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Design of the Inertance Pulse Tube Refrigerator

Lavari, Mahdi | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 50705 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Soltani, Mohammad Reza; Karimi, Mohsen
  7. Abstract:
  8. Many improvements in the Inertance Pulse Tube Refrigerators (IPTR) have brought them to a place in which other Cryocoolers are gradually replaced. The Inertance Pulse Tube Refrigerators have high reliability, low operating and maintenance cost, low vibration and high efficiency due to lack of mobile components. These Cryocoolers are used in the cooling of infrared sensors, Cryosurgery applications, transportation, liquefaction of gases, and so on. The IPTR based on Stirling cycle and it uses helium gas as working fluid. Typically, a variety of compressors can be used as a driver, resulting in reduction in the lifetime of the IPTR. Thermoacoustic engines can be used to remove these compressors. Thermoacoustic engines have no moving parts, and thus increase the lifetime of the IPTR. The purpose of this Thesis is to design the optimum IPTR with 1 watt refrigeration for the thermoacoustic engine of Sharif University of Technology. To do this, the inputs for the design of the IPTR were selected by using the analytical and empirical criteria for different segments of the thermoacoustic engine. Then, the initial design of the regenerator was performed by using the data of the thermoacoustic engine and using the REGEN3.3 numerical model. Optimization and design of other IPTR components were performed by using DeltaEC numerical model. The design continued until Maximum Coefficient of Performance achieved. Finally, the dimensions of all the main components of the optimum IPTR are obtained. The results are verified using the REGEN3.3 model. The results are consistent with the two models and confirm the accuracy of the results
  9. Keywords:
  10. Inertance Tube ; Pulse Tube

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