EarthTechling - Latest Comments

Re: How a Hotter Climate Destroys Thermal Electricity Generation

jeffhre — Mon, 30 Oct 2017 19:20:51 -0000

The 5 Best Electric Chainsaws we'll be reviewing are:
WORX WG303.1 / WORX WG304.1.
Makita UC3551A / UC4051A.
Oregon PowerNow CS1500.
Remington RM1425 Limb N' Trim.
Sun Joe SWJ701E / SWJ698E.

Re: How a Hotter Climate Destroys Thermal Electricity Generation

jeffhre — Mon, 30 Oct 2017 19:14:11 -0000

"So, that leaves wind. Nobody is planning to run civilization only on wind. The future will be some mix of wind, solar, hydro, (biomass, geothermal, wave/tidal, demand management) and (declining amounts of )nuclear with just enough (storage and )natural gas to stitch them all together.

Re: Batteries In The Trash? For Shame!

Tailor Industries — Sun, 13 Aug 2017 19:00:53 -0000

Love-love-love the Kristy! Thanks for another wonderful giveaway!!
Thank you for this information post! http://www.Tailorind.com

Re: Solar Carports Power Buildings

Nathan — Thu, 13 Jul 2017 02:33:52 -0000

how can them cover the cost for build this carport? I m wondering.

Re: California: Ground Zero For Battery-Backed Solar

Jenny Jasmine — Mon, 03 Jul 2017 12:23:00 -0000

Want Solar Panels on Your Roof? Here's What You Need to Know: https://goo.gl/nmBWs5

Re: Volvo Loves Electric Vehicle Research Projects

adaaloindia — Thu, 15 Jun 2017 05:46:36 -0000

Wow.. great idea and reasearch by Volvo the world top leading automobiles manufacturing company . great to listen this news . Anyways great thanks to share this

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Re: Graphene Supercapacitors: The End Of Batteries?

wlexxx — Wed, 03 May 2017 14:28:58 -0000

ok so now it;s 4+ years later, where are my super batteries?

Re: Smart Car & Camper Combined To Create Super Efficient RV

Kirsten Durward — Wed, 26 Apr 2017 10:25:50 -0000

how do we convince a manufacturer there is a market for this? I want one!

Re: Wind Power Video: Look, Ma, No Blades!

rhoner — Sun, 19 Mar 2017 08:37:22 -0000

Coast of Maine = constant fog and wind.

Re: Smart Car & Camper Combined To Create Super Efficient RV

TMI Darling — Sat, 18 Mar 2017 23:02:29 -0000

Wow that is ridiculous.

We just drove and camped with a Smart Car Fortwo in Death Valley -

http://nynomads.com/2017/03...

It was tight to pack the vehicle with the items we needed to camp, but there's just enough to sit in the front and stuff a couple sleeping bags, a tent, some blankets, pillows, and a couple schoolbags of items in the back.

It held well enough on the paved roads.

Re: Are Hybrids Or Electric Cars Better For The Environment?

Noelle Hwang — Tue, 07 Mar 2017 20:58:15 -0000

Hey so I want to use this website for an essay but to cite it I need the publisher and author(s)

Re: Passive House: The Next Big Thing In Green Building?

Floor Sanding North London — Wed, 22 Feb 2017 15:46:23 -0000

While the LEED standard is a good standard to follow, to really achieve passive house status, you need at least a net zero energy consumption standard. Obviously, it is easier said than done, but the progress we are making in that area is increasing.

Re: Top 6 Common Myths About Smart Meter Danger Exposed

hoagy1 — Fri, 03 Feb 2017 06:15:05 -0000

I wouldn't trust any claims that say that these are safe either. Mobile phones are 'safe' because the tech companies paid a load of experts to say that they are safe. It could be decades before the true harmful effects can be seen, by which time it will be way too late for many people, the damage will have been done, and they will have made their money at the cost of our health.

Re: Would You Lease a Hydrogen Car?

Sheen — Fri, 27 Jan 2017 03:25:13 -0000

Can't wait to find it for sale somewhere like here: http://www.truck1.eu/delive...

Re: Hydrogen Fuel Cells Drive Big Hauling Truck

Sam Pyeatte — Mon, 19 Dec 2016 20:59:45 -0000

Most, if not all, industrial volume hydrogen gas comes from natural gas (methane), CH4. Using electrolysis of water is too expensive.

Re: Smart Car & Camper Combined To Create Super Efficient RV

Alena Radtke Gabriel — Mon, 19 Dec 2016 14:57:03 -0000

I would like to purchase one. I have a smart car now and camp packing with a tent etc. Really would love this RV with smart car! Please keep me informed

Re: Gas-Powered Plane Goes Silent As New Flying Electron

lr17 — Thu, 01 Dec 2016 22:25:22 -0000

I seriously doubt that it "went silent". Especially in pusher airplanes, the prop can make a lot of noise, and this little one was probably turning quite fast. Ever listen to a Long EZ or a PIaggio Avanti? I grant that it's probably not QUITE as noisy as it was.

