Abstract
Study on Pressure Loss of Inlet and Exhaust Flow in Single Screw Expander With Large Internal Volume Ratio
Highlights
The maximum internal volume ratio of single screw expander can reach 26.5
Compared with the semi-empirical model set up in reference [5], and mathematic model established in reference [6], the model established in this paper was more accurate
Optimal shaft efficiency ηs,opt was adopted in this paper, and εv,opt was used for representing the optimal internal volume ratio corresponding to ηs,opt . it can be seen that εv,opt was only about 5.50 when evaporation reach 423 K
Summary
The maximum internal volume ratio of single screw expander can reach 26.5. In order to study the key factors that affect the performance of single screw expander with large internal volume ratio. This paper established a new thermodynamic model (internal volume ratio from 3 to 8) of single screw expander that concerned intake throttling, leakage, heat-transfer and friction loss.
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