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Mathematical Modelling of Stack-Driven Natural Ventilation in Buildings

[+] Author Affiliations
Sudhakar Subudhi

Indian Institute of Technology, Roorkee, India

Paper No. ES2014-6491, pp. V002T06A004; 6 pages
  • ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology
  • Volume 2: Economic, Environmental, and Policy Aspects of Alternate Energy; Fuels and Infrastructure, Biofuels and Energy Storage; High Performance Buildings; Solar Buildings, Including Solar Climate Control/Heating/Cooling; Sustainable Cities and Communities, Including Transportation; Thermofluid Analysis of Energy Systems, Including Exergy and Thermoeconomics
  • Boston, Massachusetts, USA, June 30–July 2, 2014
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4587-5
  • Copyright © 2014 by ASME


In this paper, mathematical modeling of stack-driven natural ventilation in buildings is performed. Stack-driven natural ventilation is due to only buoyancy forces generated by the presence of heat sources at the bottom of the room. There are two cases have been taken: (1) Transient natural ventilation in fully insulated buildings and (2) Transient natural ventilation in partially insulated buildings. In first case, it is assumed that there is no heat transfer through walls and roof and only heat transfer through openings of door and window. Also there is a distributed heat source at the floor. Since the convection is at a high Rayleigh number, the room can be assumed to have a well-mixed interior. The complex heat balance equations are solved analytically for the internal temperature.

Copyright © 2014 by ASME



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