초록 ▼

A heat recuperator is disclosed having a plurality of serially connected tube sections enclosing a gas which is to be heated by exposing the tube sections to a second gas of elevated temperature. Parallel-flow and/or counter-flow sections of tube sections are provided such that the temperature of th

A heat recuperator is disclosed having a plurality of serially connected tube sections enclosing a gas which is to be heated by exposing the tube sections to a second gas of elevated temperature. Parallel-flow and/or counter-flow sections of tube sections are provided such that the temperature of the tube section does not decrease below the dew point of the second gas. A particularly significant application is in the area of Compressed Air Energy Storage (CAES) systems in which the recuperator is utilized to preheat air from a storage cavern prior to combustion.

대표청구항 ▼

A method for heating high density and low temperature compressed air in a recuperator having a plurality of exhaust gas sections, each such section having associated therewith a tube section which is sufficiently heated so as to prevent the formation of corrosive condensate thereon, comprising the s

A method for heating high density and low temperature compressed air in a recuperator having a plurality of exhaust gas sections, each such section having associated therewith a tube section which is sufficiently heated so as to prevent the formation of corrosive condensate thereon, comprising the steps of: heating said compressed air initially in a first exhaust gas section and corresponding tube section wherein said first exhaust gas section and corresponding tube section operate in a parallel-flow manner; and heating said initially heated air in a second exhaust gas section and corresponding tube section serially connected to said tube section of said first exhaust gas section, wherein said second exhaust gas section and corresponding tube section operate in a counter-flow manner; wherein said tube sections transfer heat from an exhaust gas having high temperature and low density within said recuperator to said compressed air and the temperature of surfaces of said tube sections exposed to said exhaust gas does not decrease below a dew point of said exhaust gas.