Pipe Definition and 1000 Threads

I'm trying to connect water from a city water supply to a residential fire sprinkler system. The pipe needs to be typical black steel, and hydrostatic test results show a static pressure of 48-psi. What size pipe would I need to achieve at least 26-gpm flow? I've calculated friction loss to be...

Homework Statement Oddjob rolls a canister of nerve gas twoards Bond, who is at the bottom of a curved trench. The canister has a mass of 16 kg, a radius of r = 0.8 m, and a rotational inertia of 10 kg*m2. It starts with no velocity. If the trench has a radius of R = 3.5 m, how fast is the...

Hello Everyone, It has been a long time since I have performed a calculation such as what I am about to describe. I have been out of school for a while now, and just haven't had to use any of these skills in the work place. In any event, here are the parameters that are known at this point...

Drilling hole in 1-3/8" pipe for fulcrum I am designing a small crane for a special purpose. I am using a 17 ga. steel 1-3/8" ten-foot pipe as a fulcrum. I am going to drill a hole 2 feet from one end to run the axle through. That will leave 8 feet on the other side. Is there a table or...

I am trying to learn how to calculate pressure at the end of a pipe. The pipe is 2" PVc and has a flow rate of 14 gpm at teh end of a 35' run from the pump. How do I calculate pressure at this point?

Homework Statement Water flows through a 1.3 cm diameter pipe into a 295 L bathtub, which it fills in 5 min. What is the speed of the water in the pipe? Homework Equations V_in=v_L*t*A_L (Equation I got in my class lecture, I think its a variation of bernoulli's.) The Attempt at a...

What IS Pressure-- in a pipe? Whaddup, guys! Sorry to bug you with another question. So, I learned that Pressure = Force / Area. Pretty easy stuff. Water will exert a certain amount of force per area depending on how deep the object is submerged. But... what about in a pipe? There's...

Homework Statement See attached jpg for problem statement and diagram. I know we didn't discuss this type of problem in class. The rest of this homework set has been solving stress transformations with Mohr's circles for a given state of stress. I know how to find τxy (that was supposed to...

Dear all I am trying to work out a price of steel pipe that I have. I have 900 metres of 9 5/8 inch pipe it weighs 40 pounds per foot and the price is $1,600 a metric ton. Now if I want to get the price per metre then I understand that I have to divide by 2204.62, which is about how many...

Homework Statement A compressor is required to drive acetylene gas at 1.85 kg/s through a horizontal pipe, 68.7 m long. The maximum pressure that may be developed by the compressor is to be found, and gas pressure at the delivery end of the pipeline must be 470 kPa. The system is to...

Homework Statement The pipe shown has a 180° horizontal bend in it as shown, and D is 20 cm. The discharge of water (ρ = 1000 kg/m3)in the pipe and bend is 0.30 m3/s, and the pressure in the pipe and bend is 100 kPa gage. If the bend volume is 0.10 m3 and the bend itself weighs 500 N...

Hi everyone, I am trying to determine the flow losses through a pipe with friction. I understand that the Mach number increases through the pipe to unity and that the flow cannot increase when unity is reached. If the pipe is longer than the hypothetical chocking length, what would be the...

Hi Can someone please confirm me on this one http://img822.imageshack.us/img822/9724/hydron.png 1. Is this picture correct? (The water level in the big tank and in the pipe will be the same) 2. Water level in big tank and pipe would be the same regardless of pipe size (red) Thanks

Homework Statement A heat pipe is a simple device which can be used to transfer heat over considerable distances using only small temperature differences. It consists of a sealed tube filled with an appropriate fluid. The dryness fraction of the fluid is usually about 0.1. If the tube is...

Hey so I am trying to calculate the following scenario. I have a chamber that must change in pressure at a certain amount of time. I need to find the volumetric flow rate coming out of the chamber. Here is the info I have P0=11psi, P1 = 6psi Change in time = .25s Fluid = air...

Two situations: * A pipe with high pressure fluid inside - stress determined by hoop stress. * A pipe with high pressure fluid outside Suppose the pressure differences are the same in each situation, which would have less stress? Or are they equal? My first thoughts are that if the...

