Aquifer Thermal Energy Storage for the Berlin Reichstag Building - New Seat of the German Parliament

Abstract

According to the decision of the German Parliament, forwardlooking, environmentally responsible, and examplary energetic concepts were to be implemented for the supply of energy to the Parliament buildings in the Spree river curve in Berlin, focusing on the high utilisation of the primary energy. Vegetable-oil fired block type cogeneration units and the integration of one aquifer heat and cold store, respectively, are to make sure that 82 % of the electric work of the overall complex and even 90 % of the annual heat demand will be covered by power and heat cogeneration. The cold store ñ to be charged in particular with ambient winter cold ñ will cover 60 % of the cold demand in summer. Thus, the environmentbenign combustion of bio-fuel plus the operation of the cold store will result in a 60 % reduction of CO2 emission compared to conventional technical solutions. At the time of the compilation of this manuscript, the system was in the phase of commissioning.