Category Archives: Physics

Gas Hydrate Desalination

Interesting way to desalinate salty water. Gas hydrate consists of only water and a gas, such as methane, the stuff of natural gas. When hydrates form, salts and other impurities are left behind. Hydrates were formed from water and carbon … Continue reading

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Oil Conversion

Here are some handy oil conversion numbers: one tonne of crude oil approximately 7.3 barrels of crude oil about 307 U.S. gallons of crude oil one barrel of crude oil 42 U.S. gallons of crude oil 159 liters of crude … Continue reading

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Oil Freezing Temperature

Oil freezes -18 Celcius (motor oil), diesel -30 C, Cuide Oil -31 F (-35 C) Kind of temperatures you’ll get with dry ice (-78°C) or even liquid nitrogen (-196°C) Olive oil: 6C (refrigerator temp) Sunflower oil: 17C Aviation gasoline: -60C … Continue reading

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Water Freezing Under Pressure

Water freezes at a temperature below 0 °C under a pressure higher than 1 atm (0.10 MPa). Consequently, water also remains frozen at a temperature above 0 °C under a pressure lower than 1 atm. The melting of ice under … Continue reading

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Phase Diagrams

Here is a phase diagram of Carbon Dioxide (CO2): Phase diagram of ice:

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Hydrostatic Pressure as a Function of Depth

The static pressure caused by a fluid varies with depth according to: P = ρ gh where: P is the pressure in pascals; 1 pascal = 1 newton /meter2 ρ is the density of the fluid in kilograms /meter3 g … Continue reading

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Subsea Sea Water

Seawater is denser than fresh water because of the salts’ added mass. The freezing point of sea water is about -2 ºC. Deep in the ocean, under high pressure, seawater can reach a density of 1,050 kg•m−3 or higher. From … Continue reading

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Density of CO2

Molecular Weight Molecular weigh of CO2: 44.01 g/mol Molecular weight of H2O: 18.02 g/mol My approximation of the Molecular weight of Sea Water: 17.387 g/mol (????).

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Physical Conditions Present a Mile Down in Seawater

Here is a great post from grolaw on alternet.org. For the original article click here. grolaw writes: One thing I’ve noticed is that very little is published about the physical conditions present a mile down in seawater. That environment is … Continue reading

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Carbon Dioxide CO2 Properties

Molecular Weight Molecular weigh of CO2: 44.01 g/mol Molecular weight of H2O: 18.02 g/mol Molecular weight of Sea Water: 17.387 g/mol (????) Solid phase Latent heat of fusion (1,013 bar, at triple point) : 196.104 kJ/kg Solid density: 1562 kg/m3 … Continue reading

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