Notices
Results 1 to 3 of 3

Thread: Need Help with a Project

  1. #1 Need Help with a Project 
    New Member
    Join Date
    Feb 2018
    Posts
    2
    So I'm currently in works of making a popcorn maker for a school project and I need help with choosing the correct equipment for power delivery.

    I'm going to be using a 1000W 12V NiCd battery to power a heating element, and I wanted to know if the battery below would able to heat the burner to at least 170C, I also want to know what gauge wire I should use to connect the heating element and battery. I was thinking 2AWG cuz at max load the battery outputs 83Amps.

    Specs of Battery:
    1000W 12V 9Ah

    Specs of Surface Heating element:
    6" 4turns
    1500w

    Thanks in advance!


    Reply With Quote  
     

  2.  
     

  3. #2  
    New Member
    Join Date
    Feb 2018
    Posts
    2
    aww it wont let me post the links to the equipment


    Reply With Quote  
     

  4. #3  
    Forum Professor Zwolver's Avatar
    Join Date
    May 2006
    Location
    Netherlands
    Posts
    1,666
    Hi Mojojojo

    Just some hints and a piece of advice.

    Make sure you stay near the location, have a digital thermometer in the tray, and try doing it near a window or outside. And just test it. See what happens. You can calculate all you want, but for this, it really depends on the heat transfer coefficient. the heating surface, and the insulation you build around it.

    Otherwise look at the following.

    1000w = 1000j/s

    1000j/s --> say heating 500 grams worth of insulation/metal/popcorn

    I assume 100% efficiency and no energy or heat loss. Materials are all Iron.

    0.45 Kj/kg/kelvin.. 0.23 kj/500g/kelvin --> 4.4K/sec --> 34.1 sec it would take.. with 500 grams, heating it from 20 to 170K.

    Now you need to know how much energy is lost at which temperature difference...

    You have heat conductivity, and heat radiation. Ignore the radiation ,because it wouldn't reach anywhere near the 1000 watts.
    for black body radiation. I assume you lose about 5 - 10% (high estimation)

    Continue with 90% of the power on to conductivity. Around 170 it is 0.035W/m2*K. Say total area is 0.1M2.

    But to be honest, i have no idea how to calculate the total loss of the energy. I only see formulas that go with a certain thickness of material.
    Growing up, i marveled at star-trek's science, and ignored the perfect society. Now, i try to ignore their science, and marvel at the society.

    Imagine, being able to create matter out of thin air, and not coming up with using drones for boarding hostile ships. Or using drones to defend your own ship. Heck, using drones to block energy attacks, counterattack or for surveillance. Unless, of course, they are nano-machines in your blood, which is a billion times more complex..
    Reply With Quote  
     

Similar Threads

  1. I need help for a project
    By Scienceman22 in forum Physics
    Replies: 0
    Last Post: November 8th, 2017, 10:28 PM
  2. my project
    By ganesh in forum General Discussion
    Replies: 1
    Last Post: December 17th, 2012, 07:20 AM
  3. help with a project
    By csneophyte in forum Computer Science
    Replies: 0
    Last Post: March 5th, 2010, 06:59 AM
  4. Project help?
    By Silvershadow118 in forum Physics
    Replies: 3
    Last Post: November 2nd, 2009, 09:50 PM
  5. project
    By abdur in forum Mechanical, Structural and Chemical Engineering
    Replies: 4
    Last Post: May 10th, 2008, 08:40 AM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •