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YouGen Blog

Readers tips of the month: biomass and air source heat pump

Posted by Cathy Debenham on 20 March 2012 at 9:02 am

When people register on YouGen we ask them about their renewable energy, and any tips they have for others. Here are our favourites this month:

Drumrossie is retired, and lives in a large, old and difficult to heat house. He has installed a log burning boiler with a 60kW output and with 4,000 litres of hot water storage capacity.

"The system works very well, but requires more wood than I initially invisaged. I have my own timber so that is not a problem. It takes one days work to cut, split and stack a week's supply.

"The failing with a log boiler is the fact that when you are not there you have no heat. Fortunately the boiler I have installed has the option to add a pellet burning option for times when you are away. I plan to install this in the summer.

I estimate we will save 9,000 litres of oil a year, not bad for 1 days work a week in winter."

His tips are:

  • Know your requirements
  • Work out costs
  • Check security of fuel supply, remember 25 ton of logs is a big pile and you need 2 of these for a 2 year supply
  • Use seasoned wood only, maximum moisture content 25 per cent.

DaveP is a retired plant engineer with an interest in reducing CO2 emissions and saving money on energy. He has a new solar PV system, and two air to air heat pumps:

"I have recently installed a 4Kw PV system which has been running for about 4 weeks and is operating very close to the predicted values.

"I also have 2 stand alone Fujitsu air to air inverter controlled heat pumps, one in a large conservatory and the other in the dining room which doubles as an office.

"These both work extremely well and on bright days are now producing heat from the PV system for free. I am expecting that during the summer when the conservatory gets too hot I can also cool it for free."

photo by travelling.steve


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1 comments - read them below or add one


waterheadComment left on: 20 March 2012 at 2:21 pm

I am in the process of applying for planning permission for installing an archimedes screw,producing  about 69,000kw per year from my site. I have LPG central heating in an old farmhouse, with double glazing, but still costs a small fortune to run, which is why it is not run excessively. My question is this, when I have my own power I plan to heat a very large insulated tank to serve as a reservoir of central heating water, thereby dispersing with the LPG, but in the meantime what would be the economics of heating with off peak electric, ie economy 7

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