Papers by Delight M Sedzro
Wind-driven heat transfer accounts for a major portion of solar collector losses and is significa... more Wind-driven heat transfer accounts for a major portion of solar collector losses and is significantly influenced by local structures and geometry. Parapets are an extension of a wall at the edge of a roof or other building structure. Traditionally, they have served multiple purposes; as safety features to prevent falls from elevated walkways or roofs, as defensive structures in castles and, as architectural features that create the illusion of an aesthetically pleasing flat roof. More recently, they have been the subject of discussion as to their impact on the aerodynamic loading of roof structures. In this vein, several studies have shown that parapets can make a significant impact on the wind loads experienced by roof structures. Hence as solar collectors, both thermal and photovoltaic, become more prevalent in the built environment, there is a need to understand how parapet structures impact their performance. In this study, the wind flow over an isolated low-rise flat-roof build...
Wind-driven heat transfer accounts for a major portion of solar collector losses and is significa... more Wind-driven heat transfer accounts for a major portion of solar collector losses and is significantly influenced by local structures and geometry. Parapets are an extension of a wall at the edge of a roof or other building structure. Traditionally, they have served multiple purposes; as safety features to prevent falls from elevated walkways or roofs, as defensive structures in castles and, as architectural features that create the illusion of an aesthetically pleasing flat roof. More recently, they have been the subject of discussion as to their impact on the aerodynamic loading of roof structures. In this vein, several studies have shown that parapets can make a significant impact on the wind loads experienced by roof structures. Hence as solar collectors, both thermal and photovoltaic, become more prevalent in the built environment, there is a need to understand how parapet structures impact their performance. In this study, the wind flow over an isolated low-rise flat-roof build...
Is this the right time for Sudan to replace diesel-powered generator systems with wind turbines?
Renewable Energy
Novel in the discussion of slow steaming is the type of vessel being subjected (Product Tanker). ... more Novel in the discussion of slow steaming is the type of vessel being subjected (Product Tanker). Prior to this paper, the talk of slow steaming has always impinged on Container vessels. The shipping industry being a truly global industry, although being passionate about her past (one in which the idea was to get cargo and goods delivered as fast as possible thus encouraging sailing at elevated speed) presents herself to be thoroughly excited about its present and future (one in which the idea is to go slower while checking the CO2 footprint of the vessel). Using a 50,000DWT Product Tanker, embarking on a round trip between the seaports of Rotterdam and Singapore, slow steaming is shown to minimise fuel consumption during each vessels’ voyage. In addition, emissions of Carbon dioxide (CO2), Oxides of Sulphur (SOx) and Oxides of Nitrogen (NOx) are depicted to reduce with progressive reduction in operating speed. Furthermore, slow steaming is seen to reduce earnings as well as number of trips possible annually. It however leads to an improvement in both daily and annual revenue for this Ship. Comparing the impact of slow steaming, it was seen that this improvement in revenue becomes less pronounced for a higher freight rate as was the case at the time of writing (2012) and more pronounced for a lower freight rate as was the case five years prior to the completion of this paper (2007). The argument involving the interplay between speed reduction (optimal speed) and freight rate is equally an exciting variable/construct featuring in this discussion on slow steaming.
Keywords: Slow steaming, freight rate, fuel consumption, emissions
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Papers by Delight M Sedzro
Keywords: Slow steaming, freight rate, fuel consumption, emissions
Keywords: Slow steaming, freight rate, fuel consumption, emissions