WASTE HEAT RECOVERY POWER PLANTS IN CEMENT . Exhaust gas heat (preheater) 163 20.8 148 19.4 Exhaust air heat (grate cooler) 116 14.7 116 15.1 Radiation heat loss (preheater, kiln, cooler) 76 9.6 71 9.2 Heat in discharged clinker 21 2.6 21 2.7 TOTAL 786 100 766 100 Heat input from fuel fired, viz coal 734 - 714 - Table - 1 : Heat ...