This is a working machine already.
There are 4 elements per die.
4 dies per machine.
4 x 11 = 44kW.
Right now i'm not concerned about the energy calculations and whether E in = E out because the machine works fine so the energy balances out.
What i'm working on now is how to minimize the...
The machine produces 70kg of product per hour. The energy loss because of wet pulp being added is 3.2kWh/kg of product. We want to keep the temperature within 1 degree. So 199-201
Guys, forget about the energy required and all that jazz. I've solved that problem. To give more clarity, this is a pulp molding machine. For example, the cup holders from McDonalds are made using this machine. So the current problem is this. We can get the temperature to 200 degrees with no...
Thank you all for your input, it has been greatly appreciated. Now, having sorted out the above mentioned issues, picture the block of aluminium as two seperate blocks of aluminium with some heating element in between them. The top bit of aluminium is 100mm high and the one below the element is...
IRstuff
Thanx for the reply. The process where this happens is a thermo-forming process so the time frame we are talking about is seconds...not minutes or hours.
The heating elements reach their max temp relatively instantaneously. The block is insulated at the bottom and around the sides so...
LittleInch
Thanx for the reply. I calculated the required energy and rate without using the information about the heating elements. So now im in the process of recalculating what is ACTUALLY going to happen. Also, some extra information, the heating elements have a max temp of 600 degrees...
What i have seen is that if i were to plot the graph of the change in temperature against the height, then it comes out as a straight line. But thermal conductivity for aluminium increases with an increase in temperature.
My problem is as follows.
There is a plate of aluminium (500mm x 480mm x 100mm) that needs to be heated. The top surface of this plate needs to be heated to 200 degrees Celsius through the use of 4 (d-16 L-500mm 2.75kW) heating elements placed a the bottom of the plate. What i would like to know...
