Design, Optimization and Economic Feasibility of Absorption Refrigeration System Using (Lithium Bromide + Water) as Working Pair

Abstract

The global warming and energy crisis have become two most important environmental problems of this twenty-first century. To overcome these problems, scientists have worked on inventing different devices to lessen this impact. Vapour absorption refrigeration cycles are the products of this ideology. Absorption refrigeration cycle generally works on the solar energy, but it can also very well work on waste heat sources i.e. heat generated from data centres, different industries and from large hotels. If this waste heat is being used then not only energy crisis will decrease but also environment pollution will reduce to a greater extent. Though industrial point of view, absorption refrigeration cycle is an old concept, but from academic point, there is still needed a lot of works to be carried out to visualise different aspects like its performance, heat and mass coefficients and fluxes. This project work is based on the simulation, optimum designing as well as finding out the economic feasibility. LiBr + water is taken as the working pair to do the simulation, analysis and design of an absorption refrigeration cycle. At the end of this project work, economic feasibility has also been found out. When compared with a vapour compression refrigeration cycle, it can be visualized that the vapour absorption refrigeration system has an annual profit of around Rs. 7500/- which shows the economical viability of this refrigeration system.