I have a fluid dynamics homework question I could really use some help solving. "Consider a straight, circular pipe of inside radius R, through which flow an incompressible fluid. At the pipe entrance, the flow velocity Vo is uniform and parallel to the pipe centreline. The flow is affected...

kindly help me with this one. im trying to find out what is the effect if i increase the diameter of my header pipe in a water distribution line. i think pressure at the discharge pipe will decrease. if so, i don't know how to justify it. tnx in advans.

I have a problem and it consists on placing a square PVC pipe vertically in a trench and surrounding it in concrete, I would like to know how would I calculate the sufficient wall thickness of this pipe and the maximum depth of the trench etc before the pipe would yield to the surrounding...

Force exerted on U-shaped pipe by steady air-flow... help please! :) Hello! I have attempted this problem, and my result makes sense in my twisted mind. However, it seems like it came too easy! Homework Statement Consider a length of pipe bent into a U-shape. The inside diameter of...

I've heard of using isopropyl alcohol to clean the tar out of a pipe, but what about acetone? Which is a better solvent for tar? Would a mixture of both work better than either alone? (Would mixing the two be dangerous?) Thanks, Tyler

Hi all, I want to know if impeller diameter of a Blower can influence its suction pipe length. If so, then how are they related?

Homework Statement A student holds a 325.6 Hz tuning fork near the end of a pipe that is closed at one end. He notices that resonances can be heard for several different lengths, one of which is 55.5 cm. He gradually lengthens the pipe to 92.5 cm where he detects the next resonance...

Say I have two pressure vessels with the same pressure rating connected by a pipe when the first vessel reaches its pressure release state it starts filling the next pressure vessel what will happen when the two vessels have reached the same pressure release state. A. Will the second pressure...

Homework Statement You are playing a note that has a fundamental frequency of 428 Hz on a guitar string of length 56 cm. At the same time, your friend plays a fundamental note on an open organ pipe, and 6 beats per seconds are heard. The mass per unit length of the string is 2 g/m. Assume the...

Hello everyone. I have natural gas (methane) flowing through some piping, and the last little part of pipe is where I'm concerned. The gas goes through a drawn aluminum tube, about 5.08 mm ID (it's a very small tube). The tube has three 90 degree bends where it ejects out of an orifice. It...

Hi I was wondering how to calculate the speed of the water at a cetain point in the pipe (i assume that all the water at that radius is going at the same speed due to laminar flow)

I am trying to figure out the flow rate (gallons per minute) and PSI of the water just as it exits the top of the pipe. Is it possible to figure out these out given the information in the diagram?

hello! My first post here. I am by no means a mechanical engineer as I studied computer science in college. My question has to do with adding what is known as a cold air intake onto my vehicle. The design of the intake is such that the pipe fits at the throttle body via a silicone/rubber...

hydraulic -- flow inside a pipe, how to know the direction? if you have a flow inside a pipe, how to know the direction?

I have a small assignment at work that I can't seem to figure out. To not bore you with the details, I have developed a simple scenario. Say you have water in a tower that is 100ft tall that is flowing through a vertical pipe to the ground. If this pipe is instantaneously closed at the top...

Hey, I was having this very silly problem in heat transfer. Please could you see what's going wrong ! I am working on defrost water tray modelling. In that, the water collected during defrost is heated by the compressor o/p coil so as to aid evaporation. I was trying to find out the heat...

Hi, I've recently watched prof. Lewin's (brilliant man) lectures on Gauss' law, and I have some questions regarding this and a result from Gauss' law, the Faraday cage effect. It was shown that if one have a charge in the center of a conducting sphere, there will be a electric field outside the...

There are (5) 3/8" diameter pipes supplying water at 3500 psi and 4.5 GPM each from 5 separate pumps. These (5) lines connect to a main 1.5" diameter pipe. What is the water pressure in the main pipe?

