Gas Turbine

Types of ventilation Induced draft ventilation Turbine ,Acc module Positive ventilation- LGB, Exhaust Ventilation ashes Design features Induced Draft Ventilation Number of compartments Accessory compartment Turbine compartment Aft compartment Generator Enclosure 2 X 100 % Roof mounted outward-moving sports fans Auto change over Fan outlet gravity dampers, CO2 dampers and silencers provided Enclosure Air inlet hoods with filter panels Slow cool down fan provided for Turbine compartmentFan sizing Accessory compartment Heat unfold criteria Q = Heat Rejection = 104000 (BTU/Hr) = 436. 8 ( Kcal/min) Design compartment temp 600 C at ambient of 430 C Fan provided 2 x 10,000 CFM at 3. 5 inch WC static constrict The calculated temp raise with selected credit line flow 7. 80 C Static Pressure selected considering look out over across suction filter, inlet, exit, silencer and ducting Number of air changes criteria Volume Of the Acc Comp = 278 m3 Number of Air change /Hr = 60 (Meets NFPA and DEP 31. 29. 70. 31 requirements)Fan sizing Turbine compartment Heat load criteria Q = Heat Rejection = 1273469 (BTU/Hr) = 5348 ( Kcal/min) Design compartment temp 1200 C at ambient of 430 C Fan provided 2 x 26,000 CFM at 3. 5 inch WC static pressure The calculated temp raise with selected air flow 300 C Static Pressure selected considering drop across suction filter, inlet, exit, silencer and ducting Number of air changes criteria Volume Of the Acc Comp = 215 m3 Number of Air change/Hr = 185 (Meets NFPA and DEP 31. 29. 70. 31 requirements)Vent Fan Drawing Typical Accessory Compartment Fan Curve Fan BHP 5. 53 kw force back selected- 8 kw Motor Data 4pole 415V,3Ph TEFC Motor ambient Temp. 650 C Insulation coterie H ( Temp raise limited to class B) Flame test copy NEC Class 1 Div 2 Gr C&D Turbine Compartment Fan Curve Fan BHP 15. 45 kw Motor selected- 19 kw Motor Data 4pole 415V,3Ph TEFC Motor ambient Temp. 650 C Insulation class H ( Temp raise limited to class B) Flame proof NEC Class 1 Div 2 Gr C&D Exhaust Frame Blower (Fr6) Two motor driven centrifugal Blowers Inlet interpenetrate & silencer Air to turbine shell, exhaust frame via strut passages (Annular space) Flow2470 CFM with two fans in operation Emergency1860 CFM with one fan in operation Motor rating 50HP GT Auxiliaries GT Auxiliaries EXHAUST FRAME BLOWERS EXHAUST FRAME BLOWER GT Auxiliaries MIST ELIMINATOR Removes anele mist entrained in the LO vapor Flow rate SCFM Demister pads(8Nos)-SS316 wire hire Coalescing filter element(99. 97% for droplets and particles 0. micron and larger) Outlet oil content not more than 5ppm by weight Centrifugal blowers (2 Nos) and motors(11kw each) OUT LET come home CASING INLET BLOWER & MOTOR GT Auxiliaries GT Auxiliaries MIST ELIMINATOR High speed rotating machinery High temperature and shearing action in bearings generates a large volume of very fine oil mist (droplets) plus a considerable amount o f vapor Oil mist and oil vapor is vented from the lube oil tank, it causes a visible plume Stringent environmental laws and regulations at all government levels Coalescers combine small aerosols through the filter media to form large droplets.