C-9 超臨界CO_2クローズドサイクルガスタービンの開発 : 第三報再生熱交換器の開発(システム・開発,一般講演)

概要

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Since an optimal design point of regenerative cycle exists on the side of lower pressure ratio, heat transfer surface used in regenerative heat exchangers are requested to have those of low pressure difference type. In particular, for supercritical CO_2 gas turbine its cycle efficiency becomes enhanced with regeneration efficiency over 0.95. Hence, the requirement of low pressure drop heat exchangers is of critical importance in the system. To this end microchannel heat exchanger with bran new heat transfer surface is fabricated and tested using supercritical CO_2 demonstration loop. Experiments show that thermo-fluid correlations developed based on numerical experiments generally agree well with experiments. Regenerative heat exchangers tested demonstrated regenerative efficiency over 0.98 under design temperature and pressure operating conditions.
公益社団法人日本ガスタービン学会の論文
2011-07-06