| Excessive air in-leakage and
ineffective non-condensable gas removal can lead to condenser inefficiencies
as great as 23%. One generator recently estimated the cost of air in-leakage
on a 500 megawatt turbine as in excess of £1000 per mbar, per week.
In addition to the increased generation costs, the man/hours taken to locate
the source of the leak are a major concern.
Chell Instruments second generation A I M provides real time measurement
of air ingress enabling trends to be picked up at an early stage, and
relevant action taken. Once air in-leakage is detected comparison of
the individual measured parameters under differing plant load conditions,
with historical data and with other plant measurements is useful in indicating
the most likely source.
Continuous output of all the measured parameters via 4-20 mA signals
and the digital interface allows data logging, further analysis of the
information, or integration into the plant management system. |
