Questions tagged [liquid]

For questions about the specific properties of materials in their liquid states, and their engineering applications, such as in hydraulics, heating/cooling systems, and chemical reactions.

Filter by
Sorted by
Tagged with
0
votes
1answer
43 views

What is the function of this device in the middle of the man-made lake?

Can anyone identify what the blue and orange floating item with paddles is in this picture of what appears to be a Chinese fish or turtle farm?
1
vote
1answer
24 views

Will an electric water pump has slower flow if it must pump through a longer tube?

I am planning a series of ponds, where the first pond (near the source of electricity) has the highest water level, the water flows to the second, lower pond, via a small water fall, and to a third, ...
0
votes
1answer
57 views

How to get a wheel pump to deposit water near the top of the wheel?

Suppose I have a wheel, about 6 feet in diameter, with empty soup cans affixed around it, powered by a big windmill. This drawing only has four spokes, but there will be more: ...
-1
votes
1answer
41 views

Determine the length of the tube

I need to determine the size of the tube having the flow rate of the liquid (water) which is 5 ml/min and assuming the diameter of the tube is 4mm. How can i determine the size of the tube that takes ...
1
vote
0answers
18 views

Is it possible to use a laser push a 100 micron diameter droplet of water through a fine mesh?

Context I've had the thought of a printing device that uses a thin grid that has holes small enough to allow suspension of a water based ink above a sheet of paper using surface tension. I've ...
2
votes
2answers
36 views

In marker pens, why does the ink travel to the nib?

This question is specifically for felt tip pens and marker pens that contain a felt inner tube. The parts of the pen are: - the body case - the felt nib - the felt inner tube I do not understand is ...
1
vote
3answers
40 views

Is there a type of check valve that allows gas to flow in both direction but stops liquid from flowing back?

I have a pressure regulator to maintain a specified pressure in a vessel that also contains a liquid. The regulator can pressurize or relieve pressure of the vessel. I want to prevent the liquid from ...
0
votes
1answer
52 views

Liquid delivery to a pump based on viscosity

I have a tank that is filled with a viscous liquid (~3000 CPs). At the bottom of the tank there is a pipe that leads to a gear pump. There is 22" of pipe straight down from the tank followed by a ...
1
vote
0answers
19 views

Valve advice for chiller test rig

I am in the process of designing a chiller test rig, of which a very simplified diagram would be (the quick coupling might just be replaced by a non-return valve): I am struggling to find the type of ...
1
vote
1answer
43 views

Is there a male and female valve that is closed until connected together?

I'm trying to make a quick release male and female connector similar to the one shown here. One connector is attached to the bottom of a container filled with liquid. When it is not connected it is ...
2
votes
0answers
41 views

Liquid phase gas flow through valve

I have been trying to figure out how to calculate the required dimensions for liquid phase gas through a solenoid valve. Many companies (Swagelok, Bürkert, Asco) provide "Flow coefficient calculators" ...
1
vote
2answers
81 views

How to calculate change in pressure from LN2 state change (constant volume)

I am trying to calculate the increase in pressure caused by liquid nitrogen at the moment it changes from liquid to vapor within a closed, constant volume at atmospheric pressure. Do I need to include ...
0
votes
1answer
170 views

Which materials we can use for storing liquid nitrogen?

What are the materials we can use for the long-term storage of 30~liters of liquid nitrogen with composition and grade, along with the thickness of the sheet and storage capacity? Can we use any ...
1
vote
0answers
14 views

Shear between which two fluids is better for atomisation - liquid & liquid or gas & liquid?

In designing an atomizer which generates a spray of liquid, one can adopt atomisation through shear. Shear in the following cases are to be considered: stagnant Gas- moving Liquid: in this gas case ...
0
votes
1answer
125 views

How do I measure mercury in a graduated cylinder?

Convention says to measure at the bottom of the meniscus, but I think the cohesion/adhesion balance of mercury results in it "bulging out" Do you measure at the top of the bulge (near the center) or ...
1
vote
0answers
27 views

Overcoming gravity with fluid pressure

How would I determine if an upward flow of liquid at 100 bar forces a bed of porous solid upwards or flows through without affecting the same bed of material? Is it related to bulk density and pores?
2
votes
0answers
30 views

Finding liquid viscosity

I'd like to calculate the viscosity of a liquid in a container systematically (and feed the results back to a computer). I only have basic knowledge of physics and mechanics. I think that a motor ...
1
vote
0answers
22 views

Determination of delivery pressure from pump in my Parts Washer

We want to know how can we determine the pressure of the liquid at the delivery end of the pump. We have a centrifugal pump and a 2" pipeline at the delivery end. Pump delivery performance as per ...
0
votes
1answer
3k views

Can PWM be used to control the flow of a solenoid valve?

Most cheap pump can achieve, according to the Amazon page, around 5 PSI and I would need something a way higher that can still be controlled. I have this solenoid valve. Can I use pulse-width ...
0
votes
1answer
582 views

How can I improve water flow within this diagram?

I'm hoping I'm asking this in the right place. I'm trying to determine how I can improve the water flow within a project I'm working on. The flow starts out at the large water pump on the bottom ...
2
votes
3answers
729 views

Mirror-like reflective liquid crystal display panel

I can't find any information about this on Google, so I thought I'd ask it here. I am looking for a LCD Screen-like panel which uses a mirror-like liquid crystal so that I can make a pane of glass ...
1
vote
1answer
763 views

How to design spray nozzle (like in pulverizer) for 3d print?

How do spray nozzles work? How do they convert liquid to aerosol? Is it possible to print tiny spray nozzles from metal powder?
10
votes
1answer
951 views

What liquid crystals are used most frequently in displays?

Is there a specific chemical that is used frequently in the production of liquid crystal displays? During my internet research so far, it seems as if the specific chemical composition of the liquid ...
3
votes
2answers
220 views

What type of liquid flow control could this device use?

I am trying to figure out what kind of device is being used to stop and start the flow of liquid inside this device. Below is a link to the device. It looks too small to be a solenoid or a pump. How ...
32
votes
8answers
6k views

Is it possible to “pump” a powder?

Is it possible to "pump" a powder the same way liquids can be pumped? If so, what are the challenges? If not, what are some alternatives?