Sizing or size is a substance that is applied to, or incorporated into, other materials—especially papers and textiles—to act as a protective filler or glaze. Sizing is used in papermaking and textile manufacturing to change the absorption and wear characteristics of those materials.
Sizing is used for oil-based surface preparation for gilding (sometimes called mordant in this context). It is used by painters and artists to prepare paper and textile surfaces for some art techniques. Sizing is used in photography to increase the sharpness of a print, to change the glossiness of a print, or for other purposes depending on the type of paper and printing technique.
Fibers used in composite materials are treated with various sizing agents to promote adhesion with the matrix material.
I have an application where I need to size gears for a set of cylinders with different diameters, and the surface speeds of the cylinders need to match.
Does the ratio between gears have to equal the ratio between pitch diameters?
This is our first application where the diameters of the...
I am trying to get some help in sizing my exhaust pipe for my 1997 Pontiac Trans Am WS-6
Can anybody point me in the right direction for equations?
I pulled out my Marks handbook hoping it would help, but I couldn't find anything
I have been thinking of doing this as a gas dynamics...
Hi All,
Sorry for the cross post, I had an earlier version of this in Classical Physics which has errors. Please disregard.
Problem Description:
The drawing shows an adapter to secure a container to arms which connect to an off road moving dolly (not shown). A 6x6 beam has two arms (6"...
Problem Description:
The drawing shows an adapter to secure a container to arms which connect to a moving dolly (not shown). A 6x6 beam has two arms welded to the ends that support the container at the sides and two opposing arms (4" deep and 8" wide) offset 2' toward the center that connect...
I need to calculate the wire size for a Fan Coil Unit that uses 3.7kw @ 380v/3ph with a circuit of 70 meters one way.
Also the wire size for a Air Handler Unit that uses 5.5kw @ 380v/3ph with a circuit length of 24m one way.
Ok. So my crank pulley is 127mm o.d. which drives a supercharger pulley 73.27 mm o.d. to make 9 psi of boost.
The problem is, the supercharger puller is too small and causes the belt to rub. So i increased the supercharger pulley to 101.6 mm o.d. and now the it only makes 4.5 psi of boost...
Good day,
My question relates to the use of a pressure reducing station (pressure reducing valve) in a steam system. As those involved in the design know, pipe sizing is carried out starting with the furthest point (the most demanding point of consumption) and sizing shall start from that...
The Section modulus of a beam that I compute does not match wood design tables to determine the correct size of the wood framing member. Can anyone offer some insight?
I have to size a wooden beam. The span is 24 feet with a tributary area of 10.5 feet. The dead load value is 85psf, the...
I have Distribution board, Outgoing (D.B1)
But I got confuse for MCB sizing:
The busbar 400V, 125A, 50Hz, 4P, 10KA for 1Sec.
The part of Outgoing Rates as the followings:
Feeder-1: 2.5 KVA used 25A MCB 2P
Feeder-2: 3.5 KVA used 25A MCB 2P
Feeder-3: 2.0 KVA used 25A MCB 2P
Feeder-4...
When I write something in LaTeX, I always try to create shortcuts for things I use a lot, so my code looks has semantically meaningful constructions like \[\CountableUnion{U_n}{n}\] instead of complicated strings of symbols like \[\bigcup_{n=1}^{\infty}U_n\], for example. I have run into a...
if we have a pipe system like in the figure below where a pump exist in the system in order to deliver 200 gpm of water from the tank "A". we need to deliver 150 gpm from "C" and 50 gpm from "D" usually we use the pipe flow chart of william hazen in order to size each pipe according to its flow...
If we have an open pipe system that will deliver in total 200 gpm divided in 2 pipes
the first pipe is 50 gpm and the second is 150 gpm , the 2 pipes have the same length , if we want to size the pipes where both pipes will have the same diameter , if we do that through william hazen equation...
Homework Statement
this isn't a homework problem, but i guess it's a basic enough question that i figured i'd post it here.
okay, so I'm trying to figure out how big of a winch to buy for a very large tow truck i am building. winches are rated based on how much they can pull. eg. a...
Hey,
I am trying to determine the importantance and difference of fouling in sizing the evaporator and condenser in a Refrigeration cycle?
Thanks,
Alexisonsmith
Can anyone please size a heater battery for me? On a supply and extract heat recovery air handling unit. (50% efficient for heat recovery)
Outside temperature -2 degrees C
Room temp/Return air - 21 degrees C
Air voume - 1.3 m3/sec
Boiler flow and return - 80-60 degrees C.
I have been...
General Questions About "sizing" Structural Beams.
Hello Guys. I would like to know where I can find high quality info on which types of beams to use for certain applications. Say, for example, a 100 foot span which is supposed to hold 100 tons at the center, or cantilever, and so on. I know...
This may seem like a stupid question, but what is the relationship to flow and pressure in a pump to flow and pressure in nozzles. Specifically i have 5 nozzles that i am pumping into rated at 3000 Psi @ 0.84 GPM, what do i size my pump to? Do i need a pump rated for 3000 Psi @ 4.2 GPM or do i...
I think my forum name gives it away, I am a home snow maker looking to make a new snow gun and I need a little help from you guys.
Here is my dilemma/situation. I have water flowing at 350 psi, into a pipe that has 100 psi, a differential pressure of 250 psi. I only want .06 gallons per...
