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The benefits of buried ducts - beyond what we know today.

Number: 3556

Author(s) : EVANS R., PALLIN S., SAECHAO K.

Summary

Burying your ventilation ducts inside attic insulation can save you money. Yet, this installation approach is not very common. Traditionally, and most commonly, ducts are suspended from the roof trusses and therefore located in the attic space. However, when ducts are partially or fully buried within loose fill insulation, the overall thermal resistance between the air inside the ducts and that of the attic increases significantly, resulting in less energy losses. There is also an expected increase in service-life of buried ducts since, when buried, they are not as exposed to extreme attic temperatures as suspended ducts.
Some of the previous work on buried ducts has underestimated the thermal benefits of buried ducts. This paper presents how the thermal performance of buried ducts can be more accurately assessed depending on various variables such as duct diameter, duct insulation value, attic insulation level and material, as well as temperature boundary conditions.
In addition, this paper investigates reasons for a currently lower adoption rate of buried ducts and also identifies potential market barriers, installations issues, and any other industry concerns. Furthermore, other reasons are considered related to the complexity of the compliance and enforcement process, and any other regulatory context which complicates the adoption of buried ducts.

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Pages: 10 p.

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Details

  • Original title: The benefits of buried ducts - beyond what we know today.
  • Record ID : 30032912
  • Languages: English
  • Subject: Technology
  • Source: 2024 Purdue Conferences. 8th International High Performance Buildings Conference at Purdue.
  • Publication date: 2024/07/15

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