Dynamical Studies with a Semi Virtual Testing Approach for Characterization of Small Scale Absorption Chiller
Abstract
Within the ABCLIMSOL project, a dynamical and semi-virtual testing approach for the characterization of absorption chillers has been developed by CEA/INES in order to have a better understanding of the small absorption chiller,. A methodology has been developed in order to select three representative summer days. These days generate the different functioning conditions met by a solar cooling system (variability of solar energy resource and cooling loads). The development of this test sequence has been done with a complete system modelled within TRNSYS 16 using a simplified model of absorption chiller. Validations of this test sequence have been done using the experimental facilities of CEA/INES and EDF R&D. Three H2O/LiBr chillers have been tested according to this method. Moreover static tests results from EDF R&D and CETIAT have been used in order to develop three simplified models of these absorption chillers. For defined virtual system (building loads, heat and cold storage volume, collector area …) and climatic conditions, the combination of dynamic and steady state experimental results provides important information regarding the operating limits, the inertial times and the performances of these chillers.