Saturday, May 29, 2010

Garden Water




I try to collect rainwater for all the needs of the garden, conservatory, and greenhouse. Most years we usually manage but during the last few days it was a close thing. We emptied the last water out of the three butts yesterday so were delighted when it started raining this morning and at least half filled the butts up again.
A special adapter is required from the house downpipe but any bit of guttering and pipes from skips will do for greenhouses and sheds. An old dustbin will do as the container.

Saturday, May 1, 2010

Election




Polling day draws near and I am still waiting for all the parties to really tell us what they are going to do to slow climate change down. In the leaders debates it was hardly mentioned. I went to a hustings for my constituency and it was not mentioned. I have looked through the leaflets that have come through the door and the most I can find is reference to recycling.
Luke at Northfield Ecocentre has produced a useful summary of what each of the parties has said about environmental issues in their manifestos. You can read that here .
This is all very disappointing as although the economy is important the environmental disaster awaiting the world due to climate change is likely to be worldwide. If the parties are not planning for it one is left wondering who will?

Monday, April 5, 2010

Heat Pumps




Last time I wrote about the solar hot water panel at the Northfield Ecocentre. This week the blog is about the air source heat pump. The “air source” bit is because it grabs the heat out of the air whereas other heat pumps grab it from the ground.
If ever you have looked behind your household fridge you will see there is a coil. If the fridge is working then the coil will be warm. This is how the heat pump works. In the case of the fridge a pump is taking the heat out of the fridge and getting rid of it through the coil. In the case of an air source heat pump it takes the heat from outside air and heats a coil which we use as a radiator to heat the building. The physics of it means that for every kilowatt of electricity we use to drive the pump then over two kilowatts are put into the radiators to heat the building. It seems like magic to me! Of course one still has to pay for the electric but only half what it would have cost with conventional electric heating. However they do say that if gas is available it is still more economical to use gas for heating. For rural and isolated buildings it is well worth a study.
The graph above shows the electricity used by the Ecocentre heat pump and the heat produced. You will see that the output is about twice the input. Unlike the solar panel the graph is at present reducing as the weather gets warmer. Our peak was at New Year when we had a pipe frozen and had to leave the heat on overnight to thaw it out. We regular update the graph and this is shown here.

Saturday, March 27, 2010

Heating Up




Over the last week or two we have been all conscious how much warmer it has been as compared to the long dark days of January. The spring flowers are also feeling the warmer weather coming as the daffodils and crocuses come into bloom. In our garden the daffodils are about two weeks later than last year.
Those of us with solar hot water panels will also have been noticing the difference. We have now started having days when the panel alone can provide all the hot water we want.
At Northfield Ecocentre we record the performance of the panel. The graph in the picture above is updated to yesterday but clearly shows the rise in output. It shows the amount of daily heat produced by the sun on our panel expressed in Kilowatts. The way it dramatically increases in the summer can clearly be seen on the graph which started last spring.
If you want to watch how it performs during the summer it is regularly updated and can be seen here.

Friday, March 12, 2010

Permaculture



I have tried to understand the principles of permaculture on a number of occasions but each time have found myself bogged down in statements like “Provision for life systems”
Last night I attended a talk at Northfield Ecocentre by two people who are applying permaculture to their garden in Sutton Coldfield.
When shown in a garden setting it seems easier than when trying to apply it to “life as whole”.
I came away from the talk with the impression that if I tried to apply some of the following then I am doing some of the permaculture design principles.

· The garden must be sustainable. Ie it should not rely on inputs such as fertilisers from outside.
· Plants should be planted to help each other. Ie some like shade and some like to give shade.
· Every plant has its use whether it is to encourage bees or provide fertiliser such as nettles and comfrey.
· Understanding diversity to make things work together. Ie companion planting.
· Make use of edge effects. The sides of woods and ponds all have a use.
· Be creative in fitting things in. This may have things climbing up each othe or compost heaps heating up new plants.
· Recycle and reuse to create the infrastructure of the garden.

It is hoped the garden at the Ecocentre will have permaculture features incorporated in it. Now that the better weather is coming volunteers will be needed to come and help.

Monday, March 1, 2010

Northfield Photographs




Taking photographs often makes you see things in a different light. On Saturday I walked round the 1000 year old St Laurence Church area. I had driven through on a number of occasions but never stopped and had a look.
Northfield Ecocentre has just launched a photographic competition. The photographs have to be taken in Northfield but can be either of “Nature”, “Cityscape”, or “Community”. There are a number of age groups. So here is a chance to wander round with a purpose and see what you can find. You have until the end of May to find the perfect photo!
Details of the competition can be obtained by downloading:
The Brief
The Entry Form
There is a lot going on at the Ecocentre these days so keep an eye open for something that suits you.

Monday, February 15, 2010

It Pays to Produce Your Own Electricity



The government has recently announced that those people who produce their own electricity will be paid for doing so. The scheme is know under the name of “Feed in Tariffs” or FiT.
Some details are:
· The Feed-in Tariff makes installing micro generation much more financially attractive -it should be possible to finance the costs with a bank loan, with the income from the Feed-in Tariff helping to cover your repayments.
· Payments will be inflation-linked for all generators and tax-free for domestic properties.
· Payments are guaranteed for 20 to 25 years, depending on the technology.
· For small generators, the FiT will be paid for their total generation, including the units they use themselves.
For example - a household with a 2kW solar pv system
Installation cost: £10,500 (subject to survey)
Income (including savings made on electricity bill):£870 a year
Return on Investment 8%, payback period 12 years.
For example - a household with a 6kW wind turbine
Installation cost: £24,000 (subject to survey)
Income (including savings made on electricity bill): £2,700 a year
Return on Investment 12%, payback period 9 years
· Households should not consider installing any micro-generation technology until they have first addressed the energy-efficiency of their property.
· Technology must be appropriate for the situation - for example solar pv works best on a south-facing roof, and there is no point installing a wind turbine unless you live in a windy place.
· The scheme only applies to installations fitted after 15th July 2009 and even those get a lower rate per unit than brand new projects.
· Good Energy however will pay most people 15p a unit regardless when it was installed and can help with every stage of the process, from choosing the right technology to finding a grant to getting paid your FiT - visit www.generateyourown.co.uk to find out more

Friday, February 5, 2010

Church Photovoltaic Panels




Birmingham planners have shown Birmingham up as a “stick in the mud” department by recommending rejection of the planning permission to fit PV panels on St Mary’s Church Moseley. Councillors yesterday simply opted out by accepting the officers opinion. Some time ago I had heard that there were staff in that department who were climate change deniers so perhaps this reinforces that view.
St Marys is a grade ll listed building yet throughout the country there are examples of planning authorities granting permission for panels on even Grade l listed churches St James, Piccadilly shown above).

In rejecting the application the council has flown in the face of government advice to them which is that sustainability issues should have the highest priority when considering applications. They have even ignored the advice of one the city’s own sustainability officer who incidentally is also part of the planning team.

By this action the council has put the reputation of Birmingham as a progressive sustainable city, right to the bottom of the league