Joule Thomson (JT) Cryocooler is a well-known technology which is widely used in research and industry. The cooling effect is achieved by isenthalpic expansion of the cooling gas in an orifice. A JT cooler has two basic components: a counter flow heat exchanger and an orifice. Due to the fact that the cooler has no moving parts and contains relatively simple components it is a great candidate for miniaturization, and realization with the new additive manufacturing technologies. In the current work we discuss the implementation of 3D ceramic printing as a possible fabrication technology for a JT cooler intended for cooling IR detectors operated at temperature of about 150K. In this paper we present a comprehensive analysis including coolant considerations, heat transfer calculations and realization of the cooler.
A. Shapiro, L. Fraiman, and A. Parahovnik, "Ceramic 3D printed Joule Thomson mini cryocooler intended for HOT IR detectors," Proc. SPIE 10180, Tri-Technology Device Refrigeration (TTDR) II, 1018006 (Presented at SPIE Defense + Security: April 11, 2017; Published: 5 May 2017); https://doi.org/10.1117/12.2266313.
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