§ Mr. Corbettasked the Secretary of State for Energy what proportion of the energy value of primary fuels such as gas, coal and electricity it is estimated is lost as waste heat.
§ Mr. Giles ShawInformation on losses in converting primary fuels to secondary fuels are published quarterly in table 2 of my Department's monthly bulletin "Energy Trends", copies of which are available in the Library of the House.
In 1982, conversion losses amounted to 23,033 million therms, about 30 per cent. of the total primary fuel input. Sixty one per cent. of these losses — 14,078 million therms—were in the form of low temperature reject heat from public supply conventional thermal power stations. The losses are created in the conversion of mainly "low grade" fuel—coal—into a "high grade" energy source.