What are Gas Ports engineered to do in a Modern Rifle?#2?
Depends on what type of ports you're talking about. In a bolt action like a Mauser, there are some venting capabilities in the bolt designed to divert some gas away from the shooter in the event of something like a pierced primer. Almost all bolt guns since the large ring Mauser (invented 1898) have this feature, whilst some earlier guns like the small ring Mausers did not. Bolt guns are still used in modern times and still have this, but there are other uses of "gas ports". On a semi-auto, there will be some ports further up in the barrel that is used to take some of that gas that has built up and divert it to work a piston that comes back and works the action to load the next round. You will also see references to a barrel being "ported". These are typically small holes before the end of the barrel that allow the gas pressure to escape and bleed off a bit before the projectile exits the barrel. This is done to reduce the recoil - to the determent of noise level - ported barrels are typically loud enough that I consider them an evil, evil nuisance at the range. Typical hearing protection doesn't help a whole lot against these. If you can't take the pain on your shoulder don't offload it onto everyone else's ears.
What is the most efficient way to heat a small home?
If you can afford it, a ground source heat pump with inline solar panels and or a wood fired boiler. The three should be interconnected to an enthalpy control for maximum efficiency. RScott
Can you use type b double wall vent pipe for a small wood burning stove?
Karen is correct. FOR YOUR REFERENCE: Metal-Fab round and oval type-b gas vent is listed by Underwriters Laboratories, Inc. for use with approved gas furnaces, heaters, fireplaces and boilers. Metal-Fab meets or exceeds all recognized gas venting codes, standards or requirements, whether local, state or United States. Maximum temperature rating for b-vent is 530 degrees F. 1" minimum clearance to combustibles for 3" through 24" diameters.
What will you do to prevent Climate change?
I will vote Republican. For energy conservation, I will and am converting to LED lighting. I am working to eliminate steam heat and convert facilies to hot water heat. systems are more efficient and you gain a significant amount of controlability. We can save 40% or more in energy consumption by converting from dentral steam plants to distributed hot water boilers utilizing condensing hot water boilers. I will and am improving building envelopes. Better insulation, windows, door seals ventilation controls etc. I will and am converting more and more systems to VFD drives. I will and am installing modernizing and expandoing digital controls in facilities. Got science?
What happened when my oven's lower element spewed sparks?
What you saw is called a ‘short’ - a short circuit.Heating elements inside stoves are actually long metal tubes, with a resistive heating element (a wire, like those you see in a toaster) packed with electrical insulation that separates the heating element from the outer metal tube. They are bent into the shape that you see - if they are used on the stovetop, one side is flattened first so that it will make better contact with your pots and pans.The heating element is energized, current passes through it, and the resistance of the wire makes it get hot. When it gets hot, it expands a little, and when it cools down, it contracts - again, just a little. Event though it doesn’t move a lot, sometimes the insulation isn’t perfectly packed, and over time, the inner heating element can move enouth that it can contact the outer metal tube. The outer metal tube is grounded, so the electrically live wire touching the outer grounded tube can - spark.That happened once when my mother was boiling potatoes. The pot ended up with a quarter inch diameter hole in it before the circuit tripped.Your heating element is no longer any good and should be replaced.