Pre-compression Brayton Cycle

A further modification of the Brayton cycle includes the addition of a pre-compression cycle. Again, it is aimed at increasing the amount of heat recuperation. The cycle is based on a Brayton cycle with divided recuperation, where an additional compressor is placed on the low-pressure side of the heat recuperator between the high-temperature and low-temperature sections. Increasing the pressure on the low-pressure side leads to an increase in the temperature differential across the low-temperature heat exchanger and to an increase in the specific heat capacity. This cycle typically achieves efficiencies that lie between that of a simple recuperation cycle and a recompression cycle.