Heat recovery from bottom ash is more important in municipal waste combustion systems than in any other solid fuel combustion since almost 507o of it comprises of non-combustibles. In this study, an ash cooling system using air as the cooling medium has been modeled for pre-heating the combustion air. Air cooling has several advantages over water cooling methods. The study involves modeling using Gambit tool and is solved with the fluent solver.

Heat transfer across building wall systems (BWS) is now a globally important research topic that bears wide
consequences on energy consumption as well as conservation in buildings. The numerous analytical and numerical
works carried out in this area, especially in the GCC countries, requires actual experimental results in order to validate
these studies. This paper is a description of the planning and implementation process used to construct one such