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Greenhouse gas emissions with natural and balanced ventilation.

Number: pap. 478

Author(s) : HEIDE V., HAASE M.

Summary

Global warming due to increased emissions of CO2 has led to more focus on decreasing energy consumption and greenhouse gas emissions caused by buildings. In Norway, balanced ventilation with heat recovery is the most recommended solution for a low-emission building. To find out more about how sustainable this concept is, a model building with balanced ventilation is compared to the same building with natural ventilation in several cases. These are calculated in the computer-program SIMIEN, mainly with Oslo-climate. A sensitivity analysis of several parameters is also done. The calculations indicate that the total greenhouse gas emissions in a lifetime perspective from a house with natural ventilation can be as low as from a house with balanced ventilation. A typical Norwegian passive house heated with electricity seems to have higher greenhouse gas emissions than a naturally ventilated house with 50% of the space heating covered by biofuel. A naturally ventilated house with pre-heating of air in an earth heat exchanger, and reduced air change rate at daytime when people are out, can have equally low global warming potential as a typical passive house, when both have electric heating. This indicates that natural ventilation, especially in a concept with wood-pellets, or district heating, can achieve very low total greenhouse gas emissions.

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Pages: 10 p.

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Details

  • Original title: Greenhouse gas emissions with natural and balanced ventilation.
  • Record ID : 30009227
  • Languages: English
  • Subject: Environment
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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