Air

The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases. | Review and cite AIR protocol, troubleshooting and other methodology information | Contact experts in AIR to get answers

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Questions related to Air

Flow rate for maintaining vacuum ?

I have a container of volume 15 liters . It is connected to another container having volume 5 liters with the help of Stainless steel pipe and solenoid valve is installed in the pipe to prevent...

20 January 2022 8,461 1 View

How much moisture can you introduce to a system with gas bubble through the water and goes into the system?

Hello Friends, I have a question that is stated in the title. I saw many papers trying to introduce moisture in a system by bubbling the air through it first. How much exactly moisture is...

10 January 2022 8,038 4 View

Poisson Boundary conditions for Image analysis?

I have shadowgraphs of plasma filament formed in air by focusing a femtosecond laser and I am trying to solve for refractive index change in the region using the shadowgraph. The contrast value at...

28 December 2021 3,733 2 View

How to insert air sensitive solid material in a round bottom three neck flask?

I am using an air sensitive solid compound in my experiment. the solid compound is sealed and labelled "air sensitive, Argon charged". I want to know 1. how to insert it in the flask without...

25 December 2021 7,094 6 View

How can I solve the problem of the high resistance of compact TiO2 and mesoporous TiO2 layers in perovskite solar cells?

I prepared perovskite solar cells (Glass/FTO/compact TiO2/mesoporous TiO2/Perovskite/spiro/Gold) inside dry air glove box. The best obtained efficiency was 6.6% which is very low. The resistance...

12 December 2021 1,655 3 View

Will nodal seismometers respond to air waves?

The nodal seismometer(ZLAND) with a sampling frequency of 1000 Hz is buried in a shallow hole and the upper of ZLAND is exposed to the air. The seismic signal is excited by manual hammering at a...

11 December 2021 652 4 View

How to estimate the concentation of ambient coarse particular matter (PM2.5-10)?

When I read papers about health effects of ambient air polluatants, I meet a question. We have the data on ambient PM2.5 and PM10 concentrations from air monitors, how to estimate the...

09 December 2021 7,996 5 View

Is there any way to identify the generation of formaldehyde?

Hi! I'm studying on the mechanism of one reaction. I think formaldehyde is generated as byproducts during the reaction So, Identification of formaldehyde is a strong proof for mechanism that I...

07 December 2021 8,617 6 View

How to determine the proportion of water in air at 1200 °C?

I would like to perform high temperature oxidation experiments in air. If I understand correctly, the amount of water vapor in the air has a great influence on the oxide scale growth. Can anyone...

06 December 2021 5,363 4 View

How to clean glassware for GC/MS?

Hello all, I have some microvials that go into liners for TDU analysis. They have been sitting in open air for a while now. I want to bake them to make them clean for the GC analysis. Is there a...

24 November 2021 4,611 4 View

How do you go about loading a TEM sample into the holder under anoxic conditions without a glove box?

I'll soon be working on a project that involves nanoparticles which need to be under anoxic conditions. My collaborators are preparing the samples in an inert glovebox at another institution and...

18 November 2021 4,986 3 View

Why my results change when I use a finer mesh?

hi. I have a problem in my simulation work. I use flow-3d for simulating a surface vortex with an air core in a pipe-tank system. I have been successful simulating the vortex with 1cm mesh size,...

16 November 2021 9,886 8 View

How to determine precipitation type?

Hello, I am working on a precipitation analysis and have data for two rain gauges. I also have air temperature. What is the best way to determine precipitation type? What is a good temperature...

11 November 2021 913 8 View

How to maintain 60% of capacity field in soil during incubation in a heated room at 35°C ?

Since the air will be pumped from the chamber to perform a GC to determine the CO2 concentration, we will need to add "dry" air to the chamber to maintain the pressure. However, this dry air may...

20 October 2021 2,298 4 View

Computational Fluid Dynamic CFD Ansys, anyone has idea on how to stabilize the granular 2nd phase (fluidized bed) even with very low inlet velocity?

Eulerian Multiphase simulation, the simulation is simple a 2D tube filled with water (primary phase) and 5mm glass bead (2ndphase), the inlet boundary was set from bottom of the tube with constant...

16 October 2021 2,225 5 View

Predictive control algorithm for outdoor swimming pools and hot tubs, OpenFOAM or TRNSYS?

Hello, I'm about to start a project about designing an optimal heating algorithm for outdoor pools and hot tubs. The algorithm we are aiming for should take into consideration not only the...

11 October 2021 4,775 3 View

TRNSYS modeling a cooling coil?

Hi there, I am looking for tips and tricks on how to model a cooling coil

07 October 2021 779 1 View

Change in Surface Topography of Rough Copper Surface Over Time?

My current research is dealing with creating rough copper surfaces with certain attributes. Because the performance of the copper substrate is reliant on this specific surface topography, I am...

28 September 2021 1,414 3 View

Why air is not preferred instead of engines coolant in recovering engine waste heat by TEMs?

Greeting I would appreciate you if you help me to find the answer of this question: however ambient air is cooler than engine coolant but Why it is not preferred instead of engine's coolant in...

21 September 2021 6,565 5 View

When analyzing VOCs in the air, is a packed column better or a capillary one?

I am analyzing VOCs in the air and have a question about choosing a column for good separation of VOCs. I use GC-FID and inject 1 uL (split ratio: 1:10).

13 September 2021 9,615 10 View

What is the mechanism of absorption/desorption of O2/CO2 in water after the saturation point?

I have two questions. I would appreciate it if anyone can help me with these questions: We have a raceway pond in which O2 is continuously produced due to the presence of algae. We know that the...

30 August 2021 2,101 5 View

Has anyone studied air constituents density profiles for a Tesla turbine ?

One of Nikola Tesla's greatest inventions is the blade-less turbine, referred to as 'Tesla turbine'. In the case that the driving fluid is air, I am interested on how air constituents...

24 August 2021 3,017 3 View

Inflow and Outflow Velocity and mass flow rate?

I have the the constants for air density, radius of pipe, Radius of the propeller, and the rpm of the propeller. I need to find the inflow air velocity and mass flow rate of the air and the...

20 August 2021 1,254 2 View

How can I calculate ppm of CO2 gas based on flow rate ratio?

According to literature, the solubility of CO2 in water is approximately 1500 ppm. Maybe, this means that no matter how much flow rate of CO2 into the open chamber filled with water, the...

11 August 2021 4,813 4 View

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