I AM dESPERATE!!!!!!!!!!!!!!!!!!!?

Question

IM in seventh grade and i need help on a couple of things for a science fair project. my project is to keep soup at the same temperature when i put it on this thing tht ill invite. it means that i need some kind of hot plate or something were trying to get the soup to stay at 110 degrees farenhiet!!! HELP ME

i mean not a hot plate i need to invent a bowl that when u put soup in it it will stay the same temp...or if thts impossible we could use a hotplate of invent something I NEED SPECIFIC IDEAS HERE PPL!!!

Answer 1

DIane W had a good idea, but try this: you will need an insulated dish, like an insulated lunch bucket (you get them at K-mart or any place where you bought your school supplies), and a goose-neck lamp. A goose-neck lamp can be adjusted, and it uses inexpensive light bulbs. Check the power rating of the lamp and under no circumstances exceed the power rating!
Now start with say a 60W light bulb and bring it close to the top of your insulated bucket, and see what happens to the temperature (ah, you also need a thermometer). If the temperature is too high, adjust the lamp so the light bulb is higher up; and repeat still higher if necessary. If it is still too hot, try a 40W light bulb; you could even try a 25W light bulb, but do not use the compact flourescent light bulbs, cause they don't have enough power.
You will eventually find the right combination of light bulb and distance. Then measure the distance between the bulb and your soup dish. You now have a portable "soup-warming" machine.

Good luck.

Answer 2

I'm not sure you can maintain the 110 degrees in a bowl without a lid since the heat will dissipate. But for an inexpensive way to insulate a bowl, get 2 bowls you can destroy like those plastic mixing bowls (not your mom's good ones). One should be about an inch bigger all the way around. Then get a can of the foam insulation that comes out like whipped cream. Also, try to find an old heating pad that still works.

Remove the heating element and wire from the heating pad and tape it to the outside of the small bowl. Be careful not to cut the wires. (Wear rubber gloves for the rest) Next, spray some pam into the big bowl so it will come out easily, and then put enough of the foam into the big bowl to fill it about 3/4 full. Do this outside on plenty of newspaper. Then push the small bowl down into the foam so the foam comes just up to the top of the bowl and making sure the electric wire is hanging out so you can plug it in to warm the bowl later. Let that set overnight and when you pull it out, the small bowl should be encased on the outside with about an inch of styrofoam. You should be able to plug in the wire and it will heat the bowl.

If you can, warm the soup to 110 degrees before putting it into the bowl, but if you can't, you should be able to run the bowl on high to achieve and maintain 110 degrees. If it gets too hot, just watch the thermometer to time it and turn it to a lower temp to maintain the 110 degrees.

Good luck!

Answer 3

Farm Stores self feeding tank heaters. They are pieces of wire that cause heat through Resistance. Its the same principle that electric ovens and stoves work on. So you use wire and generate enough Resistance to make heat with out causing a fire. You can also use lots insulation. Or you could rig a blow dryer to continuously blow on the soup.