A New Perspective of Analysis and Optimization for Absorption Thermal Energy Storage System Based on Entransy Theory

Abstract

Abstract Absorption thermal energy storage system is a new technology with promising future. This contribution proposes a new perspective to analyze this kind system and introduces the entransy dissipation-based thermal resistance theory to optimize the system. The analogy between heat transfer and electric conductance, integration of the heat transfer and the phase change yield a new physical image and a direct mathematical model to describe the physical relation between the design requirements and the unknown design parameters, i.e. the heat transfer area, the heat capacity of each heat exchanger. Then the optimization problem converts to a conditional extremum problem applying the mathematical model. Finally, two examples are taken to testify the validity of the new method.