Make-Up Air Unit for Distribution Center - A Case Study

make up air distribution center

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Overview

QuickTrip is a chain of convenience stores based in Tulsa, Oklahoma. At their distribution center and production facility they were interested in a heating system. The production facility makes sandwiches, bakery items, as well as other food items and distributes them to their 600+ locations. From there the fresh food products are distributed throughout their stores.

Problem

The distribution warehouse is a large facility located in Belton, MO. Trucks are able to drive up to the warehouse to have their truck loaded.

Also, inside the distribution center is a food production sector. This sector is kept at approximately 35 degrees Fahrenheit. This is to create a large walk-in cooler type atmosphere.

After the food preparation is complete the area is thoroughly cleaned before the following shift.

This leaves a small window of opportunity to complete the sanitation and cleaning duty. Furthermore, without the proper airflow leads to an extended amount of time for cleaned surfaces to dry.

Wet surfaces in a cold room will lead to issues such as ice buildup or bacteria growth. Excess water is also a safety hazard that could potentially lead to employee injury.

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Solution

To solve the problem of drying a wet room before the next shift, 5 AbsolutAire direct-fired make-up air units were installed. This allowed the facility to be cleaned and then quickly filled with very hot air. The rapid flow of the air allowed the room to dry quickly.

Since heat was being pushed so quickly into the room the safety precautions were taken. On each make-up air unit a low temperature limit switch was installed. In the event of a burner failure the unit is able to be turned off.

Another safety feature was 1” aluminum filters that were mounted in the inlet hoods. This was a precaution for birds and other contaminants from entering the clean rooms.

Conclusion

Installed 5 direct fired make-up air units proved effective. The facility is cleaned on a regular basis and very hot air is pumped into the room to ensure it’s dry before the following shift. 

The result is more productivity from staff due to less downtime waiting for the room to dry. The longevity of cooling equipment is not affected since it is cleaned. Lastly, employees are safe working in a clean and dry environment.

Since heat was being pushed so quickly into the room the safety precautions were taken. On each make-up air unit a low temperature limit switch was installed. In the event of a burner failure the unit is able to be turned off.

Another safety feature was 1” aluminum filters that were mounted in the inlet hoods. This was a precaution for birds and other contaminants from entering the clean rooms.

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