Exhaust Hood and Makeup Air Optimization
Improperly designed and controlled exhaust hoods and makeup air units often operate at constant flow rates for long periods of time. Such operation generates significant energy waste and can create uncomfortable working conditions. The objective of this project is to alleviate these inefficiencies by optimizing exhaust hoods and related makeup air units in dining facilities. Technology demonstrations will take place at Fort Lee, New Jersey, and Ellsworth Air Force Base, South Dakota.
The technology to be demonstrated integrates an optical sensor for detection of smoke and cooking vapors with a temperature sensor placed inside the ductwork connected to the exhaust hood. This sensor network is interfaced with a control unit that varies the flow rate through the exhaust hood via a variable frequency motor drive. The exhaust flow rate is relayed to the controller of the makeup air unit, which adjusts its flow rate accordingly. Additional efficiencies are achieved through optimization of hood design and appliance positioning.
This technology enables more efficient capture of exhaust fumes, resulting in a more comfortable kitchen environment and significant energy savings. Reduced noise levels, increased grease capture, and reduced wear on HVAC equipment are additional benefits. This technology also can be applied to achieve similar benefits in DoD vehicle maintenance facilities and paint spray booths. (Anticipated Project Completion - 2013)
Points of Contact
Mr. David Underwood
U.S. Army ERDC-CERL
Energy and Water
SERDP and ESTCP
- Fact Sheet - Brief project summary with links to related documents and points of contact.
- Final Report - Comprehensive report for every completed SERDP and ESTCP project that contains all technical results.
- Cost & Performance Report - Overview of ESTCP demonstration activities, results, and conclusions, standardized to facilitate implementation decisions.
- Technical Report - Additional interim reports, laboratory reports, demonstration reports, and technology survey reports.
- Guidance - Instructional information on technical topics such as protocols and user’s guides.
- Workshop Report - Summary of workshop discussion and findings.
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