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Comparison of Mixed and Stratified Ventilation Systems in Production Areas: Experimental and Simulation Studies

[+] Author Affiliations
Mirko Schäfer, Johannes Wagner, Jens Hesselbach

University of Kassel, Kassel, Hesse, Germany

Long Phan, Cheng-Xian Lin

Florida International University, Miami, FL

Paper No. HT2013-17646, pp. V004T13A006; 9 pages
doi:10.1115/HT2013-17646
From:
  • ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
  • Volume 4: Heat and Mass Transfer Under Extreme Conditions; Environmental Heat Transfer; Computational Heat Transfer; Visualization of Heat Transfer; Heat Transfer Education and Future Directions in Heat Transfer; Nuclear Energy
  • Minneapolis, Minnesota, USA, July 14–19, 2013
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-5550-8
  • Copyright © 2013 by ASME

abstract

Ventilation system can have significant influences on the energy consumption, especially in factories with high thermal loads. To remove generated thermal and mass loads from manufacturing areas, several mechanisms can be applied: mixing and layering ventilation.

This paper shows experimental studies to compare mixed and stratified ventilation systems for industrial buildings. These experiments were conducted in a factory model with a scale of 1:2.5. The measurements consist of vertical distribution of carbon dioxide concentration and temperature in the ambient room. Additionally, a simulation study was conducted based on the same factory model to predict the annual energy demand of mixed and stratified ventilation systems in different climatic regions. The simulation models were validated with measurements from machines and devices in the authors’ laboratories and in the factories of project partners.

The results show advantages in airflow, air quality, cooling capacity and energy demand at different climatic zones when using stratified ventilation.

Copyright © 2013 by ASME

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