Pumps Energy Consumption Based on New EU Legislation

The presented case study compares the energy consumption of four different circulation pumps, out of which two meet the new efficiency requirements. To analyze the influence of the new energy efficiency index (EEI) and options to reduce energy consumption and carbon dioxide (CO2) emission on the operating conditions and the performance of the pump in a circulator system, a thermal test model was constructed. Several simulation tests with different pumps and varying fluid temperature and flow parameters were conducted. The paper analyzes Estonia's electricity production and options for reduced CO2 emission that can be achieved by the change of circulation pumps in domestic household systems.