Steady state simulation of the operation of an evaporative cooled water-ammonia absorption scale ice maker with experimental basis

Abstract

A steady-state model is presented of the operation of a water-ammonia absorption system for production of scale ice. The model involves relations of thermodynamics, heat transfer, and fluid mechanics, and uses simplifying assumptions for the internal mass transfer processes, leading to a non-linear system with more than 100 unknowns and equations, that are reduced to a dimension-10 Newton-Raphson problem by means of the Substitution-Newton-Raphson approach. The model was validated against experimental data with good agreement

Experimental investigations of a small‐scale solar‐assisted absorption cooling system

“…The impact of working temperature and heat effects on the thermal load and coefficient of performance (COP) were determined using a thermodynamic analysis of the absorption cycle. Silverio and Figueiredo 6 performed the thermodynamic analysis of the ammonia water absorption system. In the last two decades, the awareness for small capacity absorption chiller, particularly under 20 kW has seen development with apprehension due to concerns related to the atmosphere and climate as well as an increasing cooling request for residential buildings and smaller work applications.…”