does making the diameter of a pipe make pressure less or greater?
966798
I may get confused on this. Increasing diameter lowers the pressure, but, increases volume. In a house we normally use a large pipe as a main and it supplies volume. Then we decrease pipe size to various Faucets and Water Heaters depending on their input size. When done properly you can flush a toilet without the shower burning someone. A sink Faucet will have more pressure from less diameter, but, it will have less volume. So, a sink faucet may fill a gallon jug slower than the Garden Hose Faucet. I hope I explained this correct. Been a while I worked with this stuff.\nYea, what is said above more correct, I give them a Thumbs Up. Velocity what I was trying to think of. Like a spray nozzle on a Garden Hose. The velocity make it seem it more pressure.
973746
picture a water pipe that is 1/4 inch in size, and a water pipe that is 5 inches in size.\nWhich one can move more water?\n\nnow invision dial up and the small pipe and broadband as the large pipe.\n\nof course the use it to move more stuff.
1078399
i'm not very sure if this is what you're looking for, but for a closed system with constant temperature, pV=p'V'. since volume, V = pi x (diameter/2)^2 x length, with constant length of the pipe, we have V = k(diameter)^2, where k is constant. hence, pV=p'V' is rewritten as p(diameter)^2 = p'(diameter')^2, i.e. p'/p =(80/250)^2. the new pressure is 0.1024 the original pressure.
347055
Yes, it pumps easier which makes the pump motor use less power, which saves $$$$... Plus, it doesn't tend to plug up instruments & valves like the thicker stuff does.
1087373
In trying to protect a gas processing facility from over pressure you much look at the design pressure of the high pressure portion of the plant and that of the incoming pipeline. Many times these are not consistent. \n\nIf you have a 1200 psi designed pipeline feeding into a 1000 psi designed plant then you would have to consider the possibility that the plant might be isolated by valving at a time when the pipeline is at maximum pressure and someone opens the inlet valve. In that case the inflow rate once the plant pressure exceeds 1000 psi might be greater that the 40MMSCMD. \n\nIn the reverse case where the plant design pressure is greater than or equal to the pipeline design pressure, the inflow rate is not a controlling case for over pressure protection.\n\nOne must look at each change in pressure level to determine all the circumstances that can cause an over pressure no matter now remote the likely hood. The odds of a particular event occurring is not a consideration in ranking the various cases.
557989
You can't. It depends on which way the diameter is turned in the circle. There are an infinite amount of solutions. Tell your teacher to be more specific.\n\ntosmith
329557
Try this....\n\nhttp://www.efunda.com/formulae/solid_mechanics/mat_mechanics/pressure_vessel.cfm
739918
PRESSURE getting less
735996
D-W Formula for,\n\nHead loss due to friction in piping network\n\n=(friction factor*length*velocity^2) divided by (2*g*inside diameter of pipe)\n\nSo, from above formulae and my practical experience ,head loss can not be greater than pipe length in a fairly designed piping network.
787538
It also may be known as strain Gage.\n\nYou can use this device in place of pressure strips.
230122
Are you sure there is a relationship between these variables?  \n\nCan you define pressure tendency? Do they make a pressure tendency gauge?
243281
Yes because of the water. The first and most important rule in plumbing is that eventually a gasket will leak. So you must be prepared. Maybe one in a million. You take the chance ?
943088
Depends on the head type...unless you need to be extremely exact assuming 1/2 the vessel diameter is pretty good(i.e. a semi-elliptical or 2:1 head).\nKeep in mind though that pressure vessel heads have some straight-side to them when they are manufactured and the way I understand it is this amount is determined by the equipment manufacturer.
1147399
A long skinny cylinder is the preferred shape for high pressures.  But if you have a cylinder and a sphere with the same diameter and wall thickness, the sphere will have a slightly smaller hoop stress because theoretically there is no "hoop" in a sphere since the diameter is never a constant over any width of cross section.
786817
Anywhere there is a difference in pressure. Examples:\nLow pressure in a vaccum cleaner, higher pressure outside pushes the air into the cleaner. Different pressure in a house compared to outside, when you open a window the higher pressure flows to the lower pressure. Remember that it is always a push and never a suck. Science never sucks!
108206
I think you can use Bernoulli's equation to predict the difference in pressure from one area of the hose to the other and, therefore, the pressure drop:\n\nP = (flow rate * 8 * viscosity * length of hose) / (pi * hose radius^4)\n\nNot sure if it works though...typically used for fluids...
424379
The answer is "no"\n\n"Can you guess the riddle?"\n\nNo i cannot. Kinder gardeners do not know what pressure is.