Experimental characterization of an innovative refrigeration system coupled with Linde-Hampson cycle and auto-cascade cycle for multi-stage refrigeration temperature applications

Yanbin Qin, Nanxi Li, Hua Zhang, Binhui Jin and Baolin Liu

Energy, 2022, vol. 240, issue C

Abstract: In this study, a dual mixed-refrigerants refrigeration system coupled with a Linde-Hampson refrigeration (LHR) cycle and a three-stage auto-cascade refrigeration (ACR) cycle was designed and built. The thermodynamic performance of the coupled system was experimentally investigated using low GWP zeotropic mixtures of R1234yf/R32 for the LHR and R170/R14/R50 for the ACR. The experimental results show that when the average ambient temperature was 24.18 °C, it took about 0.5 h for the prototype to reach a no-load temperature level of −120 °C, and 4 h to −146.97 °C, which was quite close to steady state. The corresponding cooling capacity, coefficient of performance (COP) and relative Carnot efficiency were 182.94 W, 0.121 and 16.0%, respectively. The hot fluid outlet temperatures in the condensation evaporator-I (CE-I), CE-II and CE-III were −49.04 °C, −87.12 °C and −113.20 °C, respectively. In addition, the discharge pressure, evaporation temperature and cooling capacity increased slightly with increasing ambient temperature, while the suction pressure and COP remained nearly constant. The LHR-ACR system manifests a promising perspective as a new cooling approach to produce multi-temperatures ranging from −40 °C to −150 °C in the energy cascade utilization fields, such as the multi-temperature cryopreservation and gas liquefaction.

Keywords: Linde-Hampson; Auto-cascade; Multi-temperature; Low-GWP; Thermodynamics (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:240:y:2022:i:c:s036054422102747x

DOI: 10.1016/j.energy.2021.122498

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