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As per second law of thermodynamics, all of the heat added to a system cannot be used to do useful work. Also, another version of second law of thermodynamics states that entropy of a system...

08 September 2019 4,696 11 View

Can a converging nozzle be designed which decreases the liquid pressure below its vapour pressure resulting in evaporation of liquid?

A converging nozzle increases the flow velocity and decreases the static pressure as per Bernoulli equation. Can a liquid flow through a converging nozzle result in static pressure below the...

06 July 2018 2,596 6 View

Is cyclopropane soluble in water?

Cyclopropane is a non-polar hydrocarbon. Why is it soluble in polar solvents like alcohols and ethers? Is it also soluble in water? Is it more soluble in water as compared to hydrogen sulfide?

02 March 2018 5,193 4 View

What is the working principle of expansion valves used in refrigeration industry?

We are pumping liquid through a pipe. After a pipe length, the flow area of pipe is reduced. As per bernoulli's equation, the velocity of flow will increase and pressure will decrease. In case the...

09 October 2017 3,765 1 View

What is the eutectic composition and eutectic temperature of various salts and sugars in water?

10 November 2016 2,432 0 View

How is the freezing point of brine effected by presence of organic compounds like methane, ethane and propane and compounds like H2S and CO2?

Freezing point of eutectic NaCl brine is -21 C. How is the freezing point temperature effected by presence of organic compounds like methane, ethane and propane and compounds like H2S and CO2? At...

01 January 1970 5,380 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

Modeling viscosity using model of Chung?

Hello, As part of simulation of gases mixture and water, I need to calculate viscosity of the fluid components and I am using relationships proposed by Chung et al. (1988). The irony is while I...

25 February 2021 8,053 5 View

What is the suitable range of Sulfur content and Viscosity of Heavy fluid Oil that used in Kiln?

What is the disadvantages of high sulfur content to the ceramic burning process? and what is the effect of outranged viscosity?

24 February 2021 8,219 2 View

How can Gamma Ray API units be converted to CPS (counts per second)?

Oil and gas companies run gamma ray tool and take readings in API units while Gamma ray is also noted in cps, so how these units can be converted into each other?

24 February 2021 7,545 2 View

How to remove compound ( Europium complex ) from paraffin oil?

How can I remove my compound from paraffin oil? Mistakenly my compound fell in an oil. Compound = Europium complex

22 February 2021 5,667 2 View

When I mix oil and NaOH solution, Why solid layer in the surface is formed?

During my trial for lubricant oil re-refinery process, I use NaOH as coagulant agent. After overnight of gravity settling, a solid layer in the surface was form. what product is that? since the...

22 February 2021 2,116 4 View

The type of filter paper used to filter an epoxidized oil (the mixture is an epoxidized oil with magnesium sulfate) ?

I have a mixture of epoxidized oil and magnesium sulfate wich type of filtre paper should i use

21 February 2021 3,944 3 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

How to determine number concentration of polymer solutions using viscosity experiment?

I have synthesized PNIPAM (Poly (N-isopropylacrylamide)) microgels, which are copolymerized with oligo-ethylene glycol based comonomers. I have to determine the exact number concentration for each...

19 February 2021 5,205 5 View