Lamps flicker when they are on. Well, most of them do. And with flickering I mean to say they vary in illuminance. There were messages in the media about (led)lams that flicker so much that people got a headache because of it when working in that light..
OliNo has a way to measure the variations in illuminance and attribute to it a number; a so called illuminance modulation index. This article explains how is measured and gives a number of examples.
It is possible to fine tune your central heating system by balancing the radiators and applying a modulating thermostat in cooperation with a modulating boiler. The first measurements revealed a 37% reduction in gas consumption. Read further how I discovered this amazing fact.
We see more and more biodegradable packaging material used in the market. The material can be made from modified starch. On of the main advantages of biodegradable packaging material is that is not based on fossil-fuel plastic but instead made of bio material. This bio material degrades in nature. Using biodegradable packaging material instead of plastic based material can reduce a lot of waste. It is claimed to dissolve in water. To test this, we have set up a small test with glass of water and dropped a single biodegradable foam peanut in it. We recorded this on video to see how long it takes to dissolve the foam peanut in water without extra help like spraying water on it or stirring. The result is amazing.
What is white light? In the OliNo lamp measurement articles a chromaticity diagram is given and the color point of the light of the tested lamp is indicated. The chromaticity diagram contains all possible colors, and which are white?
Rob Hopkins founder of the Transition movement, reminds us that the oil our world depends on is steadily running out. He proposes a unique solution to this problem — the Transition response, where we prepare ourselves for life without oil and sacrifice our luxuries to build systems and communities that are completely independent of fossil fuels.
Saving energy makes sense if it’s done correctly. This simple example shows that replacing often used light bulbs for Compact Flourecant Lights has a return on investment of less than 7 months. With some small modifications the replacement also looks pretty good!
DIY Built Solarpanel Installation Now Operational
Posted by Chris van der Zwaal in Solar energy 19 Comments»
Last spring (2009) I wrote my first article about building my own solar panels (just to be clear : for making electricity) . At the end of the day on December 31, 2009, I had finished installing my panels totalling about 400 Wp. So now its time for an update.
Since May 2007 OliNo is busy with professional lamp measurements. The goal is to get more transparancy in the lamp market. To reach this goal we publish the lamp measurement results on our public website. This information is accessible for everybody. Until now we have published more than 500 different lamp measurement reports on the website. We have so many measurement report now that old overview was way to long to scroll through. So we needed a beter way to view and search the measurement reports. Time for a new lamp measurements overview.
Power Factor, THD and current trough neutral line
Posted by Marcel van der Steen in Explanation 1 Comment»
Suppose you want to change the current light bulbs into new ones, for instance led illumination. What does that mean for the current through the neutral line, harmonics etc? Recently I received three questions. An answer was so lengthy that it would not fit on the FAQ, hence a little article.
World Energy Outlook 2009 (IEA)
Posted by Jeroen van Agt in Climate, Energy saving, Unsustainable No Comments»
Since WEO-2008, the economic downturn has led to a drop in energy use, CO2 emissions and energy investment. Is this an opportunity to arrest climate change or a threat that any economic upturn might be stifled at birth?
What package of commitments and measures should the climate negotiators at the UN Climate Change Conference (COP 15) in Copenhagen put together if they really want to stop global temperatures rising? How much would it cost? And how much might the developed world have to pay to finance action elsewhere?
How big is the gas resource base and what is the typical pattern of production from a gas field? What does the unconventional gas boom in the United States mean for the rest of the world? Are we headed for a global gas glut? What role will gas play in the future energy mix? And how might the way gas is priced change?
All these questions and many others are answered in WEO-2009. The data are extensive, the projections more detailed than ever and the analyses compelling.
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