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Client: Norbord
Application: OSB Plant
Location: Guntown, MS

Equipment Summary:
Five (5) Labyrinth Natural Ventilators 11’ × 75”

Project Profile:
The Norbord OSB plant in Guntown, MS had a humidity problem. The hot humid air generated by the wood making process was damaging the building’s insulation and corroding the steel. The current ventilation system was not effectively evacuating the hot air causing it to build up at the ceiling, wearing out the infrastructure.

The plant required a solution that would reduce heat, minimize the moisture, and stand up to the harsh conditions. Moffitt was contacted by Norbord to design a solution to their ventilation problem.

Moffitt determined that a Natural Ventilation system was the best way to encourage air movement. Placing Labyrinth natural ventilators on the roof would allow the dirty air to flow up and out of the building, and prevent the humid air from gathering at the ceiling. Not only does this fix the corrosion problem but it also lowers the internal temperature and controls humidity throughout the plant. As a result, the entire building is a cooler and more comfortable work space.

Contact Moffitt Today to See How a Natural Ventilation System can Help Control Humidity in your Facility.

Application: Paper Packaging Mill
Location: northeast GA

Equipment Summary:
Eight (8) 5’ × 40’ Monovent Natural Ventilators

Project Profile:
This northeast Georgia Paper Mill needed a new ventilation system to better suit the high heats that result from the paper making process. The current system was not properly venting the heat that results from the carton board production; heat was being trapped inside the building leading to temperatures of 141.1° F, and a high relative humidity of 20.3%.

Moffitt determined that adding natural ventilators would allow the hot air to more easily evacuate the building. The large size and construction of the building made it a prime candidate for the Moffitt Monovent. Retrofitting eight of these large ventilators onto the building roof, immediately lead to more comfortable temperatures inside. Dropping by over 20°, the temperature at the roof is now 120° F.

Moffitt Mechanical provided full turn-key service for this facility; designing the system, providing the equipment, and installing the ventilators. Moffitt expertly handled this project from start to finish.

Contact Moffitt today to learn how Natural Ventilation can benefit your Paper Mill or production facility.

Client: Greene County Power
Application: Steam Electric Plant
Location: Greene County, AL

Equipment Summary:
Ten (10) Labyrinth Natural Ventilators - 12’ × 15’
Thirty (30) Fixed Louvers Model 3035 Extruded Aluminum Stationary Wall Louvers - 4’ × 4’

Project Profile:
Greene County Power is an Electric Generating Plant that utilized the Moffitt Labyrinth and stationary blade wall louvers to ventilate it’s facility. Moffitt designed, supplied and installed the ventilation system for this Alabama turn-key project in the winter of 2010.

Moffitt had a small window to complete this project. The installation team put in louvers and safely mounted the roof top vents on this 3/12-pitched roof and ahead of a tight construction schedule; even in inclement weather conditions.

“Moffitt delivered the ventilation equipment and materials ahead of schedule. The installation crew completed the project ahead of schedule, with excellent quality and safety consciousness. The crew endured the cold, wind, rain, snow and an evacuation drill and still beat the schedule safely. The combination of roof ventilators and wall louvers has noticeably increased the air flow in the buildings as well as making the buildings look better.”

David H. Tait, Jr., P.E.
APC Greene County Plant

Name: Evonik Stockhausen
Application: Chemical Products
Location: Garyville, LA

Equipment Summary:
One (1) Labyrinth Natural Ventilator - 14’ × 75’
Three (3) Labyrinth Natural Ventilators - 14’ x 25’

Project Profile:
Experiencing high-temperatures and stagnant air Moffitt Corporation was called to help Evonik Stockhausen find a solution to their ventilation problem. Located in Garyville, LA, this chemical factory produces a range of products.

The problem was due to lack of airflow within the building. Exhaust fans placed on the wall and roof were not effectively venting the air, leaving warm air trapped at the roof and cool air only moving next to the building walls.

A double Labyrinth roof vent was installed at ridge of the roof and additional Labyrinth units were placed in other key locations on the rooftop. These Natural Ventilators allowed the heat to escape the building; preventing air from getting trapped and increasing air-flow throughout the facility.

Moffitt provided a complete turn-key solution for this facility designing the system, fabricating the Labyrinth units, and assembling them in place. The system was quickly installed. It was finished in time to weather the 20 inches of rain and 80 mph winds of Hurricane Isaac. Over the the three days in August 2012, the Labyrinth units experienced no rain infiltration or damage despite torrential rain and high winds.

Contact Moffitt to Find the Weatherproof Ventilation Solution for your Facility.

Client: Edwardsport
Application: IGCC Power Plant
Location: Edwardsport, IN

Project Summary:
General HVAC - Steam Turbine & Gasification Structure
Explosion Proof HVAC - Coal Grinding and Slurry Buildings
Source Capture with Stainless Steel Ductwork
Electrical Power & Control Wiring for HVAC
Start-Up Service

Project Profile:
Moffitt designed, supplied and installed a unique, automated ventilation system for this large Integrated Gasification Combined Cycle (IGCC) power plant in Edwardsport, Indiana. IGCC is a cutting-edge technology that turns coal into a synthesis gas (syngas) to improve the efficiency of the energy creation process. This process results in very high temperatures and requires a sophisticated ventilation system to keep it the optimal temperature.

Moffitt Mechanical supplied & installed a motor control center to operate the ventilation system in the steam turbine generator building. This system consisted of interlocking several different mechanisms, all supplied by Moffitt, such as wall louvers, roof fans and electric unit heaters. To ensure worker safety and a safe operating temperature for the power turbines all of these components must work as one.

The mechanisms are activated one of three ways: from a control box, automatic activation when the facility reaches a certain temperature or when the sensor in the gasification tower hits its limit. This helps keep the interior area properly ventilated in the safest and most efficient manner.

Moffitt Mechanical was able to install a complete ventilation system meeting all of the unique requirements of this facility.

Contact Moffitt About Meeting your Facility’s Needs Today.

Client: Golden Spread Elec Co-Op
Application: Natural Gas Power Plant
Location: Abernathy, TX

Project Summary:
Installed general building ventilation equipment for turbine building Installed specialized HVAC for conditioned interior spaces.
Four (4) Large Monovent Natural Ventilators 144' x 72”
One (1) Centrifugal Wall Mount - Model UCEBW-12-1/4, 12” diameter
Two (2) Hooded Roof Exhaust Fan 48” diameter
One (1) Two-Way Diffuser - 36 Model DF-45-1

Project Profile:
Golden Spread Electric Cooperative built a 170 MW Gas-Fired Power Plant to produce energy for over 200,000 customers. The facility utilizes 18 gas turbines to produce desired output.

Moffitt Mechanical installed a ventilation system provided by Moffitt Corporation consisting of a natural roof mounted ventilator and wall supply fans to pressurize the facility and provide intake air for the turbines. The design utilized at this facility is a near duplicate to a ventilation system provided by Moffitt for South Texas Electric Cooperative.

In addition to the general plant ventilation Moffitt Mechanical designed, supplied and installed HVAC products for interior conditioned spaces consisting of MCC Rooms, Switchgear Rooms, Battery Rooms and compressor rooms.

Moffitt Mechanical then finished the project with test/balance and startup/commissioning of these areas to ensure reliability. With Moffitt, you will know your system works.

Ask the Moffitt Team How We Can Put Our Power Plant Experience To Work On Your Project.