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# Formula for Heat loss in a pipe?

# What is the formula to find pressure loss in fire fighting pipe lines?

The British fire and rescue services use the following formula for calculating the pressure loss due to friction in firefighting hose: Pf = 9000 f l L2 / d5 bar … where Pf is the frictional loss of pressure, in bar f is the friction factor f = 0.005 for 70 mm or 45 mm hose f = 0.007 for 90 mm hose (for 90 mm hose it is higher to allow for losses in the couplings, which are but 64 mm diameter) l is the length of the hose line, in metres L is the flow rate, in litres/minute d is the hose diameter, in millimetres The formula is approximate, and relates to internally lined hose in 25 metre lengths. You will find the formula in the old Manual of Firemanship, Book 7, Hydraulics, pumps and pump operation. David Hayward, former MIFireE

# What is the formula for LPG flow in a pipe?

How to convert the volume of steam of LPG to gas mass

# What is heat loss formulae of water flow through PPR-C pipe line?

you have first to know the thermal conductivity of PPR that you are dealing with. normally, this is in range between 0.1 to 0.24 W/MK .then you apply this formula Q(IN WATTS) …=Thermal Conductivity/MK)*A( surface area for the pipe M2 )temperature difference between fluid inside pipe and temprture of pipe surface K)/(thickness of the pipe M)

# What is heat number of pipes?

It is a number that allows the pipe to be traced all the way back to the metal it was made from, important for quality control.

# What is a heat no on pipe?

Used for inspection. Heat numbers make it possible to trace pipe from spools fabricated on a job to material documentation from a given melt. The matching documents will tell …when and where the pipe was made, the material used and the pipe grade etc.

# What is the formula to layout pipe miters?

There is no exact formula to lay out pipe miters, but there is information that must be known to calculate the layout. This includes the diameter, wall thickness, angle, a…nd offset.

# What is the Formula for the weight of a pipe?

wt=volume x density of material...

# Is precipitation heat gain or heat loss?

heat loss

# What is the formula to layout pipe saddles for joining pipe at angles?

I edited and uploaded a program I wrote to calculate pipe saddle layout, pipe miter layout, and to calculate running offsets for piping runs. I have used similar programs in t…he past to get information to pipe fitters. I am using and evaluating a conversion program that limits what I can upload during the free trial period; so the sheets may be a bit awkward to use....let me know. Those of you who use the method of dividing a pipe in 16-divisions will note I have added 64-division points should you want to use these; the 64-divisions would be better to use if you were making a saddle template for larger pipe or for a saddle with a shallow angle. (I moved this to 'www.pipesaddlelayout.com) Let me know if it works for you or what seems confusing. Dave

# What is the formula for profit and loss?

I have a question. If two persons A and B got the profit of 9600 and they shared the profit in 5:7 ratio. then what is the share of A. Give me the step by step solution. first… i want to tell u that u wrote question in the answer coulumn well the answer of ur question is ; the sum of the ratio is 5+7=12 share of A =5/12 MULTIPLY BY 9600 = 4000 share of B = 7/12 multiply by 9600 =5600

# What is the formula of finding the circumference of the pipe?

diameter times 3.14159

# What is the formula for heat loss calculation in insulations?

Answer http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatcond.html

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In Technology

# Why do pipes rattle when heat is turned on?

Answer Pipes rattle when heat is turned on because metal expands when heated up

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# What is the formula for water flow in a pipe?

- volumetric water flow - liters per second (L/s) A_*_c_/1000_=_vf">A * c /1000 = vf A = Inside area of the pipe (cm2) c = Velocity of water (cm/s) vf = Water flow… (L/s) Or - mass flow rate - kilograms per second (kg/s) m._=_ρ_*_c_*_A">m. = ρ * c * A m. = mass flow rate ρ = greek letter symbolizing density. Water's density is 1000kg/m3 Remember to put all units correctly (kg, m, s) to get kg/s. ------------------------------------------------------------------------------ U can derive by experiment........ collect water per unit time.... change flow rate of water keep time const. then divide water collected in lit by time in sec u get volumetric flowrate.. and u can find velociy of waer if u know pipe dia by e formula: Q/v = (3.14/4) * d * d Q= vol. flow rate. v= velociy d pipe dia. If pipe dia is increase or decrese use coninuttyy eq. a1v1=a2v2

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In Science

# Is evaporation heat gain or heat loss?

For what? It requires a heat gain for the water, but a heat loss for whatever the water is in contact with.

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In Science

# What is heat gain and heat loss?

heat gain is when an object get hotter. heat loss is when an object gets colder.

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# What is the formula for section modulus of a pipe?

this app help you:"Miter Flat Pattern Design" in play.google.com play.google.com/store/apps/details?id=com.nasirstore.miter