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Ranque - Hilsh vortex tube
Bábor, Lukáš ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Ranque-Hilsh vortex tube is a device that converts high pressure gas flow into two low pressure flows with higher and lower temperature, than a temperature of the inlet flow. Technically, it is a device of very simple construction, which is characterised by low initial costs, high endurance, durability and low maintenance. Its main disadvantage is low coefficient of performance, compared to conventional heat pumps at room temperature. In the first section of this paper, examples of applications where utilization of Ranque-Hilsh vortex tube is advantageous are given. Afterwards, several theoretical concepts of refrigeration cycles utilizing vortex tube to lower energy consumption are described. The final section of this thesis introduces new geometry of inlet nozzles for improving coefficient of performance of vortex tube. This geometry is then compared to straight tangential nozzles of circular cross-section. During the measurements, surface temperature of the vortex tube with respect to its length is monitored.
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Ranque - Hilsh vortex tube
Bábor, Lukáš ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Ranque-Hilsh vortex tube is a device that converts high pressure gas flow into two low pressure flows with higher and lower temperature, than a temperature of the inlet flow. Technically, it is a device of very simple construction, which is characterised by low initial costs, high endurance, durability and low maintenance. Its main disadvantage is low coefficient of performance, compared to conventional heat pumps at room temperature. In the first section of this paper, examples of applications where utilization of Ranque-Hilsh vortex tube is advantageous are given. Afterwards, several theoretical concepts of refrigeration cycles utilizing vortex tube to lower energy consumption are described. The final section of this thesis introduces new geometry of inlet nozzles for improving coefficient of performance of vortex tube. This geometry is then compared to straight tangential nozzles of circular cross-section. During the measurements, surface temperature of the vortex tube with respect to its length is monitored.
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