Design of High Frequency Pulse Tube Cryocooler for Onboard Space Applications

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Srikanth, Thota^1 ; Padmanabhan^1 ; Gurudath, C.S.^1 ; Amrit, A.^1 ; Basavaraj, S.^1 ; Dinesh, K.^1

Department of Space, Govt of India, ISRO Satellite Centre, Bengaluru, India^1

关键词: Coefficient of Performance;    High frequency HF;    High frequency operation;    High frequency pulse tube cryocooler;    Operating frequency;    Operational constraints;    Pulse tube cryocoolers;    System-level modelling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012081/pdf
DOI  :  10.1088/1757-899X/171/1/012081

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

To meet the growing demands of on-board applications such as cooling meteorological payloads and the satellite operational constraints like power, lower mass, reduced size and redundancy; a Pulse Tube Cryocooler (PTC) is designed by arriving at an operating frequency of 100 Hz and Helium gas pressure of 35 bar based on insights obtained from combination of phasor diagram, pulse tube and regenerator geometries with overall system mass of ≤ 2.0 kg. High frequency operation would allow reducing the size and mass of pressure wave modulator for a given input power. High Frequency also helps in reducing the volume of regenerator for a given cooling power, which increases the power density and leads to faster cool down. A component level modelling of the regenerator for optimising length and diameter for maximum Coefficient of Performance (COP) is carried out using REGEN3.3. The overall system level modelling of PTC is carried out using 1-D software SAGE. The cold end mass flow rate of the optimised regenerator is taken as reference for the system modelling. The performance achieved in REGEN3.3 is 2.15 W of net heat lift against the performance of 1.02 W of net heat lift at 80 K in SAGE.