Heat and Mass Transfer Properties of Water-LiBr Solution in a Plate Type Falling Film Absorber
Abstract
Absorption chillers have a great potential for sustainable cooling, especially when the process is driven by heat from solar thermal collectors. In this study, plate heat exchangers for the use in falling-film absorption processes are investigated. Plate heat exchangers could be a cheap alternative for the nowadays usually applied shell and tube heat exchangers, especially for small scale devices. The main goal of the study is to experimentally analyze the influence of different surface structures on the fluid flow and on the absorption process. The obtained data is processed to extract heat and mass transfer coefficients, which are compared.