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  1. jpolihro

    Buying a Radial Inflow Microturbine

    Thanks, I will browse through those and hopefully find a small sized one.
  2. jpolihro

    Buying a Radial Inflow Microturbine

    Hello, would someone know where could one purchase a radial inflow microturbine of diameter 1 - 2 cm All I need is a contact web address or similar of the manufacturer or seller. Many thanks
  3. jpolihro

    Advice on radial inflow turbine

    Hi racookpe1978, Power: in the order of hundreds of watts, up to a kilowatt. At Inlet: room temperature + up to 100K; pressure of 2-5atm gauge; subsonic nozzle injection. Tip speed of the rotor is subsonic, but should be capable of reaching about 300-330 m/s (50,000 rpm at 12cm diameter). Rig...
  4. jpolihro

    Advice on radial inflow turbine

    Hello All, where could one purchase a radial inflow turbine wheel and its manifold/nozzle assembly? I looked on the net but all I could find is this link. Would someone know what is the cost of such assembly for a turbine wheel with radius of 6cm (cold flow, about room temperature gas)? We...
  5. jpolihro

    How to estimate mass flux through pipe

    Hello, I am trying to estimate the mass flux (m dot) of air (ideal gas, compressible flow) through adiabatic pipe. Can this be done without involving the velocity or Mach number? Forgive my ignorance... I can get the following: inlet pressure, inlet density, pipe cross-sectional area, pipe...
  6. jpolihro

    Real-life examples of turbine outlet conditions

    I would like to thank to all who have contributed to this thread.
  7. jpolihro

    Real-life examples of turbine outlet conditions

    macmet, I certainly agree with you. My question is general... I only need to know some real-life exit conditions, so as to get a feel what is out there. Also, would like to learn about how kinetic energy is extracted from the gas just before turbine exit, because it is not straightforward, as I...
  8. jpolihro

    Real-life examples of turbine outlet conditions

    Would someone else care to venture an opinion? What is, as a matter of principle, the method of slowing down the gas at turbine exit, so that its kinetic energy is fully extracted and converted to shaft-work. While such energy extraction makes perfect engineering sense, one can wonder how it is...
  9. jpolihro

    Real-life examples of turbine outlet conditions

    If I can have the exit diameter and the RPM, I can assume the gas leaves with the blade tip velocity = omega x R. This way, one can have an estimate of the kinetic energy of the gas. Knowing the pressure at outlet gives info about the potential energy of the gas. Then one needs the flux to...
  10. jpolihro

    Real-life examples of turbine outlet conditions

    Hello, would someone be able to provide real-life example(s) of the outlet conditions for any turbine? Such as gas velocity, mass flux, pressure... I am trying to get a feel for the available energy at a turbine's exhaust. Many thanks
  11. jpolihro

    Help needed in understanding pressure vessel nameplate

    I am hoping the volume of the tank is listed on the nameplate as well...
  12. jpolihro

    Help needed in understanding pressure vessel nameplate

    Thank you, Frank1344; yes the vessel is in Ontario [smile] The volume of the vessel is of a particular interest... But unsure if it is listed in one of the numbers in the nameplate
  13. jpolihro

    Help needed in understanding pressure vessel nameplate

    Hello, Would you be able to interpret the nameplate info on this vessel? We are using an older (1960s) pressure vessel, the nameplate reads CRN. 4800.5. N.S.P. 3442. TS.55000. W.P.236.TEMP.354. SH.4375.HDS.387. UW.12.C.31.10.62. H.W.C. This is what we know: CRN is Canadian Registration...
  14. jpolihro

    Filling up voids: when mating no longer helps

    Once ready, the assembly will be run in a CFD solver and its imperfections (like the crack above) have no bearing on the main phenomenon we are simulating. But they do mess up the mesh, which I need to run the solver. Thanks to rfus for suggesting the loft between the 2 mismatched faces. I will...
  15. jpolihro

    Filling up voids: when mating no longer helps

    Wow, thank you for the so many replies. I'd like to post the assembly and am sure people will resolve the problem I have. The thing of it is - the designs do not belong to me only and I have to keep them confidential (sorry, I know this is no fun). Anyways, this work is a part of a...
  16. jpolihro

    Filling up voids: when mating no longer helps

    I tried to build a simple part file which illustrates the problem. I am trying to connect the ends of the ring. http://files.engineering.com/getfile.aspx?folder=6dbed77a-fb1f-4b8a-b1a7-d33a35adca5e&file=mismatched_ring.SLDPRT
  17. jpolihro

    Filling up voids: when mating no longer helps

    My apologies. The pictures above are of 2 solid bodies. They were already mated - a planar face on solid1 is constrained to be coincident with a planar face on solid2. This is the only constraint, but once enforced, it only allows the 2 bodies to slide parallel to the plane of the coincident...
  18. jpolihro

    Filling up voids: when mating no longer helps

    Image 5http://files.engineering.com/getfile.aspx?folder=0d729f06-1cd2-4e1d-aeed-0f2ce9737499&file=5.jpg
  19. jpolihro

    Filling up voids: when mating no longer helps

    Image 4http://files.engineering.com/getfile.aspx?folder=4e5b68a4-508e-41cf-bc3c-821c76fe3fb3&file=4.jpg
  20. jpolihro

    Filling up voids: when mating no longer helps

    Image 3http://files.engineering.com/getfile.aspx?folder=8f4b25cc-8b47-4061-b2ac-d297c93b9000&file=3.jpg

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