冷凍サイクルに適用される二相流エジェクタの流動特性

概要

論文の詳細を見る
The dissipated effective kinetic energy in the refrigeration cycle can be recovered by using a two phase ejector. The performance of the two phase ejector depends on the mixing characteristics of the droplets with the large inertia and the relatively light gas. It is important for designing the two phase ejector to know characteristics of the two phase flows in it. In this study, two-dimensional differential equations in the mixing section and the diffuser of a two phase ejector are solved numerically. The calculated energy conversion efficiency which is used to evaluate the performance of the ejectors is in good agreement with experimental one using a refrigerant R134a. The effciency obtained by the present experimental study is about 35% which is lower than that for the single phase ejector. But, this efficiency would be increased by the development of the nozzle.
1998-09-25