Hello,
I am trying to work out what cable to supply a 3 phase motor with. I am using data from the manual that tells me:
for 34A max load current use 6mm2
The drive output I am using has an Imax(cont) = 34A and an Imax = 52A.
Is ir correct to use 6mm cable, i.e. should I be using the...
I recently started doing research to build one of these (popular?) two-wheeled balancing things. (A segway clone)
I don't know how to calculate the proper size motors (a pair of motors) for this. I know you have to consider the torque and rotational speed required to size the motor.
Desired...
I am using a digital genset controller that to run and protect a generator. This controller has, in addition to other functions, timed overcurrent protection (1-30 seconds). The controller uses 5 amp secondaries. The generator is 83 amp. The 100 amp breaker I plan to use has a...
Senario-1
I have a tank of Volume = 4.19 Cubic meter which is filled with water. I want to empty the tank by giving a HP air blow at 10 Bar. How much air is required to empty the tank completely.
If someone can give any formula or any reference that can help me.
Senario-2
I have a...
Brief description: I have a three tank system (A,B,C). Tank A is fitted with stand pipes with the over flow flowing down and then up through the bottom of a 1" bulkhead fitting and into Tank B. Tank B is approx. 12' x 2' x 12". At the end of Tank B is another 1" bulkhead fitting with the exit...
Hi
I need a software for designing airfoil that alows changing the choard size and printing. If you know any please tell me.
Btw do you know any refrence for low Reynolds number (about 50000)?
I want to choose NACA7610 for my glider but I don't know exactly how it behaves at low Reynolds...
Hi All,
I have a 10hp Petter diesel engine that i want to drive an AC Alternator--Generator 240v AC.
Is there an online calculator for this or can somebody help me size the correct KVA Alternator for it, i want to produce the maximum power i can with this engine to keep it loaded.
Thank You
I'm trying to solve a problem which involves the following scenario. Any help would be great!
A landing aircraft (mass 14 tonnes) is to be slowed from 300km/hr to 180km/hr in 3 seconds, by the deployment of two identical parachutes at its rear. Determine the diameter of each parachute. The...
Attempting to use the formula:
D = 1.72 (Tmax/σmax)^1/3
In my case I do not know σmax or at least how to calculate it from material properties.
Material is 1045
UTS 84800
YTS 74300
Tmax = 591.55 in-lbs
D = 1.72 (Tmax/σmax)^1/3
Any help would be appreciated.
Regards
The attachment shows an example from a book on how to size a hot water storage tank (for tap water). During the 24h period a total of 55 kWh is used. The red curve shows the variation in usage along the period. The slope of the green lines is determined by the heat source's power, in this case...
hello everybody,
in fact,im asking for a help in a matter confused me alot,its about how can i select the right (split,mini split,portable,window,etc) air conditioner,which is not central air conditioner.
im working now in a company and they size the air conditioner for the customer according...
Dear everyone,
would you be so kind to help me with the small problem, which you might find funny as well (or it's usual, banal?..).. the thing is that i currently work on my PhD, and want to increase the number of pages in easy way, you know.. in other words i try to enlarge the figures! o:)...
i'm designing a fire tube boiler. is there any standard for sizing a furnace. according to what criteria can we choose the length of fire tube boiler furnace
thks for your help
Hello everyone,
I'm having trouble with an application involving rotating a 10.8lb device through 60 degrees of rotation using a stepper motor (Hurst 4006-004: step angle .1 degrees, Output speed 3.33 rpm, rated torque at 175 pulses/sec of 162 oz-in). It appears that the motor is...
Hello,
I am trying to figure out how to calculate the diameter of an orifice for a pill loop in an oil heater and pump. The hot oil is used to heat fuel in a heat exchanger, and is driven by a positive displacement pump. There is a spill loop with an orifice plate, and the requirement is...
Hi, I am working on an EV and the problem is in sizing or selection of dc motors. I have to select few small PM DC motors instead of a big one, the purpose is to pull a wheelchair, I have the mechanical quantities with me required to turn a wheel:
Torque required is 43 N-m
Power required =...
Hi all,
I am curious to know if anyone can provide me with a formula or a rule
that sizes the circuit breaker so the circuit is protected during
inrush currents. The supply is 415VAC, 50Hz. The current comming from
the buildings main distribution panel is around 60 Amps. The...
I need to size a member to withstand large falling rocks, but it seems that if I do not know how far the rock travels after impact, I have insufficient information. I do not have the resources to test falling rocks on an array of members and then measure the distance traveled.
I need a basic...
For my Design of Machine Elements class this problem is being posed.
This is exactly as the problem is stated.
The torque on the 400mm -diameter shaft connecting the flywheel with the jaw mechanism should never go above 700kN m. Dimension a copper square tapered key so that the shaft is not...
I would like to get some opinions on secondary circulator and piping design for heating system.
System Description:
Two (2) boilers each one is 75% of building total heating load. Each with a secondary circulator pumping to a manifold into a primary loop. The return piping comes from a...
Hello I have an Electronic control unit supplying +5volts and 15mA to a Potentiometer. The control unit needs to have padding resistors that need to be sized correctly so the output of the potentiometer is 0.5 volts to 4.5 volts. Can anyone help me figure out how to size the potentiometer and...
Hello- new to the board and had a question for anyone that can help. I am trying to figure what size motor I will need for a project. My brother has built a custom motor cycle and to showcase it at the carshow we were going to mount the motor cycle on a platform and rotate it at approx. 1...