI (0.35 bar) above the pressure of the vapor being desuperheated.
• Since virtually all the desuperheating occurs within the body itself, usually no pipe liners or long downstream straight pipe runs are necessary.