Products > Stationary Systems > Retro-Fit Wet Sections  
Retro-Fit Wet SectionRetro-fit wet sections are an easy and cost effective way to add cooling to an existing ventilation system or supplemental cooling to an existing air handling system is by installing an evaporative wet section on the fresh air intake. Installing a wet section on an existing ventilation system is a very easy retro-fit in most cases. After determining the airflow of the system in CFM ( cubic feet per minute ) the wet section can be properly sized so that air speed across the media is in the 500 FPM ( feet per minute ) range. If the size of the wet section turns out to be larger than the existing intake duct we can supply transitional ducting to connect the two. After the physical installation is complete the only things left to do are supply water to the float valve connection and power to the pump. The pump can be controlled in a number of ways including a simple on off switch or thermostatically to come on at a given temperature. The addition of a MegEvap wet section transforms a system that delivers hot dirty air to the space into one that supplies cool clean air. Because the only power required to operate the wet section is what it takes to run the pump (usually fractional horsepower ) cost of operation is extremely low.

Retro-Fit Wet Section (Click for larger image.)Supplemental cooling on an existing air handler is another application for a retro-fit wet section. This can be a very cost effective installation on a system that uses a large amount of fresh air because of process requirements such as purging fumes or contaminants or in agricultural applications such as mushroom farms and citrus degreening. When it is undesirable to run the evaporative wet section at the same time as the existing cooling coil face and bypass dampers can be installed to bypass air around the evaporative section when the cooling coil is active. When the compressor shuts down (direct expansion system) or the chilled water valve closes incoming air is again directed through the wet section reducing the temperature of the outside air entering the space and lengthening the off cycles of the existing system and in turn saving energy. Savings increase when conditions are such that the evaporative section can carry the entire cooling load which can be the case for many hours of the day. Another benefit of adding a wet section to an existing system is added air filtration. The air passing through the evaporative media is exposed to thousands of square feet of wet surface which traps contaminants much like an insect on fly paper. Because of the self cleaning design of the media we use the contaminants are washed into the sump where they are periodically flushed. The wet media will effectively filter dust, smoke, pollen, spores and other particulates, it will even reduce VOCs ( volatile organic compounds ) such as CO, CO2 and NOX gases resulting in improved air quality. Another benefit to the filtering effect is increased life of downstream filters further reducing operating costs. Because of the low first cost, savings in operating costs, ease of maintenance and years of benefit, adding a MegEvap wet section to your existing ventilation or air handling system is a sound investment.

Standard Features
  • All stainless steel construction.
  • 12" rigid media.
  • Integral sump, make-up valve, recirculation pump, distribution system, flow control, and bleed-off valve to help reduce scaling.
Options
  • 18" or 24" rigid media.

Call for pricing and delivery options at (435) 743-5561 or email inquiry to info@megevap.com.