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Martin: Just for your information the boiler shown would be outside of ASME miniature boiler classification as it exceeds 250pig. I would call this an A frame quite common in larger sizes. The ASME , API, and ANSI standards often overlap and the material code will let you know what standards...

The size boiler you are considering is not considered a small boiler. Based on conversion from kw to btu and using 1000btu/lb steam its a small residential size boiler. ASME lists a minature boiler at less then 100 psi and no more than 16 inches in diameter. If you are looking at fuel...

I would recommend staying as far away from biomass as possible. Its not the burning that is a problem, it is the ash softening temperature which is low. The ash melts and its a major design issue of getting it out of a unit if not impossible. Basically the bulk furnace temperature must be kept...

I have been following this subject with an interest. It seems to me that if you are looking at heat transfer from a radiant aspect and given the assumption that a ceramic burner is about 950 degrees C it is lower than a conventional flame or coal fire by about 500 degrees C. As the radiant...

I have constructed several computer programs to determine the firing efficiency of coal, gas, oil and MDF(waste) With gas boilers I found the set up of air fuel ratios to be more difficult because of the tendency of gas to put you in a position of explosive condition. Pulverized coal can also...

You are correct in thinking coal burns differently. A btu is a btu but coal does not form a lot of water of combustion because of the amount of hydrogen available. This hydrogen forms water and contributes to stack loss because the enthalpy of vaporization can not be recovered easily. Maximum...

I admire your confidence. And with a ph of 7, oxygen , copper tubes, high heat flux, and scaling I will use the quote from Jimmy's World on youtube What could possibly go wrong! Have fun Tale Care HMEL

It comes in with the distilled water. Even though its distilled it will carry with it some dissolved solids and some entrained gases. Once in the boiler if not removed it will deposit somewhere. Now the boiler is steaming and it brings in more water and it gets another round of solids...

As I understand the Stanley steamer it was a fire tube boiler with a steam generating system space. You are making a water tube boiler and so far I have not seen a drum or vessel to release the steam, The steam simply exits the piping. Steam will be formed along the walls and flashed out the...

No, thinking about vertical sale its reversed numerically so I wrote that wrong. Should be number less then 7 acidic greater then 7 basic.

Yes, meant to say the other way around.

Boiler water specs are rarely ever given in grades I,II,II. water specs are generally given in Ph, total disoved solids, and and other requirements. The information given is accurate for the situation we are discussing. It depends on how the water is purified. If the cat ions are removed via...

The ph scale is a measurement of the hydrogen ions in solution based on the dissociation constant for H2O. At exactly the value of 7.000 the number of hydrogen atoms equals the number of OH atoms. So at values above that 7.0 it contains more hydrogen atoms then OH atoms with the rest being...

If you use the ph scale which defines the excess of proton ions as as acid and accept that the number of OH atoms being equal its fair to say its neutral. There are two other definitions of an acid which I would have to go look up. But the proton itself is a very hungry atom in pure water that...

The wrong metals in contact such as copper fitted to steel will corrode. There exists a electro negative chart which lists the potential for this listing the metals in order. Corrosion will occur just from that electro potential and effort is generally made to avoid this in design. Liquid...

Yes, de-ionized water has salts in it because of the way it is made. Distilled is the next quality, and ultra filtration falls some where in between. And by definition pure water is acidic although it carries a ph of seven. It has to do with the nature of a proton which is more reactive then...

Well for one thing they are often buried in the fuel tank to keep them cool. Second the hot condensate is going to significantly heat that pump up. And because there is temperature not sure what the suction head requirement is enough for the service. And there is a possible issue with the...

Yes, I agree. Was thinking meehanite was restricted to the very high carbon content and did not realize it included a range of carbon cast irons. You learn something everyday.

Pure water is an acid. It is given a non technical name aggressive water because it is so corrosive. It is quite conductive because of its free ions. Oxygen is usually removed with a deareator (open feedwater heater) Solids entrained in the water will require blow-down. The single tube boiler...

Would you really want to use meehanite? It is especially high in carbon and mostly used in very abrasive environments and very brittle when you work with it. Just curious for all I know maybe its better than I think it is.