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Recent content by xlr8shun

  1. xlr8shun

    design of a counter-flow tube-in-tube supercritical steam heat exchanger

    Direct injection could work but unfortunately I need to keep the hot and cold streams separate, plus I suspect that I might have a hard time finding an affordable direct injection controller solution in a reasonable time period. This is for an R&D application, ideally built with off the shelf...
  2. xlr8shun

    design of a counter-flow tube-in-tube supercritical steam heat exchanger

    Yes, the flow and inlet temperature is constant. I have done an energy balance based on the enthalpy differences between start and end states calculated from REFPROP. From an energy balance standpoint approximately 5 gpm of cooling water will balance the change in enthalpy of the hot stream from...
  3. xlr8shun

    design of a counter-flow tube-in-tube supercritical steam heat exchanger

    Hello, I am trying to design a tube-in-tube heat exchanger that is capable of cooling a 200 bar supercritical steam line from 500 deg C to 40 C, using building utility water as the cooling fluid in the outer tube. I would like to design the exchanger so that the cooling fluid outlet temperature...
  4. xlr8shun

    5" inconel piping connectors rated for 240 bar, 650 C

    I'm looking for piping connectors (flange or clamp style) rated for operation at 240 bar and 650C, ideally in inconel 625. I've come across some solutions from Fruedenberg (Techlok and SPO flanges) that seem like they should work however the listed temperature ratings top out at 400 C or so...

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