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.
FAQs
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.
What maintenance is required for the nozzles and components (filters, etc.)?
MeeFog pre-cooling systems need minimal maintenance. Inlet water filters should be replaced periodically, and any water treatment equipment needs routine service. The high-pressure pumps are water-lubricated, multi-stage centrifugal units designed to run for many years with little maintenance.
How is the pre-cooling system controlled (on/off, stages) based on ambient temperature or heat load?
MeeFog pre-cooling systems can operate automatically based on ambient temperature. For example, in a two-stage setup, the first stage turns on above 85°F (30°C), and the second stage turns on above 90°F (32°C). You can adjust set-points using climate data or process needs. Some systems also control based on the cooled fluid temperature leaving the heat exchanger, optimizing indirect evaporative cooling even further.