CAJ | 학술논문

基于地源热泵单U地埋管二维换热模型，以钻孔内的换热热阻为目标函数，以回填材料导热系数、两埋管间距及管内水流速等参数为优化变量，利用添加了精英保留及迁移优化的遗传算法，对各参数同时变化时进行了目标函数优化，并分析了各参数对热阻性能影响，当回填材料导热系数、两埋管间距及流速均为最大值时，其对应的钻孔内换热热阻达到最小。研究结果对优化地埋侧换热器的设计具有一定参考价值。
기우지원열빙단U지매관이유환열모형，이찬공내적환열열조위목표함수，이회전재료도열계수、량매관간거급관내수류속등삼수위우화변량，이용첨가료정영보류급천이우화적유전산법，대각삼수동시변화시진행료목표함수우화，병분석료각삼수대열조성능영향，당회전재료도열계수、량매관간거급류속균위최대치시，기대응적찬공내환열열조체도최소。연구결과대우화지매측환열기적설계구유일정삼고개치。
Based on the two-dimensional heat transfer model for single U pipe in GSHP (Ground Source Heat Pump)system,this paper analyzed the influences of main different multi-variables on the heat resist-ance,including the heat conductivity coefficient of backfill materials,the buried pipe spacing in the bore-hole and the water velocity in the pipes.Improved Genetic Algorithm (IGA),in which elitism selection and migration were combined,was used to optimize the heat resistance in the borehole based on foregoing multi-variables.According to the optimized result,the minimum heat resistance was obtained when the heat conductivity coefficients of backfill materials,the buried pipe spacing and the water velocity in the pipes reached their maximal designed values.The results are useful for the optimization of the heat ex-changer design of GSHP.