Waste heat recovery of the boiler exhaust and the cold-end is of great significance to improving the power efficiency of supercritical carbon dioxide(S-CO_2) coal-fired power plant. Therefore

an S-CO_2 coal-fired power generation system integrated with waste heat recovery of boiler exhaust and the cold-end is proposed in this paper. Moreover

comparative analysis between this system and the conventional S-CO_2 coal-fired power generation system is carried out. The results show that

compared with the conventional S-CO_2 coal-fired power generation system

the power efficiency of the proposed system increases by 0.56% and the standard coal consumption rate decreases by 3.00 g/(kW·h). The proposed system recovers the cold-end exergy loss of 2.8 MW

and reduces the boiler heat transfer exergy loss of 7.3 MW and the boiler exhaust exergy loss of 4.9 MW

resulting in an increase in exergy efficiency of the boiler and the system by 0.65% and 0.51%

respectively.