Angus Campbell's Comments

April 02, 2014

US Driving Research on Hydrogen Fuel Cells

I think rather than refueling stations we should be concentrating on storage exchange stations. A driver would simply exchange the empty storage container for a filled one. This would eliminate the need for expensive infrastructure such as pipelines and could use the already available electrical grid to produce the hydrogen from excess renewable energy with filling stations strategically located for safety, transport and access.

February 07, 2014

Are Air Source Heat Pumps a Threat to Geothermal Heat Pump Suppliers?

Dennis: I like your way of thinking. Efficiency and conservation should and must take precedent over all other developments. This is the only way renewables will overtake fossil fuel based energy systems.

January 25, 2014

US Congressional Action Could Help Advance Energy Storage Technologies

Excellent article. I would have hoped that the author would have commented on Flow Batteries and the recent development from Harvard researchers regarding the use of quinones, an inexpensive and environmentally sound chemical that makes the storage of large amounts of electricity possible.

January 25, 2014

US Congressional Action Could Help Advance Energy Storage Technologies

Peter: The use of abandoned mines located at sea level could also be used for hydro storage. The idea is to install low head-reversible pump generators just below sea level in a mine. The mine is flooded through the generator feed stock pipe with sea water thus generating electricity. To store electricity the generators are reversed pumping water out of the mine and into the surrounding ocean. The beauty of this system is that the water level or head at the generator will be constant since the ocean level doesn't change a great deal. There are quite a few abandoned mines along the eastern seaboard of NA which can be used for this type of operation and the "hole" created by the mine is already available reducing the costs considerably. Just think of the irony. Abandoned coal mines used to store electricity from renewables.

January 25, 2014

US Congressional Action Could Help Advance Energy Storage Technologies

Peter: BTW here is a link to a proposal the government of Belgium has for storing wind generated electricity. You may find it interesting.

http://m.technologyreview.com/view/510806/a-manmade-island-to-store-wind-energy/

November 28, 2013

US' Biggest Landfill To Become New York City's Biggest Solar Project

Wouldn't it make sense to add in a Geothermal system and utilize the two together?

November 22, 2013

Pumped-Storage Hydropower Projects Attractive Means of Storing Excess Energy, Stanford Study Says

By using low head turbines, it may be possible to create a reservoir within an existing hydro reservoir to store energy as pumped water. The new reservoir would be enclosed as an atoll with the water several feet above the existing reservoir. Reversible low head turbines would extract energy from wind turbines or solar panels placed in the existing reservoir and pump the water into the new reservoir where it would be released as needed and generating electricity. The beauty of this system is that the environmental impact would be zero(the existing hydro dam has already altered the environment) and water usage would be a recycling process where energy is extracted twice. Connections to the grid would be via the hydro dams connection. There are several large hydro dams in Canada where this would be feasible. James Bay and Churchill Falls come to mind as well as several through out the rest of Canada and the USA.

November 22, 2013

Pumped-Storage Hydropower Projects Attractive Means of Storing Excess Energy, Stanford Study Says

By using low head turbines, it may be possible to create a reservoir within an existing hydro reservoir to store energy as pumped water. The new reservoir would be enclosed as an atoll with the water several feet above the existing reservoir. Reversible low head turbines would extract energy from wind turbines or solar panels placed in the existing reservoir and pump the water into the new reservoir where it would be released as needed and generating electricity. The beauty of this system is that the environmental impact would be zero(the existing hydro dam has already altered the environment) and water usage would be a recycling process where energy is extracted twice. Connections to the grid would be via the hydro dams connection. There are several large hydro dams in Canada where this would be feasible. James Bay and Churchill Falls come to mind as well as several through out the rest of Canada and the USA.

October 22, 2013

Time to Consider Solar Net Metering Alternatives: Storage

A well written article and one with lots of merit. Wind power is even more precarious since at least we know we won't be producing power from solar in the night time and the need for storage is critical since much of the favorable winds are at night. I am just wondering if we shouldn't design a LED light which has a 24 hour battery built into each outlet. With this type, each individual light could be powered by small scale solar or wind and separate from the grid. Internal wiring would route electricity from the renewable source, to the batteries and the light would continuously draw power from each battery thus enabling continuous supply over a 24 hour period without a recharge. Large buildings such as stores or offices would benefit immensely from this type of setup since even if the renewables are disengaged, grid power could be switched on to power the batteries.

July 20, 2013

How Do Storage Systems in Photovoltaic Installations Work?

Mr. Ferguson
I am presently working on a Wave Energy Converter which can be used in conjunction with a Wind Turbine tower to co-generate electricity. One of the areas I looked at for storing excess energy is on board ocean going cargo ships. Here is how it would work. Design and build a test model of a cargo vessel which has on board hydrogen storage capacity using one of several storage methods now in the research stages or of proven capabilities. The cargo vessels would both produce and store hydrogen and use it as a propulsion fuel replacing diesel fuels. The excess would be sold back to the grid while the vessel is in port as grid electricity during peak times. The ocean going shipping industry would be very interested in this since it reduces one of the biggest expenses they have and if storage capacities prove large enough, enable each vessel to make money while in port. I know it sounds off beat but by using cargo vessels, energy can be transported to sea ports around the world where grid connections would be readily available without building new transmission lines.

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