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Vietnam Electricity Gains 39.6 MW Boost

Vietnam Electricity installed MeeFog systems on two Siemens V94.2 gas turbines. The systems provide evaporative cooling and wet compression and produce a 19.7 MW power boost, resulting in a 39.6 MW total power boost for the plant. Wet compression consists of spraying water into the gas turbine compressor. The water evaporates inside the compressor. This inter-cooling effect reduces the work of compression, which causes an increase in power output.

Project Conditions:

Location: PhuMy 2.1 Extension, Vietnam
Hot day conditions: 38° with 27° C wet bulb
Elevation: Sea level
Max power boost per GT: 19.8 MW
Mee’s scope of work: Supply of fog pump skids, nozzle manifolds, and supervision of installation and commissioning

Fog System Design:

Evaporative cooling and 0.6% (for the airmass flow) as wet compression
Cooling stages: 16
Operating pressure: 2,000 psi
Fog droplet size: 12 microns
Nozzle flow rate: 0.17 lpm per nozzle
MeeFog™ nozzle count: 2,048
Max power requirement: 160 HP

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