| Design of Turboexpander for Cryogenic Applications (2005) | |||||||||||||
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| Published Indian Journal Cryogenics Vol Special Issue Archived with Dspace NITR http dspace nitrkl dspace DESIGN TURBOEXPANDER FOR CRYOGENIC APPLICATIONS Subrata Ghosh Seshaiah Sahoo Sarangi Department Mechanical Engineering NIT Rourkela Orissa Corresponding author mail subratarec yahoo The indigenous design and development turboexpander have been started NIT Rourkela This paper briefly discuses the design methodology and the fabrication drawings for the whole system which includes the turbine wheel nozzle diffuser shaft brake compressor two types bearing and appropriate housing With this method possible design turboexpander for any other fluid since the fluid properties are properly taken care the relevant equations the design procedure Nomenclature blade height absolute velocity mean radial clearance chord length nozzle specific diameter diameter feed hole orifice diameter bearing enthalpy hbg bearing clearance Kbg bearing radial stiffness axial length the journal bearing mass flow rate specific speed rotational speed rev min number holes the bearing pressure power produced volumetric flow rate radius journal feed hole pitch circle radius thrust bearing outer radius thrust bearing inner radius thrust bearing turbine inlet temperature thickness blades circumferential velocity load capacity bearing width flow passage number blades Greek symbols rotational speed rad ratio tip diameter turbine wheel diameter eccentricity ratio the bearing ratio hub diameter tip diameter isentro. The indigenous design and development of turboexpander have been started at NIT, Rourkela. This paper briefly discuses the design methodology and the fabrication drawings for the whole system, which includes the turbine wheel, nozzle, diffuser, shaft, brake compressor, two types of bearing, and appropriate housing. With this method, it is possible to design a turboexpander for any other fluid since the fluid properties are properly taken care of in the relevant equations of the design procedure. | |||||||||||||
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