Two cased studies from eTech with plants in the food processing industry, show some of the remarkable efficiencies that can be gained by adding the right equipment. 

Case Study #1 – Food Processing Plant: Condensing Economizer

Assumptions:

• Original boiler efficiency 86%
• Fuel cost $7.8 per mm Btu
• Average load 8200 hrs/yr at 80%

Application:

• Simple condensing, preheating make-up water
• 40,000 pph and 60,000 pph (150 psig)

Analysis

• Installed cost of $680,000
• Annualized fuel savings of $640,000
• Simple payback just under 13 months

  

Case Study #2 – HJ Heinz Processing Plant: Circular Econopak

Application:

• Circular Econopak designed and manufactured for natural gas-fired 400 hp fire-tube steam boiler

Analysis:

• Stack gas temperature lowered from 480º F to 350º F at full-fire conditions
• Water tempurature in economizer increased from 227º F to 275º F
• 165º F differential translates to fuel savings of 674,123 Btu/hr at full fire
• 4% increase in boiler efficiency

For more info about condensing economizers, Econopaks, and other efficiency solutions, contact Campbell-Sevey.