The overall volumetric energy density, including the thermal energy from Equation 1 and the oxidation of the resulting hydrogen (e.g., reacted or burned with oxygen), amounts to 23.5
Molten salt electricity storage technology converts electricity into thermal energy and stores it in molten salt through electric heaters. When needed, the stored thermal energy
Although its specific energy is a relatively poor 1.4 kWh/kg, meaning that for a given amount of energy, iron powder will take up a little bit less space than gasoline but it''ll be almost ten
2022年9月,靳开元博士加入华中科技大学能源与动力工程学院和煤燃烧国家重点实验室,主要研究方向包括:宽温域储热材料,储热材料的腐蚀行为与抗腐蚀技术,大温差高能量密度换热器
Australian scientists say they''ve made a "eureka moment" breakthrough in gas separation and storage that could radically reduce energy use in the petrochemical industry,
High-speed camera studies show that the gunpowder grains themselves burn comparatively slowly in a layer-wise fashion and suggest that the rapid propagation of the reaction from grain
Medieval gunpowder recipes of potassium nitrate (KNO3), charcoal (C), and sulfur (S8) were investigated by bomb calorimetry to determine their enthalpies of combustion and by differential scanning
Gunpowder has 3MJ/kg 3 M J / k g or so. It means you have to add about 35% 35 % to get the right estimate for the mass of equivalent gunpowder. If you could release the energy from the batteries very quickly, the explosion could be equally devastating as the corresponding gunpowder and TNT except that batteries can't release energy this quickly.
High-speed camera studies show that the gunpowder grains themselves burn comparatively slowly in a layer-wise fashion and suggest that the rapid propagation of the reaction from grain to grain is due to the emission of a hot spray of molten droplets of potassium salts.
Gunpowder recipes were prepared and used in a replica cannon that was manufactured and operated according to medieval records. Post-firing residues were collected from the bomb calorimeter and the cannon in efforts to further characterize recipe energetics using DSC.
One 15th century text notes that it strengthens all powders when it is added. (17) Indeed, as late as 1917, John Buxbaum filed a U.S. patent for mixing black gunpowder with spirits of camphor, presumably unaware that he was reinventing a medieval technique.
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