Characterization of the performance for water-to-water and air-to-water heat pumps: Development of simple and compact polynomial correlations

Abstract

Nowadays, the development of models is one of the most common problems in many research studies. In the field of refrigeration and heating, researchers increasingly require compact models with a reduced computational time. These models must be able to predict the performance of heat pumps and chillers with reasonable accuracy. This paper describe the development of simple and compact polynomial models for the performance characterization in these machines. To this end, this study consists of two main parts: Obtaining the polynomial models and then its final adjustment with experimental data. The unit selected for this study, is an innovative prototype of reversible dual source heat pump, with aerothermal and geothermal heat sources working with R32 as refrigerant. This has enabled us to analyze the response surface for the performance of the two main heat pump technologies: water-to-water and air-to-water heat pumps.