STORING ENERGY USING A THERMAL STORAGE UNIT AND AN AIR TURBINE
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United States of America Patent
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Aug 18, 2016
app pub date -
Oct 13, 2014
filing date -
Oct 14, 2013
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Abstract
The invention relates to a method for storing energy by converting the energy into thermal energy and then generating power by means of a gas turbine set with a compressor (1), an expander (6) and a power generator (8), comprising at least one (3) and a second (4) low-temperature storage unit, where the electric energy is stored only in form of high-temperature heat (above the turbine outlet temperature TOT) in a thermal storage unit (5). Depending on the requirements, a compressed gas from the compressor (1) is heated to a temperature approximating the turbine outlet temperature TOT in a low-temperature storage unit (3, 4) and then heated to a temperature level of at least turbine inlet temperature TIT in a high-temperature storage unit (5) using stored heat from electric energy and supplied to a gas turbine (6) in order to generate power.
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