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- Title
Numerical investigation of the energy separation effect and flow mechanism inside convergent, straight, and divergent double‐sleeve RHVT.
- Authors
Bazgir, Adib; Heydari, Ali; Bazooyar, Bahamin; Mohammadniakan, Milad; Nabhani, Nader
- Abstract
This study provides analysis of a cooled Ranque–Hilsch vortex tube (RHVT) with various specifications. It shows how cooling influences energy conversion inside the RHVT and improves performance of the device in separation of hot gas from the cold stream within the fluid by presenting the temperature detachment (the temperature diminution of cold air (ΔTc = Ti − Tc), isentropic efficiency (ηis), and coefficient of performance (COP) of divergent, convergent, and straight VTs. Two key parameters including hot tube length and number of nozzles for cooling and insulated cases are investigated to find out how the performance of the VT is affected by different geometry configurations under cooling conditions. These influences were researched for straight, convergent, and divergent VT separators under different flow characteristics. The optimum geometrical conditions for the cooling cases were identified. Results are indicative of positive influence of cooling for energy separation inside a VT. The quantities of ΔTc, ηis, and COP for the cooled RHVT are greater than uncooled RHVT for various types of VTs. Cooling the VTs leads to an increase of 12.5% in ΔTc, 14.4% in ηis, and 15.1% in COP when the base case was an uncooled VT.
- Subjects
FLOW separation; VORTEX tubes; SEPARATION of gases; CONFIGURATIONS (Geometry); ENERGY conversion; COLD (Temperature)
- Publication
Heat Transfer, 2020, Vol 49, Issue 1, p533
- ISSN
2688-4534
- Publication type
Article
- DOI
10.1002/htj.21626