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  1. vof1966

    Low absorptivity, high temp paint

    Considering all aspects, we are working on three lines at the same time. First, some modifications on the mechanical design. The final shape is going to be rather odd, but the width of the end plates will be reduced so that they will be better cooled. Considering stainless steel with an...
  2. vof1966

    Low absorptivity, high temp paint

    Frankly, I'm afraid our budget could not afford a rhodium plating. These zones are 5 m x 0.017 m. Presently we are thinking on using stainless steel instead of A-387-91 for all the side membranes. Starting from an absorptivity coefficient of 0.4 (machine rolled), the first problem is to state...
  3. vof1966

    Low absorptivity, high temp paint

    Well guessed, yes it is for a solar receiver. In this case, added to the problem of low absortion required on some small non-cooled surfaces we probably cannot rely on any paint, as these surfaces may be scratched by other parts' expansions. If we could state a reliable value for A-387-91...
  4. vof1966

    Low absorptivity, high temp paint

    Substrate materials are steels A-283-B and A-387-91. We are trying to reduce concentrated sunlight absorption on non-cooled surface edges. Air will be only at 60ºC, it is the steel that can reach 600-700ºC due to radiation. Tubes are going to be painted black with Pyromark, but there are some...
  5. vof1966

    Low absorptivity, high temp paint

    I would appreciate any suggestion about a commercial paint having low absorptivity (less than 0.3), high emmisivity (if possible) and being able to be used for an application at about 700ºC. Many thanks in advance. Best regards. Vicente Olmos
  6. vof1966

    Steam injectors

    Yes, I tried with Spirax, but no answer. I am going to try with the others. Many thanks.
  7. vof1966

    Steam injectors

    Thanks anyway, but I am looking for steam injectors and this link seems rather to be related to steam ejectors.
  8. vof1966

    Steam injectors

    For a special plant we need to use 45-bar steam to warm up a steam drum and to charge steam accumulators. It seems to exist some problem to find steam injectors for such pressure (SpiraxSarco catalogue ends at 17 bar). Do you know who could supply such equipment?. Regards and TIA.
  9. vof1966

    Steel for high temperature with saturated water

    Hello, We are in the process of choosing a right steel for a singular application. Really, it wouldn't be special (it is just producing saturated steam at 60 bar inside tubes) but in this case we have to deal with very high metal temperatures (about 600ºC = 1100 ºF). The responsible of these...

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