Mechanical Engineering

There is no perfect incompressible fluid.You can compress anything with certain pressure.

because he sat on the toilet

sitting on the toilet

Plant Design Management System.

This softwere is used for 3d designing of offshore platfroms, refineraires, chemcial plant, power plant etc.

In discussing adiabatic efficiency, it is best to first define efficiency. In its broadest terms, efficiency can be defined as the ratio of work output to work input normally expressed as a percentage. With regard to a compression application, one measure of the efficiency of a compressor is the adaibatic efficiency (Volumetric Efficiency being the other). Adiabatic Efficiency is the ratio of the amount of horsepower required just to compress a particular gas (Adiabatic Horsepower) divided by the total brake horsepower required for a praticular type of compressor to accomplish the desired compression. Note that Adiabatic Power is the same regardless of the type of compressor used because it is a function of the physical properties of the gas being compressed, and not the type of compressor doing the work. In other words, it takes a specifc amount of energy to compress a specific volume of gas to a particular pressure and this energy is the same no matter what technology you use to accomplish the compression. Adiabatic HP is the numerator of the equation and is the same no matter what kind of compressor is used.

The denominator of the equation is total brake horsepower (BHP) and it is the total power required for a compressor to accomplish the desirder compression. This will be a larger number as BHP includes adiabatic power plus all the other energy required by the compressor to overcome other losses requiring energy such as drive losses, mechanical friction losses, intake/discharge valve losses, heat exchanger losses, lubrication system power, etc.

Therefore, to answer the question specifically would require information on the specific gas being compressed, flow, pressure, atmospheric conditions, etc. To answer the question in general terms, the rotary vane type compressor will typically have a higher adiabatic efficiency than screw compressors and reciprocating compressors by virtue of the fact that other losses from friction, lube systems, valves, etc. which tend to be significant with screws and recips are not substantial and sometimes not present at all with vane technology. As such, vane compressor total BHP is normally lower than other technologies resulting in higher adiabatic efficiency. Another reason vane machines often have higher adiabatic efficiency is that they are limited to a maximum compression ratio of approximately 4.5 to 1, (depending on the type of gas and the application requirements). As is documented in Marks' Standard Handbook for Mechanical Engineering, as compression ratio increases, both adiabatic efficiency and volumetric efficiency decrease on screws and recips. Therefore, for discharge pressures up to approximately 125 psig, the vane technology, even in a two stage system, will likely be more energy efficient than other compression technologies.

The above is a broad answer to a specific question and the degree to which the efficiency is greater (or not) will vary with the specifics of the application. Adiabatic efficiency is however, a good measure of efficiency and a good indicator of how energy efficient equipment will be once in operation. All the compression technologies mentioned are viable and proven and some are better suited than others depending upon the specifics of the application. For example, as noted above, the vane machine is well suited for relatively high flows and for compression up to about 125 psig. For processes requiring compression above 125 psig discharge pressure, the vane technology is not suitable and screws or recips are likely the more appropriate technologies. Finally, in addition to power cost, buyers should also other factors that impact the cost of ownership such as parts, service, and maintenance requirments when considering compression equipment.

If a job requires mechanical ability, they are looking for someone who knows how to use tools and machinery.

We often find a saw used to cut bolts. Rivets might be cut if we can get the saw on the body, but we often have to drill them out. A sidewinder grinder will make short work of them if you can get it on the body of the fastener. Certainly a plasma cutter will slice through them, but we have to be careful about damaging material around the fasteners when we cut them that way.

The major two types of simple pulleys are movable and fixed.

An example of a fixed pulley would be a flag pole. The pulley is fixed in place while someone pulls on one end of the rope to lift the flag on the other end, the input force and the output forces being equal in magnitude but opposite in direction.

nombre :22

Place the gauge inside a sealed piston. Place the weight on top of the piston and read the pressure from the gauge. The force exerted by the weight multiplied by the area of the piston will give you the actual pressure exerted on the gauge. Using SI units. A 5 kg weight placed on a 0.25 meter diameter piston will create a pressure of around 1 pascal (Nm^2). 5N*Pi*0.25m^2.

Ceran HV, Ceran HVA, Ceran MS

In order to determine proper gauge of welding cable you must first determine how long the distance you will need in cable, the entire length for both electrode side as well as work clamp side, and you also need to know the amperage you will be using. Once you determine this there are various references online and offline, most commonly in the owners manual to most welding machines, that will give you the proper size based on the amperage and total length.

there are a few different factors in determining the size of welding cable you use. Thickness of base metal, distance from machine to worksite, and amperage. I am a welder in the navy and sometimes we run our leads over far distances therefore we need a bigger welding lead to handle the increase in amperage to maintain the proper work temperature. There may be more reasons for using a bigger cable but I am not sure.

Microwave is an electro-magnetic wave and travel at speed of light or 3x108 m/s.

It will be extremely hot!

steam it and use a home made jig or wet it

Plasma arc welding can weld almost any commonly used metal. It is not limited to magnetic metals, they only need to conduct electricity.

mech.

Replace the rubber gasket. Inspection of air valves. Compressor control.

the steam strikes/enters the turbine th turbine rotats at requried speed.then it connected to genaretor ,the electricity genareted

A drill press is used on all types of materials, woods, metals and plastics .

to pump out liquid or gas in higher quantity

In cars, air planes, boats and also many constructional machines.

Possibly blockage of the expansion valve or orifice tube.

It depends on how the steel is heat treated, so there isn't a single answer.

when the pressure increases over the maximum allowable working pressure of the vessel, the valve will open to protect against overpressure.