Abstract

Tall structures and towers have captivated humans for thousands of years, and so they are a fact of modern life in cities for a variety of reasons. However, the most challenging design problem is meeting operational performance requirements and maintaining occupant comfort. Not only are the site energy costs high, the attendant environmental consequences of using non-renewable energy sources are great. This fact prompted searchers and designers to advance and fully embrace green and environmentally friendly design. One of the key goals of the green building movement and technique is to reduce the material, constructional, and operational costs of buildings. This goal can be accomplished by drawing on the synergies

between building geometry, material usage, and the local climate demands. Architect Ken Yeang, in his famous book The Green Skyscraper, suggests that in different climate zones, they should be arranged in different locations to reduce the yearly energy consumption of the building. But Yeang’s claim of the structural system parameters have clear implications for structural performance since buildings with asymmetric distribution of stiffness are known to be susceptible to damaging torsional modes of vibration when subjected to wind or earthquake loading. Thus, this study performs thermal and structural analysis to address the implications of different footprints and core placements on energy and structural performance. The results demonstrate that to accomplish Yeang's claim, a supplementary lateral load resistance system is needed, which demands additional structural material. As a result, buildings with an asymmetric distribution of stiffness are the most expensive, which has a negative impact on the building's

environmental and economic aspects.

Abstract: We employ Abaoub - Shkheam transformation to solve linear Volterra integro-differential equation of the first kind, we considered the kernel of that equation is a deference type kernel. Moreover, we prove the existence and uniqueness of solutions of the equation under some conditions in the Banach space and fixed-point theory. Finally, some examples are included to demonstrate the validity and applicability of the proposed technique. 

This paper has two main objectives. First, it analyzes the key short-term sources of inflation in Libya, and reviews trends depicting these relationships. Second, based on this analysis, it develops a model that serves to forecast short-term inflation. The developed model offers policymakers an instrument to forecast inflation, and to determine if double-digit inflation will prevail in coming months as has occurred in similar periods when oil revenues have sharply fallen.The test for long run relationship of bounds testing approach shows that there is a cointegrating relationship between the consumer price index and parallel exchange rate and the money supply. The findings presents a ground for policy makers to forecast inflation within the short-term framework.

ABSTRACT

In present day triple tube heat exchanger is the most common type heat exchanger widely use in ventilation & air conditioning systems, oil refinery and other large chemical process, because it suits high pressure application. The process in solving simulation consists of modelling and meshing the basic geometry of triple tube heat exchanger using CFD package ANSYS 14.0. The objective of the project is design of triple tube heat exchanger and study the flow and temperature field inside the triple tube using ANSYS software tools. The heat exchanger contains 3 tubes and 500 mm length triple tube diameter 75 mm. In simulation will show how the flow pattern in the triple tube of the heat exchanger with heat transfer effects the efficiency due to the new design of the geometry of triple tube, which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger spaced reduced