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DESIGN AND FABRICATION OF PULSE TUBE REFRIGERATION SYSTEM full report


Posted by: project report tiger
Created at: Thursday 04th of March 2010 03:01:33 AM
Last Edited Or Replied at :Monday 18th of October 2010 11:41:19 PM
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n phase with the pressure. In analogy with the AC electrical systems, real power flows only with current and voltage in phase with each other. Without the displacer in the Stirling cycle the mass flow leads the pressure by 90 degree and no refrigeration occurs. Though the moving piston causes both compression and expansion of the gas, net power input is required to drive the system since the pressure is high during compression process. Likewise the moving displacer reversibly extracts net work from the gas at the cold end and transmits it to the warm end where it contributes some to the compre..................[:=> Show Contents <=:]



advantages and disadvantages of pulse tube refrigeration ppt


Posted by:
Created at: Saturday 29th of September 2012 11:28:49 PM
Last Edited Or Replied at :Saturday 29th of September 2012 11:28:49 PM
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sir i want to do my seminar and it requires the advanteges and diadvanteges of pulsetube rfrigerat..................[:=> Show Contents <=:]



pulse tube refrigerator


Posted by: nathi302
Created at: Monday 06th of December 2010 08:50:38 AM
Last Edited Or Replied at :Monday 06th of December 2010 10:01:37 PM
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Thank You,,,
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CFD SIMULATION OF ORIFICE PULSE TUBE REFRIGERATOR


Posted by: project report helper
Created at: Saturday 16th of October 2010 06:35:16 AM
Last Edited Or Replied at :Saturday 16th of October 2010 06:35:16 AM
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ing under a variety of thermal boundary conditions are modeled at different frequencies. The compressor used is having dual opposed piston arrangement. The simulations are done at different frequencies with helium as working fluid. The simulated OPTR consists of a compressor (dual opposed piston), a transfer line, an after cooler, a regenerator, a pulse tube, a pair of heat exchangers for cold and hot end, an orifice valve and a reservoir. The simulation represents fully coupled systems operating in steady-periodic mode. The externally imposed boundary conditions are a cyclically moving piston..................[:=> Show Contents <=:]



HYDRO POWER PLANT presentation


Posted by: project topics
Created at: Wednesday 21st of April 2010 12:09:13 AM
Last Edited Or Replied at :Friday 15th of March 2013 05:53:57 AM
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6) Generators

Convert MECHANICAL energy in ELECTRICAL energy
7) Transformer..................[:=> Show Contents <=:]



magnetic refrigaration


Posted by: mrigendrakumar
Created at: Wednesday 31st of March 2010 07:07:33 AM
Last Edited Or Replied at :Thursday 01st of April 2010 01:56:36 AM
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Regarding Magnetic refrigeration: It is mentioned in sy..................[:=> Show Contents <=:]



DESIGN AND FABRICATION OF PULSE TUBE REFRIGERATION SYSTEM full report


Posted by: project report tiger
Created at: Thursday 04th of March 2010 03:01:33 AM
Last Edited Or Replied at :Monday 18th of October 2010 11:41:19 PM
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uring compression process. Likewise the moving displacer reversibly extracts net work from the gas at the cold end and transmits it to the warm end where it contributes some to the compression work.
1.2.2.2 Gifford-McMahon Refrigerator.
Because the pressure oscillates everywhere within the Stirling refrigerator, excess void volumes must be minimized to maintain a large pressure amplitude for a given swept volume of the piston. Thus oil removal equipment cannot be tolerated, which means that the moving piston and displacer must be oil free. In the mid 1960s Gifford and McMahon showed that pre..................[:=> Show Contents <=:]



Thermoacoustic Refrigerator


Posted by: mechanical wiki
Created at: Thursday 03rd of September 2009 12:40:07 PM
Last Edited Or Replied at :Sunday 01st of August 2010 09:05:10 PM
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ation of all these oscillations, and their interaction with solid boundaries produces a rich variety of Thermoacoustic effects. Although these effects as they occur in everyday life are too small to be noticed, one can harness extremely loud sound waves in acoustically sealed chambers to produce powerful heat engines, heat pumps and refrigerators. Whereas typical engines and refrigerators have different moving parts Thermoacoustic engines and refrigerators have almost a single flexing moving part (loud speaker) with no sliding seals.
In thermoacoustic primemovers heat flow from a high tempera..................[:=> Show Contents <=:]



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