Exergetic optimization of absorption chillers – A case study

Abstract

The best way to meet the European Union's energy awareness goals is to use a heat pump/refrigerator that requires renewable energy or waste heat to operate. Absorption machines are often powered by renewable energy or waste heat. This article, it was examined how absorption chillers can be optimized for cooling. This requires increasing the minima of the cooling exergy efficiency of absorption chillers. The effects of this increase on the quantitative and qualitative indicators were also examined. For this purpose, these indicators are described using secondary indicators instead of the basic data. This can simplify the identification of intervention points to increase the qualitative and quantitative indicators. Taking these effects into account, it was concluded that the three best choices for creating a cooling optimization are to change either the generator temperature only, the generator and condensation temperatures, the condensation temperatures only respectively. This article, it is introduced new qualitative indicators. Due could help better characterization of absorption chillers and can form the basis for further developments.

Keywords

• Absorption chiller
• Exergetic optimization
• Quantitative and qualitative indicators