• Aug
    27
    2010

    Case study - 4.6kW archmidean screw at Dandridge's Mill

    This week's blog is a quick case study if the award-winning development of Dandridge's Mill in Oxfordshire - this development includes a 4.6kW archimedes screw at the site. The site was developed by Hallidays who also have a hydro installation company.

    The head at the site is 2.4M and the Qmean 400 litres per second. The screw design flow is 340 litres per second, in the first year it generated 27,000kWh - Hallidays state the system has a 69% water to wire efficiency. Although not registered for FITs, this system would generate over £5,000 a year in income from the FIT - and obviously reduce the bills for the flats at the development. As the whole building was renovated at the same time its difficult to give a total cost - although the company estimate a similar installation could be achieved for £80,000.

    Its also difficult to estimate the potential value that the screw has added to the building in the current housing market; however estate agents I have spoken to say that houses with renewable and/or low energy features sell much quicker than inefficient buildings with traditional fossil fuel systems.

     

     

     

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Unit 23
Hebble End Mill
Hebden Bridge
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