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Why you use 70 percent alcohol to sterilize laminar airflow chamber?
Sharmiss
100% alcohol is very volatile its get evaprated very quickly therefore we use 70% alcohol which gets less volatile and it sterilize the surface cotamination of the wiped object by dehydration.
vj sharma
Wiki User
∙ 14y ago
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What is a laminar cloud?
when the particles of the cloud do not intersect, when they move slowly without interference of other particles it is known as a laminar cloud
Why you determine reynold number in fluid mechanics?
Reynolds number tells you what the flow is doing. A Reynolds number of 0-2000 is laminar flow 2000-4000 is the transition (where both laminar and turbulent flow is possible) 4000+ is fully turbulent flow
What are the applications of circular orifice?
An orifice plate is a device used to measure the rate of fluid flow. It uses the same principle as a venture nozzle namely Bernoulli’s principle which says that there is a relationship between the pressure of the fluid and the velocity of the fluid. When the velocity increases, the pressure decreases and vice versa. An orifice plate is basically a thin plate with a hole In the middle. It is usualy placed in a pipe in which fluid flows. As fluid flows through the pipe, It has K.a certain velocity an a certain pressure. When the fluid reaches the orifice plate, with the hole in the middle of the fluid is forced to converge to go through the small hole, the point of maximum converyence actually occurs shortly downstream of the physical orifice, at the so called vena contracta point as it does so the velocity and the pressure changes. Beyond the vena contracta the fluid expands and the velocity and pressure change once again. By measuring the difference in fluid pressure, between the normal pipe section and at the vena contracta, the volume metric and mass flow rates can be obtained from Bernoulli’s equation. By assuming steady-state, compressible, laminar flow in a horizontal pipe negligible frictional losses, Bernoulli’s equation reduces to an equation relating the conversation of energy at two points in the fluid flow or V1=Q/A1 & V2=Q/A2. Slowing for Q and introducing the beta factor β=d2/d1 as well as coefficient of the discharge Cd. And finally introducing the expansion γ to account the compressibility of gasses and the meter coefficient C which is defind as to obtain the final equation for the volumetric flow of the fluid upstream of the orifice. It we consider about the value of coefficient of velocity (Cv). It may be accurated due to the practical errors. In that case we had to control the over flow rate actually. The top level of a adjustable over flow pipe was decreased gradually. So we had to hold it during the experiment to make the head constant. There may be some errors in measuring time, also we calculated to value of the Q using the equation Q=V/t, the Q2=V2/t2. If there is any error in time. If will increase when “t” become “t2”. So then there may be errors in values of Cd of the first part of experiment. In practically orifice is used in channels, pipelines, canal or hydro power stations to act as a water controller. Mostly those orifice are used to in reservoirs and pipelines. It may be used for measuring the rate of flow out of the reservoirs or through a pipelines, orifice may be in the wall or in bottom of the reservoir or tank . The orifice equation describes the rate of flow of liquid through an orifice. The equation can be represented as: Q = Cd A\sqrt{2gh} where Q = flow (cubic metres per second) C(d) = coefficient of discharge A = area of orifice (square metres) g = acceleration from gravity (9.81 m/s) h = head acting on the centreline (m) For a circular orifice, the equation becomes: Q = Cd (1/4 \pi D^2)\sqrt{2gh} Typical values for the coefficient of discharge are: Sharp orifice: 0.62 Tube: 0.80
Is hydrogen more flammable than petrol?
Yes. However you should learn to use the correct term, inflammable. The word "inflammable" came from Latin inflammāre = "to set fire to", where the prefix in- means "in" as in "inside" (compare English "in flames"). But there have been instances of people thinking that this "in-" prefix means "not" as in "invisible" and "incombustible" etc, and thus wrongly thinking that "inflammable" means "cannot burn". To avoid this safety hazard, the shortened word "flammable" has come into use in recent years.Hence flammable can be hilariously described as: An oddity, chiefly useful in saving lives. The common word meaning "combustible" is inflammable. But some people are thrown off by the in- and think inflammable means "not combustible." For this reason, trucks carrying gasoline or explosives are now marked FLAMMABLE. Unless you are operating such a truck and hence are concerned with the safety of children and illiterates, use inflammable.
What is laminar air flow chamber?
Laminar Airflow describes the flow around an object such that the air stays "attached" to the surface. At higher airspeeds, the air become detached and turbulent. Thus a laminar flow chamber is one where airfoils or model airplanes are tested at low airspeeds and especially airspeeds less than Mach 1.0.
What is the Role of laminar air flow chamber in sterilization of mushroom?
The laminar air flow chamber is a way to provide a sterile work area. This lowers the possibility of contamination while working with your cultures or fungi.
What is up-wash and down-wash in aerodynamics?
Upwash is the relative laminar airflow blowing fron underneth the wing which at the trailing edge moves upwords where as downwash is the laminar airflow blowing from the top of the wing moving downwards at the end of the trailing edge,,,,when they meet with each other ,it gives rise to vortices or eddis.
Which solution is recommended for cleaning a laminar flow hood?
isopropyl alcohol
How do you make a hovercar?
the laws of laminar airflow prove hovercar building to be difficult. The closest thing to a working hovercar at the moment would be a helicopter with huge wheels.
Difference between laminar air flow and reverse laminar aire flow?
difference between laminar air flow & reverse laminar air flow
What is turbulent vs laminar flow?
An air plane wing or anything that reduces drag like an arrow,dart, or even fish. Other examples could be the fins of dolphins, blood through arteries, water in a tube. Just remember that laminar flow is flow in which the fluid flows smoothly without much resistance. The fluid pretty much travels in straight or almost straight lines.
What are flow patterns around a stationary object in laminar flow?
This question is its own answer. The flow patterns in laminar flow are laminar.
When was Laminar Flow - album - created?
Laminar Flow - album - was created in 1979.
What can be used to define laminar flow?
Laminar flow can be defined by the help of Reynold's number that can be determined by conducting experiments. A Reynold number <=2000 indicates that the flow is laminar.
What is the effect that radius changes have on the laminar flow of a fluid?
Laminar flow is the free-flowing blood in the middle of the vessel. Therefore, larger the radius of vessel, more the laminar flow. Smaller the radius of vessel, lesss the laminar flow. Laminar flow is directly reltated to the radius of a vessel.
Why is no obstruction important for air flow techniques?
The laminar flow hood depends on the laminar air flow to sweep away pathogens from the hood. If there is obstruction, the laminar air flow pattern will be disrupted. The laminar air flow will then change to turbulent air flow.