Homework Statement Water flows down a pipe which tapers from 200 mm diameter to 125 mm diameter at the lower end. The difference in height between the two ends of the pipe is 4.0 m and the rate of flow is 1.50 m3 min-1. Calculate the pressure difference between the upper and lower ends of...

I'm looking for a way to detect water flow through a pipe. For example, I want to detect when a toilet flushes or leaks. I'm looking for a way to detect this that doesn't require anything submerged in the tank or inserted into the water line. I really just want to know that water is flowing...

Any tips for solving this would be greatly appreciated. Thank you all for your time and help The schematic of the problem is in the attached PDF PROBLEM INFORMATION I’m trying to determine the equations to solve for the conditions at 1, 2, and 3 when they are at a given length in their...

Outer dia=25mm,Inner Dia=24mm,Length=84,Normal innlet pressure=6 bar,Normal inlet temp=150°C,Max innlet pressure=11.5 bar,Max innlet temp=230°C ,Mass flow rate=4 kg/min, what is the Outlet pressure&Temp?.Which formula I have to Use.Pls Help me

Homework Statement A motor of power P is used to deliver water at a certain rate through a given horizontal pipe. To increase the rate of flow of water through the same pipe n times, the power of the motor is increased to P1. The ratio of P1 to P is? The Attempt at a Solution Let the...

Homework Statement Consider a water pipe that tapers down from a diameter dA= 5.0 cm at end A to a diameter dB = 2.5 cm at end B. At each end a vertical pipe that is open to the air at the top is attached to the pipe as shown in the Figure. (Not to scale, the pipes are much taller than shown.)...

Air flow in shop is through 1/4" hose. pneumatic motor has 1/2" inlet plus the tubeing to and from valve is also all 1/2" tube. what would be a general equation to model the pressure loss or increase to the motor. Shop air: 80psi 60cfm

A roof drain leads to a pipe that lies horizontaly in the roof's insulation layer which in turn lies on top of a 26cm concrete slab. On top is the waterproof membrane. The area underneath the roof is room temperature. The question is this; is it necessary to insulate the pipe itself to prevent...

Homework Statement Through a pipe made of aluminum, length of 1m which outer radius is r1=3,5 cm and inner radius is r2=3 cm flows a fluid with temperature of t1= 30 °C. How much heat does get lost through the walls of the pipe, in \tau=3h if the temperature around the pipe is 20 °C. Heat...

Homework Statement I have a pipe with a capacity of 1.5 liters. Half of the pipe is filled with water and the other half air. The pressure in the pipe will be pumped to a certain value then the valve will be released. I want to determine the speed of the water as it leaves the pipe...

The figure shows a pipe cutter clamped on a pipe. 3 Forces are acting on the pipe. These forces must be identified. These forces have different directions. The pipe is estimated to be in an equlibrium state of force , so it does not break the pipe, instead it holds the pipe tightly. I will...

Hey guys, i want to ask about what the effect of inserting obstacle to the velocity profile of a pipe? I mean when i insert a cube obstacle inside a pipe, how the velocity profile look like? let's say the velocity profile is in laminar flow. Thanks

Homework Statement Given two statements: Statement 1: Narrower the open organ pipe, higher will be the pitch. Statement 2: The frequency of open organ pipe depends on its radius. (1) Both statements statement 1 and statement 2 are true and statement 2 is reason for statement 1...

This is not a homework problem but I'm going to try and present it like one. 1. Water is flowing through a horizontal, open-ended pipe, of constant diameter. A pump is mounted upstream and the water flows through the pipe. The pump supplies a gauge pressure of 20 psi and the flow rate is 8...

Homework Statement You have a stopped pipe of adjustable length close to a taut 85.0-cm, 7.25-g wire under a tension of 4150*N. You want to adjust the length of the pipe so that, when it produces sound at its fundamental frequency, this sound causes the wire to vibrate in its second overtone...

Dear Experts, I was looking at Venturi effect and a question popped into my mind. When I use a water hose and turn on the tap, the water rushes out of the hose. If there is a break along the hose, eg. a small puncture, some water would also leak through this hole am i right? At least this...