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Effects of windblown dust on photovoltaic surfaces on MarsPhotovoltaic (PV) coverslip material was subjected to Martian dust storm conditions using basaltic dust flowing through the Martian Surface Wind Tunnel at NASA Ames. Initially dusted and clear coverslips were held at angles from 0 to 90 deg., and the dust laden wind velocity was varied from 20 to 97 m/s. Blowing dust was found to adhere more to the coverslips as the angle was increased. However, dust was partially cleared from surfaces that were initially dusted at substantially lower velocities in dust laden wind than in clear wind. Thus, an equilibrium amount of dust accumulated which was dependent only upon angle and wind velocity and not upon initial concentration of dust. Abrasion was also evident in the coverslips. It increased with wind velocity and angle of attack. It appears that an initial dust layer may help to protect PV surfaces from abrasion.
Document ID
19920067949
Document Type
Conference Paper
Authors
Gaier, James R. (NASA Lewis Research Center Cleveland, OH, United States)
Perez-Davis, Marla E. (NASA Lewis Research Center Cleveland, OH, United States)
Moinuddin, Alia M. (Case Western Reserve University Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE)
Meeting Information
IECEC ''91: Intersociety Energy Conversion Engineering Conference(Boston, MA)
Distribution Limits
Public
Copyright
Other