High Efficiency Electric Radiant Holding Furnaces on Diecasting Machines. Demonstration Project at Fry's Diecastings Ltd. (London)

摘要

Savings of over pound 19,000, in direct fuel costs, were achieved at the London foundry of Fry's Diecastings Limited in the first year following the replacement of eight conventional crucible holding furnaces by electric radiant units. In addition, the total cost of replacement parts was reduced by an estimated pound 6,000 pa, to give total savings of over pound 25,000 pa. This represents a payback of 2.5 years on the company's investment. The gross energy saving in the first year of operation was 7,290 GJ equivalent to an 83% reduction in energy use. It is considered that these figures would be typical of other sites in the pressure diecasting sector where similar furnaces are operated for 1,500 production hours per year. (ERA citation 11:032103)