Pumped thermal and energy storage system units with pumped thermal system and energy storage system subunits
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United States of America Patent
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Oct 1, 2019
Grant Date -
Jun 8, 2017
app pub date -
Feb 23, 2017
filing date -
Sep 27, 2012
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Abstract
An example method may comprise providing a composite pumped thermal system having a plurality of subunits, each configured for operation in a thermal storage mode and a power generation mode; operating the system in power output mode with a power output level at an intermediate output level between 0% and 100% of a maximum output level of the system; reducing the power output level to 0% of the maximum output level by reducing a power output of a first subunit operating in a power generation mode; and at 0% of the maximum output level, wherein a power input level of the system is also at 0% of a maximum input level of the system, increasing the power input level to an intermediate input level between 0% and 100% of the maximum input level by increasing a power input of a second subunit operating in a thermal storage mode.
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