18 May 2017
Since 1998, EDF R & D provides energy monitoring of an office building (S = 16633m2) in Lyon and is heating and cooling by a thermo-frigo-pump on groundwater. In 2014, it was decided to renovate the production of hot and cold and replace: -The Existing thermo-frigo-pumps (with piston compressors) by new machines with variable speed compressors. -All the water pumps with new variable speed pumps The measures realized in the year 2014, have shown that -The building consumption was reduced by 30% -The consumption of water pumps 41% -The consumption of thermo-frigo-pump decreased near of 50% and the COP heating + cooling (*) increased by 68%!. – All of these improvements led to a reduction in CO2 emissions of 37% (of the building).