Category Archives: Science

posts about science

Ask The Sietch – DIY Combined Heat And Power (CHP)?

questionmarkDo you have a question you would like to Ask The Sietch? Contact us or post your question in the Forums, and we will do our best to answer it.

I got this question the other day and I have to say its a really interesting one (it doesn’t hurt that they butter me up a bit).


I think your website is great! Just to keep your taste buds alive I have a question…

My friend has a fridge and a freezer, he lives in the middle of nowhere and powers them from a geny. In the whole house the fridge and freezer are the life support systems, they are more important than lights, TV, radio etc.

He has just ordered a new wood stove that is able to output 31Kw of hot water power that can heat his whole stone walled house and more. He lives in a forest so he has a large supply of wood.

Do you have any idea on how we can go about converting the fridge and freezer to be powered from the hot water? We both can make anything but need some ideas and guidance…

Kindest regards,

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Cape Cod Climate Change Panel- Rob O’Leary And Cape Wind

cape cod climate change panel

I have talked before about Keith Bergman and his continuation of Al Gores mission to alert and inform the world about global warming. I was at Keith’s first such presentation several months ago. This was Mr. Bergman’s 6th presentation, and this time it was followed by a panel discussion.

He had added a couple of very interesting slides, showing among other things what a 20 foot rise in sea level would do to Cape Cod. The presentation had been slimmed down to a much more lean and mean show aimed at the local audience. Overall it had improved significantly. While the slide show was interesting, the highlight of the evening was the panel discussion.

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Call For Papers: Global Applications Of Renewable Energy For GHG Reduction

Technological advances offer new opportunities and declining costs for energy from renewable sources. In the longer term, renewables can meet a major part of the world’s demand for energy.

High rates of innovation in the energy sector are a prerequisite for meeting the most ambitious greenhouse gas (GHG) mitigation objectives and significantly lowering the costs of many technology options below present levels.

RD&D programs are necessary but not sufficient to establish new technologies in the marketplace. Commercial demonstration projects and programmes located in realistic economic and organisational contexts to stimulate markets for new technologies also are needed. For a wide range of small-scale, modular technologies, such as most renewable energy technologies and fuel cells, energy production costs can be expected to decline with the cumulative volume of production, as a result of learning by doing.

The objective of the special issue is to provide a means for the publication and interchange of information, and embraces history, the power market, role of utilities, international activity, manufacturing expansion, utility projects, corporate projects, community projects, financial activity, archival bibliography and resources.

A special issue of the International Journal of Global Energy Issues (IJGEI)

Important Dates
Proposal submission: 15 June, 2007
Notification of acceptance: 15 July, 2007
Complete manuscript submission: 15 September, 2007
Notification of acceptance: 30 November, 2007
Final paper: 30 December 2007

For more information, please see the Journal Call for Papers website.

The Smoking Gun

global warming chart

FIGURE SPM-5. Projected surface temperature changes for the early and late 21st century relative to the period 1980–1999. The central and right panels show the Atmosphere-Ocean General Circulation multi-Model average projections for the B1 (top), A1B (middle) and A2 (bottom) SRES scenarios averaged over decades 2020–2029 (center) and 2090–2099 (right). The left panel shows corresponding uncertainties as the relative probabilities of estimated global average warming from several different AOGCM and EMICs studies for the same periods. Some studies present results only for a subset of the SRES scenarios, or for various model versions. Therefore the difference in the number of curves, shown in the left-hand panels, is
due only to differences in the availability of results.

Its here, one of the most comprehensive studies ever done on global warming. With over 2500 scientists, over 800 contributing writers, 450 lead authors from over 130 countries, taking over 6 years to produce this one amazing report. The Intergovernmental Panel on Climate Change (IPCC) has done a wonderful job of bringing so much mental power to bear on studing this problem.

In essence this is a “read it and weep” moment for anyone who accepts science but not human caused global warming, for thouse who refuse to accept science this wont do anything for you.

This is a sober and strongly worded message to the world, do something, and do it now. Its far too late to stop the harmful effects of what we have already done, but its not too late to prevent even worse things from happening. Global warming is going to hurt us, badly, but if we act soon it wont kill us. You know what they say about things that don’t kill you…

From the study summary:
Download the summary and read it for yourself here (pdf)

Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years. The global
increases in carbon dioxide concentration are due primarily to fossil fuel use and land-use change, while those of methane and nitrous oxide are primarily due to agriculture.

Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global mean sea level

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