Design of Condensing Heat Exchangers for Recovery of Heat and Water from Flameless Combustion Flue Gas

, M.Sc. Thesis Sharif University of Technology Homaei, Shabnam (Author) ; Saboohi, Yadollah (Supervisor)

Abstract

The exit flue gas temperature of conventional gas fired boiler is generally high and considerable energy is lost to environment. Therefore, new methods are needed to recover water and heat from boiler flue gas in order to reduce overall plant water consumption as well as to increase energy efficiency and mitigate detrimental emissions. This project involved design of a heat and water recovery system including condensing heat exchangers to be used in residential buildings. In this project based on simulation of heat and water recovery system the recoverable amount of heat and efficiency improvement potential at various conditions such as different exit flue gas temperatures and different...

3D design of steel structures with considering nonlinear base shear distribution and seismic energy

, Article Structures ; Volume 37 , 2022 , Pages 82-94 ; 23520124 (ISSN) Ghamari, M ; Shooshtari, M ; Homaei, H ; Sharif University of Technology

Elsevier Ltd 2022

Abstract

Current seismic design codes use lateral load distributions that do not consider 3D structural behavior, nonlinear structural state, and soil-structure interaction. Moreover, calculated seismic force does not reflect the energy content of the earthquake and record-to-record variability in its lateral distribution. This research proposes a new design procedure for steel structures that reach nonlinear state to address the mentioned shortcomings. First, nine 3D 6-story steel structures in 3 different soil types and three different structural systems are analyzed under 12 earthquakes for each soil type. Soil-structure interaction is taken into account using the cone model. Then, the general...

Analytical and Parametric Study of Telescopic Lead Shear Damper

, M.Sc. Thesis Sharif University of Technology Homaei, Hossein (Author) ; Eskandari, Morteza (Supervisor) ; Arghavani, Jamal (Supervisor)

Abstract

This research studies behavior and implementing of telescopic lead shear damper in structures. Telescopic lead shear damper (TLSD) is a type of metallic yielding dampers that can dissipated energy with usage of shear yielding of lead. TLSD is made from behind act of two lead shear damper (LSD) like a telescope. Lead shear damper composed of two coaxial steel pipes where their interfacial gap is filled with pure lead. The interface of lead and steel pipes are roughened in a threaded form to guarantee the no-slip condition across the interface. Due to stable and fat force displacement hysteresis loops of TLSD, this device can be used in structures subjected to wind, seismic, and other dynamic...