Group items tagged efficiency - Clean Energy Transition

wattwatt - community for individuals interested in electrical energy efficiency - Cable... - 0 views

wattwatt.com/...e-values-for-various-harmonics

cables

shared by Sergio Ferreira on 27 Mar 08 - Cached

Nodal analysis or link analysis of the Harmonic prone Electrical supply installation, its important to know the values of impedances offered by power cables for different harmonics present
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Most of Power Cable manufacturers do not give such data. Even after asking them, it's un-available with them.
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TED | Talks | Amory Lovins: We must win the oil endgame (video) - 0 views

www.ted.com/...51

cars economics energy efficiency oil presentations ted transport video

shared by Hans De Keulenaer on 24 Dec 07 - Cached

Energy guru Amory Lovins lays out his plan for weaning the US off oil and revitalizing the economy in the process. It's the subject of his book Winning the Oil Endgame, and he makes it sound fairly simple: On one hand, the deadly risks of continued dependency, and on the other, some win-win solutions.
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EU calls time on inefficient circulators | Energy Efficiency News - 0 views

www.energyefficiencynews.com/...1976

eco-design water circulators heating

shared by Colin Bennett on 01 Apr 09 - Cached

Colin Bennett on 01 Apr 09

The latest device to be the subject of the European Union's Eco-design regulations are circulators -small pumps that are mainly used to circulate water in heating systems.

<div class="cArrow"> </div><div class="cContentInner">The latest device to be the subject of the European Union's Eco-design regulations are circulators -small pumps that are mainly used to circulate water in heating systems.</div>

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Pumped Hydro: Is it TOO Green? | PeteSinger - 1 views

www.renewableenergyworld.com/...pumped-hydro-is-it-too-green

renewables methane hydropower

shared by Hans De Keulenaer on 10 Jan 11 - No Cached

In the latest Electric Power Research Institute Journal, an article titled "Hydropower Reservoirs: A Question of Emissions" notes that reservoirs used for hydropower and for pumped-hydro energy storage are not necessarily as green as you might imagine. Or rather, they might be too green: carbon-rich organic material that accumulates on the reservoir floor can be the source of carbon emissions. A recent study of the 90-year-old Lake Wohlen, in Switzerland, for example, found high emissions of methane, as recently reported in the journal Environmental Science and Technology, in an article titled: "Extreme Methane Emissions from a Swiss Hydropower Reservoir: Contribution from Bubbling Sediments."
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F F on 11 Jan 11

Applies to both hydro reservoirs (i.e. water pooled behind a dam) and hydro pools filled with pumped-hydro. Note that the latter, pumped-hydro, already carries the emissions profile of the energy used to power the turbine pumping the water against gravity, scaled up for conversion efficiency losses.

<div class="cArrow"> </div><div class="cContentInner">Applies to both hydro reservoirs (i.e. water pooled behind a dam) and hydro pools filled with pumped-hydro. Note that the latter, pumped-hydro, already carries the emissions profile of the energy used to power the turbine pumping the water against gravity, scaled up for conversion efficiency losses.</div>

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Course Calendar - Assessing Sustainable Energy Technologies - 0 views

leeds-faculty.colorado.edu/...calendar.htm

e-learning technology wind photovoltaics ocean efficiency hydropower

shared by Hans De Keulenaer on 22 Nov 08 - Cached

BSRIA looks into the impact of banning the traditional light bulb in favour of CFLs - 0 views

www.bsria.co.uk/light-bulb

efficiency lighting regulation policy assessment

shared by Colin Bennett on 01 Sep 09 - Cached

Colin Bennett on 01 Sep 09

So far there are a lot of questions but few answers. It is worth recalling that the filament lamp went through about 50 years of development before reaching maturity. Although the perception is of more rapid progress today, we may have to wait until 2020 before CFLs reach their prime.

<div class="cArrow"> </div><div class="cContentInner">So far there are a lot of questions but few answers. It is worth recalling that the filament lamp went through about 50 years of development before reaching maturity. Although the perception is of more rapid progress today, we may have to wait until 2020 before CFLs reach their prime.</div>

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Qpinch | Industrial energy and emission saving - 0 views

www.qpinch.com

efficiency industry Belgium heating case studies

shared by Hans De Keulenaer on 11 Nov 17 - No Cached

The Qpinch Heat Transformer recovers residual heat from 40 °C / 104 °F and up. It is applicable on a megawatt scale throughout all major industries that use industrial heat, including food and feed, oil & chemicals, paper and pulp, cement and manufacturing.
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Hans De Keulenaer on 11 Nov 17

A solution using pinch technology claiming a coefficient of performance of 30 (units of heat per unit of electricity consumed).

