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In North America, gas stations offer two types of diesel fuel – according to ASTM D975 [5] these are named No. 1 and No. 2 fuel. No. 1 fuel (similar to kerosene) has a natural CFPP of -40 °C but it is more expensive than No. 2 fuel. Adding No. 1 fuel will lower the CFPP of No. 2 fuel – adding 10% will lower the CFPP temperature by about 5 ...
For the petroleum product to flow again, it needs to be brought above the gel point temperature to the ungel point, which is typically near its pour point. However, without stirring the paraffin waxes may still remain in crystal form so the fuel may have to be warmed further to its remix temperature to completely re-dissolve the waxes.
When the temperature is below 0 °C, the dew point is called the frost point, as water vapour undergoes gas-solid phase transition called deposition, solidification, or freezing. In the petroleum industry, cloud point refers to the temperature below which paraffin wax in diesel or biowax in biodiesels forms a cloudy appearance.
Diesel fuel has many colloquial names; most commonly, it is simply referred to as diesel.In the United Kingdom, diesel fuel for road use is commonly called diesel or sometimes white diesel if required to differentiate it from a reduced-tax agricultural-only product containing an identifying coloured dye known as red diesel.
Freezing temperatures from a harsh arctic blast are expected to affect nearly 300 million Americans across most of the continental U.S. in the coming days, according to the National Weather Service.
The test is important in relation to the use of additives that allow spreading the usage of winter diesel at temperatures below the cloud point. The tests according to EN 590 show that a CloudPoint of +1 °C can have a CFPP −10 °C. Current additives allow a CFPP of −20 °C to be based on diesel fuel with a CloudPoint of −7 °C.
The RAC said major fuel retailers are refusing to cut pump prices in ‘any meaningful way’ despite wholesale diesel costs falling. Diesel drivers ‘not benefiting from fuel duty freeze’ Skip ...
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