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The vortex tube was discovered in 1930 by Georges Ranque, a French physics student, was experimenting with a vortex-type pump he had developed when he noticed warm air exhausting from one end, and cold air from the other. Ranque soon forgot about his pump and started a small firm to exploit the commercial potential for this strange device that produced hot and cold air with no moving parts. However, it soon failed and the vortex tube slipped into obscurity until 1945whenRudolphHilsch, a German physicist, published a widely read scientific paper ....etc

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DESIGN AND FABRICATION OF PULSE TUBE REFRIGERATION SYSTEM

ABSTRACT
Cooling effect at one end of a hollow tube with a pulsating pressure in the inside gas, was first observed by Gifford and Longsworth in early sixties. This marks the inception of one of the most promising cryogenic refrigerators known as 'pulse tube refrigerator' (PTR). Cryogenics is the science of low temperature. Cryogenics refers to the entire phenomenon occurring below -150 C or 123K. Cryogenic engineering involves the design and development of system ....etc

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ABSTRACT

Vortex refrigeration is a highly sophisticated system that contains a vortex tube which due to centrifugal force expels the internal energy of the air while the air at the centre core is made cooler. In this type of system the effectiveness is too low but considering its small size this can t be ruled off. This is used as personal cooling system in suits that are designed to withstand heat.


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CHAPTER -I
INTRODUCTION
1.1 Refrigeration
*Refrigeration is the ....etc

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Abstract--
The importance of refrigeration i s fundamental in meeting the United Nations Millennium development goals, particularly for t h e millions of the world s poor living in the t r o p i c s . dissigno set out determine the physically v i a b i l i t y to produce sufficient refrigeration to make ice from a Ranque-Hilsch Vortex tube. The base o b j e c t i v e s were, 1 kg of ice produced per work cycle, cost l e s s than $500 installed, minimal moving parts, only use renewable energy, & limit impact to t h e environment. The m ....etc

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sir i want to do my seminar and it requires the advanteges and diadvanteges of pulsetube rfrigerator.. ....etc

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