Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. zj4041

    Current Regulator

    Qualification Test of a Pressure Vessel Thermal side: I need to heat up just the air inside a small vessel up to 900F. The vessel will be pressurized to 350psi. (Flow is optional) It sounds simple but it has been a challange for me. My option is to deliver hot air from another source...
  2. zj4041

    Current Regulator

    I apologize for expressing my frustration. I appreciate the advice everyone has given me. Im in a company where engineering expertise & funding is scarce. I wouldnt be in this forum if it werent for this situation.
  3. zj4041

    Current Regulator

    yes but even with a pid temperature control i burnt the element. I used its own build in thermocouple for feedback. so obviously the feedback is no good other wise it wouldnt have overheated/burnt out. To prevent this from happening i am going to use a volt/percentage controller to regulate the...
  4. zj4041

    Current Regulator

    it is a resistance heater, but some how the feedback sensor caused the heater to over heat till it blew a safety fuse, and since then the heater just keeps shorting, so now i want to switch to a variable voltage transformer so that it doesnt go beyond the rated limit.
  5. zj4041

    Current Regulator

    im pretty much bypassing the temperature controller. Im planning to just use an AC Variable Voltage Output Transformer, and an ammeter to ensure I dont provide more than the rated wattage (400w) other wise the thing sucks up a bunch of power and burns out(experienced that already). hehe.
  6. zj4041

    Current Regulator

    I am trying to run a custom heater element at its max power capacity 400w. It runs on 110vac. I would like to run it at max power continuously. What can I purchase or build that will keep the voltage at 110vac but regulate the current such that I am only supplying 400w?
  7. zj4041

    Best Stainless Steel for Mirror like Surface.

    ive been using the data sheet from omega- http://www.omega.com/temperature/z/pdf/z088-089.pdf no worries, im going to calculate the emissivity based on wall temperature.
  8. zj4041

    Best Stainless Steel for Mirror like Surface.

    I am begining an experiment to see if nickel plated chromolly has lower emissivity than polished ss 321. Based on my application; I hope to find out that they are the same or nickel plated chromolly has lower emmissivity.
  9. zj4041

    Best Stainless Steel for Mirror like Surface.

    I am begining an experiment to see if nickel plated chromolly has lower emissivity than polished ss 321. Based on my application; I hope to find out that they are the same or nickel plated chromolly is better.
  10. zj4041

    Best Stainless Steel for Mirror like Surface.

    so in comparison between 321 and 304... 321 is harder so it will polish better? and both have about the same amount of chrome so they will both hold the polish the same way.. correct ? ... is it correct to say 321 will polish better then 304
  11. zj4041

    Best Stainless Steel for Mirror like Surface.

    What stainless steel is best for mirror like finish/polish? I am considering 321 316 or 321. Are they all about the same.. is does one polish better than the other? FYI: this is to reduce the emissivity/radiation HT of the surface. Thanks.

Part and Inventory Search