TY - GEN
T1 - Air-heating solar collectors for humidification-dehumidification desalination systems
AU - Summers, Edward K.
AU - Lienhard V, John H.
AU - Zubair, Syed M.
PY - 2010
Y1 - 2010
N2 - Relative to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HDH) Desalination cycle, air heating accounts for advantages in cycle performance. Solar collectors can be over 40% of an air-heated HDH system's cost, thus design optimization is crucial. Best design practices and sensitivity to material properties for solar air heaters are investigated, and absorber solar absorptivity and glazing transmissivity are found to have the strongest effect on performance. Wind speed is also found to have an impact on performance. Additionally a well designed, and likely low cost, collector includes a double glazing and roughened absorber plates for superior heat transfer to the airstream. A collector in this configuration performs better than current collectors with an efficiency of 58% at a normalized gain of 0.06 K m2/W.
AB - Relative to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HDH) Desalination cycle, air heating accounts for advantages in cycle performance. Solar collectors can be over 40% of an air-heated HDH system's cost, thus design optimization is crucial. Best design practices and sensitivity to material properties for solar air heaters are investigated, and absorber solar absorptivity and glazing transmissivity are found to have the strongest effect on performance. Wind speed is also found to have an impact on performance. Additionally a well designed, and likely low cost, collector includes a double glazing and roughened absorber plates for superior heat transfer to the airstream. A collector in this configuration performs better than current collectors with an efficiency of 58% at a normalized gain of 0.06 K m2/W.
UR - http://www.scopus.com/inward/record.url?scp=84860538297&partnerID=8YFLogxK
U2 - 10.1115/IHTC14-23214
DO - 10.1115/IHTC14-23214
M3 - Conference contribution
AN - SCOPUS:84860538297
SN - 9780791849422
T3 - 2010 14th International Heat Transfer Conference, IHTC 14
SP - 573
EP - 581
BT - 2010 14th International Heat Transfer Conference, IHTC 14
ER -
