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The cloud point of a nonionic surfactant or glycol solution is the temperature at which the mixture starts to phase-separate, and two phases appear, thus becoming cloudy. This behavior is characteristic of non-ionic surfactants containing polyoxyethylene chains, which exhibit reverse solubility versus temperature behavior in water and therefore ...
Below the cloud point the fuel begins to develop solid wax particles giving it a cloudy appearance. The presence of solidified waxes thickens the oil and clogs fuel filters and injectors in engines. The crystals build up in the fuel line (especially in fuel filters) until the engine is starved of fuel, causing it to stop running.
Cold filter plugging point (CFPP) is the lowest temperature, expressed in degrees Celsius (°C), at which a given volume of diesel type of fuel still passes through a standardized filtration device in a specified time when cooled under certain conditions. This test gives an estimate for the lowest temperature that a fuel will give trouble free ...
When a fuel is below its cloud point waxes or biowaxes form within the fuel, clogging fuel filters and injectors. The lower the cloud point, the colder temperatures the fuel can be exposed to without fear of waxy build up. Of the biodiesel alternatives pictured, LS9 biodiesel offers the lowest cloud point, increasing its uses within cold climates.
The cloud point (or gel point) can be adjusted down to −40 °C (−40 °F) [10] during the manufacturing process, compared to petrodiesel's cloud point of −30 °C (−22 °F), [failed verification] which could improve the cloud point of diesel when blended. The cloud point is the temperature when the wax precipitates out of the fuel in the ...
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The cloud point also occurs below −40 °C. Therefore, these fuels are suitable for the preparation of premium fuel with a high cetane number and excellent low temperature properties. The cold filter plugging point (CFPP) virtually corresponds to the cloud point value, which is why the value of the cloud point is significant in the case of ...
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