Browsing by Author "Gwamuri, Jephias"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    General Design Procedures for Airport-Based Solar Photovoltaic Systems
    (MDPI, 2017-08-12) Anurag, Anurag; Zhang, Jiemin; Gwamuri, Jephias; Pearce, Joshua M.
    : A source of large surface areas for solar photovoltaic (PV) farms that has been largely overlooked in the 13,000 United States of America (U.S.) airports. This paper hopes to enable PV deployments in most airports by providing an approach to overcome the three primary challenges identified by the Federal Aviation Administration (FAA): (1) reflectivity and glare; (2) radar interference; and (3) physical penetration of airspace. First, these challenges and precautions that must be adhered to for safe PV projects deployment at airports are reviewed and summarized. Since one of the core concerns for PV and airport symbiosis is solar panel reflectivity, and because this data is largely estimated, a controlled experiment is conducted to determine worst-case values of front panel surface reflectivity and compare them to theoretical calculations. Then a general approach to implement solar PV systems in an airport is outlined and this approach is applied to a case study airport. The available land was found to be over 570 acres, which would generate more than 39,000% of the actual annual power demand of the existing airport. The results are discussed while considering the scaling potential of airport-based PV systems throughout the U.S.
  • Thumbnail Image
    Item
    Investigating light propagation In turbid media by evaluating optical properties Of phantom tissues.
    (2014-11) Gwamuri, Jephias
    To study how light behaves inside a highly diffusing medium such as biological tissues; it is necessary to know the optical properties of the media. We investigated how light propagates inside turbid media by evaluating the optical properties of phantom tissues. The studies were performed, in vitro by measuring optical properties of the medium. The properties to be measured were the absorption coefficient a  , the scattering coefficient, s   and the asymmetry factor g. The phantom tissue which was evaluated was milk with the following results being obtained: a  = 3.5 x 10-1 mm-1, s   = 0.567 mm-1, s  = 25.57 mm-1, and g = 0.8803.