Book - School of Science and Technology

Equipment for central stores 137CasingInsulationHot draughttubeCoreFlowRecirculation fanAir/ waterfinned coilReturnFigure 5.8 Dry core boiler (GEC Engineering)Table 5.11 Dry core boilers ± typical particulars (GEC Engineering)Input rating (kW)Item 12 20 50Performancecharge acceptance (kWh) 60 100 250recommended connected load (kW) 6.7 11 35Outputnominal at full charge (kW) 19 19 50direct boost capacity (kW) 6 8 17case emission (kW) 0.3/0.6 0.55/0.8 0.7/1.4Dimensionsheight (mm) 1317 1664 1664width (mm) 610 610 880depth (mm) 596 596 866Weightin situ (kg) 625 825 2000Pumpnominal duty (litre/s) 0.23 0.23 0.64minimum flow (litre/s) 0.15 0.15 0.45Wet core boilersIt is difficult to imagine a simpler fundamental concept than that which is the basis forheat stores developed under the name `Economy 7 boilers': some adjustment to theconcept has, however, been necessary in order to produce a practical production unit.