Influence of the type of working fluid in the lower cycle and superheated steam parameters in the upper cycle on effectiveness of operation of binary power plant

Abstract

In the paper presented have been the results of the analysis of effectiveness of operation of binary power plant consisting of combined two Clausius-Rankine cycles, namely the binary cycle with water as a working fluid in the upper cycle and organic substance as a working fluid in the lower cycle, as well as a single fluid component power plant operating also in line with the C-R cycle for superheated steam, with water as a working fluid. The influence of the parameters of superheated steam in the upper cycle has been assessed as well as the type of working fluid in the lower cycle. The results of calculations have been referred to the single-cycle classical steam power plant operating at the same parameters of superheated steam and the same mass flow rate of water circulating in both cycles. On the basis of accomplished analysis it has been shown that the binary power plant shows a greater power with respect to the reference power plant.

Power increase of the power plant with single-circuit ORC plant with a wet medium, supplied with water in appropriate proportions from the Lower and Middle Triassic Reservoirs

“…In the literature, there are a lot of works on the ORC power plant. These are the works, among others, in which issues related to the evaluation of the efficiency of ORC systems supplied from different heat sources, their operation and the technical solutions used have been presented [4][5][6][7].…”

“…Apart from the analysis of single-circuit ORC systems supplied from one source of heat, the literature also includes works on systems supplied from many heat sources. The works in which the ORC systems supplied from many sources were analyzed include, among others, [6,[13][14][15]. A characteristic feature of the systems analyzed in these works was that they consisted of many separate ORC circuits.…”