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2. Energy density Extended Reference Table - Wikipedia

   en.wikipedia.org/wiki/Energy_density_Extended...

   Superconducting magnetic energy storage: 0.008 [35] >95% Capacitor: 0.002 [36] Neodymium magnet: 0.003 [37] Ferrite magnet: 0.0003 [37] Spring power (clock spring), torsion spring: 0.0003 [38] 0.0006: Storage type Energy density by mass (MJ/kg) Energy density by volume (MJ/L) Peak recovery efficiency % Practical recovery efficiency %

3. Stored Energy at Sea - Wikipedia

   en.wikipedia.org/wiki/Stored_Energy_at_Sea

   Relevant technical parameters of a StEnSea unit: [7] Parameter Value Unit Construction depth 750 m Inner diameter of the hollow sphere 28.6 m Hollow sphere volumina 12,200 m³/unit Electrical storage capacity 18.3 MWh/unit Installed electrical capacity 5 MW/unit Specific storage capacity 0.715 kWh/m³ Units per storage farm 5-140 units

4. Energy density - Wikipedia

   en.wikipedia.org/wiki/Energy_density

   The same mass of lithium-ion storage, for example, would result in a car with only 2% the range of its gasoline counterpart. If sacrificing the range is undesirable, much more storage volume is necessary. Alternative options are discussed for energy storage to increase energy density and decrease charging time, such as supercapacitors. [9] [10 ...

5. Comparison of commercial battery types - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_commercial...

   by volume; year V V V MJ/kg (Wh/kg) MJ/L (Wh/L) W/kg Wh/$ ($/kWh) % %/month years Lead–acid: SLA VRLA PbAc Lead: H 2 SO 4: Lead dioxide: Yes 1881 [1] 1.75 [2] 2.1 [2] 2.23–2.32 [2] 0.11–0.14 (30–40) [2] 0.22–0.27 (60–75) [2] 180 [2] 5.44–13.99 (72–184) [2] 50–92 [2] 3–20 [2] Zinc–carbon: Carbon–zinc Zinc: NH 4 Cl ...

6. Density (computer storage) - Wikipedia

   en.wikipedia.org/wiki/Density_(computer_storage)

   Density is a measure of the quantity of information bits that can be stored on a given physical space of a computer storage medium.There are three types of density: length (linear density) of track, area of the surface (areal density), or in a given volume (volumetric density).

7. Orders of magnitude (data) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(data)

   The storage limit using the 48-bit LBA ATA-6 standard introduced in 2002. 1.6 × 10 18 bits (200 petabytes) – total amount of printed material in the world [citation needed] 2 × 10 18 bits (250 petabytes) – storage space at Facebook data warehouse as of June 2013, [11] growing at a rate of 15 PB/month. [12] 2 61: 2,305,843,009,213,693,952 ...