Barcelona hit with heaviest snowfall in 25 years
Tuesday, 9 March 2010
Saturday, 6 March 2010
Global Not Warming
The worst freeze for over 30 years has affected the Baltic, trapping many ships in the ice.
http://www.telegraph.co.uk/news/worldnews/europe/sweden/7374495/Ships-stranded-for-hours-in-Baltic-Sea-ice-freed.html
http://www.telegraph.co.uk/news/worldnews/europe/sweden/7374495/Ships-stranded-for-hours-in-Baltic-Sea-ice-freed.html
Monday, 1 March 2010
Washing Prescott's Smalls
Oxymoron of the month from Iain Dale. And it's not yet March 2nd.
http://iaindale.blogspot.com/2010/02/washing-prescotts-smalls.html#links
http://iaindale.blogspot.com/2010/02/washing-prescotts-smalls.html#links
Saturday, 27 February 2010
Heating Appliance-Efficiency Con
To deliberately mislead consumers, appliance manufacturers quote their appliances' efficiency at Net cv (calorific value) or ncv. This enables them to quote a higher number, & so con purchasers into thinking their energy use will be less than it actually will be.
A manufacturer that states his appliance is, for example, 95% efficient (ncv) misleads a purchaser into thinking that only 5% of the fuel / energy is wasted into the flue.
Not so.
Net cv is only a theoretical figure. It is thermodynamically impossibility to buy fuel / energy at Net cv, so by definition, all energy is supplied at Gross cv. The relationship between Net & Gross cv (in the UK for Natural Gas) is that Net cv is 1.11 x Gross cv.
e.g. An appliance that is quoted as 95% efficient at Net cv has a Gross efficiency of only 85.595%. In other words, a consumer who buys 100 units of fuel / energy, gets not 95 but only 85.595 units of useable heat.
The fact that manufacturers can quote efficiencies at Net cv means they can quote a figure greater than 100% for modern condensing boilers. (Could be approx 104% Net cv.) Hands up those who thought that at 104% efficiency, that boiler gave them 4% more heat than they purchased.
That boiler quoted at 104% Net cv efficiency is only 93.704% efficient and loses 6.296% of energy by case & flue losses.
A manufacturer that states his appliance is, for example, 95% efficient (ncv) misleads a purchaser into thinking that only 5% of the fuel / energy is wasted into the flue.
Not so.
Net cv is only a theoretical figure. It is thermodynamically impossibility to buy fuel / energy at Net cv, so by definition, all energy is supplied at Gross cv. The relationship between Net & Gross cv (in the UK for Natural Gas) is that Net cv is 1.11 x Gross cv.
e.g. An appliance that is quoted as 95% efficient at Net cv has a Gross efficiency of only 85.595%. In other words, a consumer who buys 100 units of fuel / energy, gets not 95 but only 85.595 units of useable heat.
The fact that manufacturers can quote efficiencies at Net cv means they can quote a figure greater than 100% for modern condensing boilers. (Could be approx 104% Net cv.) Hands up those who thought that at 104% efficiency, that boiler gave them 4% more heat than they purchased.
That boiler quoted at 104% Net cv efficiency is only 93.704% efficient and loses 6.296% of energy by case & flue losses.
Monday, 28 December 2009
AGW is obvious. Innit?
If a world-renowned professor at this country's leading climate-research university (UEA) could not prove it is occurring, and had to fiddle the figures to make it appear to be occurring, then no further comment should be necessary.
Friday, 2 October 2009
Yob alert, but we can't say who, or, what they look like!
Our local paper reports two Yobs have been given ASBOs, preventing them from entering specified parts of our town.
Yob1's photo is prominently displayed, so us townsfolk may recognise the miscreant if he sets foot inside the banned area.
Of Yob2 there's no photo because he's under 16 "and can't be identified".
So how are we supposed to know if he's in town?
F@cking brilliant joined-up thinking that is.
If he's old enough to be a Yob, get caught & get an ASBO, he's old enough to be publicly identified.
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