According to Gasgoo’s understanding, the Volkswagen Racing Team managed to win the race on the 24th of this month. To set a new record in the event, there must be a breakthrough in technology. Volkswagen uses two electric vehicle chargers for its I.D. Volkswagen Racing Team also provides an air cooling system for the battery to ensure that the ambient temperature around it is 86℉. The speed of the fan is smaller to ensure that it consumes less power while meeting the 20-minute charging time required by the event.
In addition to high-performance on-board batteries, the Volkswagen Racing Team also needs to adopt Innovative way to generate the electricity needed to charge electric vehicles. Because a track is temporarily circled at an altitude of 2,800 meters, it means that it is difficult for the team to provide suitable charging equipment for the vehicle on site, such as the conventional charging devices required by the Volkswagen Racing Team. However, unlike conventional generators, the fuel used by this device is glycerin (glycerol) instead of diesel.
Introduction to glycerin:
Glycerin (glycerol) is a type of sugar alcohol It can be obtained from the waste product of biodiesel production. It does not produce harmful tail smoke or residue when burned. It is also known to be used as automobile and aircraft fuel. As well as antifreeze in oil fields, it is also widely used in medicine, coatings, food, cosmetics and other industries.
Physical properties of glycerin:
1. Appearance: Colorless and odorless viscous liquid, with Sweet taste;
2. Boiling point (oC, 101.3kPa): 290, 182 (2666pa);
3. Melting point (oC, pouring point): 20;
4. Relative density (g/mL, 15/15oC): 1.26526;
5. Relative density (g/mL, 20/20oC): 1.2613;
6 .Relative density (g/mL, 25/25oC): 1.26170;
7. Relative vapor density (g/mL, air=1): 3.1;
8. Refractive index (15oC): 1.47547;
9. Refractive index (n20oC): 1.4746;
10. Refractive index (n25oC): 1.4730;
11. Viscosity (mPa·s, 20oC): 243;
12. Viscosity (mPa·s, 25oC): 56.0;
13. Viscosity (mPa·s, 30oC): 18;
14. Viscosity (mPa·s, 50oC): 18;
15. Flash point (oC, closed): 177;
16. Fire point ( oC): 523 (on Pt); 429 (on glass);
17. Heat of evaporation (KJ/mol, 55oC): 88.17;
18. Heat of evaporation (KJ/ mol, b.p.): 61.09;
19. Heat of formation (KJ/mol, 15oC, liquid): 669.05;
20. Heat of combustion (KJ/mol, 25oC, liquid) : 1656.42;
21. Specific heat capacity (KJ/(kg·K), 15oC): 2.46;
22. Electrical conductivity (S/m, 20oC): 1.0×10- 8;
23. Thermal conductivity (W/(m·K)): 0.29;
24. Vapor pressure (kPa, 125.5oC): 0.13;
25. Body expansion coefficient (K-1): 0.000615;
26. Solubility: able to absorb hydrogen sulfide, hydrocyanic acid, and sulfur dioxide. It is miscible with water and ethanol. One part of this product can be dissolved in 11 parts of ethyl acetate and about 500 parts of ether. It is insoluble in benzene, carbon disulfide, chloroform, carbon tetrachloride, petroleum ether, chloroform and oil. It is easily dehydrated and loses water to form diglycerol and polyglycerol. Oxidation produces glyceraldehyde and glyceric acid, etc. Solidifies at 0°C to form flashing rhombic crystals. Polymerization occurs at temperatures around 150°C. Incompatible with anhydrous acetic anhydride, potassium permanganate, strong acids, corrosives, fatty amines, isocyanates, and oxidants;
27. Relative density (20℃, 4℃): 1.2613;
28. Relative density (25℃, 4℃): 1.255130;
29. Critical temperature (oC): 576.85;
30. Critical pressure (MPa): 7.5 ;
31. Eccentricity factor: 1.320;
32. Solubility parameter (J·cm-3) 0.5: 34.315;
33. van der Waals Area (cm2·mol-1): 7.650×1010;
34. van der Waals Volume (cm3·mol-1): 51.360�
