gas turbine gas compressor at the start up first has the inlet valve closed. What can be the main advantages.
135931
Gas turbines have enormous power and speed,if you start your compressor with an open valves there will be no drag to the gas turbine, therefore the possibility of a "runaway" or overspeed will occur, destroying everything inside your compressor,closing the valves create a resistance to the driver through your pistons or screw (whatever type of compressor you are using,)keeping you from having a "runaway" or overspeed.
114605
A sending unit in the tank that works with a float controls the gas gauge. A float type apperatus in the gasoline pump nozzle shuts off the flow of gas when gas begins to back-up in the filler neck as the tank nears full.
615588
your question is poorly worded but here goes. if the tank leaks down when it is not on the gun you need a new valve or the O ring that seals the valve to the tank in bad. if it leaks down when its onthe gun its either the gun or the O ring on the outside of the valve. as a general rule you should remove the tank from the gun whenever you are not using it. its safer and saves gas since most markers will leak a little over time.
256037
A turbocharger is an exhaust gas-driven compressor used to increase the power output of an internal-combustion engine by increasing the mass of oxygen entering the engine. A key advantage of turbochargers is that they offer a considerable increase in engine power with only a slight increase in weight.
446157
"turbo" used in normal piston driven engines uses the exhaust gasses energy to drive a (typically) radial turbine that is connected to a compressor that compresses the intake air. \n\nThe increased amount of air (mainly the oxigen in interesting) allows to add more fule to the mix and create a larger explosion in the cilinder yielding more power.\n\nThe air can optionally be cooled using an "intercooler" (air-to-air heat exchanger)\n\nFor diesel powered engines the result is an increase in power of the engine and an improvement of the fuel economy. For gasoline powered engines the results are an increased power, but the fuel economy might go either way.
221254
Because this is not a science question, it is a language question.  "Open" in reference to a tap is different than "open" in reference to a switch.\n\nWhen you turn on a tap (valve) the internal area becomes larger and the fluid (water, gas, whatever) flows.  When you turn on a switch (completing the circuit) electricity flows.  For switches, "open" means off.
350433
Hydraulic systems have two major advantages over pneumatic;\n1. Hydraulic systems can develop much higher pressures, thereby producing much higher forces in actuated components.\n2. The hydraulic fluids are incompressible (virtually).\n\nThe second advantage listed above has many byproducts of advantage on its own;\n1 Hydraulics give very smooth motion of actuated components, since there is no "bounce" due the the fluid compressing and expanding as in pneumatics.\n2. Hydraulics can easily stop motion in the middle of actuator movement, where pneumatics (without a lot of additional effort) only accurately position at the end stops of actuator movement.\n3. The speed of actuator movement can be more accurately controlled in pneumatics because of the smooth motion as described above.\n\nPneumatic systems are often used instead because pneumatic pressure is usually cheaper to obtain, especially since most industrial facilities already have compressed air available.\n\nSince many systems don't require extremelly high forces, and only need to make movements from one position to another, and dont need to stop in between, pneumatics is the easier and cheaper way to go.\n\nAlso, hydraulic systems are dirtier than pneumatic systems. There is a saying that I can personally attest to being true, that is that there are only two type of hydraulic systems, those that leak, and those that will eventually leak.\n\nWhen a hydraulic system leaks it is leaking hydraulic fluid, where as when pneumatics leak, it only leaks air, and the air can be kept very clean with proper equipment. This can be very important  in food and pharmaceutical facilities where cleanliness is important.\n\nI just looked up on line and read where the 777 has hydraulic control surfaces.
565943
I believe it's cooled to prevent pre-detonation of the fuel/air charge in the cylinder. So, if you send the hot gasses back into the manifold without cooling, you'll get knocking in the engine.
637005
Probably sonic flow of gas relative to leading edges of compressor blades (guess)
23018
CO2 motors are compressed gas motors; no combustion takes place in the motor. There is a piston and cylinder assembly like an internal combustion motor, but at the top of the cylinder, instead of a spark plug, there is a ball valve. Atop the piston is a small spike that displaces the ball valve at top dead center (full up piston position); when displaced, the valve allows carbon dioxide gas into the space between the cylinder head and piston top. This generates the power stroke, which ends at bottom dead center (piston down fully), and the spent carbon dioxide is exhausted. CO2 motors are usually used on model aircraft of various sorts; some of the finest are made in the Czech Republic and in Russia. They are very popular for "free flight" models in Europe.
400771
Depends on what you feed it.  It usually uses the ambient gas which is air and all it's doing is pressurizing it.  But if it's a closed system  compressor like the one on your frigged, then it would be freon or some other refrigerant.  If you took an air compressor to mars, it would just compress whatever gas was in the martian atmosphere.  You would not be able to breath it.
47377
C - power stage = burning of fuel and gas expansion - the valves has to be closed to seal the combustion chamber or instead of a move of piston (power) you'll have a fire ball running into your exhaust and fuel system - not pretty...
226307
I think you're referring to a closed-cycle (i.e., water condensing) steam engine. The first picture on the ref. 1 page is a diagram of the Rankine cycle engine. The exhaust steam passes into a condenser where it gives up heat and returns to the liquid state (water). Then it is pumped back into the boiler. A small, high-pressure, low-displacement pump is used, so the power needed is far less that that generated by the engine. Since water is scarce you may have to use air cooling for the condenser rather than water cooling. And (unlike the representation in the diagram) the condenser must be vented to avoid excessive pressure, so some steam may be lost. The ref. site will give you some ideas for engine construction, including links to engine parts and kits. Unfortunately these tend to be expensive. If you can find a junked engine or piston pump you might be able to adapt it to steam use, but adapting a gasoline engine would be difficult and my knowledge ends at this point. Good luck.
321613
The reason is better burning of the fuel in four stroke engine.\n\nThe two strokes have a lower compression ratio. The piston  will start its compression at the point where it passes the exhaust and intake ports located halfway travel on the side of the cylinder.\n\nThe four stroke are more efficient due to higher compression ratio. The compression starts from the lowest point of the piston all the way up to the top of the cylinder.
273145
Advantage: Lots of power! You can produce the equivalent of burning 1.6 tonnes of petrol using 1g of UO2.\nDisadvantage: if not controlled, and like they said before. A BIG explosion.
338239
I believe it developed on time as a practical ecomonic choice or industry standard.\n\nYou would want to use a very low pressure if possible but still it needs to be high enough to actuate instuments and control devices.
104782
Elements of a Pneumatic installation are often available\nand easy to find, I know what you want to build, then list\nthe elements and buy it. If you just want to see how it works, you can buy a kit (search internet to find it).\nMost expensive member can be the compressor.