The article describes the innovative solutions of power, heating and cooling generation utilizing low or medium-grade heat sources. The proposed technology based on the well-known irreversible Brayton Cycle and the revolutionary Maisotsenko Cycle (M-Cycle) operates at atmospheric or sub-atmospheric pressures. Such energetic systems are simple and reliable and utilize moisture-saturated air as a working fluid. The ejector replacing the mechanical compressor in the Brayton Cycle system allows increasing the cycle work by 3-5 times at the constant airflow. At the same time, the utilized heat serves for simultaneous heating and cooling production that makes the system economically viable and environmentally friendly with the increased integral performance. For system’s performance improvement, the schematic and the cycle was upgraded allowing the off-the-shelf components to be employed and replace the electrically driven fan with fluidic jet-fan that served for energy saving of the innovative turbo-ejector system operation.