Manufacturing Plant

Indoor vertical heater installation

FACILITY: Steel Plant - Indiana

PROBLEMS:

• Provide heat and ventilation for a new 500' x 155' x 38' high pre-engineered, insulated metal building with 4" roof insulation and 3" wall insulation.
• Heating system cannot interfere with overhead crane which runs length of the building.
• Must maintain low humidity and good air/heat circulation to prevent flash rust on finished steel.
• Fresh make-up air is needed for the pickler operation.
• Looking for best heating system with Lowest Total Cost (owning, operating & maintenance).

SOLUTIONS:

• Cambridge multi-zone system with heaters placed at each end of the building to provide good air circulation.
• Vertical mounting through the end walls to avoid interference with the crane.
• Heaters located near active loading doors for quick response to cold air drafts from open doors.
• During summer, the burners are turned off and the blowers are used to ventilate the building.

RESULTS:

• The temperatures have been consistently even throughout the 78,000 sq. ft. building.
• Problems with flash rust of stored steel have been drastically reduced.
• Facility was properly ventilated resulting in good indoor air quality.
• Another satisfied customer who later used Cambridge in four other manufacturing plants.

The General Manager for this facility said:

• "Before selecting Cambridge Blow-Thru™ Space Heaters, we considered and rejected the following heating systems:
  • Unit Heaters - inefficient and flues would interfere with the overhead crane
  • Air Turnover - installation and operating costs are too high
  • Infrared - inadequate heating and no air circulation
  • Direct Gas-Fired 80/20 (Air Pressurization) - we did not want to recirculate contaminated indoor air."


• "One of my main concerns was flash rust on the finished steel from humidity and poor air circulation. The Cambridge heaters were the perfect solution. In four years of operation, problems with flash rust have been dramatically reduced!"



• "Though Cambridge systems normally operate on an intermittent basis, we often run our system in a continuous mode to supply additional make-up air. Cambridge heaters bring in 100% outside air and keep the air moving in our facility, reducing the humidity. I appreciate this flexibility."