R05-(1) カーエアコン蒸発器における管内伝熱促進技術

概要

論文の詳細を見る
High heat exchanger performance in Car air conditioners is very important to comfortable living and energy saving. We studied the refrigerant heat transfer enhancement in a car heat exchanger with projections (dimples) on its inner walls. Experimental and analytical results showed that elliptical dimple is optimum in heat transfer coefficient in for all types of dimple. Heat transfer coefficient of tubes with elliptical dimples is as twice that of a conventional tube with inner fins. For a evaporator tube with dimples, heat transfer maintained the same compared to a current evaporator with inner fined tubes however a weight to the evaporator with dimple was 10% less than current one.
一般社団法人日本機械学会の論文
2000-07-31