Re: Self-Filling Water Bottle Concept Harvests H20 From Air

Johann De Beer — Fri, 21 Oct 2016 10:13:36 -0000

What happens if the humidity of the air is low?

Re: Top 6 Common Myths About Smart Meter Danger Exposed

annbw — Fri, 07 Oct 2016 14:59:25 -0000

In 2009, a Puerto Rico electric utility – – asked the FBI to help investigate widespread incidents of power thefts that related to its smart meter deployment. So when 0bama first handed out billions
to have the electric companies force smart meters onto American homes it was well known that smart meters are big cyber risk. The software needed to carry out the hack is freely available online. The hack does not damage the smart meter hardware or require its removal. Forcing smart meters on American homes will lead to even more $ billions of our tax dollars being wasted, pretending to stop hacking of wireless devices.... when we already had a safe, reliable, long lasting, secure analog meter...
As usual, the jokes on the American people.
The US government is following the same pattern as Puerto Rico. Puerto Rico, instead of replacing outdated equipment and lines, the money was spent to put wireless transceiver smart meters on all the buildings … and just recently the whole island had a 2 day blackout.

Re: The Mercury Myth: How Much Mercury Do CFLs Actually Contain?

Justen — Thu, 29 Sep 2016 10:04:32 -0000

Mercury doesn't kill you, generally. It causes neurological damage. The fact that tuna has a similar order of magnitude of Hg is not a reflection of Hg's safety, but a reflection of just how contaminated our tuna has become. A pregnant woman who eats more than 1/3 of a serving of tuna a week is exceeding the health risk level for them/their child. 1 serving a week for an adult.

Re: Portable Solar Chargers Explained

Pratiksha Medhane — Wed, 28 Sep 2016 02:55:11 -0000

Nice write up… Solar Charger Market is growing rapidly. Get its key manufacturers analysis @ https://goo.gl/qipThr

Re: Melancholia: The Psychology Of Climate Change Awareness

JJ — Sun, 25 Sep 2016 00:38:54 -0000

I wholeheartedly agree with your analysis. At first I interpreted the film as only a metaphor for individual death (and coping mechanisms), but on a second viewing I see the climate change analogy as quite apropos. My only point of disagreement is that with potential methane firestorms and hydrogen sulfide released by the oceans, "centuries" before our end may be far too optimistic.

Re: Renewable Microgrids: A Solution For Remote Communities

Scottish Scientist — Sat, 03 Sep 2016 12:01:09 -0000

but El Hierro, the smallest of Spain’s Canary Islands, is using an ingenious pumped hydro storage system to ensure consistent energy supply for their community. Excess energy produced by the island’s wind turbines is stored by using it to run pumps that carry water up to a height of 700 meters. The water sits in this storage basin in the crater of an extinct volcano until the wind dies down and the community needs to supplement the power supply, at which time the water is allowed to drain through a hydro turbine on its way back to the lower reservoir. In this way, no wind energy ever goes to waste.

The system developed by Gorona del Viento is not meeting its aims. I’ll explain why and what changes are required to the system to get it to work as intended.

https://scottishscientist.w...

Assuming El Hierro peak demand is 7.6MW

Put the 7.6MW peak demand into my recommendation equations

store energy = 1.11 days x 7.6MW = 8.436 MW-days = 202.5 MWh = 729 gigajoules

Assuming the head between the 2 reservoirs to be 655 metres, the volume of reservoir required is

volume = mass / density
volume = energy / (g x head x density)
volume = 729,000,000,000 / (9.81 x 655 x 1000)
volume = 113,500 m3

So the GdV reservoirs seem to be big enough and no change to the reservoirs is required.

Now let’s find the recommended annual maximum wind power

annual maximum wind power = 5.5 x 7.6MW = 41.8MW

whereas only 11.5 MW of wind turbine nameplate capacity is installed

I’m not sure what the annual peak wind power is now (8MW is the maximum MW plotted in figure 4 here) so let’s assume that 8MW is the annual peak wind power now.

Now – needed — factor increase compared to existing
8MW – 41.8MW – 41.8/8 = 5.2 times more wind power needs to be installed, to a total nameplate capacity of 5.2 x 11.5 = 59.8MW

Executive conclusion.

The El Hierro GdV wind turbines are under-powered by a factor of 5 compared to what will be needed for a successful system design to achieve 24/7/52 100% renewable on demand power.

The recommendation is that additional wind turbines be installed to a total capacity of 60MW.

Scottish Scientist
Independent Scientific Adviser for Scotland
https://scottishscientist.w...

Re: Prius 7 Person Hybrid MIA In America?

Joe — Thu, 25 Aug 2016 14:51:40 -0000

We got a V, but really wished we could have bought the 7 seater version in Canada. Seems like if you want a Toyota with 3 rows you have to get a Sienna or Highlander, which is more expensive and has way worst fuel economy. Too bad.

Re: DIY Prototype Proves Cheap Solar Air Conditioning Is Possible

My comments again — Sun, 24 Jul 2016 13:02:14 -0000

Low voltage wiring does not require a permit. When doing solar do everything like an RV or boat.

The only thing blocking solar is the stupid government making it a bitch to get it done.