[Home]  [Headlines]  [Latest Articles]  [Latest Comments]  [Post]  [Mail]  [Sign-in]  [Setup]  [Help]  [Register] 

Gxxgle's Censorious Urges are Playing a VERY DANGEROUS Game

Insider Blows Whistle & Exec Reveals Google Plan to Prevent “Trump situation” in 2020 on Hidden Cam

Breakouts, burns and zingers: What to watch in the debates

How Evil Wins: The Hypocritical Double Standards of Political Outrage

Cops Accuse Innocent Hospital Patient of Trying to Steal His IV Bag, Rip IV From Arm, Arrest Him

Georgia Woman who Spent Months in Jail Because Cops Thought Cotton Candy Was Meth Sues Police Department

Artist Sheefy McFly arrested by Detroit police — while working on mural for the city

NASA wants a kid to name the Mars 2020 rover

DEFINITIVE SLAM DUNK 9.11 VID (Posted by Gxxgle's most feared "Truther" YT'er)

Oregon Democrats Go Full Dictator

Evangelical leader fails to explain why Trump gets a pass but ‘character matters’ for Bill Clinton

Trump’s promise to ‘cure’ cancer if reelected shows show stupid he thinks his supporters are

CUBA 2.0 Russia warns build-up of US weapons near its borders risks repeat of Cuban missile crisis as Moscow warship docks in Havana

Knitting Website Ravelry Bans All Pro-Trump Content

Boxed in by Neocons and the Media, Will Trump Launch Iran War?

House Resoundingly Approves Broad Marijuana Federalism

'Burn that rag!' Activists to desecrate the flag at Trump July Fourth rally

Lies They Told Us: A Long History of Being Manipulated Into War

Google Censors Apollo 11 Moon Landing Hoax Videos and Articles

Elizabeth Warren Demands Reparations For Gay And Lesbian Couples

John Bolton Flies to Israel to Apologize for Not Bombing Iran, Says He Will Do It Soon

I think I got this figured out

The Fact That Americans Need To Be Deceived Into War Proves Their Underlying Goodness

Who is John Bolton? "Tough Guy," Vietnam Draft Dodger

Dr. Marijuana Pepsi Won't Change Her Name 'To Make Other People Happy'

LPD: Woman arrested for turning in husband's firearms to Lakeland (FL) police

A Dozen Cops Swarm, Arrest Man Because He Had an Air Freshener on His Mirror

NXIVM: Founder found guilty; ties to Clinton and other prominent Democrats

Revealed last secret of American Pie - pop's most enigmatic song: Drugs, Elvis, murders and how a lost verse sheds new light on Don McLean's hauntingly evocative lyrics...

Massive Fireball Rises Into the Sky as Blaze and Explosion Rock Philadelphia Refinery (Video)

Feds Say They Plan on Drug Testing Every Single Person Attending Burning Man

Vets Who Use Medical Marijuana Shouldn't Have to Give Up Second Amendment Rights

NY POST: 'Trump hints US will respond soon to Iran shooting down drone' (Trump and Iran both being baited into war by Globalist Warhawks)

'These People Aren't Coming From Norway': Refugees in a Minnesota City Face a Backlash

WHITE HOUSE INSIDER: War with Iran planned by Trump, to occur in the Fall of 2019

White House insider who predicted Iran False Flag, David Goldberg found dead in his New York apartment

Andrew Leahey & the Homestead - Airwaves

Police State-Conditioned Jury Acquits Cop Who Shot a Therapist for Helping Lost Autistic Man

Cops Fail at Window Tint Stop After Man Calls Them Out for Being ‘Above the Law’

Declassified U.S. Government Documents Claim The West Supported The Creation of ISIS

The Jackboots Are Coming: Mass Arrests, Power Grabs and the Politics of Fear

Homosexuals In Israel's Armed Forces

House Votes Down Amash's Attempt To Stop Warrantless FISA Surveillance

Forbidden footage of actual location of Red Sea Crossing & Mt. Sinai (*MUST-SEE! NOT Hype!*)

[From 1977] The 116 Planet Earth images NASA wants Aliens to see [Too pretentious, diverse, and anti-West even then?]

