Science for the Public: Contemporary Science Issues Innovations 10/25/11 Professor Gang Chen, MIT explains several types of solar energy, with emphasis on a …
Video Rating: 4 / 5
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Science for the Public: Contemporary Science Issues Innovations 10/25/11 Professor Gang Chen, MIT explains several types of solar energy, with emphasis on a …
Video Rating: 4 / 5
The trouble with solar power (at least in places with a climate like the
UK) is that it is intermittent. And we have become so dependent on
continuous power availability, that we still need conventional power
sources as backup. Notwithstanding there have been very generous subsidies
to encourage take-up. But that was by a government more concerned with
meeting EU targets for renewable energy than with making sound economic
decisions.
I pulled one of those peltier devices out of a small fridge and smashed it
because I didn’t know what it was..
About $10 to $15 on eBay 🙁
Very stupid on my part.. This device is awesome
I know this is “old” news… but to me, (non-scientific) it excites me to
see this type of engineering and technology come together and become useful
to “end users” like myself. I would like to know more about where this
technology is today, and how to learn more about the marketplace of
purchasing this for domestic use. Any feedback from those who posted would
be helpful and grateful…
Dave.
great vid but the lady has no idea what he is talking about…
A Peltier device working in reverse,
SEEBECK my friend not seAbeck !
This has many applications, could cities with running water or nearby
aquifers, exploit the urban heat island effect to generate some power for
the city? Or what about the greenhouse effect of a solar oven. With light
control to heat the hot side the earth to cool the cold side. So many
applications that may exploit our current behaviors. All wasted heat,
especially that which is purchased, is a helluva waste of energy.
the idea is to increase the efficiency of the combined thermoelectric
system to convert the solar radiation into useful electricity.
tray to make semi conductor from 0 to 100 (i mean gap ) so apsorbes more
then 20 eficienty in avej panel from tin lair semi conducter tu fat greasy
leajer
Infra-red is high frequency sound?! – Or did he mean “analogous to high
frequency sound (because its a wave, so it will act in a similar way to a
sound echo, when sound hits an appropriate material)
A seabeck effect device then.
He said hot water to the house – so that’s 45C out, and 200C in. The
cooling is by ambient air which can be 28C on average hot days, and average
18C on cool sunny days, in areas like Spain, Forida and Israel where there
is a large population and abundant sun power.
The key thing for this to work in the temp differential. Their innovation
of putting a thermoelectric inside the heat collector is great where heat
is trap in the glass collector. but he didn’t explain how the cooling on
the other side is implemented. Only heat will not work. One side should be
hot and cold on the other. Do the person who posted this video have the
professor’s email address?
His data is old. It’s 2013 we are now approaching $1.00 to $1.50 a watt, PV
module prices and installation costs are coming down. He is looking at PV
as though it isn’t, and won’t benefit from new technology, is the cost of a
new TV going up? The challenge of the 21st Century is not creating energy,
it is storing energy. We are creating tremendous energy. I make more from
PV than I use. Also, his heat tube has cool water entering, lower temp
differential, less power – Carnot.
@7:15 One watt per year = 2 kilowatt hours? First of all, what is a “watt
per year?” That is a meaningless physical quantity. Does anyone actually
know what he’s getting at? A continuous power output of one watt over a one
year period would produce 8.76 kWh of energy. Divide by two if night time
is a factor. Maybe it’s less because of the angle of the sun throughout the
day. That’s the best I can figure.
i wanted to use one of them thermo cells on my cpu a few years back but i
could never come up with a way to get the hot side cool enough to make it
practical, also the other issue was the cold side would get so cold it
causes moisture to collect on the cpu
We could use Thermoelectric generators above our fire places that’s nearly
in every home or with wood stoves and pump any excess into the grid through
a grid tie inverter.