NUMERICAL ANALYSIS OF HEAT PUMP MODELS. COMPARATIVE STUDY BETWEEN EQUATION-FIT AND REFRIGERANT CYCLE BASED MODELS

摘要

An equation-fit (EF) and a refrigerant cycle (RC) based heat pump models have been implemented,rnvalidated, analyzed and compared to each other under steady state conditions for a brine to water heatrnpump. Models validations have been provided through comparisons against experimental data obtainedrnat ISFH. The advantages and disadvantages of the both models have been identified. This work providesrnsignificant inputs regarding the selection of a specific model depending on the needs. Analysis of massrnflow rates and calculations far from typical catalogue data (non-standard conditions) are provided. Thernmain conclusions can be summarized as: i) the EF model is recommended when the boundary conditionsrnfor the estimation and prediction modes are the same and when non-standard conditions are considered;rnii) the RC model is the chosen alternative when the mass flow rates are modified from the estimation tornthe prediction mode.