SYSTEM FOR STORING AND OUTPUTTING THERMAL ENERGY HAVING A HEAT ACCUMULATOR AND A COLD ACCUMULATOR AND METHO FOR THE OPERATION THEREOF
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United States of America Patent
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Issued Date -
May 21, 2015
app pub date -
Mar 27, 2013
filing date -
Apr 17, 2012
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Abstract
A system for storing and outputting thermal energy and a method for operating the system are provided. The system has a heat accumulator and a cold accumulator. The heat accumulator and the cold accumulator are discharged in two separate discharging circuits, wherein the thermal energy is converted into electrical energy, for example by a generator. The residual heat from the process in the circuit can be advantageously fed to the process in the circuit by a first heat exchanger, whereby the total efficiency is advantageously improved. Furthermore, the heat from the heat accumulator can be advantageously transferred into the first circuit by a waste-heat steam generator. The heat accumulator and the cold accumulator can be charged, for example, with excess energy from the electric network by a motor. Excess energy reserves of alternative energy resources, for example, can thus be stored.
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