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  1. H

    Monotube Flash Boiler Design

    I do not think a fuel pump has the requirements to handle water, especially hot condensate. You should ask the manufacture before you use it see what they say.
  2. H

    Monotube Flash Boiler Design

    If you have a high efficiency furnace it can also be a pressure sensor that has water in it. This was my experience last winter. Furnace would initiate a start come on line and then drop out because of that interlock. The service technician replaced it. I dont mess with the furnace anymore...
  3. H

    Monotube Flash Boiler Design

    Bit hesitant to reply but there are several engineering issues that may be ok for smaller systems but not ok as the size goes up. Let me give you an example. Lets say your fan has a hickup like blows a fuse or has a short some where. Unless your system instantly knows this the fuel system...
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    Monotube Flash Boiler Design

    A DCS system has a few vulnerabilities that is not often talked, about. One is loss of power, two is shutdown positions on system failure, three is software issues, four is backup transfer, I could go on but a DCS (distributed control system) is nice because it can be incorporated in controlling...
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    Monotube Flash Boiler Design

    The best way to calculate the required combustion air is on a molar basis (100lb/mole) especially if you need to consider Nox formation. The energy from bond release heats the gases and the heat from the gas and flame is released by radiation and convection across the heat transfer surfaces...
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    Question about putting VFD on a step pulley mill.

    I converted my lathe to VFD drive using (Clough42 on you tube) circuitry. After doing research on using VFD drives carefully consider the VFD drive horsepower range some recommend a size twice the motor horsepower. I powered the VFD drive with a high voltage (120 volt) Allen Bradley switch...
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    Vertical 4 cycle engine from recycled parts

    I rarely if ever let my wife work on anything mechanical unless I know I have trained her specifically for the task. Its not that she cant do she has never done that type of work. Your not alone bud! But she is a darn good cook.
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    Monotube Flash Boiler Design

    So you know while building this thing, high excess air will drastically lower flue gas temperatures. This will increase stack gas losses and will distort your analysis. You will need a mass air flow meter on the fan and a o2 sensor in the exhaust gas to measure this.-Boilers will work with...
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    Monotube Flash Boiler Design

    Boiler Feed Pump Size: Requires establishing boiler firing rate in terms of mass. Requires establishing boiler maximum pressure in units of your choisce Requires sizing pump for 120% or more for mass flow at a pressure greater then allowable boiler pressure. Freon will probably require a...
  10. H

    Monotube Flash Boiler Design

    The accepted way to calculate boiler efficiency is to measure the exhaust gas temperature, and the o2 and Co2/ You then calculate the theoretical heat release and subtract from it the stack losses. The theoretical heat release use fuel calculated in weight, volume of mcf. You will need an...
  11. H

    Removing pulley from a motor spindle

    If you wish to retain the motor and the shaft and IF you can get another pulley it is possible to cut the pulley off. This might sound a bit brutal but with care it can be done. A cut is mad on the outer rim of the pulley towards the shaft. Its done with care and eventually the stress will be...
  12. H

    Grub screws keep coming loose!!!

    Grub screws are made with at least five maybe six different types of ends. Flat, domed, cup,cone, knurled, and dog point. However in your situation Kiwi2 has a very good solution, and its the way Briggs and Stratton locks in their valves to set valve clearance. I probably would go with a cone...
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    Experimental Flash Steam and others

    It allows for a higher compression ratio due to the geometry. And of course the greater the compression ratio the more power you get until detonation occurs and then the engine becomes a diesel. There are equations that prove these concepts. However, higher compression comes with a very...
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    How do I design a cylinder head?

    There are a number of good recommendations in the posts. You should know that a lot of work has already been done on developing engines that use hydrogen fuel. The Japanese have done considerable work on this topic. So has Ford and maybe GM. The heads are no different than an gasoline type...
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    Compressed air safety

    Stainless is a very good choice if price not an issue. The water condensed is pure water with little or no ions and is thus highly corrosive. Oxygen enhances that effect. The reason its difficult to sell these stainless tanks in Canada is due to its process regulations which vary from...
  16. H

    Compressed air safety

    My experience in the US dealing with pressure vessels that are part of the air systems was driven home by the insurance carriers inspections. They required that the safety valves be inspected or replaced annually. I do not ever recall they demanded wall thickness test be conducted. Nor did...
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    Monotube Flash Boiler Design

    The sonic velocity V of a gas is determined by the constants R, K, g and the value of its temperature. That is V= square root (gkRT). Note that this value increases rapidly with T. Seven degrees does not guarantee smooth subsonic flow. Turbulent flow is always a given because the Reynolds...
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    Monotube Flash Boiler Design

    Work that the turbine can do in a rankine cycle is a result of pressure volume work. This will depend on the pressure drop available from the turbine nozzle to the condenser. Secondly the blades and the allowable area for flow has to take into the possibility of choked flow which is dependent...
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    Engine Coolant and Storage After Shows

    If the distillation is well designed you will have pure water but most systems will give you water of high quality but not totally pure. Pure water is an acid and will and react chemically and it is called aggressive water in common language. Heat is applied to the water and the phase...
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    Experimental Flash Steam and others

    The longer the slot the more adjustment is available, but if you have attachments that can mount to shorter slots its ok, I prefer the slots orientated to the screw because it allows the attachment to be moved forward or back from center line. I do have one 90 degrees to the screw and it...
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