The nearest thing I can think of is an oven.
A boxlike heating device used to heat things at a very high temperature for a long time (making bricks, pottery, etc) is called a kiln.
Heating a gas in a closed container would increase it's pressure. This would happen because when you heat the gas, the particles' kinetic energy increases, making them move faster, and more. They will hit the sides of the container and create pressure.
If your hotplate is not heating your solution or whatever you are trying to heat enough, I suggest some modifications to your container. You could try insulating say the glass flask with glass wool. There are also special insulating materials that are used for this purpose. If you do not have a separate temperature control for the hotplate you can try that too.
Evaporate the liquid, possibly by heating it.
Newspaper and styrafoam.
heat capacity and mass
The materials in a immerisian heater are used for making the heating element heat in water. Without them they couldn't be a chance for the heat to last.
Heating a gas in a closed container would increase it's pressure. This would happen because when you heat the gas, the particles' kinetic energy increases, making them move faster, and more. They will hit the sides of the container and create pressure.
Immersion heaters allow you to heat liquids directly. This is more efficient than heating the object that holds the liquid, because the heat must heat the container, then the container must heat the liquid. Other heaters cannot do this because they cannot be submerged into liquids.
The test ring in a heat exchanger is the seal, that keeps the water from the heating container. The test ring should be changed every year.
Heating a gas in a closed container would increase it's pressure. This would happen because when you heat the gas, the particles' kinetic energy increases, making them move faster, and more. They will hit the sides of the container and create pressure.
Any sealed container that is exposed to high heat can explode. Unopened cans and jars should never be heated. They need to be opened before heating.
A crucible is a heat-resistant container in which materials can be heated to very high temperatures. If you heat with the cover on, it could produce an overflow of the material.
over long periods of time, mud and sand and other materials were deposited on top of them. Heat and pressure from these materials changed the dead matter into petroleum, or oil
That way, the house loses less heat, and you save on heating costs.
Yes, depending on what material it's made of, it would have a different coefficient of thermal expansion. Materials expand with heat.
Materials with electrical resistance. The heating in any circuit element is by Ohm's Law given by (Current)2 x Resistance. Some materials like silver and copper have very low resistance so little heating.
If your hotplate is not heating your solution or whatever you are trying to heat enough, I suggest some modifications to your container. You could try insulating say the glass flask with glass wool. There are also special insulating materials that are used for this purpose. If you do not have a separate temperature control for the hotplate you can try that too.