超臨界CO_2クローズドサイクルガスタービンの開発 : 再生熱交換器の開発

概要

論文の詳細を見る
Since an optimal design point of regenerative cycle exists on the side of lower pressure ratio, heat transfer surface used in regenerative heat exchangers is requested to be those of low pressure drop type. In particular, for supercritical CO_2 gas turbine, its cycle efficiency is enhanced with the heat exchangers whose regeneration efficiency is over 0.95. Hence, the requirement of low pressure drop heat exchangers is of critical importance in the system. To this end, the microchannel heat exchanger with the advanced heat transfer surface is fabricated and tested by using supercritical CO_2 demonstration loop. The thermo-fluid correlations developed based on numerical experiments generally agree well with the test results. The heat exchangers 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
2012-11-20