Browse Forums Heating, Cooling & Insulation 1 Feb 13, 2009 3:57 am Hi,
I'm working on a project that would require the ability to heat water into steam via electric induction, preferably DC or via AC converter if necessary. I'm thinking a monotube design with an induction coil surrounding it that could produce steam from 2 quarts of water in say 30 seconds or less. Anyone here have experience with that kind of design? Thanks, Re: Help with Induction heating for steam 2Feb 13, 2009 8:45 am Hi Santiago9767,
This is definately an ambitious project however I am not sure this is the forum for it, maybe and engineering forum would be more suited??? just a suggestion. I was involved with industrial induction heating equipment about 10years ago and what you are trying to do is definitely achievable. Your heating energy will have to AC however there is not reason why your supply power cannot be DC but you will have to have hardware to switch this DC signal into a alternating wave form. The inductrial heater where anything from 20kw to 150kw and the frequency of the AC signal was in the MHz range. I have heard of 50Hz induction heaters but the higher the frequency the more effective and efficient it will be to induce a voltage into material you are trying to heat. You are probably already aware but the metal you use will have to ferrous or it will not work hence copper base pots don't work on conventional induction cook tops. The inductrial units used every day copper piping as the induction coil, they had water running through them to counter act the radient heat generated by the part being heated. I have some old text that goes into finite detail of coil design. The inner coil diameter was only slightly larger than the part to be heated. The part was roughly the size of car tow ball and it could be heated to glowing red in about 500mS (half a second) or less. Is this unit going to be portable or a fixed appliance? Re: Help with Induction heating for steam 3Feb 13, 2009 4:29 pm Definitely use a single tube. I would use one with vanes on the inside to maximize surface area between the water and the metal.
Get a copy of Davies & Simpson's Induction Heating Handbook through interlibrary-loan. See also: Induction Heating Re: Help with Induction heating for steam 4Feb 13, 2009 5:36 pm I am at home now and have check the text I refered to earlier it is by S.Zinn and S.L. Semiatin ISBN 0-87170-308-4.
It is very detailed. David5675 has made a very good suggestion with the vanes. Does anyone have a suggestion for a good hydronic in slab heating speacialist who may be able to help me with an existing system and wether or not it may need a seperator… 0 4882 Hi there, long-time lurker but first time posting. I've bought a house 2 and a bit years ago and last year we had some major water damage on a converted pergola area… 0 7931 Yes, unless you are in a low intensity rainfall area or the area is protected from rain. Do you have access to NCC Part 2 or can you download it? I can email you a copy… 10 12511 |