Recommendations for efficient working of PRDS
• Minimum straight length at outlet should be 4 mtrs.Minimum water pressure requirement for Combined PRDS:
• Minimum distance of Temperature Sensor from the point of water injection should be 10 to 12 mtrs.
• Minimum distance of Pressure Sensor from PRDS Valve should be 1.5mtrs.
• It is recommended to install a strainer of 0.8 mm mesh before water control valve.
• Spray water should be very clean (equivalent to boiler feedwater).
• Instrument quality air is required.
• Top entry : Pw = [(P1+P2)/2 ] + 7 BARNotes
• Bottom entry through stem : Pw = P2 + 7
• Bottom entry through nozzle : Pw = [P1 / 2 ] + 7 BAR
1 Minimum controllable temperature is Saturation Temperature + 7°C.
2 The above are based on a specific set of parameters. These guidelines may change.