That's right! Krimelte has come back for a second round. It is difficult for users of Krimelte's products to extrude foam in cold conditions, the sort you would expect in Northern Europe. Your mission, if you choose to accept it, is to devise a heating system that can heat up the foam as it is extruded.
The sealant is made of a prepolymer polyurethane and a liquified aerosol that expands when extruded and hardens upon contact with air moisture. The cooler the ambient temperature, the slow the foaming process and the less effective is the final seal. So Krimelte wants you to develop a heating system to raise the compound from 0 C to 20 C as it is being extruded. A few things to remember. The heat capacity of the sealant is 1700 J/(kg•K). The device must be made from commonly found electrical parts (please refer to the brand in your description) and uses 220 AC (North Americans note! Krimelte is a European company and uses 220V, not 120V).
Our last challenge was pretty damn good. But it is very important that you read the instructions. Last challenge there were a few designs that weren't even close to what Krimelte was looking for. If other users see a design that really doesn't belong in the challenge, or missing something important, leave a friendly reminder. If you have any questions, please ask them on the comments and Krimelte or GrabCAD will respond as soon as possible.
