熱回路緒法による空気調和用熱交搎器性能の予測（蒸発器の能力に対する飈量不均－と冷媒パスパターンの影響）

摘要

空調機の高性能化のため，熱交換器の高精度な能力rn予測は重要である．著者らはこれまでに熱回路網法をrnベースとして冷媒の相変化状態を予測できる手法を開rn発しその精度を検証するとともに，熱交換器を凝縮器rnとして用ぃた場合に問題となるフィン内熱伝導の影響rnを定量化した(1)～（3）.%This paper presents an influence of air flow unbalance on performance of an evaporator and an effect of refrigerant flow path pattern. To estimate the influence, we applied thermal network method that can take refrigerant quality distribution in the heat exchanger into account. The prediction shows that performance of the evaporator falls by 6% with 40% of unbalance of air flow rate for a simple 2 rows and 2 paths heat exchanger. Also, the prediction shows that the performance will be recovered to the level when air flow distribution is uniform by optimizing refrigerant flow path pattern.