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FAQs

What is the purpose of inlet air cooling for a gas turbine engine?

Inlet air cooling makes the air denser. Since the compressor of the gas turbine moves a fixed volume of air, the mass flow increases then the air is denser. More mass flow means more power output and improved efficiency. Cooler air also takes less work to compress, so the compressor consumes less of the power produced by the expansion turbine making more power available at the output shaft of the turbine.

How does inlet air cooling increase power output?

Inlet air cooling makes the air denser. Since the compressor of the gas turbine moves a fixed volume of air, the mass flow increases then the air is denser. More mass flow means more power output and improved efficiency. 

What sort of guarantee or warranty does MeeFog provide for its pre‑cooling systems?

We guarantee the amount of cooling a system will produce on a hot day. MeeFog systems have a 12-month warranty. Longer warranty terms are available on request.

Can the pre-cooling system be used under all weather conditions, including high heat or very humid days?

MeeFog pre-cooling systems can be used whenever the temperature is above freezing. It is usually possible to cool by at least 10°F (5.5°C) even on humid afternoons in a tropical climate.

Are there any case studies or examples of performance improvements in similar indirect evaporative cooling applications?

Yes, we’ve documented several indirect evaporative cooling projects showing measurable performance gains on steam condensers, AC condensers, and other systems. 

What are typical lead times and installation requirements (power, plumbing, structural supports)?

To install a pre-cooling system for heat exchangers, typical lead times are about 12 weeks for smaller projects and up to 24 weeks for larger ones. MeeFog pump skids arrive fully assembled, with fog nozzles installed and factory-tested.

Nozzle lines usually ship in 20-foot sections. Installation involves bolting the pump skid to a foundation, then connecting the feedlines and nozzle lines. MeeFog supplies all required drawings and a technical advisor to support the installation process.

What are the materials and construction details (e.g., stainless steel, nozzle design)?

Fog nozzles, fog nozzle lines, feedlines, and pumps are all stainless steel, which provides long life and requires minimal maintenance.

Are there any issues with water fallout or overspray? How are these mitigated?

MeeFog systems reduce water fallout by using many fog nozzles with low flow rates that prevent over-wetting of coils. Any overspray that occurs can boost indirect evaporative cooling, as water evaporates from the hot coil surfaces, improving overall heat rejection and system efficiency.

What is the expected lifespan of a MeeFog pre-cooler for heat exchangers?

A MeeFog pre-cooler for heat exchangers can operate for more than 30 years with proper maintenance. The fog nozzles themselves do not wear out and can be used for the life of the system, assuming water treatment is maintained.