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Windows: single, double or triple glazing

Posted by Tim Pullen on 3 June 2009 at 10:07 am

Windows: single, double or triple glazing

If you are thinking about changing your windows you will need to think about U-values. A U-value measures of the rate at which heat escapes through a fabric, so the lower the figure, the better.  A U-value of zero means that no heat is escaping.  It is expressed as Watts per square metr…

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Selling the electricity you generate

Posted by Cathy Debenham on 1 June 2009 at 10:12 am

Selling the electricity you generate

If you think that choosing your utility supplier is complex and painful, then just wait until you start exploring the tariffs for exporting the electricity you generate back to the grid.  There are two main ways of selling your electricity. Some suppliers pay for all the electricity you gen…

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A short break

Posted by Cathy Debenham on 22 May 2009 at 9:57 am

A short break

YouGen's bloggers will have a week off while I go on holiday. Normal service returns from 1 June. …

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Solar thermal for space heating

Posted by Gabriel Wondrausch on 21 May 2009 at 10:23 am

Solar thermal for space heating

I am often asked whether a solar thermal system can be used for space heating as well as for hot water. Technically, it can.  However in most cases it is neither cost effective nor energy efficient to do so.  The cost of upgrading the system to work with space heating as well as hot w…

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Support for solar hot water in Warwick

Posted by Cathy Debenham on 20 May 2009 at 10:18 am

Support for solar hot water in Warwick

Doubling the number of solar hot water systems installed homes in Warwick District is the aim of a great new project to support homeowners. The Solar 300 Challenge was launched last week by Action 21, a social enterprise which helps people live more sustainably. Their aim is to encourage more p…

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Rainwater harvesting is good for business

Posted by Barry Nutley on 18 May 2009 at 11:08 am

Rainwater harvesting is good for business

Rainwater harvesting systems can provide a variety of economic benefits to businesses. Alongside the standard irrigation and toilet flushing, it can also be used for cooling systems. In some areas it also reduces the risk of flooding. Generally, the systems with the fastest payback periods us…

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PV systems need an efficient inverter

Posted by Graham Eastwick on 15 May 2009 at 11:07 am

PV systems need an efficient inverter

Photovoltaic (PV) cells and modules are only part of the picture when you consider the efficiency of a solar electricity generating station. Key to an effective PV system is an efficient inverter, which converts the direct current (DC) electricity produced to AC (alternating current or mains equiv…

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Electricity meters about to get smarter

Posted by Cathy Debenham on 13 May 2009 at 1:55 pm

Electricity meters about to get smarter

A smarter grid, more suitable for transmitting renewable energy, is a step closer with the Government’s announcement on Monday that every home in the UK must have a smart meter installed by 2020.Smart meters transmit and receive information from your electricity or gas supplier in real time. This …

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Energy measuring brings highs and lows

Posted by Cathy Debenham on 11 May 2009 at 11:27 am

Energy measuring brings highs and lows

I find energy use and carbon emissions difficult to get my head around. You can’t see them or touch them. A monthly direct debit or quarterly bill are distant from the actual use you make of gas, electricity or oil. However, I’ve found a way to make them more visible. I’ve been measuring my us…

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What's the point of a cavity wall?

Posted by Tim Pullen on 5 May 2009 at 2:30 pm

What's the point of a cavity wall?

Once again I recently surprised a client by suggesting that single-skin timber-frame wall construction would be a good idea. Shock and horror hardly describe it. It was like I suggested that his children be sold into slavery to fund the new home. But think about it, what is the point of the cavity? …

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