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  1. Jakelian

    Fan type selection

    dbill, thanks; I will try to use an axial there maybe I can create some space, and make it bigger, so, with lower speeds, I can get the same amount of air. And I will place the motor outside, just like the fans of those std ovens have. I just checked the fan Chasbean1 recommend, it seems like...
  2. Jakelian

    Fan type selection

    Compositepro and Willard3; "Why would you not use a standard blower and ducting, and then a difuser to direct air in whatever direction you desire?" Because first, I need the air in all directions, 360 degrees, so, I am trying to use the natural shape of the impeller to direct in all...
  3. Jakelian

    Fan type selection

    Compositepro, Thanks for your answer. I see now that my question is missing an important description: I have seen those, the blade looks like water mills, and has heater installed around its perimeter. They turn the air around. The difference is, I have to transfer the air from one room to...
  4. Jakelian

    Fan type selection

    Hi, For a cooking product I am designing, I need a centrifugal fan which will take in the air from its central inlet as usual, and blow it not thru a single direction via its exterior case's opening but to all directions, in other words, 360 degrees. Is it possible? It is clean air, pressure...
  5. Jakelian

    Low thermal expansion board material

    RPStress, Thank you very much for your attention and effort. I am reviewing the info you sent me, Thanks a lot )) Jakelian
  6. Jakelian

    Low thermal expansion board material

    Hi, I am looking for a material in solid sheet (or solid board) form: - Thickness: Between 1/4 and 1/2 inches, - Continious working temperature: 180F, no outgassing at this temperature - Water proof, no or very low absorbance of water, - Machineable with std tools, - Accepts/adheres with...
  7. Jakelian

    Electrically non-conductive but thermally highly conductive material

    Ceramicguy, Thank you very much for your attention, I solved the problem by using some polyester foil, it was easier than I thought, Thanks a lot anyway for your attention, regards, Jakelian
  8. Jakelian

    Electrically non-conductive but thermally highly conductive material

    arbreen, Thank you very much for your attention, Good thinking, but, about aluminium and copper: Absolutely no metals around.. So, cant use them; they cause other problems.. Thanks anyway for the thought anyway. ceramic block, yes, i am searching that one...)) thanks.. J
  9. Jakelian

    Electrically non-conductive but thermally highly conductive material

    IRStuff, Thanks, I checked your link, empty page comes up. Then I went their home page and searched. I found several options, one of them is...
  10. Jakelian

    Electrically non-conductive but thermally highly conductive material

    Moltenmetal, Thank you for correcting me, yes, now I found alumina with 29W/mK, far superior to those pads (star). Can you think of any US manufacturer who provides it in sheet form? Oh pls dont bother, I am cheking with ThomasReg, Thanks a lot)
  11. Jakelian

    Electrically non-conductive but thermally highly conductive material

    Thanks; IRStuff: Only requirements I can think of at this stage (and with my knowledge) are, max temperature; 180F, thickness; upto 1/2 inches. Values about electrical or thermal insulation? I dont feel like I have that info or the luxury to ask those at this moment. I mean, if I find...
  12. Jakelian

    Electrically non-conductive but thermally highly conductive material

    I am looking for a material which is electrically non-conductive but thermally highly conductive. Need the material in sheet form, like a gasket, any thickness between 1/4 inch and 1/2 inch would be perfect, Doesnt have to be flexible, bendable etc, can be either soft or very solid, Wont...
  13. Jakelian

    Electrically non-conductive but thermally highly conductive material

    I am looking for a material which is electrically non-conductive but thermally highly conductive. Need the material in sheet form, like a gasket, any thickness between 1/4 inch and 1/2 inch would be perfect, Doesnt have to be flexible, bendable etc, can be either soft or very solid, Wont...
  14. Jakelian

    Temperature rise as K? & ANSI/UL 875

    Dear Noway2 and DRWeig, Thanks for the replies. Appriciate them. I asked the same questions in another forum of Engtips and caused a mess! If you want to read it, here it is: http://www.eng-tips.com/viewthread.cfm?qid=251549&page=1 But please do not reply, I am glad it finished, since it was...
  15. Jakelian

    Temperature rise as K?

    Yes Wolf39, I am still around and reading the discussion... I am just a designer for my own project and all those heavy techical arguments do not help me too much. I was just looking for a simple answer, what is the max temp allowed as C? Therefore, I am basing my decision on the...
  16. Jakelian

    Temperature rise as K?

    Dear bashar2008, burnt2x, and GTstartup Thanks a lot for all the valuable effort and data. Best regards...
  17. Jakelian

    Temperature rise as K? & ANSI/UL 875

    Dear FRENCHCAD, Thanks a lot for your time and answer, see, I am not an engineer, but involved in the design of the product. I need to simplify the item; I need to know the max allowed temp on that part. so, In this case, if max temp rise allowed on the body part is 140 K, can I take it like...
  18. Jakelian

    Temperature rise as K?

    ... and here is the second table from EN60335-1, attached...http://files.engineering.com/getfile.aspx?folder=e9f581b1-ead4-4bc5-b5a8-01e079fa1604&file=Table-3-first_part.jpg
  19. Jakelian

    Temperature rise as K?

    ... and here is the jpeg from EN60335-1 !http://files.engineering.com/getfile.aspx?folder=b7e0bdc2-4f11-4f99-b848-a0aeabf81daa&file=Table-3-first_part.jpg
  20. Jakelian

    Temperature rise as K?

    Dear Users! Thanks a lot for all the attention! Anyway, I am attaching 2 jpegs; first one is from CSA. Then I will post onother message with the jpeg from EN60335-1. It is very easy to find the answer in CSA's doc: Item 1 says: "At any point on or within a supply terminal box, the max temp is...

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