منابع مشابه
Evaluation of Composite Vane Materials for Rotary Sliding Vane Compressors
The physical performance characteristics of composite materials used for vanes in rotary, sliding-vane compressors, in general, are several orders of magnitude more difficult to quantify for design purposes than most homogeneous materials. This arises from the numerous variables that influence the response of these materials under the severe environmental conditions existing in such compressors...
متن کاملVane Dynamics Analysis of a Tilted Vane Rotary Compressor
An analytical model of vane dynamics in a tilted vane rotary compressor is presented. With the geometric relationship of the vane in a tilted slot, and the roller, the kinetic equations were derived for evaluating the reciprocating inertial force of the vane, and the chamber volume equations were obtained for calculating pressure history inside the compression chamber. The empirical friction co...
متن کاملstudents perception of computerized toefl test
تحقیق حاضر به بررسی درک دانشجویان از مزایا و معایب آزمون های کامپیوتری تافل و تاثیر جنسیت بر درک آنها پرداخته است. شرکت کنندگان در این تحقیق 100 نفرزبان آموز مرد و زن بودند که در آزمون کامپیوتری تافل در ایران شرکت کرده بودند. پرسشنامه یی که در مورد مزایا و معایب آزمون های کامپیوتری در مقایسه با آزمون های کاغذی توسط محقق تهیه شده بود جهت تکمیل به این افراد ارایه شد. داده های بدست آمده در این مطا...
15 صفحه اولVane Behavior in Vane Compressors Under Start-up Operation
Vane oompressors can not maintain contact between a vane tip and a cylinder wall under start-up operation since backpressure acting on the vane is not sufficient. We theoretically analyzed transient behavior of the vane under the start-up operation by taking account of changes of the backpressure and discharge pressure after compression starting. The validity of the theoretical analysis was con...
متن کاملEstimating of geotechnical properties of clay soil with dynamic cone penetration (DCP) test
Dynamic cone penetration (DCP) test is used more in pavement design and construction, and less for subsurface geotechnical investigation and clay core dam. In the present article, evaluating geotechnical parameters of Sanandaj’s clay in the western region of Iran using the DCP test was taken into account. Accordingly, 6 trial pits with maximum depths of 15 m were excavated manually in various s...
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ژورنال
عنوان ژورنال: Journal of the Japanese Society of Snow and Ice
سال: 1980
ISSN: 0373-1006,1883-6267
DOI: 10.5331/seppyo.42.25