March 2013

Optimization of a passive vehicle suspension system for ride comfort enhancement with different speeds based on design of experiment method (DOE) method

  This paper reported on an investigation to determine the spring and damper settings that ensured optimal ride comfort of vehicle in different speeds using design of experiment method (DOE). The extent to which the ride comfort optimal suspension settings vary for roads of different roughness and varying speeds and the levels of ride comfort that can be achieved, were addressed. Optimization was performed with...

Author(s):   Javad Marzbanrad, Masoud Mohammadi and Saeed Mostaani      

March 2013

Mathematical formalism of an internal air flow through a vortex tube machine of Hilsch-Ranque type: An analytical representation for velocity field

  In this paper, we will attempt to derive an analytical representation of velocity field for the concept of an internal air flow inside a vortex tube machine of Hilsch-Ranque type. The basic assumption here is that the flux field is assumed to be steady and incompressible.Τhe vector which denotes instantaneous velocity, for the description of the flux field...

Author(s):   J. Venetis and E. Sideridis,    

March 2013

Towards sustainable energy utilisation: An analysis of various cooking fuel options in Malawi

  In Malawi, nearly all (95% rural and 55% urban) households depend on firewood and charcoal for cooking. Consequently, domestic cooking is contributing to unsustainable exploitation of forests which result into various adverse socioeconomic and environmental effects. On the other hand, recent scholarship has shown that cooking using other energy sources such as electricity, biogas, ethanol/gelfuel, liquefied...

Author(s):   Nkhonjera L. K, Hameer S. and Kosamu I. B. M.