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Farm Building and Infrastructure
Renewable Energy
kWh/tonne output
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<blockquote data-quote="farmerm" data-source="post: 7180370" data-attributes="member: 7195"><p>If you measure wheat straw in a bomb calorimeter it would have a calorific value of 14.4GJ which would equate to 4000kwt... however your biomass boiler is not a zero (or close to zero) loss combustion chamber. If your burner is 75% efficient 1000kwt of your 4000kwt escapes up the chimney and though heat radiating out of the boiler. Whatever efficiency you are told your boiler is, it probably is not, such numbers will be best efficiency, a boiler finely tuned for the test and before soot and clinker build up. I would certainly err towards Doining it for the Kids numbers, being pleasantly surprised is more better on the soul than bitter disappointment.</p></blockquote><p></p>
[QUOTE="farmerm, post: 7180370, member: 7195"] If you measure wheat straw in a bomb calorimeter it would have a calorific value of 14.4GJ which would equate to 4000kwt... however your biomass boiler is not a zero (or close to zero) loss combustion chamber. If your burner is 75% efficient 1000kwt of your 4000kwt escapes up the chimney and though heat radiating out of the boiler. Whatever efficiency you are told your boiler is, it probably is not, such numbers will be best efficiency, a boiler finely tuned for the test and before soot and clinker build up. I would certainly err towards Doining it for the Kids numbers, being pleasantly surprised is more better on the soul than bitter disappointment. [/QUOTE]
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