Cheap way to heat water quickly, to a high temp

September 3, 2007 |

I’m hoping someone can let me know of a fairly inexpensive way to heat water very quickly to a fairly high enough temperature without having to add anything directly to the water, but instead heat a metal (or other heat transferring material) that the water will be poured over or contained in? It’s necessary for my experiment that it get hot enough to evaporate very quickly…it doesn’t have to hit the max. temperature immediately, it can ‘warm-up’ for a while at first, but needs to remain at a very high temperature without being cooled by the water. I unfortunately don’t know exactly what temp. i’m looking to reach, just that it be hot enough to evaporate water within a few seconds. And since i’m only in college and and don’t have a lot of means, i was hoping it could be fairly inexpensive (not like thousands of dollars). I know i may not have made the most sense with this post, but i hope you get the jist of it and can help out in any way possible. Thank you!

6 Responses to Cheap way to heat water quickly, to a high temp

  1. Anonymous May 11, 2010 at 8:53 pm #


  2. Anonymous July 28, 2009 at 4:46 am #

    ferrite 446 can withstand 1100 degrees F
    I would suggest this metal

    on a related note
    I would like to heat water for Hydrous pyrolysis
    I am aware of how to do this but I would like the
    cheapest and most time efficient way to heat the water to 500 degrees C
    with cost the prime factor, cost as in operation expenses not equipment price
    Thank you very much

  3. Anonymous September 6, 2008 at 8:12 pm #

    would it cost more to heat water using a cattle or to boil it over a fire?

  4. Anonymous August 19, 2008 at 11:20 am #

    Most claim to boil water in under a a couple minutes.

  5. savy13 September 3, 2007 at 6:01 pm #

    sorry about that…ur absolutely right, i wasn’t too specific at all!

    To start, i’m only thinking of only a few liters at a time. And you’re right about the very high temperature part too, i do need it to be hot enough for the water to VERY quickly evaporate upon contact or within a few seconds at the longest. I do also need to find a metal that has a high specific heat but also strong enough to not melt or have any of it disperse with the water vapor. I was planning on having the heat source heat the metal continuously and i can provide enough energy to do this. What i really lack though is the knowledge of which metals are strong enough to withstand continual high temperatures and have higher specific heats, as well as a source that can do the actual heating to a high enough temperature to have water vaporize very quickly when either poured over the metal or when contained in it.

    Thank you for responding!

  6. Anonymous September 3, 2007 at 4:31 pm #

    We need a lot more info in order to help you. How much water are you talking about? Why do you need to boil it? It sounds like you’re trying to do something with boiled water. Metal can reach a high temperature very quickly, but many types of metal will not retain enough heat (unless at a very high temperature) to boil a sufficient amount of water.

    It takes a lot of energy to cause water to boil and change from liquid to gas. Thus, you would need to contain a lot of energy in the metal, or continue to add a lot of energy to the system in order to boil the water. Also, water has a high specific heat, meaning it takes a lot of energy to change the temperature of some mass of water. Look for metal systems with high specific heats as well, as they will be able to contain a lot of heat, and thus transfer it to the water.

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