The 59-acre (24 hectare) site will also boast a solar thermal hot water system to pre-heat the water for the heating system, and a biomass boiler that will provide heat using locally-sourced wood chips.

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It doesn't take Mr Tibble very long to find the source: "A lot of the heat down here is not just from the boiler, I would say 60-70% of the heat is from this, " he says, pointing at unclad pipes carrying hot water from the boiler.

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The biomass boiler will provide heat to both the Crichton Royal Hospital and Dumfries Infirmary.

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The four adults held captive -- Edwin Sanabria, Herbert Knowles, Tamara Breeden and Derwin McLemire -- were locked in a pitch-black, 13-by-7 foot room that housed the former boiler used to heat the building, police said.

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With sorghum, the ethanol distillery can put the bagasse (plant stalks) to use as a boiler fuel, generating heat for distillation and steam for electricity.

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Beyond this eco-friendly element, Radiator Labs is integrating a phase change material into its product that can store energy and heat an apartment for up to four hours without assistance from the boiler.

ENGADGET

If you are living on means tested benefits AND you live in the hardest-to-heat homes you may be eligible for a free new central heating boiler, insulation for a hot water cylinder, loft, cavity wall and solid wall insulation, draught proofing for doors and windows or renewable energy technologies such as solar panels.

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In the residential sector, combined with the home Energy Efficiency Scheme and Boiler Scrappage Scheme, a total of 25, 000 Welsh homes were improved and made cheaper to heat during 2010-11.

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