'Git-R-Done': Trump opens 1.4 million federal acres to hunters, anglers

Trump fills the Pentagon swamp

Why Avoiding the Cult of Personality Is Important

Bret Stephens, Warmonger

The War Hoax Redux


Status: Not Logged In; Sign In

Alternative Energies
See other Alternative Energies Articles

Title: Startup says it can make compressed-air energy-storage scheme dirt cheap
Source: ArsTechnica
URL Source: https://arstechnica.com/business/20 ... rgy-storage-scheme-dirt-cheap/
Published: Apr 12, 2017
Author: Megan Geuss
Post Date: 2017-04-12 11:30:56 by Tooconservative
Keywords: None
Views: 240

A Canadian company called Hydrostor has a new compressed-air energy-storage system that it says is half the cost of grid-scale batteries and on-par with adding a new natural gas plant to a grid.

The system, called Hydrostor Terra, uses electricity when it’s plentiful to compress air and send it underneath the ground into a specially-constructed tank. While the system is compressing the air, it also takes the heat generated by the compressors and stores it in a thermal management system. Then, when electricity is in short supply, the Terra system sends that compressed air back up from underground and heats the surfacing air stream using the heat that was captured in the compressing process. The heated air moves a turbo-expander connected to a generator, which creates electricity.

Hydrostor’s method of capturing heat from the compression process is what sets the Terra project apart from other compressed-air energy systems (or CAES systems). Traditionally, CAES systems burn natural gas to heat compressed air as it's brought up to the surface to make electricity. But burning natural gas detracts from the system’s overall efficiency and creates greenhouse gases. Hydrostor says Terra won’t burn any natural gas in its adiabatic system, that is, a system in which heat doesn’t leave. (Note that, a search of Ars Technica reveals five pages of results including the word "adiabatic," all of which pertain to quantum computing. Well, until today. Today we talk about energy.)

According to the Energy Storage Association, adiabatic compressed air systems can be up to 70 percent efficient, and a video provided by Hydrostor suggests its system has approximately 60 percent efficiency. Diabatic systems, where natural gas it burned to reheat the compressed air, are usually only 42 to 54 percent efficient.

According to a Hydrostor spokesperson, the company owns and operates the world’s only utility-tied adiabatic compressed air energy storage (A-CAES) system. That system has been in operation since 2015 on Toronto Island in Canada and has a power rating of 0.7MW. Because this system uses several underwater balloons to store the compressed air, it's in the process of being expanded to offer multiple megawatt-hours of energy storage. Hydrostor also has a 1.75MW, 7MWh A-CAES system under construction in Goderich, Ontario, Canada and is contracted to build another 1MW, 6MWh system in Aruba.

The Terra system is also different from earlier CAES systems in that Hydrostor and its partner engineering company, Aecom, build special underground tanks for the compressed air and pipe in water from an external source for the compressed air to displace. This helps maintain a constant pressure in the tank, which reduces risk of damage as the system is charged and discharged. Earlier systems generally tried to make use of existing geologic caverns underground or had to construct artificial caverns in salt deposits. Per Hydrostor's press release, "The Terra system, by contrast, can be deployed at any site within proximity to a body of water, including inner-city and urban areas."

Although exact pricing details depend on the project, UtilityDive noted in January that Hydrostor's systems cost between $1,000 and $2,000 per kilowatt to build, and the company's spokesperson confirmed that, adding that the price reflects a "fully installed" system including a warranty. "Many other technologies, including batteries, typically aren't quoted on a fully installed basis," the spokesperson said. According to the US Energy Information Administration (EIA), new natural gas plants cost about $1,488 per kkilowatt to build as of 2014.

President & CEO of Hydrostor Curtis VanWalleghem noted in the company's press release that it is “engaged with several utilities around the world to deploy systems rated at hundreds of megawatts, delivering gigawatt-hours of storage at durations ranging from four hours up to multiple days.” Hydrostor’s spokesperson told Ars that the company couldn’t provide details on those partnerships at this time, but it hoped to announce larger projects in the coming months.

In January of this year, Canada’s Globe and Mail reported that Hydrostor was looking to secure contracts from US-based utilities that had been buying energy from closing or soon-to-be-closed peaker plants (that is, plants that are only turned on when demand for electricity is highest). The company was apparently “targeting dozens of mostly coal-powered facilities of at least 100 megawatt capacity across the US that either shut down in 2016 or will shut this year,” the Globe and Mail wrote.

Post Comment   Private Reply   Ignore Thread  


[Home]  [Headlines]  [Latest Articles]  [Latest Comments]  [Post]  [Mail]  [Sign-in]  [Setup]  [Help]  [Register] 

Please report web page problems, questions and comments to webmaster@libertysflame.com