A
Hi,
We have a GE frame 5 gas turbine Model MS 5001 R/NT installed at our complex. We are facing issue of high enclosure temperature specially when ambient goes above 50 deg C. Some other observations are as follows
- Both ventilation fans are in continuous operation.
- There is no drop in compartment pressure with both ventilation fans so presumably there is no ventilation air leakage (Delta P data compared to Previous years record with 02 fans in operation).
- All the dampers are in open position and there is no apparent restriction in flow path.
- Turbine high exhaust temperature issue is also faced in conjunction with the enclosure temperature issue and turbine shifts to temperature control mode so load is restricted
- Inlet filters delta P is within range
- Compartment Temperature is around 15 deg greater than recorded during previous years
We suspect that this might be caused by cooling/sealing air piping leakage. This turbine had undergone major overhaul last year and is in service for 6 months after that.
I have following questions to ask,
1. In short term can i devise a method to cool the temperature of ventilation air fed to the compartment by installing a water sparger of sorts?
Will the moisture carried over with the ventilation air have any effect on instrumentation or cause any corrosion?
2. Besides process air leakage can there be combustible gas leakage that could cause this temperature increase?
Regards,
MAz
We have a GE frame 5 gas turbine Model MS 5001 R/NT installed at our complex. We are facing issue of high enclosure temperature specially when ambient goes above 50 deg C. Some other observations are as follows
- Both ventilation fans are in continuous operation.
- There is no drop in compartment pressure with both ventilation fans so presumably there is no ventilation air leakage (Delta P data compared to Previous years record with 02 fans in operation).
- All the dampers are in open position and there is no apparent restriction in flow path.
- Turbine high exhaust temperature issue is also faced in conjunction with the enclosure temperature issue and turbine shifts to temperature control mode so load is restricted
- Inlet filters delta P is within range
- Compartment Temperature is around 15 deg greater than recorded during previous years
We suspect that this might be caused by cooling/sealing air piping leakage. This turbine had undergone major overhaul last year and is in service for 6 months after that.
I have following questions to ask,
1. In short term can i devise a method to cool the temperature of ventilation air fed to the compartment by installing a water sparger of sorts?
Will the moisture carried over with the ventilation air have any effect on instrumentation or cause any corrosion?
2. Besides process air leakage can there be combustible gas leakage that could cause this temperature increase?
Regards,
MAz