net plant heat rates (Btu/kWh). The biomass fuel consumptions were calculated by multiplying GWh/yr times Btu/kWh, and dividing by 8.5 million Btu/t (4250 Btu/lb, or 8500 Btu/dry lb with 50% moisture content). Table 2 Plant Electricity Generation and Biomass Fuel Consumption Estimates Plant Location MWe GWh/yr CF, % Btu/kWh Tons/yr*
A properly insulated flue, needed for efficient operation of a biomass boiler, can cost around £2,000 to £2,500. An accumulator (or buffer) tank could cost about £1 per litre. It will probably be sized to between 50 and 100 litres per rated kW for a log boiler. A pellet boiler needs a smaller accumulator, at maybe 20 litres per rated kW.
Can you really scrap your gas boiler and heat your home
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Consequently, the change in carbon density from converting forestland to cropland would be -84.72 metric tons of C/hectare/year of biomass plus -3.60 metric tons C/hectare/year of soil C, minus 10.26 metric tons C/hectare/year from drained organic soils, equaling a total loss of 98.5 metric tons C/hectare/year (or -39.89 metric tons C/acre/year) in the year of conversion.
• Utilising biomass as fuel encourages more woodlands to be sustainably managed, thus benefiting biodiversity. 1.3 How much biomass? The annual demand for biomass fuel for a particular site depends on the following: • Scale of the installation • Conversion option (heat only, combined heat & power [CHP], boiler or stove) • Operating hours
A guide to small-scale wood fuel (biomass) heating systems
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