To construct the new cycle system is one of the basic studies for increasing the power output and electric efficiency in energy utilization and transformation fields. Therefore

a new ambient pressure gas turbine cycle (APGC) is presented in this paper. The engineering applications of APGC in the fields of the hybrid system with solid oxide fuel cell (SOFC)

biogas power generation system and power recovery system of iron and steel works

etc. were simulated based on the APGC and/or SOFC analytical models established with software Aspen Plus. The results showed that APGC would get wide application in prospect for its advantages.