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Fog systems are suitable for use even in very humid
climates. It is almost always possible to get at least
15°F (8°C) of evaporative cooling on a hot
day, even in a tropical climate. Mee Industries has
developed a climate database tool to help our clients
understand how much power boost they can expect from
fogging (cooling) gas turbines at their particular site. The
data is obtained from published climatic databases.
The analysis can be used to determine the Evaporative
Cooling Degree Hours (ECDH) for a variety of locations
worldwide. The annual ECDH number defines how many
degree-hours of cooling can be done at a particular
location in a typical year. Hot dry climates can have
as much as 50,000 annual ECDH, while cool and moist
climates might have as few as 10,000 ECDH.
Mee Industries can provide custom power boost reports
that give the total power boost possible in, for example,
2 hour windows, on a monthly basis. The reports show
MW hours as well as water consumption. This allows
gas turbine operators to make detailed return on investment
calculations. Most inlet air cooling (fog) systems pay for themselves
in less than 18 months.
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