TY - GEN
T1 - An experimental and theoretical study of finned and finless heat sinks for low profile applications
AU - Stafford, Jason
AU - Walsh, Ed
AU - Egan, Vanessa
AU - Walsh, Pat
AU - Muzychka, Yuri S.
PY - 2009
Y1 - 2009
N2 - This paper discusses the importance of developing cooling solutions for low profile devices. This is addressed with an experimental and theoretical study on forced convection cooling solution designs that could be implemented into such devices. Conventional finned and corresponding finless designs of equal exterior dimensions are considered for three different heat sink profiles ranging from 1mm to 4mm profile in combination with a commercially available radial blower. The results show that forced convection heat transfer rates can be enhanced by up to 55% using finless designs at low profiles with relatively small footprint areas. The advantages of both finned and finless geometries are presented along with the limitations of the customary finned heat sink design at low profile scales. The results also show large increases in heat transfer rates over that predicted which can be attained at the low profile scale based on geometry selection. Dimensionless comparisons are made between experimental results and combined hydrodynamic and thermally developing duct flow theory which is representative of the flow regime within both the finned and finless geometries. Overall, this paper provides optimization and geometry selection criteria which are relevant to designers of low profile cooling solutions.
AB - This paper discusses the importance of developing cooling solutions for low profile devices. This is addressed with an experimental and theoretical study on forced convection cooling solution designs that could be implemented into such devices. Conventional finned and corresponding finless designs of equal exterior dimensions are considered for three different heat sink profiles ranging from 1mm to 4mm profile in combination with a commercially available radial blower. The results show that forced convection heat transfer rates can be enhanced by up to 55% using finless designs at low profiles with relatively small footprint areas. The advantages of both finned and finless geometries are presented along with the limitations of the customary finned heat sink design at low profile scales. The results also show large increases in heat transfer rates over that predicted which can be attained at the low profile scale based on geometry selection. Dimensionless comparisons are made between experimental results and combined hydrodynamic and thermally developing duct flow theory which is representative of the flow regime within both the finned and finless geometries. Overall, this paper provides optimization and geometry selection criteria which are relevant to designers of low profile cooling solutions.
UR - http://www.scopus.com/inward/record.url?scp=77952832457&partnerID=8YFLogxK
U2 - 10.1115/HT2009-88200
DO - 10.1115/HT2009-88200
M3 - Conference contribution
AN - SCOPUS:77952832457
SN - 9780791843567
T3 - Proceedings of the ASME Summer Heat Transfer Conference 2009, HT2009
SP - 801
EP - 812
BT - Proceedings of the ASME Summer Heat Transfer Conference 2009, HT2009
T2 - 2009 ASME Summer Heat Transfer Conference, HT2009
Y2 - 19 July 2009 through 23 July 2009
ER -