Change search
ReferencesLink to record
Permanent link

Direct link
Analysis of Passive Cooling And Heating of Ventilation Air in a Buried Intake Culvert
Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Electrical Power Engineering.
2013 (English)MasteroppgaveStudent thesis
Abstract [en]

Passive ventilation is becoming increasingly important due to more focus on limiting electricity for ventilation purposes. Underground culverts may be utilized to achieve preheating or precooling of the intake air. Therefore it represents a possible measure to reduce the electricity usage used for heating and cooling. In order to assess the possible heating and cooling performance of a culvert situated at Grong primary school, the impact of rotational versus uniform inflow on the convective heat transfer has been examined in a CFD model. The results from this model have been compared to measurements performed at Grong and other similar experiments. Based on this, a heat performance model was created in ESP-r incorporating a heat convection model and one-dimensional heat conduction model together with local weather data from Grong. The model showed that the culvert might be used for heating during fall and winter when the ambient temperature is low compared to the ground temperature. For the spring, the culvert provides undesirable cooling. During the summer when the ambient temperature is high enough, the culvert can provide cooling in the hottest days.

Place, publisher, year, edition, pages
Institutt for energi- og prosessteknikk , 2013. , 138 p.
URN: urn:nbn:no:ntnu:diva-22690Local ID: ntnudaim:10202OAI: diva2:651449
Available from: 2013-09-25 Created: 2013-09-25 Last updated: 2013-09-25Bibliographically approved

Open Access in DiVA

fulltext(8149 kB)359 downloads
File information
File name FULLTEXT01.pdfFile size 8149 kBChecksum SHA-512
Type fulltextMimetype application/pdf
cover(184 kB)14 downloads
File information
File name COVER01.pdfFile size 184 kBChecksum SHA-512
Type coverMimetype application/pdf

By organisation
Department of Electrical Power Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 359 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 50 hits
ReferencesLink to record
Permanent link

Direct link