<div class="cArrow"> </div><div class="cContentInner">A solution using pinch technology claiming a coefficient of performance of 30 (units of heat per unit of electricity consumed).</div>

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CityTouch: The Urban Lighting System Of The Future - The Pop-Up City - 1 views

popupcity.net/...-lighting-system-of-the-future

lighting factor-x philips efficiency maintenance cities

shared by Phil Slade on 09 Feb 12 - No Cached

Hans De Keulenaer liked it

Phil Slade on 09 Feb 12

CityTouch, an online urban lighting management system developed by Philips that enables dynamic, intelligent and flexible control on a city-wide scale.

<div class="cArrow"> </div><div class="cContentInner"> CityTouch, an online urban lighting management system developed by Philips that enables dynamic, intelligent and flexible control on a city-wide scale. </div>

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Hans De Keulenaer on 09 Feb 12

70% energy savings sound good. But how to claim 70% less maintenance costs. Less energy use means obviously less heat and more reliability. On the other hand, this is a much more complex system. It would be good to have an actual user stating this 70% reduction after installing the system and using it for a few years.

<div class="cArrow"> </div><div class="cContentInner">70% energy savings sound good. But how to claim 70% less maintenance costs. Less energy use means obviously less heat and more reliability. On the other hand, this is a much more complex system. It would be good to have an actual user stating this 70% reduction after installing the system and using it for a few years.</div>

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Insolation at Specified Location - 0 views

aom.giss.nasa.gov/srlocat.html

electricity efficiency renewables weather

shared by frank smith on 06 Jan 10 - Cached

frank smith on 06 Jan 10

"This web page produces a numerical table of sunrise, sunset, daily insolation at top of atmosphere, and sunlight-weighted cosine of the zenith angle at a single specified location. The produced table contains data for a single month, or if a month is not provided, data for a single calendar year. Latitude and longitude must be given in degrees and hundredths of degrees, not degrees and minutes. Default location is the Central Park weather station, New York City. "

<div class="cArrow"> </div><div class="cContentInner">"This web page produces a numerical table of sunrise, sunset, daily insolation at top of atmosphere, and sunlight-weighted cosine of the zenith angle at a single specified location. The produced table contains data for a single month, or if a month is not provided, data for a single calendar year. Latitude and longitude must be given in degrees and hundredths of degrees, not degrees and minutes. Default location is the Central Park weather station, New York City. "</div>

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Intel hopes open-source effort will lower Linux power | Underexposed - CNET News.com - 0 views

www.news.com/8301-13580_3-9781788-39.html

efficiency software

shared by davidchapman on 21 Sep 07 - Cached

davidchapman on 21 Sep 07

Intel plans to launch an effort called LessWatts.org on Thursday, a combination of open-source software and helpful hints to reduce power consumption of Linux servers, PCs and gadgets.

<div class="cArrow"> </div><div class="cContentInner">Intel plans to launch an effort called LessWatts.org on Thursday, a combination of open-source software and helpful hints to reduce power consumption of Linux servers, PCs and gadgets. </div>

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Rendement de 23,4% pour une cellule solaire < Technologie - Enerzine.com - 0 views

www.enerzine.com/...pour-une-cellule-solaire+.html

photovoltaics efficiency world.records renewables electricity

shared by Hans De Keulenaer on 01 Oct 09 -

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Des chercheurs de la branche ISE de l'Institut Fraunhofer ont obtenu un taux de rendement de 23,4% pour une cellule solaire monocristalline en silicium composée d'une couche mince semi-conductrice de type-p sur un substrat semi-conducteur
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Affordable, self-heating homes of the future, inspired by the past - CSMonitor.com - 2 views

www.csmonitor.com/...he-future-inspired-by-the-past

energy efficiency alternative energy

shared by Felix Gryffeth on 10 Apr 19 - No Cached

Felix Gryffeth on 10 Apr 19

"Thick walls (with 10 inches of insulation, in Bayside Anchor's case) and triple-pane windows keep the building airtight so very little heat escapes. Instead of a central heating system, each apartment has a small electric baseboard heater."

<div class="cArrow"> </div><div class="cContentInner">"Thick walls (with 10 inches of insulation, in Bayside Anchor's case) and triple-pane windows keep the building airtight so very little heat escapes. Instead of a central heating system, each apartment has a small electric baseboard heater."</div>

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Techno-economic and environmental evaluation of passive cooled photovoltaic systems in ... - 1 views

www.sciencedirect.com/...S1359431119352342

photovoltaics energy efficiency renewables innovation aluminium cooling

shared by Hans De Keulenaer on 19 Jan 20 - No Cached

Passive cooling was enabled by application of perforated aluminium fins fixed on the back side surface of the PV panel.
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can increase power yield of the PV system by 5% on at maximum
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