Development of a cryogenic condenser and computation of its heat transfer eflciency based on liquefaction of nitrogen gas

• Autorzy: Chowdhury Debajyoti R. , Chakraborty Nathuram , Sarkar Swapan C.

Identyfikatory

DOI

10.2478/mme-2019-0039

• Języki publikacji: EN

Abstrakty

EN

The typical cryogenic condenser described here transfers the refrigerating effect from its inner side to its outer side through the wall of the condenser. The separate close refrigeration cycle operates on Reverse Stirling Cycle using hydrogen or helium as working fluid. The nitrogen gas gets liquefied when it comes in contact with the cold outer surface of the condenser. We have successfully developed a cryogenic condenser using copper of electrolytic grade for a liquefaction duty of 10 liters of liquid nitrogen per hour. Condenser effectiveness is evaluated by assembling it in Cryogenerator model, ZIF-1002 and by noting the liquefaction rate. Both the results are satisfactory. Selection of material, fabrication, testing of the condenser developed for a Cryogenerator have been described in the paper to assess its suitability for a Cryogenerator based on Reverse Stirling cycle liquefier.

Słowa kluczowe

EN

reverse Stirling cycle; condenser; cryogenerator; heat exchanger effectiveness; liquid nitrogen

PL

odwrócony cykl Stirlinga; skraplacz; cryogenerator; wydajność wymiennika ciepła; ciekły azot

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Mechanics and Mechanical Engineering
• Rocznik: 2019
• Tom: Vol. 23, nr 1
• Strony: 291--296
• Opis fizyczny: Bibliogr. 30 poz., fot. kolor., rys.

Twórcy

autor

Chowdhury Debajyoti R.

• Centre for Rural & Cryogenic Technologies, Jadavpur University, Kolkata 700032, India

autor

Chakraborty Nathuram

• Centre for Rural & Cryogenic Technologies, Jadavpur University, Kolkata 700032, India

autor

Sarkar Swapan C.

• Centre for Rural & Cryogenic Technologies, Jadavpur University, Kolkata 700032, India

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