what is the diffrent type of steam boiler?
472935
2 main types i know of only. Water tubes n smoke tubes.of course for each of these they have their sub classes. if u go by the brand n features to further classify them, the list is probably very long.
937711
A demineralizing plant does just that, it demineralizes water.  Water, used in boilers to produce steam, has a lot of minerals and oxygen in it.  These minerals will form deposits on boiler tubes and therefore reduce heat transfer (or in simpler terms, make it harder to heat the water into steam).\n\nDemineralization is accomplished by ion exchange.  Basically, salt ions in water are replaced with hydrogen ions.  To learn more about the process, I'd look up "zeolite process" on google or Yahoo!.
715196
distill\n\nboil liquid, and cool the steam.
731511
When coal is used for electricity generation, it is usually pulverized and then burned in a furnace with a boiler. The furnace heat converts boiler water to steam, which is then used to spin turbines which turn generators and create electricity. The thermodynamic efficiency of this process has been improved over time. "Standard" steam turbines have topped out with about 35–40% thermodynamic efficiency for the entire process, but the emergence of supercritical turbines running at extremely high temperatures and pressures has led to efficiencies of 46%, with further increases in temperature and pressure offering potential for even higher efficiencies. Approximately 40% of the world electricity production uses coal, and the total known deposits recoverable by current technologies are sufficient for 300 years' use at current usage levels, although maximal production could be reached within decades.
143805
Steam has more heat energy in it then water.\n\nDont confuse heat and temperature, they are not the same thing.\nTemperature is the measure of the average kinetic energy of the molecules of a substance.  Heat is a form of energy.\n\nIf both the steam and the liquid water are at 100 degrees C, they are both at the same temperature.  However, in order to boil water into steam, you not only must raise its temperature to 100 degree C, but also supply additional energy, called the "Latent heat of vaporization".  This extra, Latent, heat is the cause of more severe burns.\n\nWhen you want to boil water, you must supply the latent heat, but when water condenses, it gives that energy up.\nAs the steam consense, your body absorbs that latent heat, but then it also absorbs energy from the 100 degree water that just formed.
76200
Hot water is taken from hot springs and used to run turbines.  Normal use of coal or petroleum in making electricity involves boiling water and running the steam through a turbine, but in the case of geothermal heating, your water is already boiling.
38213
Heat balance is a mathematical way of summing all the heat inputs and outputs to zero.  Just as in statics, all the forces on a point must sum to zero if it is stationary. \n\nFor a boiler, there is heat going into it, the heat of the burner exhaust going out, the thermal loss from all the piping and external surfaces heating the local atmosphere, the heat leaving the boiler by the mass flow rate of steam, and the entropy of the hot water under pressure inside the boiler.  \n\nSorry this is wordy, but I can't write an equation for you in this window.  Heat is usually referenced by Q, so look for 0=Q1+Q2+.... blaa blaa blaa.
515576
See at: http://en.wikipedia.org/wiki/Newcomen_steam_engine
520548
B Steam. Steam is the gases form of water. all of the rest are liquid forms of water. Note: what a lot of people think of as steam is not steam. Steam is an invisible gas, once it cools it becomes fog, clouds, and eventually mist. \n\nI had to add this because one of the previous persons was correct in noting that Clouds are sometimes made of ice crystals, so steam is still the most correct answer, but real clouds that are frozen is also correct.
670498
Heat exchangers, natural heating/cooling, jet mixing
864453
One BTU. Or British thermal unit
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I suspect you may have to install seperate systems and in respect of central heating you would have to have isolation valves to allow transfer from pressurised to gravity fed system - it would be complx but technically acheivable - I currently run two seperate heating systems in a now combined house (formerly two) and have considered this.\n heating of mains pressure water via wood stove boiler and or solar would be difficult and therefore a gravity fed system would be required.\nThorough planning and installation of switching options is required
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Energy that is due to steam moving electrons steam electric energy. It the most common way of generating elcticity and is used in coal, gas oil and nuclear power stations.
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In practice, a steam engine exhausting the steam to atmosphere will have an efficiency (including the boiler) of 5%, but with the addition of a condenser the efficiency is greatly improved to 25% or better. A power station with exhaust reheat, etc. will achieve 30% efficiency. Combined cycle in which the burning material is first used to drive a gas turbine can produce 60% efficiency. It is also possible to capture the waste heat using cogeneration in which the residual steam is used for heating. It is therefore possible to use about 90% of the energy produced by burning fuel—only 10% of the energy produced by the combustion of the fuel goes wasted into the atmosphere.
587903
Steam isn't "hotter", it's still at 100°.  What it has though is more heat energy in it kg for kg.  The extra energy is the heat of vaporization and it's the reason the steam takes up so much more volume than the water at the same temperature.  The water molecules have the same average kenetic energy - temperature - but they occupy much less space.
1174076
steam coal is a generic term for coal that is suitable for use in steam boilers.  That type of coal generally has a caloric value of from 12,000 to 16,000 btus per pound (.45 kg).   In general bituminous coal is used as steam coal.  It is a hard coal and has a high btu content per pound but not so high as anthracite.  Anthracite is normally not used as steam coal because it is not so plentiful. Only about 1% of coal is classified as anthracite. \n\n47% of the coal mined is classified as lignite and sub-bituminous coal.  These are sort of dirt that will burn, if you will pardon the expression.  They are also used in power plants, but contain much less energy per pound than steam coal. \n\nMetallurgical coal is very simial to steam coal but in general is a higher grade coal and sells for more money per ton.  It is coal that is suitable for making coke and PCI coal which is also used in making steel but is less suitable for making coke. Normally lower ash and sulfur content. \n\nCoal is taken from the mines in trainload quatities in coal cars and transported to the coal docks where the cars are dumped  onto a conveyor belt that transports the coal onto a dump tower above the ship's hold.  The ship is a bulk carrier and has basically an open cargo hold. The coal is bulk dumped into the hold.  When the ship is full, the conveyor belt stops and the ship sails to its destination where the coal is unloaded and conveyed by truck or rail to its final use.
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You must calculate difference of enthalpy between first and second condition.  Enthalpy depends on  temperature and pressure.And it can be find from thermodynamic tables.\n\nI accept 1 bar for water's pressure \n\n1 bar and 20 degree water's enthalpy = 84 kj/kg \n1 bar and 55 degree water's enthalpy = 104,725 kj/kg \n\ndifferent between inlet enthalpy and outlet enthalpy = 104,725-84 = 20 kj / kg (this heat necessary to increase of 1 kg water's degree from 20 C to 55 C ) \n\namount of water = 6000 lt = 6 m3\nspecific density of water which is at 20 C and 1 bar = 0,0010017 m3/kg\nmass of water = 6 / 0,0010017 = 5990 kg \n\ntotal heat requirement = 5990 kg x 20 kj/kg = 119800 kj \n\nXXX if this proses time is 1 hour then \n\npower or capacity of boiler for perfect situation ( perfect situation = no losses and boiler effiency 100 %) = 119800 / 3600 second = 33,2 kw \nif boiler effiency = 85 % then \nreal capacity of boiler for proces time is 1 hour = 33,2 x (100/ 85) = 39,05 kw \n\nXXX if this proses time is a half hour then \n\npower or capacity of boiler for perfect situation ( perfect situation = no losses and boiler effiency 100 %) = 119800 / 1800 second = 66,55 kw \nif boiler effiency = 85 % then \nreal capacity of boiler for proces time is 1 hour = 66,55 x (100/ 85) = 78,3 kw \n\nif you want to calculate capacity of boiler ,  first you must know proses time and pressure.