Hydrostor Wants to Stash Energy in Underwater Bags
spectrum.ieee.org2 pointsby EEGuy0 comments
"A single unit can integrate natural gas, solar panels,
wind turbines and batteries for storage," NRG says. "The
device is connected to the grid, which allows the two to
work seamlessly together. But if the grid's power goes
down, the engine's energy stays up. Any excess generated
energy can be sent back to the grid and may be credited
for your benefit."
.
Aside from the 15 kW maximum electrical output, output
can be used for space heating (35 kW or 0.12 MMBTU) or
hot water (200 gallons per hour at 70° rise). Additional
uses include snow melt and spa and pool heating.
.
The technical specifications are subject to change.
.
When necessary, the unit seamlessly transitions to a
backup power system, to maintain continuous operations,
NRG says.
.
The Beacon 10 unit's dimensions are 3 ft. 8 in. long by 2
ft. 6 in. wide by 4 ft.high, which NRG says is slightly
larger than a washing machine.
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The unit weighs 1,500 lbs.
* How it can be used: Disrupt the utility's business by selling or leasing equipment directly to end users, and by doing energy arbitrage with the utility. If the fuel cell heater is connected to the gas network,
a reformer initially converts the natural gas into a
hydrogen-rich gas.
Ah-ha: A "reformer": That would be a 'steam reformer[1]'. Quoting [1], here's what a 'steam reformer' does: At high temperatures (700 – 1100 °C) and in the presence
of a metal-based catalyst (nickel), steam reacts with
methane to yield carbon monoxide and hydrogen. These two
reactions are reversible in nature.
CH4 + H2O ⇌ CO + 3 H2
So there it is, the 'hydrogen-rich gas' is syngas [3], one mole carbon monoxide plus 3 moles hydrogen. Additional hydrogen can be recovered by a lower-
temperature gas-shift reaction with the carbon monoxide
produced. The reaction is summarized by:
CO + H2O ⇌ CO2 + H2
But the article uses just one word, 'afterburner' which tells me they're burning away the carbon monoxide: The researchers were particularly responsible for the
construction of the prototype, the design of the overall
system, the design of the ceramic components and the
development of the reformer and the afterburner.
Not clear is whether the CO goes /through/ the ceramic SOFC or is separated so it can /bypass/ the SOFC then get remixed with some H2 at the 'afterburner'. No mention of a 'separator', so perhaps the CO does go straight through the SOFC along with the H2 without ruining the SOFC. The original Etak Navigator was a specially-packaged Intel 8088-based
system with 256K RAM, 32K EPROM, 2K SRAM, and a cassette tape drive
on which digital maps and some of the operating system were stored.
The 8088 has a 16-bit address bus, thus can directly address only 64 K. Must have been some bank switching to get to the full 256 K RAM. This for all the code and geodata.
The result is as if your signal were played in that room ( with all its reverb ) or through that thing ( with its 'desirable'-or-otherwise characteristics modeled in its impulse response ).
Thinkable in 1962, but not thought possible. Now it's part of an industry.
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[1] https://en.wikipedia.org/wiki/Convolution_reverb
[2] http://www.openairlib.net/auralizationdb?page=1
[3] https://www.soundonsound.com/techniques/convolution-processi...